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Tae Won Ha 2020-01-17 10:19:16 +01:00
parent a36fe99059
commit e199b8b737
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GPG Key ID: E40743465B5B8B44
65 changed files with 8903 additions and 1 deletions
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66
VimR/VimR.xcodeproj/project.pbxproj
View File

@ -701,6 +701,17 @@
4BF18C381FD2E2AB00DF95D1 /* RxCocoa.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = RxCocoa.framework; path = ../Carthage/Build/Mac/RxCocoa.framework; sourceTree = "<group>"; };
4BF18C491FD2E2DE00DF95D1 /* Nimble.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Nimble.framework; path = ../Carthage/Build/Mac/Nimble.framework; sourceTree = "<group>"; };
4BF18C501FD2E4F200DF95D1 /* RxTest.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = RxTest.framework; path = ../Carthage/Build/Mac/RxTest.framework; sourceTree = "<group>"; };
4BF70EB423D1B335009E51E9 /* print.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = print.h; path = "../../third-party/libag/include/print.h"; sourceTree = "<group>"; };
4BF70EB523D1B335009E51E9 /* util.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = util.h; path = "../../third-party/libag/include/util.h"; sourceTree = "<group>"; };
4BF70EB623D1B335009E51E9 /* log.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = log.h; path = "../../third-party/libag/include/log.h"; sourceTree = "<group>"; };
4BF70EB723D1B335009E51E9 /* decompress.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = decompress.h; path = "../../third-party/libag/include/decompress.h"; sourceTree = "<group>"; };
4BF70EB823D1B335009E51E9 /* search.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = search.h; path = "../../third-party/libag/include/search.h"; sourceTree = "<group>"; };
4BF70EB923D1B335009E51E9 /* options.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = options.h; path = "../../third-party/libag/include/options.h"; sourceTree = "<group>"; };
4BF70EBA23D1B335009E51E9 /* config.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = config.h; path = "../../third-party/libag/include/config.h"; sourceTree = "<group>"; };
4BF70EBB23D1B335009E51E9 /* uthash.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = uthash.h; path = "../../third-party/libag/include/uthash.h"; sourceTree = "<group>"; };
4BF70EBC23D1B335009E51E9 /* ignore.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = ignore.h; path = "../../third-party/libag/include/ignore.h"; sourceTree = "<group>"; };
4BF70EBD23D1B335009E51E9 /* lang.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = lang.h; path = "../../third-party/libag/include/lang.h"; sourceTree = "<group>"; };
4BF70EBE23D1B335009E51E9 /* scandir.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = scandir.h; path = "../../third-party/libag/include/scandir.h"; sourceTree = "<group>"; };
/* End PBXFileReference section */
/* Begin PBXFrameworksBuildPhase section */
@ -1125,6 +1136,7 @@
4BEBA5071CFF374B00673FDF /* VimR */ = {
isa = PBXGroup;
children = (
4BF70EB323D1B30A009E51E9 /* the_silver_searcher */,
4BB4CCEE224A7E6D00474C79 /* FSEvents */,
4B004BCA21063B4D0043A396 /* DictionaryCoding */,
4B2A2C0D1D0353750074CE9A /* Bridge.h */,
@ -1155,6 +1167,24 @@
path = VimRTests;
sourceTree = "<group>";
};
4BF70EB323D1B30A009E51E9 /* the_silver_searcher */ = {
isa = PBXGroup;
children = (
4BF70EBA23D1B335009E51E9 /* config.h */,
4BF70EB723D1B335009E51E9 /* decompress.h */,
4BF70EBC23D1B335009E51E9 /* ignore.h */,
4BF70EBD23D1B335009E51E9 /* lang.h */,
4BF70EB623D1B335009E51E9 /* log.h */,
4BF70EB923D1B335009E51E9 /* options.h */,
4BF70EB423D1B335009E51E9 /* print.h */,
4BF70EBE23D1B335009E51E9 /* scandir.h */,
4BF70EB823D1B335009E51E9 /* search.h */,
4BF70EBB23D1B335009E51E9 /* uthash.h */,
4BF70EB523D1B335009E51E9 /* util.h */,
);
name = the_silver_searcher;
sourceTree = "<group>";
};
4BF8EED91D858C4400CAC08A /* Utils */ = {
isa = PBXGroup;
children = (
@ -1783,8 +1813,17 @@
"$(inherited)",
"$(PROJECT_DIR)/../Carthage/Build/Mac",
);
HEADER_SEARCH_PATHS = (
"$(PROJECT_DIR)/../third-party/libxz/include",
"$(PROJECT_DIR)/../third-party/libpcre/include",
);
INFOPLIST_FILE = "$(SRCROOT)/VimR.dev.Info.plist";
LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks";
OTHER_LDFLAGS = (
"$(PROJECT_DIR)/../third-party/libxz/lib/liblzma.a",
"$(PROJECT_DIR)/../third-party/libpcre/lib/libpcre.a",
"$(PROJECT_DIR)/../third-party/libag/lib/libag.a",
);
PRODUCT_BUNDLE_IDENTIFIER = com.qvacua.VimR.dev;
PRODUCT_MODULE_NAME = VimR;
PRODUCT_NAME = "VimR-dev";
@ -1803,8 +1842,17 @@
"$(inherited)",
"$(PROJECT_DIR)/../Carthage/Build/Mac",
);
HEADER_SEARCH_PATHS = (
"$(PROJECT_DIR)/../third-party/libxz/include",
"$(PROJECT_DIR)/../third-party/libpcre/include",
);
INFOPLIST_FILE = "$(SRCROOT)/VimR.dev.Info.plist";
LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks";
OTHER_LDFLAGS = (
"$(PROJECT_DIR)/../third-party/libxz/lib/liblzma.a",
"$(PROJECT_DIR)/../third-party/libpcre/lib/libpcre.a",
"$(PROJECT_DIR)/../third-party/libag/lib/libag.a",
);
PRODUCT_BUNDLE_IDENTIFIER = com.qvacua.VimR.dev;
PRODUCT_MODULE_NAME = VimR;
PRODUCT_NAME = "VimR-dev";
@ -1937,8 +1985,17 @@
"$(inherited)",
"$(PROJECT_DIR)/../Carthage/Build/Mac",
);
HEADER_SEARCH_PATHS = (
"$(PROJECT_DIR)/../third-party/libxz/include",
"$(PROJECT_DIR)/../third-party/libpcre/include",
);
INFOPLIST_FILE = VimR/Info.plist;
LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks";
OTHER_LDFLAGS = (
"$(PROJECT_DIR)/../third-party/libxz/lib/liblzma.a",
"$(PROJECT_DIR)/../third-party/libpcre/lib/libpcre.a",
"$(PROJECT_DIR)/../third-party/libag/lib/libag.a",
);
PRODUCT_BUNDLE_IDENTIFIER = com.qvacua.VimR;
PRODUCT_NAME = VimR;
SWIFT_OBJC_BRIDGING_HEADER = VimR/Bridge.h;
@ -1955,8 +2012,17 @@
"$(inherited)",
"$(PROJECT_DIR)/../Carthage/Build/Mac",
);
HEADER_SEARCH_PATHS = (
"$(PROJECT_DIR)/../third-party/libxz/include",
"$(PROJECT_DIR)/../third-party/libpcre/include",
);
INFOPLIST_FILE = VimR/Info.plist;
LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks";
OTHER_LDFLAGS = (
"$(PROJECT_DIR)/../third-party/libxz/lib/liblzma.a",
"$(PROJECT_DIR)/../third-party/libpcre/lib/libpcre.a",
"$(PROJECT_DIR)/../third-party/libag/lib/libag.a",
);
PRODUCT_BUNDLE_IDENTIFIER = com.qvacua.VimR;
PRODUCT_NAME = VimR;
SWIFT_OBJC_BRIDGING_HEADER = VimR/Bridge.h;

98
bin/build_deps.sh
View File

@ -7,12 +7,104 @@ pushd "$(dirname "${BASH_SOURCE[0]}")/.." > /dev/null
readonly deployment_target_file="./resources/macos_deployment_target.txt"
readonly deployment_target=$(cat ${deployment_target_file})
readonly gettext_version="0.20.1"
readonly pcre_version="8.43"
readonly xz_version="5.2.4"
readonly ag_version="2.2.0"
build_ag () {
pushd .deps > /dev/null
curl -L -o ag.tar.gz https://github.com/ggreer/the_silver_searcher/archive/${ag_version}.tar.gz
tar xf ag.tar.gz
mv the_silver_searcher-${ag_version} ag
pushd ag > /dev/null
./autogen.sh
xz_include=$(pwd)/../../third-party/libxz/include
pcre_include=$(pwd)/../../third-party/libpcre/include
./configure CFLAGS="-mmacosx-version-min=${deployment_target} -I${xz_include} -I${pcre_include}" \
LDFLAGS="-L$(pwd)/../../third-party/libxz/lib -L$(pwd)/../../third-party/libpcre/lib" \
MACOSX_DEPLOYMENT_TARGET=${deployment_target}
pushd src > /dev/null
cc -c ignore.c log.c options.c print.c scandir.c search.c lang.c util.c decompress.c zfile.c
ar -crs libag.a ignore.o log.o options.o print.o scandir.o search.o lang.o util.o decompress.o zfile.o
mkdir -p $(pwd)/../../../third-party/libag/lib
mv libag.a $(pwd)/../../../third-party/libag/lib
mkdir -p $(pwd)/../../../third-party/libag/include
cp *.h $(pwd)/../../../third-party/libag/include
popd > /dev/null
popd > /dev/null
popd > /dev/null
}
build_xz () {
pushd .deps > /dev/null
curl -L -o xz.tar.gz https://tukaani.org/xz/xz-${xz_version}.tar.gz
tar xf xz.tar.gz
mv xz-${xz_version} xz
pushd xz > /dev/null
# configure from https://github.com/Homebrew/homebrew-core/blob/c9882801013d6bc5202b91ef56ff5838d18bbab2/Formula/xz.rb
./configure CFLAGS="-mmacosx-version-min=${deployment_target}" MACOSX_DEPLOYMENT_TARGET=${deployment_target} \
--disable-debug \
--disable-dependency-tracking \
--disable-silent-rules \
--prefix=$(pwd)/../../third-party/libxz
make
make install
rm -rf $(pwd)/../../third-party/libxz/bin
rm -rf $(pwd)/../../third-party/libxz/share
popd > /dev/null
popd > /dev/null
}
build_pcre () {
pushd .deps > /dev/null
curl -L -o pcre.tar.bz2 https://ftp.pcre.org/pub/pcre/pcre-${pcre_version}.tar.bz2
tar xf pcre.tar.bz2
mv pcre-${pcre_version} pcre
pushd pcre > /dev/null
# configure from https://github.com/Homebrew/homebrew-core/blob/c9882801013d6bc5202b91ef56ff5838d18bbab2/Formula/pcre.rb
./configure CFLAGS="-mmacosx-version-min=${deployment_target}" MACOSX_DEPLOYMENT_TARGET=${deployment_target} \
--disable-dependency-tracking \
--prefix=$(pwd)/../../third-party/libpcre \
--enable-utf8 \
--enable-pcre8 \
--enable-pcre16 \
--enable-pcre32 \
--enable-unicode-properties \
--enable-pcregrep-libz \
--enable-pcregrep-libbz2 \
--enable-jit
make
make install
rm -rf $(pwd)/../../third-party/libpcre/bin
rm -rf $(pwd)/../../third-party/libpcre/share
popd > /dev/null
popd > /dev/null
}
build_vimr_deps () {
rm -rf third-party
mkdir third-party
rm -rf .deps
mkdir .deps
build_pcre
build_xz
build_ag
}
build_gettext () {
pushd NvimView > /dev/null
mkdir -p third-party/libintl
rm -rf .deps
mkdir .deps
pushd .deps > /dev/null
curl -o gettext.tar.xz https://ftp.gnu.org/gnu/gettext/gettext-${gettext_version}.tar.xz
curl -L -o gettext.tar.xz https://ftp.gnu.org/gnu/gettext/gettext-${gettext_version}.tar.xz
tar xf gettext.tar.xz
mv gettext-${gettext_version} gettext
@ -52,3 +144,7 @@ popd > /dev/null
popd > /dev/null
echo "### Built deps"
}
#build_gettext
build_vimr_deps

120
third-party/libag/include/config.h vendored Normal file
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@ -0,0 +1,120 @@
/* src/config.h. Generated from config.h.in by configure. */
/* src/config.h.in. Generated from configure.ac by autoheader. */
/* Have dirent struct member d_namlen */
#define HAVE_DIRENT_DNAMLEN /**/
/* Have dirent struct member d_type */
#define HAVE_DIRENT_DTYPE /**/
/* Define to 1 if you have the <err.h> header file. */
#define HAVE_ERR_H 1
/* Define to 1 if you have the `fgetln' function. */
#define HAVE_FGETLN 1
/* Define to 1 if you have the `fopencookie' function. */
/* #undef HAVE_FOPENCOOKIE */
/* Define to 1 if you have the `getline' function. */
#define HAVE_GETLINE 1
/* Define to 1 if you have the <inttypes.h> header file. */
#define HAVE_INTTYPES_H 1
/* Define to 1 if you have the `shlwapi' library (-lshlwapi). */
/* #undef HAVE_LIBSHLWAPI */
/* Define to 1 if you have the <lzma.h> header file. */
#define HAVE_LZMA_H 1
/* Define to 1 if you have the `madvise' function. */
#define HAVE_MADVISE 1
/* Define to 1 if you have the <memory.h> header file. */
#define HAVE_MEMORY_H 1
/* Define to 1 if you have the `pledge' function. */
/* #undef HAVE_PLEDGE */
/* Define to 1 if you have the `posix_fadvise' function. */
/* #undef HAVE_POSIX_FADVISE */
/* Define to 1 if you have the <pthread.h> header file. */
#define HAVE_PTHREAD_H 1
/* Have PTHREAD_PRIO_INHERIT. */
#define HAVE_PTHREAD_PRIO_INHERIT 1
/* Define to 1 if you have the `pthread_setaffinity_np' function. */
/* #undef HAVE_PTHREAD_SETAFFINITY_NP */
/* Define to 1 if you have the `realpath' function. */
#define HAVE_REALPATH 1
/* Define to 1 if you have the <stdint.h> header file. */
#define HAVE_STDINT_H 1
/* Define to 1 if you have the <stdlib.h> header file. */
#define HAVE_STDLIB_H 1
/* Define to 1 if you have the <strings.h> header file. */
#define HAVE_STRINGS_H 1
/* Define to 1 if you have the <string.h> header file. */
#define HAVE_STRING_H 1
/* Define to 1 if you have the `strlcpy' function. */
#define HAVE_STRLCPY 1
/* Define to 1 if you have the `strndup' function. */
#define HAVE_STRNDUP 1
/* Define to 1 if you have the <sys/cpuset.h> header file. */
/* #undef HAVE_SYS_CPUSET_H */
/* Define to 1 if you have the <sys/stat.h> header file. */
#define HAVE_SYS_STAT_H 1
/* Define to 1 if you have the <sys/types.h> header file. */
#define HAVE_SYS_TYPES_H 1
/* Define to 1 if you have the <unistd.h> header file. */
#define HAVE_UNISTD_H 1
/* Define to 1 if you have the `vasprintf' function. */
#define HAVE_VASPRINTF 1
/* Define to 1 if you have the <zlib.h> header file. */
#define HAVE_ZLIB_H 1
/* Define to the address where bug reports for this package should be sent. */
#define PACKAGE_BUGREPORT "https://github.com/ggreer/the_silver_searcher/issues"
/* Define to the full name of this package. */
#define PACKAGE_NAME "the_silver_searcher"
/* Define to the full name and version of this package. */
#define PACKAGE_STRING "the_silver_searcher 2.2.0"
/* Define to the one symbol short name of this package. */
#define PACKAGE_TARNAME "the_silver_searcher"
/* Define to the home page for this package. */
#define PACKAGE_URL "https://github.com/ggreer/the_silver_searcher"
/* Define to the version of this package. */
#define PACKAGE_VERSION "2.2.0"
/* Define to necessary symbol if this constant uses a non-standard name on
your system. */
/* #undef PTHREAD_CREATE_JOINABLE */
/* Define to 1 if you have the ANSI C header files. */
#define STDC_HEADERS 1
/* Use CPU_SET macros */
/* #undef USE_CPU_SET */
/* Use PCRE JIT */
#define USE_PCRE_JIT /**/

26
third-party/libag/include/decompress.h vendored Normal file
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@ -0,0 +1,26 @@
#ifndef DECOMPRESS_H
#define DECOMPRESS_H
#include <stdio.h>
#include "config.h"
#include "log.h"
#include "options.h"
typedef enum {
AG_NO_COMPRESSION,
AG_GZIP,
AG_COMPRESS,
AG_ZIP,
AG_XZ,
} ag_compression_type;
ag_compression_type is_zipped(const void *buf, const int buf_len);
void *decompress(const ag_compression_type zip_type, const void *buf, const int buf_len, const char *dir_full_path, int *new_buf_len);
#if HAVE_FOPENCOOKIE
FILE *decompress_open(int fd, const char *mode, ag_compression_type ctype);
#endif
#endif

48
third-party/libag/include/ignore.h vendored Normal file
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@ -0,0 +1,48 @@
#ifndef IGNORE_H
#define IGNORE_H
#include <dirent.h>
#include <sys/types.h>
struct ignores {
char **extensions; /* File extensions to ignore */
size_t extensions_len;
char **names; /* Non-regex ignore lines. Sorted so we can binary search them. */
size_t names_len;
char **slash_names; /* Same but starts with a slash */
size_t slash_names_len;
char **regexes; /* For patterns that need fnmatch */
size_t regexes_len;
char **invert_regexes; /* For "!" patterns */
size_t invert_regexes_len;
char **slash_regexes;
size_t slash_regexes_len;
const char *dirname;
size_t dirname_len;
char *abs_path;
size_t abs_path_len;
struct ignores *parent;
};
typedef struct ignores ignores;
ignores *root_ignores;
extern const char *evil_hardcoded_ignore_files[];
extern const char *ignore_pattern_files[];
ignores *init_ignore(ignores *parent, const char *dirname, const size_t dirname_len);
void cleanup_ignore(ignores *ig);
void add_ignore_pattern(ignores *ig, const char *pattern);
void load_ignore_patterns(ignores *ig, const char *path);
int filename_filter(const char *path, const struct dirent *dir, void *baton);
int is_empty(ignores *ig);
#endif

36
third-party/libag/include/lang.h vendored Normal file
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@ -0,0 +1,36 @@
#ifndef LANG_H
#define LANG_H
#define MAX_EXTENSIONS 12
#define SINGLE_EXT_LEN 20
typedef struct {
const char *name;
const char *extensions[MAX_EXTENSIONS];
} lang_spec_t;
extern lang_spec_t langs[];
/**
Return the language count.
*/
size_t get_lang_count(void);
/**
Convert a NULL-terminated array of language extensions
into a regular expression of the form \.(extension1|extension2...)$
Caller is responsible for freeing the returned string.
*/
char *make_lang_regex(char *ext_array, size_t num_exts);
/**
Combine multiple file type extensions into one array.
The combined result is returned through *exts*;
*exts* is one-dimension array, which can contain up to 100 extensions;
The number of extensions that *exts* actually contain is returned.
*/
size_t combine_file_extensions(size_t *extension_index, size_t len, char **exts);
#endif

32
third-party/libag/include/log.h vendored Normal file
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@ -0,0 +1,32 @@
#ifndef LOG_H
#define LOG_H
#include <stdarg.h>
#include "config.h"
#ifdef HAVE_PTHREAD_H
#include <pthread.h>
#endif
pthread_mutex_t print_mtx;
enum log_level {
LOG_LEVEL_DEBUG = 10,
LOG_LEVEL_MSG = 20,
LOG_LEVEL_WARN = 30,
LOG_LEVEL_ERR = 40,
LOG_LEVEL_NONE = 100
};
void set_log_level(enum log_level threshold);
void log_debug(const char *fmt, ...);
void log_msg(const char *fmt, ...);
void log_warn(const char *fmt, ...);
void log_err(const char *fmt, ...);
void vplog(const unsigned int level, const char *fmt, va_list args);
void plog(const unsigned int level, const char *fmt, ...);
#endif

105
third-party/libag/include/options.h vendored Normal file
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@ -0,0 +1,105 @@
#ifndef OPTIONS_H
#define OPTIONS_H
#include <getopt.h>
#include <sys/stat.h>
#include <pcre.h>
#define DEFAULT_AFTER_LEN 2
#define DEFAULT_BEFORE_LEN 2
#define DEFAULT_CONTEXT_LEN 2
#define DEFAULT_MAX_SEARCH_DEPTH 25
enum case_behavior {
CASE_DEFAULT, /* Changes to CASE_SMART at the end of option parsing */
CASE_SENSITIVE,
CASE_INSENSITIVE,
CASE_SMART,
CASE_SENSITIVE_RETRY_INSENSITIVE /* for future use */
};
enum path_print_behavior {
PATH_PRINT_DEFAULT, /* PRINT_TOP if > 1 file being searched, else PRINT_NOTHING */
PATH_PRINT_DEFAULT_EACH_LINE, /* PRINT_EACH_LINE if > 1 file being searched, else PRINT_NOTHING */
PATH_PRINT_TOP,
PATH_PRINT_EACH_LINE,
PATH_PRINT_NOTHING
};
typedef struct {
int ackmate;
pcre *ackmate_dir_filter;
pcre_extra *ackmate_dir_filter_extra;
size_t after;
size_t before;
enum case_behavior casing;
const char *file_search_string;
int match_files;
pcre *file_search_regex;
pcre_extra *file_search_regex_extra;
int color;
char *color_line_number;
char *color_match;
char *color_path;
int color_win_ansi;
int column;
int context;
int follow_symlinks;
int invert_match;
int literal;
int literal_starts_wordchar;
int literal_ends_wordchar;
size_t max_matches_per_file;
int max_search_depth;
int mmap;
int multiline;
int one_dev;
int only_matching;
char path_sep;
int path_to_ignore;
int print_break;
int print_count;
int print_filename_only;
int print_path;
int print_all_paths;
int print_line_numbers;
int print_long_lines; /* TODO: support this in print.c */
int passthrough;
pcre *re;
pcre_extra *re_extra;
int recurse_dirs;
int search_all_files;
int skip_vcs_ignores;
int search_binary_files;
int search_zip_files;
int search_hidden_files;
int search_stream; /* true if tail -F blah | ag */
int stats;
size_t stream_line_num; /* This should totally not be in here */
int match_found; /* This should totally not be in here */
ino_t stdout_inode;
char *query;
int query_len;
char *pager;
int paths_len;
int parallel;
int use_thread_affinity;
int vimgrep;
size_t width;
int word_regexp;
int workers;
} cli_options;
/* global options. parse_options gives it sane values, everything else reads from it */
cli_options opts;
typedef struct option option_t;
void usage(void);
void print_version(void);
void init_options(void);
void parse_options(int argc, char **argv, char **base_paths[], char **paths[]);
void cleanup_options(void);
#endif

26
third-party/libag/include/print.h vendored Normal file
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@ -0,0 +1,26 @@
#ifndef PRINT_H
#define PRINT_H
#include "util.h"
void print_init_context(void);
void print_cleanup_context(void);
void print_context_append(const char *line, size_t len);
void print_trailing_context(const char *path, const char *buf, size_t n);
void print_path(const char *path, const char sep);
void print_path_count(const char *path, const char sep, const size_t count);
void print_line(const char *buf, size_t buf_pos, size_t prev_line_offset);
void print_binary_file_matches(const char *path);
void print_file_matches(const char *path, const char *buf, const size_t buf_len, const match_t matches[], const size_t matches_len);
void print_line_number(size_t line, const char sep);
void print_column_number(const match_t matches[], size_t last_printed_match,
size_t prev_line_offset, const char sep);
void print_file_separator(void);
const char *normalize_path(const char *path);
#ifdef _WIN32
void windows_use_ansi(int use_ansi);
int fprintf_w32(FILE *fp, const char *format, ...);
#endif
#endif

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third-party/libag/include/scandir.h vendored Normal file
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#ifndef SCANDIR_H
#define SCANDIR_H
#include "ignore.h"
typedef struct {
const ignores *ig;
const char *base_path;
size_t base_path_len;
const char *path_start;
} scandir_baton_t;
typedef int (*filter_fp)(const char *path, const struct dirent *, void *);
int ag_scandir(const char *dirname,
struct dirent ***namelist,
filter_fp filter,
void *baton);
#endif

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#ifndef SEARCH_H
#define SEARCH_H
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <pcre.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef _WIN32
#include <windows.h>
#else
#include <sys/mman.h>
#endif
#include <sys/stat.h>
#include <unistd.h>
#include "config.h"
#ifdef HAVE_PTHREAD_H
#include <pthread.h>
#endif
#include "decompress.h"
#include "ignore.h"
#include "log.h"
#include "options.h"
#include "print.h"
#include "uthash.h"
#include "util.h"
size_t alpha_skip_lookup[256];
size_t *find_skip_lookup;
uint8_t h_table[H_SIZE] __attribute__((aligned(64)));
struct work_queue_t {
char *path;
struct work_queue_t *next;
};
typedef struct work_queue_t work_queue_t;
work_queue_t *work_queue;
work_queue_t *work_queue_tail;
int done_adding_files;
pthread_cond_t files_ready;
pthread_mutex_t stats_mtx;
pthread_mutex_t work_queue_mtx;
/* For symlink loop detection */
#define SYMLOOP_ERROR (-1)
#define SYMLOOP_OK (0)
#define SYMLOOP_LOOP (1)
typedef struct {
dev_t dev;
ino_t ino;
} dirkey_t;
typedef struct {
dirkey_t key;
UT_hash_handle hh;
} symdir_t;
symdir_t *symhash;
void search_buf(const char *buf, const size_t buf_len,
const char *dir_full_path);
void search_stream(FILE *stream, const char *path);
void search_file(const char *file_full_path);
void *search_file_worker(void *i);
void search_dir(ignores *ig, const char *base_path, const char *path, const int depth, dev_t original_dev);
#endif

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/*
Copyright (c) 2003-2014, Troy D. Hanson http://troydhanson.github.com/uthash/
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef UTHASH_H
#define UTHASH_H
#include <stddef.h> /* ptrdiff_t */
#include <stdlib.h> /* exit() */
#include <string.h> /* memcmp,strlen */
/* These macros use decltype or the earlier __typeof GNU extension.
As decltype is only available in newer compilers (VS2010 or gcc 4.3+
when compiling c++ source) this code uses whatever method is needed
or, for VS2008 where neither is available, uses casting workarounds. */
#if defined(_MSC_VER) /* MS compiler */
#if _MSC_VER >= 1600 && defined(__cplusplus) /* VS2010 or newer in C++ mode */
#define DECLTYPE(x) (decltype(x))
#else /* VS2008 or older (or VS2010 in C mode) */
#define NO_DECLTYPE
#define DECLTYPE(x)
#endif
#elif defined(__BORLANDC__) || defined(__LCC__) || defined(__WATCOMC__)
#define NO_DECLTYPE
#define DECLTYPE(x)
#else /* GNU, Sun and other compilers */
#define DECLTYPE(x) (__typeof(x))
#endif
#ifdef NO_DECLTYPE
#define DECLTYPE_ASSIGN(dst, src) \
do { \
char **_da_dst = (char **)(&(dst)); \
*_da_dst = (char *)(src); \
} while (0)
#else
#define DECLTYPE_ASSIGN(dst, src) \
do { \
(dst) = DECLTYPE(dst)(src); \
} while (0)
#endif
/* a number of the hash function use uint32_t which isn't defined on Pre VS2010 */
#if defined(_WIN32)
#if defined(_MSC_VER) && _MSC_VER >= 1600
#include <stdint.h>
#elif defined(__WATCOMC__)
#include <stdint.h>
#else
typedef unsigned int uint32_t;
typedef unsigned char uint8_t;
#endif
#else
#include <stdint.h>
#endif
#define UTHASH_VERSION 1.9.9
#ifndef uthash_fatal
#define uthash_fatal(msg) exit(-1) /* fatal error (out of memory,etc) */
#endif
#ifndef uthash_malloc
#define uthash_malloc(sz) malloc(sz) /* malloc fcn */
#endif
#ifndef uthash_free
#define uthash_free(ptr, sz) free(ptr) /* free fcn */
#endif
#ifndef uthash_noexpand_fyi
#define uthash_noexpand_fyi(tbl) /* can be defined to log noexpand */
#endif
#ifndef uthash_expand_fyi
#define uthash_expand_fyi(tbl) /* can be defined to log expands */
#endif
/* initial number of buckets */
#define HASH_INITIAL_NUM_BUCKETS 32 /* initial number of buckets */
#define HASH_INITIAL_NUM_BUCKETS_LOG2 5 /* lg2 of initial number of buckets */
#define HASH_BKT_CAPACITY_THRESH 10 /* expand when bucket count reaches */
/* calculate the element whose hash handle address is hhe */
#define ELMT_FROM_HH(tbl, hhp) ((void *)(((char *)(hhp)) - ((tbl)->hho)))
#define HASH_FIND(hh, head, keyptr, keylen, out) \
do { \
unsigned _hf_bkt, _hf_hashv; \
out = NULL; \
if (head) { \
HASH_FCN(keyptr, keylen, (head)->hh.tbl->num_buckets, _hf_hashv, _hf_bkt); \
if (HASH_BLOOM_TEST((head)->hh.tbl, _hf_hashv)) { \
HASH_FIND_IN_BKT((head)->hh.tbl, hh, (head)->hh.tbl->buckets[_hf_bkt], keyptr, keylen, out); \
} \
} \
} while (0)
#ifdef HASH_BLOOM
#define HASH_BLOOM_BITLEN (1ULL << HASH_BLOOM)
#define HASH_BLOOM_BYTELEN (HASH_BLOOM_BITLEN / 8) + ((HASH_BLOOM_BITLEN % 8) ? 1 : 0)
#define HASH_BLOOM_MAKE(tbl) \
do { \
(tbl)->bloom_nbits = HASH_BLOOM; \
(tbl)->bloom_bv = (uint8_t *)uthash_malloc(HASH_BLOOM_BYTELEN); \
if (!((tbl)->bloom_bv)) { \
uthash_fatal("out of memory"); \
} \
memset((tbl)->bloom_bv, 0, HASH_BLOOM_BYTELEN); \
(tbl)->bloom_sig = HASH_BLOOM_SIGNATURE; \
} while (0)
#define HASH_BLOOM_FREE(tbl) \
do { \
uthash_free((tbl)->bloom_bv, HASH_BLOOM_BYTELEN); \
} while (0)
#define HASH_BLOOM_BITSET(bv, idx) (bv[(idx) / 8] |= (1U << ((idx) % 8)))
#define HASH_BLOOM_BITTEST(bv, idx) (bv[(idx) / 8] & (1U << ((idx) % 8)))
#define HASH_BLOOM_ADD(tbl, hashv) \
HASH_BLOOM_BITSET((tbl)->bloom_bv, (hashv & (uint32_t)((1ULL << (tbl)->bloom_nbits) - 1)))
#define HASH_BLOOM_TEST(tbl, hashv) \
HASH_BLOOM_BITTEST((tbl)->bloom_bv, (hashv & (uint32_t)((1ULL << (tbl)->bloom_nbits) - 1)))
#else
#define HASH_BLOOM_MAKE(tbl)
#define HASH_BLOOM_FREE(tbl)
#define HASH_BLOOM_ADD(tbl, hashv)
#define HASH_BLOOM_TEST(tbl, hashv) (1)
#define HASH_BLOOM_BYTELEN 0
#endif
#define HASH_MAKE_TABLE(hh, head) \
do { \
(head)->hh.tbl = (UT_hash_table *)uthash_malloc(sizeof(UT_hash_table)); \
if (!((head)->hh.tbl)) { \
uthash_fatal("out of memory"); \
} \
memset((head)->hh.tbl, 0, sizeof(UT_hash_table)); \
(head)->hh.tbl->tail = &((head)->hh); \
(head)->hh.tbl->num_buckets = HASH_INITIAL_NUM_BUCKETS; \
(head)->hh.tbl->log2_num_buckets = HASH_INITIAL_NUM_BUCKETS_LOG2; \
(head)->hh.tbl->hho = (char *)(&(head)->hh) - (char *)(head); \
(head)->hh.tbl->buckets = (UT_hash_bucket *)uthash_malloc(HASH_INITIAL_NUM_BUCKETS * sizeof(struct UT_hash_bucket)); \
if (!(head)->hh.tbl->buckets) { \
uthash_fatal("out of memory"); \
} \
memset((head)->hh.tbl->buckets, 0, HASH_INITIAL_NUM_BUCKETS * sizeof(struct UT_hash_bucket)); \
HASH_BLOOM_MAKE((head)->hh.tbl); \
(head)->hh.tbl->signature = HASH_SIGNATURE; \
} while (0)
#define HASH_ADD(hh, head, fieldname, keylen_in, add) \
HASH_ADD_KEYPTR(hh, head, &((add)->fieldname), keylen_in, add)
#define HASH_REPLACE(hh, head, fieldname, keylen_in, add, replaced) \
do { \
replaced = NULL; \
HASH_FIND(hh, head, &((add)->fieldname), keylen_in, replaced); \
if (replaced != NULL) { \
HASH_DELETE(hh, head, replaced); \
}; \
HASH_ADD(hh, head, fieldname, keylen_in, add); \
} while (0)
#define HASH_ADD_KEYPTR(hh, head, keyptr, keylen_in, add) \
do { \
unsigned _ha_bkt; \
(add)->hh.next = NULL; \
(add)->hh.key = (char *)(keyptr); \
(add)->hh.keylen = (unsigned)(keylen_in); \
if (!(head)) { \
head = (add); \
(head)->hh.prev = NULL; \
HASH_MAKE_TABLE(hh, head); \
} else { \
(head)->hh.tbl->tail->next = (add); \
(add)->hh.prev = ELMT_FROM_HH((head)->hh.tbl, (head)->hh.tbl->tail); \
(head)->hh.tbl->tail = &((add)->hh); \
} \
(head)->hh.tbl->num_items++; \
(add)->hh.tbl = (head)->hh.tbl; \
HASH_FCN(keyptr, keylen_in, (head)->hh.tbl->num_buckets, (add)->hh.hashv, _ha_bkt); \
HASH_ADD_TO_BKT((head)->hh.tbl->buckets[_ha_bkt], &(add)->hh); \
HASH_BLOOM_ADD((head)->hh.tbl, (add)->hh.hashv); \
HASH_EMIT_KEY(hh, head, keyptr, keylen_in); \
HASH_FSCK(hh, head); \
} while (0)
#define HASH_TO_BKT(hashv, num_bkts, bkt) \
do { \
bkt = ((hashv) & (num_bkts - 1)); \
} while (0)
/* delete "delptr" from the hash table.
* "the usual" patch-up process for the app-order doubly-linked-list.
* The use of _hd_hh_del below deserves special explanation.
* These used to be expressed using (delptr) but that led to a bug
* if someone used the same symbol for the head and deletee, like
* HASH_DELETE(hh,users,users);
* We want that to work, but by changing the head (users) below
* we were forfeiting our ability to further refer to the deletee (users)
* in the patch-up process. Solution: use scratch space to
* copy the deletee pointer, then the latter references are via that
* scratch pointer rather than through the repointed (users) symbol.
*/
#define HASH_DELETE(hh, head, delptr) \
do { \
unsigned _hd_bkt; \
struct UT_hash_handle *_hd_hh_del; \
if (((delptr)->hh.prev == NULL) && ((delptr)->hh.next == NULL)) { \
uthash_free((head)->hh.tbl->buckets, (head)->hh.tbl->num_buckets * sizeof(struct UT_hash_bucket)); \
HASH_BLOOM_FREE((head)->hh.tbl); \
uthash_free((head)->hh.tbl, sizeof(UT_hash_table)); \
head = NULL; \
} else { \
_hd_hh_del = &((delptr)->hh); \
if ((delptr) == ELMT_FROM_HH((head)->hh.tbl, (head)->hh.tbl->tail)) { \
(head)->hh.tbl->tail = (UT_hash_handle *)((ptrdiff_t)((delptr)->hh.prev) + (head)->hh.tbl->hho); \
} \
if ((delptr)->hh.prev) { \
((UT_hash_handle *)((ptrdiff_t)((delptr)->hh.prev) + (head)->hh.tbl->hho))->next = (delptr)->hh.next; \
} else { \
DECLTYPE_ASSIGN(head, (delptr)->hh.next); \
} \
if (_hd_hh_del->next) { \
((UT_hash_handle *)((ptrdiff_t)_hd_hh_del->next + (head)->hh.tbl->hho))->prev = _hd_hh_del->prev; \
} \
HASH_TO_BKT(_hd_hh_del->hashv, (head)->hh.tbl->num_buckets, _hd_bkt); \
HASH_DEL_IN_BKT(hh, (head)->hh.tbl->buckets[_hd_bkt], _hd_hh_del); \
(head)->hh.tbl->num_items--; \
} \
HASH_FSCK(hh, head); \
} while (0)
/* convenience forms of HASH_FIND/HASH_ADD/HASH_DEL */
#define HASH_FIND_STR(head, findstr, out) \
HASH_FIND(hh, head, findstr, strlen(findstr), out)
#define HASH_ADD_STR(head, strfield, add) \
HASH_ADD(hh, head, strfield[0], strlen(add->strfield), add)
#define HASH_REPLACE_STR(head, strfield, add, replaced) \
HASH_REPLACE(hh, head, strfield[0], strlen(add->strfield), add, replaced)
#define HASH_FIND_INT(head, findint, out) \
HASH_FIND(hh, head, findint, sizeof(int), out)
#define HASH_ADD_INT(head, intfield, add) \
HASH_ADD(hh, head, intfield, sizeof(int), add)
#define HASH_REPLACE_INT(head, intfield, add, replaced) \
HASH_REPLACE(hh, head, intfield, sizeof(int), add, replaced)
#define HASH_FIND_PTR(head, findptr, out) \
HASH_FIND(hh, head, findptr, sizeof(void *), out)
#define HASH_ADD_PTR(head, ptrfield, add) \
HASH_ADD(hh, head, ptrfield, sizeof(void *), add)
#define HASH_REPLACE_PTR(head, ptrfield, add, replaced) \
HASH_REPLACE(hh, head, ptrfield, sizeof(void *), add, replaced)
#define HASH_DEL(head, delptr) \
HASH_DELETE(hh, head, delptr)
/* HASH_FSCK checks hash integrity on every add/delete when HASH_DEBUG is defined.
* This is for uthash developer only; it compiles away if HASH_DEBUG isn't defined.
*/
#ifdef HASH_DEBUG
#define HASH_OOPS(...) \
do { \
fprintf(stderr, __VA_ARGS__); \
exit(-1); \
} while (0)
#define HASH_FSCK(hh, head) \
do { \
unsigned _bkt_i; \
unsigned _count, _bkt_count; \
char *_prev; \
struct UT_hash_handle *_thh; \
if (head) { \
_count = 0; \
for (_bkt_i = 0; _bkt_i < (head)->hh.tbl->num_buckets; _bkt_i++) { \
_bkt_count = 0; \
_thh = (head)->hh.tbl->buckets[_bkt_i].hh_head; \
_prev = NULL; \
while (_thh) { \
if (_prev != (char *)(_thh->hh_prev)) { \
HASH_OOPS("invalid hh_prev %p, actual %p\n", _thh->hh_prev, _prev); \
} \
_bkt_count++; \
_prev = (char *)(_thh); \
_thh = _thh->hh_next; \
} \
_count += _bkt_count; \
if ((head)->hh.tbl->buckets[_bkt_i].count != _bkt_count) { \
HASH_OOPS("invalid bucket count %d, actual %d\n", (head)->hh.tbl->buckets[_bkt_i].count, _bkt_count); \
} \
} \
if (_count != (head)->hh.tbl->num_items) { \
HASH_OOPS("invalid hh item count %d, actual %d\n", (head)->hh.tbl->num_items, _count); \
} \
/* traverse hh in app order; check next/prev integrity, count */ \
_count = 0; \
_prev = NULL; \
_thh = &(head)->hh; \
while (_thh) { \
_count++; \
if (_prev != (char *)(_thh->prev)) { \
HASH_OOPS("invalid prev %p, actual %p\n", _thh->prev, _prev); \
} \
_prev = (char *)ELMT_FROM_HH((head)->hh.tbl, _thh); \
_thh = (_thh->next ? (UT_hash_handle *)((char *)(_thh->next) + (head)->hh.tbl->hho) : NULL); \
} \
if (_count != (head)->hh.tbl->num_items) { \
HASH_OOPS("invalid app item count %d, actual %d\n", (head)->hh.tbl->num_items, _count); \
} \
} \
} while (0)
#else
#define HASH_FSCK(hh, head)
#endif
/* When compiled with -DHASH_EMIT_KEYS, length-prefixed keys are emitted to
* the descriptor to which this macro is defined for tuning the hash function.
* The app can #include <unistd.h> to get the prototype for write(2). */
#ifdef HASH_EMIT_KEYS
#define HASH_EMIT_KEY(hh, head, keyptr, fieldlen) \
do { \
unsigned _klen = fieldlen; \
write(HASH_EMIT_KEYS, &_klen, sizeof(_klen)); \
write(HASH_EMIT_KEYS, keyptr, fieldlen); \
} while (0)
#else
#define HASH_EMIT_KEY(hh, head, keyptr, fieldlen)
#endif
/* default to Jenkin's hash unless overridden e.g. DHASH_FUNCTION=HASH_SAX */
#ifdef HASH_FUNCTION
#define HASH_FCN HASH_FUNCTION
#else
#define HASH_FCN HASH_JEN
#endif
/* The Bernstein hash function, used in Perl prior to v5.6. Note (x<<5+x)=x*33. */
#define HASH_BER(key, keylen, num_bkts, hashv, bkt) \
do { \
unsigned _hb_keylen = keylen; \
char *_hb_key = (char *)(key); \
(hashv) = 0; \
while (_hb_keylen--) { \
(hashv) = (((hashv) << 5) + (hashv)) + *_hb_key++; \
} \
bkt = (hashv) & (num_bkts - 1); \
} while (0)
/* SAX/FNV/OAT/JEN hash functions are macro variants of those listed at
* http://eternallyconfuzzled.com/tuts/algorithms/jsw_tut_hashing.aspx */
#define HASH_SAX(key, keylen, num_bkts, hashv, bkt) \
do { \
unsigned _sx_i; \
char *_hs_key = (char *)(key); \
hashv = 0; \
for (_sx_i = 0; _sx_i < keylen; _sx_i++) \
hashv ^= (hashv << 5) + (hashv >> 2) + _hs_key[_sx_i]; \
bkt = hashv & (num_bkts - 1); \
} while (0)
/* FNV-1a variation */
#define HASH_FNV(key, keylen, num_bkts, hashv, bkt) \
do { \
unsigned _fn_i; \
char *_hf_key = (char *)(key); \
hashv = 2166136261UL; \
for (_fn_i = 0; _fn_i < keylen; _fn_i++) \
hashv = hashv ^ _hf_key[_fn_i]; \
hashv = hashv * 16777619; \
bkt = hashv & (num_bkts - 1); \
} while (0)
#define HASH_OAT(key, keylen, num_bkts, hashv, bkt) \
do { \
unsigned _ho_i; \
char *_ho_key = (char *)(key); \
hashv = 0; \
for (_ho_i = 0; _ho_i < keylen; _ho_i++) { \
hashv += _ho_key[_ho_i]; \
hashv += (hashv << 10); \
hashv ^= (hashv >> 6); \
} \
hashv += (hashv << 3); \
hashv ^= (hashv >> 11); \
hashv += (hashv << 15); \
bkt = hashv & (num_bkts - 1); \
} while (0)
#define HASH_JEN_MIX(a, b, c) \
do { \
a -= b; \
a -= c; \
a ^= (c >> 13); \
b -= c; \
b -= a; \
b ^= (a << 8); \
c -= a; \
c -= b; \
c ^= (b >> 13); \
a -= b; \
a -= c; \
a ^= (c >> 12); \
b -= c; \
b -= a; \
b ^= (a << 16); \
c -= a; \
c -= b; \
c ^= (b >> 5); \
a -= b; \
a -= c; \
a ^= (c >> 3); \
b -= c; \
b -= a; \
b ^= (a << 10); \
c -= a; \
c -= b; \
c ^= (b >> 15); \
} while (0)
#define HASH_JEN(key, keylen, num_bkts, hashv, bkt) \
do { \
unsigned _hj_i, _hj_j, _hj_k; \
unsigned char *_hj_key = (unsigned char *)(key); \
hashv = 0xfeedbeef; \
_hj_i = _hj_j = 0x9e3779b9; \
_hj_k = (unsigned)(keylen); \
while (_hj_k >= 12) { \
_hj_i += (_hj_key[0] + ((unsigned)_hj_key[1] << 8) + ((unsigned)_hj_key[2] << 16) + ((unsigned)_hj_key[3] << 24)); \
_hj_j += (_hj_key[4] + ((unsigned)_hj_key[5] << 8) + ((unsigned)_hj_key[6] << 16) + ((unsigned)_hj_key[7] << 24)); \
hashv += (_hj_key[8] + ((unsigned)_hj_key[9] << 8) + ((unsigned)_hj_key[10] << 16) + ((unsigned)_hj_key[11] << 24)); \
\
HASH_JEN_MIX(_hj_i, _hj_j, hashv); \
\
_hj_key += 12; \
_hj_k -= 12; \
} \
hashv += keylen; \
switch (_hj_k) { \
case 11: \
hashv += ((unsigned)_hj_key[10] << 24); \
/* fall through */ \
case 10: \
hashv += ((unsigned)_hj_key[9] << 16); \
/* fall through */ \
case 9: \
hashv += ((unsigned)_hj_key[8] << 8); \
/* fall through */ \
case 8: \
_hj_j += ((unsigned)_hj_key[7] << 24); \
/* fall through */ \
case 7: \
_hj_j += ((unsigned)_hj_key[6] << 16); \
/* fall through */ \
case 6: \
_hj_j += ((unsigned)_hj_key[5] << 8); \
/* fall through */ \
case 5: \
_hj_j += _hj_key[4]; \
/* fall through */ \
case 4: \
_hj_i += ((unsigned)_hj_key[3] << 24); \
/* fall through */ \
case 3: \
_hj_i += ((unsigned)_hj_key[2] << 16); \
/* fall through */ \
case 2: \
_hj_i += ((unsigned)_hj_key[1] << 8); \
/* fall through */ \
case 1: \
_hj_i += _hj_key[0]; \
} \
HASH_JEN_MIX(_hj_i, _hj_j, hashv); \
bkt = hashv & (num_bkts - 1); \
} while (0)
/* The Paul Hsieh hash function */
#undef get16bits
#if (defined(__GNUC__) && defined(__i386__)) || defined(__WATCOMC__) || defined(_MSC_VER) || defined(__BORLANDC__) || defined(__TURBOC__)
#define get16bits(d) (*((const uint16_t *)(d)))
#endif
#if !defined(get16bits)
#define get16bits(d) ((((uint32_t)(((const uint8_t *)(d))[1])) << 8) + (uint32_t)(((const uint8_t *)(d))[0]))
#endif
#define HASH_SFH(key, keylen, num_bkts, hashv, bkt) \
do { \
unsigned char *_sfh_key = (unsigned char *)(key); \
uint32_t _sfh_tmp, _sfh_len = keylen; \
\
int _sfh_rem = _sfh_len & 3; \
_sfh_len >>= 2; \
hashv = 0xcafebabe; \
\
/* Main loop */ \
for (; _sfh_len > 0; _sfh_len--) { \
hashv += get16bits(_sfh_key); \
_sfh_tmp = (uint32_t)(get16bits(_sfh_key + 2)) << 11 ^ hashv; \
hashv = (hashv << 16) ^ _sfh_tmp; \
_sfh_key += 2 * sizeof(uint16_t); \
hashv += hashv >> 11; \
} \
\
/* Handle end cases */ \
switch (_sfh_rem) { \
case 3: \
hashv += get16bits(_sfh_key); \
hashv ^= hashv << 16; \
hashv ^= (uint32_t)(_sfh_key[sizeof(uint16_t)] << 18); \
hashv += hashv >> 11; \
break; \
case 2: \
hashv += get16bits(_sfh_key); \
hashv ^= hashv << 11; \
hashv += hashv >> 17; \
break; \
case 1: \
hashv += *_sfh_key; \
hashv ^= hashv << 10; \
hashv += hashv >> 1; \
} \
\
/* Force "avalanching" of final 127 bits */ \
hashv ^= hashv << 3; \
hashv += hashv >> 5; \
hashv ^= hashv << 4; \
hashv += hashv >> 17; \
hashv ^= hashv << 25; \
hashv += hashv >> 6; \
bkt = hashv & (num_bkts - 1); \
} while (0)
#ifdef HASH_USING_NO_STRICT_ALIASING
/* The MurmurHash exploits some CPU's (x86,x86_64) tolerance for unaligned reads.
* For other types of CPU's (e.g. Sparc) an unaligned read causes a bus error.
* MurmurHash uses the faster approach only on CPU's where we know it's safe.
*
* Note the preprocessor built-in defines can be emitted using:
*
* gcc -m64 -dM -E - < /dev/null (on gcc)
* cc -## a.c (where a.c is a simple test file) (Sun Studio)
*/
#if (defined(__i386__) || defined(__x86_64__) || defined(_M_IX86))
#define MUR_GETBLOCK(p, i) p[i]
#else /* non intel */
#define MUR_PLUS0_ALIGNED(p) (((unsigned long)p & 0x3) == 0)
#define MUR_PLUS1_ALIGNED(p) (((unsigned long)p & 0x3) == 1)
#define MUR_PLUS2_ALIGNED(p) (((unsigned long)p & 0x3) == 2)
#define MUR_PLUS3_ALIGNED(p) (((unsigned long)p & 0x3) == 3)
#define WP(p) ((uint32_t *)((unsigned long)(p) & ~3UL))
#if (defined(__BIG_ENDIAN__) || defined(SPARC) || defined(__ppc__) || defined(__ppc64__))
#define MUR_THREE_ONE(p) ((((*WP(p)) & 0x00ffffff) << 8) | (((*(WP(p) + 1)) & 0xff000000) >> 24))
#define MUR_TWO_TWO(p) ((((*WP(p)) & 0x0000ffff) << 16) | (((*(WP(p) + 1)) & 0xffff0000) >> 16))
#define MUR_ONE_THREE(p) ((((*WP(p)) & 0x000000ff) << 24) | (((*(WP(p) + 1)) & 0xffffff00) >> 8))
#else /* assume little endian non-intel */
#define MUR_THREE_ONE(p) ((((*WP(p)) & 0xffffff00) >> 8) | (((*(WP(p) + 1)) & 0x000000ff) << 24))
#define MUR_TWO_TWO(p) ((((*WP(p)) & 0xffff0000) >> 16) | (((*(WP(p) + 1)) & 0x0000ffff) << 16))
#define MUR_ONE_THREE(p) ((((*WP(p)) & 0xff000000) >> 24) | (((*(WP(p) + 1)) & 0x00ffffff) << 8))
#endif
#define MUR_GETBLOCK(p, i) (MUR_PLUS0_ALIGNED(p) ? ((p)[i]) : (MUR_PLUS1_ALIGNED(p) ? MUR_THREE_ONE(p) : (MUR_PLUS2_ALIGNED(p) ? MUR_TWO_TWO(p) : MUR_ONE_THREE(p))))
#endif
#define MUR_ROTL32(x, r) (((x) << (r)) | ((x) >> (32 - (r))))
#define MUR_FMIX(_h) \
do { \
_h ^= _h >> 16; \
_h *= 0x85ebca6b; \
_h ^= _h >> 13; \
_h *= 0xc2b2ae35l; \
_h ^= _h >> 16; \
} while (0)
#define HASH_MUR(key, keylen, num_bkts, hashv, bkt) \
do { \
const uint8_t *_mur_data = (const uint8_t *)(key); \
const int _mur_nblocks = (keylen) / 4; \
uint32_t _mur_h1 = 0xf88D5353; \
uint32_t _mur_c1 = 0xcc9e2d51; \
uint32_t _mur_c2 = 0x1b873593; \
uint32_t _mur_k1 = 0; \
const uint8_t *_mur_tail; \
const uint32_t *_mur_blocks = (const uint32_t *)(_mur_data + _mur_nblocks * 4); \
int _mur_i; \
for (_mur_i = -_mur_nblocks; _mur_i; _mur_i++) { \
_mur_k1 = MUR_GETBLOCK(_mur_blocks, _mur_i); \
_mur_k1 *= _mur_c1; \
_mur_k1 = MUR_ROTL32(_mur_k1, 15); \
_mur_k1 *= _mur_c2; \
\
_mur_h1 ^= _mur_k1; \
_mur_h1 = MUR_ROTL32(_mur_h1, 13); \
_mur_h1 = _mur_h1 * 5 + 0xe6546b64; \
} \
_mur_tail = (const uint8_t *)(_mur_data + _mur_nblocks * 4); \
_mur_k1 = 0; \
switch (keylen & 3) { \
case 3: \
_mur_k1 ^= _mur_tail[2] << 16; \
case 2: \
_mur_k1 ^= _mur_tail[1] << 8; \
case 1: \
_mur_k1 ^= _mur_tail[0]; \
_mur_k1 *= _mur_c1; \
_mur_k1 = MUR_ROTL32(_mur_k1, 15); \
_mur_k1 *= _mur_c2; \
_mur_h1 ^= _mur_k1; \
} \
_mur_h1 ^= (keylen); \
MUR_FMIX(_mur_h1); \
hashv = _mur_h1; \
bkt = hashv & (num_bkts - 1); \
} while (0)
#endif /* HASH_USING_NO_STRICT_ALIASING */
/* key comparison function; return 0 if keys equal */
#define HASH_KEYCMP(a, b, len) memcmp(a, b, len)
/* iterate over items in a known bucket to find desired item */
#define HASH_FIND_IN_BKT(tbl, hh, head, keyptr, keylen_in, out) \
do { \
if (head.hh_head) \
DECLTYPE_ASSIGN(out, ELMT_FROM_HH(tbl, head.hh_head)); \
else \
out = NULL; \
while (out) { \
if ((out)->hh.keylen == keylen_in) { \
if ((HASH_KEYCMP((out)->hh.key, keyptr, keylen_in)) == 0) \
break; \
} \
if ((out)->hh.hh_next) \
DECLTYPE_ASSIGN(out, ELMT_FROM_HH(tbl, (out)->hh.hh_next)); \
else \
out = NULL; \
} \
} while (0)
/* add an item to a bucket */
#define HASH_ADD_TO_BKT(head, addhh) \
do { \
head.count++; \
(addhh)->hh_next = head.hh_head; \
(addhh)->hh_prev = NULL; \
if (head.hh_head) { \
(head).hh_head->hh_prev = (addhh); \
} \
(head).hh_head = addhh; \
if (head.count >= ((head.expand_mult + 1) * HASH_BKT_CAPACITY_THRESH) && (addhh)->tbl->noexpand != 1) { \
HASH_EXPAND_BUCKETS((addhh)->tbl); \
} \
} while (0)
/* remove an item from a given bucket */
#define HASH_DEL_IN_BKT(hh, head, hh_del) \
(head).count--; \
if ((head).hh_head == hh_del) { \
(head).hh_head = hh_del->hh_next; \
} \
if (hh_del->hh_prev) { \
hh_del->hh_prev->hh_next = hh_del->hh_next; \
} \
if (hh_del->hh_next) { \
hh_del->hh_next->hh_prev = hh_del->hh_prev; \
}
/* Bucket expansion has the effect of doubling the number of buckets
* and redistributing the items into the new buckets. Ideally the
* items will distribute more or less evenly into the new buckets
* (the extent to which this is true is a measure of the quality of
* the hash function as it applies to the key domain).
*
* With the items distributed into more buckets, the chain length
* (item count) in each bucket is reduced. Thus by expanding buckets
* the hash keeps a bound on the chain length. This bounded chain
* length is the essence of how a hash provides constant time lookup.
*
* The calculation of tbl->ideal_chain_maxlen below deserves some
* explanation. First, keep in mind that we're calculating the ideal
* maximum chain length based on the *new* (doubled) bucket count.
* In fractions this is just n/b (n=number of items,b=new num buckets).
* Since the ideal chain length is an integer, we want to calculate
* ceil(n/b). We don't depend on floating point arithmetic in this
* hash, so to calculate ceil(n/b) with integers we could write
*
* ceil(n/b) = (n/b) + ((n%b)?1:0)
*
* and in fact a previous version of this hash did just that.
* But now we have improved things a bit by recognizing that b is
* always a power of two. We keep its base 2 log handy (call it lb),
* so now we can write this with a bit shift and logical AND:
*
* ceil(n/b) = (n>>lb) + ( (n & (b-1)) ? 1:0)
*
*/
#define HASH_EXPAND_BUCKETS(tbl) \
do { \
unsigned _he_bkt; \
unsigned _he_bkt_i; \
struct UT_hash_handle *_he_thh, *_he_hh_nxt; \
UT_hash_bucket *_he_new_buckets, *_he_newbkt; \
_he_new_buckets = (UT_hash_bucket *)uthash_malloc(2 * tbl->num_buckets * sizeof(struct UT_hash_bucket)); \
if (!_he_new_buckets) { \
uthash_fatal("out of memory"); \
} \
memset(_he_new_buckets, 0, 2 * tbl->num_buckets * sizeof(struct UT_hash_bucket)); \
tbl->ideal_chain_maxlen = (tbl->num_items >> (tbl->log2_num_buckets + 1)) + ((tbl->num_items & ((tbl->num_buckets * 2) - 1)) ? 1 : 0); \
tbl->nonideal_items = 0; \
for (_he_bkt_i = 0; _he_bkt_i < tbl->num_buckets; _he_bkt_i++) { \
_he_thh = tbl->buckets[_he_bkt_i].hh_head; \
while (_he_thh) { \
_he_hh_nxt = _he_thh->hh_next; \
HASH_TO_BKT(_he_thh->hashv, tbl->num_buckets * 2, _he_bkt); \
_he_newbkt = &(_he_new_buckets[_he_bkt]); \
if (++(_he_newbkt->count) > tbl->ideal_chain_maxlen) { \
tbl->nonideal_items++; \
_he_newbkt->expand_mult = _he_newbkt->count / tbl->ideal_chain_maxlen; \
} \
_he_thh->hh_prev = NULL; \
_he_thh->hh_next = _he_newbkt->hh_head; \
if (_he_newbkt->hh_head) \
_he_newbkt->hh_head->hh_prev = _he_thh; \
_he_newbkt->hh_head = _he_thh; \
_he_thh = _he_hh_nxt; \
} \
} \
uthash_free(tbl->buckets, tbl->num_buckets * sizeof(struct UT_hash_bucket)); \
tbl->num_buckets *= 2; \
tbl->log2_num_buckets++; \
tbl->buckets = _he_new_buckets; \
tbl->ineff_expands = (tbl->nonideal_items > (tbl->num_items >> 1)) ? (tbl->ineff_expands + 1) : 0; \
if (tbl->ineff_expands > 1) { \
tbl->noexpand = 1; \
uthash_noexpand_fyi(tbl); \
} \
uthash_expand_fyi(tbl); \
} while (0)
/* This is an adaptation of Simon Tatham's O(n log(n)) mergesort */
/* Note that HASH_SORT assumes the hash handle name to be hh.
* HASH_SRT was added to allow the hash handle name to be passed in. */
#define HASH_SORT(head, cmpfcn) HASH_SRT(hh, head, cmpfcn)
#define HASH_SRT(hh, head, cmpfcn) \
do { \
unsigned _hs_i; \
unsigned _hs_looping, _hs_nmerges, _hs_insize, _hs_psize, _hs_qsize; \
struct UT_hash_handle *_hs_p, *_hs_q, *_hs_e, *_hs_list, *_hs_tail; \
if (head) { \
_hs_insize = 1; \
_hs_looping = 1; \
_hs_list = &((head)->hh); \
while (_hs_looping) { \
_hs_p = _hs_list; \
_hs_list = NULL; \
_hs_tail = NULL; \
_hs_nmerges = 0; \
while (_hs_p) { \
_hs_nmerges++; \
_hs_q = _hs_p; \
_hs_psize = 0; \
for (_hs_i = 0; _hs_i < _hs_insize; _hs_i++) { \
_hs_psize++; \
_hs_q = (UT_hash_handle *)((_hs_q->next) ? ((void *)((char *)(_hs_q->next) + (head)->hh.tbl->hho)) : NULL); \
if (!(_hs_q)) \
break; \
} \
_hs_qsize = _hs_insize; \
while ((_hs_psize > 0) || ((_hs_qsize > 0) && _hs_q)) { \
if (_hs_psize == 0) { \
_hs_e = _hs_q; \
_hs_q = (UT_hash_handle *)((_hs_q->next) ? ((void *)((char *)(_hs_q->next) + (head)->hh.tbl->hho)) : NULL); \
_hs_qsize--; \
} else if ((_hs_qsize == 0) || !(_hs_q)) { \
_hs_e = _hs_p; \
if (_hs_p) { \
_hs_p = (UT_hash_handle *)((_hs_p->next) ? ((void *)((char *)(_hs_p->next) + (head)->hh.tbl->hho)) : NULL); \
} \
_hs_psize--; \
} else if ((cmpfcn(DECLTYPE(head)(ELMT_FROM_HH((head)->hh.tbl, _hs_p)), DECLTYPE(head)(ELMT_FROM_HH((head)->hh.tbl, _hs_q)))) <= 0) { \
_hs_e = _hs_p; \
if (_hs_p) { \
_hs_p = (UT_hash_handle *)((_hs_p->next) ? ((void *)((char *)(_hs_p->next) + (head)->hh.tbl->hho)) : NULL); \
} \
_hs_psize--; \
} else { \
_hs_e = _hs_q; \
_hs_q = (UT_hash_handle *)((_hs_q->next) ? ((void *)((char *)(_hs_q->next) + (head)->hh.tbl->hho)) : NULL); \
_hs_qsize--; \
} \
if (_hs_tail) { \
_hs_tail->next = ((_hs_e) ? ELMT_FROM_HH((head)->hh.tbl, _hs_e) : NULL); \
} else { \
_hs_list = _hs_e; \
} \
if (_hs_e) { \
_hs_e->prev = ((_hs_tail) ? ELMT_FROM_HH((head)->hh.tbl, _hs_tail) : NULL); \
} \
_hs_tail = _hs_e; \
} \
_hs_p = _hs_q; \
} \
if (_hs_tail) { \
_hs_tail->next = NULL; \
} \
if (_hs_nmerges <= 1) { \
_hs_looping = 0; \
(head)->hh.tbl->tail = _hs_tail; \
DECLTYPE_ASSIGN(head, ELMT_FROM_HH((head)->hh.tbl, _hs_list)); \
} \
_hs_insize *= 2; \
} \
HASH_FSCK(hh, head); \
} \
} while (0)
/* This function selects items from one hash into another hash.
* The end result is that the selected items have dual presence
* in both hashes. There is no copy of the items made; rather
* they are added into the new hash through a secondary hash
* hash handle that must be present in the structure. */
#define HASH_SELECT(hh_dst, dst, hh_src, src, cond) \
do { \
unsigned _src_bkt, _dst_bkt; \
void *_last_elt = NULL, *_elt; \
UT_hash_handle *_src_hh, *_dst_hh, *_last_elt_hh = NULL; \
ptrdiff_t _dst_hho = ((char *)(&(dst)->hh_dst) - (char *)(dst)); \
if (src) { \
for (_src_bkt = 0; _src_bkt < (src)->hh_src.tbl->num_buckets; _src_bkt++) { \
for (_src_hh = (src)->hh_src.tbl->buckets[_src_bkt].hh_head; _src_hh; _src_hh = _src_hh->hh_next) { \
_elt = ELMT_FROM_HH((src)->hh_src.tbl, _src_hh); \
if (cond(_elt)) { \
_dst_hh = (UT_hash_handle *)(((char *)_elt) + _dst_hho); \
_dst_hh->key = _src_hh->key; \
_dst_hh->keylen = _src_hh->keylen; \
_dst_hh->hashv = _src_hh->hashv; \
_dst_hh->prev = _last_elt; \
_dst_hh->next = NULL; \
if (_last_elt_hh) { \
_last_elt_hh->next = _elt; \
} \
if (!dst) { \
DECLTYPE_ASSIGN(dst, _elt); \
HASH_MAKE_TABLE(hh_dst, dst); \
} else { \
_dst_hh->tbl = (dst)->hh_dst.tbl; \
} \
HASH_TO_BKT(_dst_hh->hashv, _dst_hh->tbl->num_buckets, _dst_bkt); \
HASH_ADD_TO_BKT(_dst_hh->tbl->buckets[_dst_bkt], _dst_hh); \
(dst)->hh_dst.tbl->num_items++; \
_last_elt = _elt; \
_last_elt_hh = _dst_hh; \
} \
} \
} \
} \
HASH_FSCK(hh_dst, dst); \
} while (0)
#define HASH_CLEAR(hh, head) \
do { \
if (head) { \
uthash_free((head)->hh.tbl->buckets, (head)->hh.tbl->num_buckets * sizeof(struct UT_hash_bucket)); \
HASH_BLOOM_FREE((head)->hh.tbl); \
uthash_free((head)->hh.tbl, sizeof(UT_hash_table)); \
(head) = NULL; \
} \
} while (0)
#define HASH_OVERHEAD(hh, head) \
(size_t)((((head)->hh.tbl->num_items * sizeof(UT_hash_handle)) + \
((head)->hh.tbl->num_buckets * sizeof(UT_hash_bucket)) + \
(sizeof(UT_hash_table)) + \
(HASH_BLOOM_BYTELEN)))
#ifdef NO_DECLTYPE
#define HASH_ITER(hh, head, el, tmp) for ((el) = (head), (*(char **)(&(tmp))) = (char *)((head) ? (head)->hh.next : NULL); \
el; (el) = (tmp), (*(char **)(&(tmp))) = (char *)((tmp) ? (tmp)->hh.next : NULL))
#else
#define HASH_ITER(hh, head, el, tmp) for ((el) = (head), (tmp) = DECLTYPE(el)((head) ? (head)->hh.next : NULL); \
el; (el) = (tmp), (tmp) = DECLTYPE(el)((tmp) ? (tmp)->hh.next : NULL))
#endif
/* obtain a count of items in the hash */
#define HASH_COUNT(head) HASH_CNT(hh, head)
#define HASH_CNT(hh, head) ((head) ? ((head)->hh.tbl->num_items) : 0)
typedef struct UT_hash_bucket {
struct UT_hash_handle *hh_head;
unsigned count;
/* expand_mult is normally set to 0. In this situation, the max chain length
* threshold is enforced at its default value, HASH_BKT_CAPACITY_THRESH. (If
* the bucket's chain exceeds this length, bucket expansion is triggered).
* However, setting expand_mult to a non-zero value delays bucket expansion
* (that would be triggered by additions to this particular bucket)
* until its chain length reaches a *multiple* of HASH_BKT_CAPACITY_THRESH.
* (The multiplier is simply expand_mult+1). The whole idea of this
* multiplier is to reduce bucket expansions, since they are expensive, in
* situations where we know that a particular bucket tends to be overused.
* It is better to let its chain length grow to a longer yet-still-bounded
* value, than to do an O(n) bucket expansion too often.
*/
unsigned expand_mult;
} UT_hash_bucket;
/* random signature used only to find hash tables in external analysis */
#define HASH_SIGNATURE 0xa0111fe1
#define HASH_BLOOM_SIGNATURE 0xb12220f2
typedef struct UT_hash_table {
UT_hash_bucket *buckets;
unsigned num_buckets, log2_num_buckets;
unsigned num_items;
struct UT_hash_handle *tail; /* tail hh in app order, for fast append */
ptrdiff_t hho; /* hash handle offset (byte pos of hash handle in element */
/* in an ideal situation (all buckets used equally), no bucket would have
* more than ceil(#items/#buckets) items. that's the ideal chain length. */
unsigned ideal_chain_maxlen;
/* nonideal_items is the number of items in the hash whose chain position
* exceeds the ideal chain maxlen. these items pay the penalty for an uneven
* hash distribution; reaching them in a chain traversal takes >ideal steps */
unsigned nonideal_items;
/* ineffective expands occur when a bucket doubling was performed, but
* afterward, more than half the items in the hash had nonideal chain
* positions. If this happens on two consecutive expansions we inhibit any
* further expansion, as it's not helping; this happens when the hash
* function isn't a good fit for the key domain. When expansion is inhibited
* the hash will still work, albeit no longer in constant time. */
unsigned ineff_expands, noexpand;
uint32_t signature; /* used only to find hash tables in external analysis */
#ifdef HASH_BLOOM
uint32_t bloom_sig; /* used only to test bloom exists in external analysis */
uint8_t *bloom_bv;
char bloom_nbits;
#endif
} UT_hash_table;
typedef struct UT_hash_handle {
struct UT_hash_table *tbl;
void *prev; /* prev element in app order */
void *next; /* next element in app order */
struct UT_hash_handle *hh_prev; /* previous hh in bucket order */
struct UT_hash_handle *hh_next; /* next hh in bucket order */
void *key; /* ptr to enclosing struct's key */
unsigned keylen; /* enclosing struct's key len */
unsigned hashv; /* result of hash-fcn(key) */
} UT_hash_handle;
#endif /* UTHASH_H */

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#ifndef UTIL_H
#define UTIL_H
#include <dirent.h>
#include <pcre.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <sys/time.h>
#include "config.h"
#include "log.h"
#include "options.h"
FILE *out_fd;
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
#define H_SIZE (64 * 1024)
#ifdef __clang__
#define NO_SANITIZE_ALIGNMENT __attribute__((no_sanitize("alignment")))
#else
#define NO_SANITIZE_ALIGNMENT
#endif
void *ag_malloc(size_t size);
void *ag_realloc(void *ptr, size_t size);
void *ag_calloc(size_t nelem, size_t elsize);
char *ag_strdup(const char *s);
char *ag_strndup(const char *s, size_t size);
typedef struct {
size_t start; /* Byte at which the match starts */
size_t end; /* and where it ends */
} match_t;
typedef struct {
size_t total_bytes;
size_t total_files;
size_t total_matches;
size_t total_file_matches;
struct timeval time_start;
struct timeval time_end;
} ag_stats;
ag_stats stats;
/* Union to translate between chars and words without violating strict aliasing */
typedef union {
char as_chars[sizeof(uint16_t)];
uint16_t as_word;
} word_t;
void free_strings(char **strs, const size_t strs_len);
void generate_alpha_skip(const char *find, size_t f_len, size_t skip_lookup[], const int case_sensitive);
int is_prefix(const char *s, const size_t s_len, const size_t pos, const int case_sensitive);
size_t suffix_len(const char *s, const size_t s_len, const size_t pos, const int case_sensitive);
void generate_find_skip(const char *find, const size_t f_len, size_t **skip_lookup, const int case_sensitive);
void generate_hash(const char *find, const size_t f_len, uint8_t *H, const int case_sensitive);
/* max is already defined on spec-violating compilers such as MinGW */
size_t ag_max(size_t a, size_t b);
size_t ag_min(size_t a, size_t b);
const char *boyer_moore_strnstr(const char *s, const char *find, const size_t s_len, const size_t f_len,
const size_t alpha_skip_lookup[], const size_t *find_skip_lookup, const int case_insensitive);
const char *hash_strnstr(const char *s, const char *find, const size_t s_len, const size_t f_len, uint8_t *h_table, const int case_sensitive);
size_t invert_matches(const char *buf, const size_t buf_len, match_t matches[], size_t matches_len);
void realloc_matches(match_t **matches, size_t *matches_size, size_t matches_len);
void compile_study(pcre **re, pcre_extra **re_extra, char *q, const int pcre_opts, const int study_opts);
int is_binary(const void *buf, const size_t buf_len);
int is_regex(const char *query);
int is_fnmatch(const char *filename);
int binary_search(const char *needle, char **haystack, int start, int end);
void init_wordchar_table(void);
int is_wordchar(char ch);
int is_lowercase(const char *s);
int is_directory(const char *path, const struct dirent *d);
int is_symlink(const char *path, const struct dirent *d);
int is_named_pipe(const char *path, const struct dirent *d);
void die(const char *fmt, ...);
void ag_asprintf(char **ret, const char *fmt, ...);
ssize_t buf_getline(const char **line, const char *buf, const size_t buf_len, const size_t buf_offset);
#ifndef HAVE_FGETLN
char *fgetln(FILE *fp, size_t *lenp);
#endif
#ifndef HAVE_GETLINE
ssize_t getline(char **lineptr, size_t *n, FILE *stream);
#endif
#ifndef HAVE_REALPATH
char *realpath(const char *path, char *resolved_path);
#endif
#ifndef HAVE_STRLCPY
size_t strlcpy(char *dest, const char *src, size_t size);
#endif
#ifndef HAVE_VASPRINTF
int vasprintf(char **ret, const char *fmt, va_list args);
#endif
#endif

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version https://git-lfs.github.com/spec/v1
oid sha256:28799bb5b02366a972f5550c5408d238a28d01fce18e1ec015232a818a24cd0b
size 118440

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/*************************************************
* Perl-Compatible Regular Expressions *
*************************************************/
/* This is the public header file for the PCRE library, to be #included by
applications that call the PCRE functions.
Copyright (c) 1997-2014 University of Cambridge
-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the University of Cambridge nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
-----------------------------------------------------------------------------
*/
#ifndef _PCRE_H
#define _PCRE_H
/* The current PCRE version information. */
#define PCRE_MAJOR 8
#define PCRE_MINOR 43
#define PCRE_PRERELEASE
#define PCRE_DATE 2019-02-23
/* When an application links to a PCRE DLL in Windows, the symbols that are
imported have to be identified as such. When building PCRE, the appropriate
export setting is defined in pcre_internal.h, which includes this file. So we
don't change existing definitions of PCRE_EXP_DECL and PCRECPP_EXP_DECL. */
#if defined(_WIN32) && !defined(PCRE_STATIC)
# ifndef PCRE_EXP_DECL
# define PCRE_EXP_DECL extern __declspec(dllimport)
# endif
# ifdef __cplusplus
# ifndef PCRECPP_EXP_DECL
# define PCRECPP_EXP_DECL extern __declspec(dllimport)
# endif
# ifndef PCRECPP_EXP_DEFN
# define PCRECPP_EXP_DEFN __declspec(dllimport)
# endif
# endif
#endif
/* By default, we use the standard "extern" declarations. */
#ifndef PCRE_EXP_DECL
# ifdef __cplusplus
# define PCRE_EXP_DECL extern "C"
# else
# define PCRE_EXP_DECL extern
# endif
#endif
#ifdef __cplusplus
# ifndef PCRECPP_EXP_DECL
# define PCRECPP_EXP_DECL extern
# endif
# ifndef PCRECPP_EXP_DEFN
# define PCRECPP_EXP_DEFN
# endif
#endif
/* Have to include stdlib.h in order to ensure that size_t is defined;
it is needed here for malloc. */
#include <stdlib.h>
/* Allow for C++ users */
#ifdef __cplusplus
extern "C" {
#endif
/* Public options. Some are compile-time only, some are run-time only, and some
are both. Most of the compile-time options are saved with the compiled regex so
that they can be inspected during studying (and therefore JIT compiling). Note
that pcre_study() has its own set of options. Originally, all the options
defined here used distinct bits. However, almost all the bits in a 32-bit word
are now used, so in order to conserve them, option bits that were previously
only recognized at matching time (i.e. by pcre_exec() or pcre_dfa_exec()) may
also be used for compile-time options that affect only compiling and are not
relevant for studying or JIT compiling.
Some options for pcre_compile() change its behaviour but do not affect the
behaviour of the execution functions. Other options are passed through to the
execution functions and affect their behaviour, with or without affecting the
behaviour of pcre_compile().
Options that can be passed to pcre_compile() are tagged Cx below, with these
variants:
C1 Affects compile only
C2 Does not affect compile; affects exec, dfa_exec
C3 Affects compile, exec, dfa_exec
C4 Affects compile, exec, dfa_exec, study
C5 Affects compile, exec, study
Options that can be set for pcre_exec() and/or pcre_dfa_exec() are flagged with
E and D, respectively. They take precedence over C3, C4, and C5 settings passed
from pcre_compile(). Those that are compatible with JIT execution are flagged
with J. */
#define PCRE_CASELESS 0x00000001 /* C1 */
#define PCRE_MULTILINE 0x00000002 /* C1 */
#define PCRE_DOTALL 0x00000004 /* C1 */
#define PCRE_EXTENDED 0x00000008 /* C1 */
#define PCRE_ANCHORED 0x00000010 /* C4 E D */
#define PCRE_DOLLAR_ENDONLY 0x00000020 /* C2 */
#define PCRE_EXTRA 0x00000040 /* C1 */
#define PCRE_NOTBOL 0x00000080 /* E D J */
#define PCRE_NOTEOL 0x00000100 /* E D J */
#define PCRE_UNGREEDY 0x00000200 /* C1 */
#define PCRE_NOTEMPTY 0x00000400 /* E D J */
#define PCRE_UTF8 0x00000800 /* C4 ) */
#define PCRE_UTF16 0x00000800 /* C4 ) Synonyms */
#define PCRE_UTF32 0x00000800 /* C4 ) */
#define PCRE_NO_AUTO_CAPTURE 0x00001000 /* C1 */
#define PCRE_NO_UTF8_CHECK 0x00002000 /* C1 E D J ) */
#define PCRE_NO_UTF16_CHECK 0x00002000 /* C1 E D J ) Synonyms */
#define PCRE_NO_UTF32_CHECK 0x00002000 /* C1 E D J ) */
#define PCRE_AUTO_CALLOUT 0x00004000 /* C1 */
#define PCRE_PARTIAL_SOFT 0x00008000 /* E D J ) Synonyms */
#define PCRE_PARTIAL 0x00008000 /* E D J ) */
/* This pair use the same bit. */
#define PCRE_NEVER_UTF 0x00010000 /* C1 ) Overlaid */
#define PCRE_DFA_SHORTEST 0x00010000 /* D ) Overlaid */
/* This pair use the same bit. */
#define PCRE_NO_AUTO_POSSESS 0x00020000 /* C1 ) Overlaid */
#define PCRE_DFA_RESTART 0x00020000 /* D ) Overlaid */
#define PCRE_FIRSTLINE 0x00040000 /* C3 */
#define PCRE_DUPNAMES 0x00080000 /* C1 */
#define PCRE_NEWLINE_CR 0x00100000 /* C3 E D */
#define PCRE_NEWLINE_LF 0x00200000 /* C3 E D */
#define PCRE_NEWLINE_CRLF 0x00300000 /* C3 E D */
#define PCRE_NEWLINE_ANY 0x00400000 /* C3 E D */
#define PCRE_NEWLINE_ANYCRLF 0x00500000 /* C3 E D */
#define PCRE_BSR_ANYCRLF 0x00800000 /* C3 E D */
#define PCRE_BSR_UNICODE 0x01000000 /* C3 E D */
#define PCRE_JAVASCRIPT_COMPAT 0x02000000 /* C5 */
#define PCRE_NO_START_OPTIMIZE 0x04000000 /* C2 E D ) Synonyms */
#define PCRE_NO_START_OPTIMISE 0x04000000 /* C2 E D ) */
#define PCRE_PARTIAL_HARD 0x08000000 /* E D J */
#define PCRE_NOTEMPTY_ATSTART 0x10000000 /* E D J */
#define PCRE_UCP 0x20000000 /* C3 */
/* Exec-time and get/set-time error codes */
#define PCRE_ERROR_NOMATCH (-1)
#define PCRE_ERROR_NULL (-2)
#define PCRE_ERROR_BADOPTION (-3)
#define PCRE_ERROR_BADMAGIC (-4)
#define PCRE_ERROR_UNKNOWN_OPCODE (-5)
#define PCRE_ERROR_UNKNOWN_NODE (-5) /* For backward compatibility */
#define PCRE_ERROR_NOMEMORY (-6)
#define PCRE_ERROR_NOSUBSTRING (-7)
#define PCRE_ERROR_MATCHLIMIT (-8)
#define PCRE_ERROR_CALLOUT (-9) /* Never used by PCRE itself */
#define PCRE_ERROR_BADUTF8 (-10) /* Same for 8/16/32 */
#define PCRE_ERROR_BADUTF16 (-10) /* Same for 8/16/32 */
#define PCRE_ERROR_BADUTF32 (-10) /* Same for 8/16/32 */
#define PCRE_ERROR_BADUTF8_OFFSET (-11) /* Same for 8/16 */
#define PCRE_ERROR_BADUTF16_OFFSET (-11) /* Same for 8/16 */
#define PCRE_ERROR_PARTIAL (-12)
#define PCRE_ERROR_BADPARTIAL (-13)
#define PCRE_ERROR_INTERNAL (-14)
#define PCRE_ERROR_BADCOUNT (-15)
#define PCRE_ERROR_DFA_UITEM (-16)
#define PCRE_ERROR_DFA_UCOND (-17)
#define PCRE_ERROR_DFA_UMLIMIT (-18)
#define PCRE_ERROR_DFA_WSSIZE (-19)
#define PCRE_ERROR_DFA_RECURSE (-20)
#define PCRE_ERROR_RECURSIONLIMIT (-21)
#define PCRE_ERROR_NULLWSLIMIT (-22) /* No longer actually used */
#define PCRE_ERROR_BADNEWLINE (-23)
#define PCRE_ERROR_BADOFFSET (-24)
#define PCRE_ERROR_SHORTUTF8 (-25)
#define PCRE_ERROR_SHORTUTF16 (-25) /* Same for 8/16 */
#define PCRE_ERROR_RECURSELOOP (-26)
#define PCRE_ERROR_JIT_STACKLIMIT (-27)
#define PCRE_ERROR_BADMODE (-28)
#define PCRE_ERROR_BADENDIANNESS (-29)
#define PCRE_ERROR_DFA_BADRESTART (-30)
#define PCRE_ERROR_JIT_BADOPTION (-31)
#define PCRE_ERROR_BADLENGTH (-32)
#define PCRE_ERROR_UNSET (-33)
/* Specific error codes for UTF-8 validity checks */
#define PCRE_UTF8_ERR0 0
#define PCRE_UTF8_ERR1 1
#define PCRE_UTF8_ERR2 2
#define PCRE_UTF8_ERR3 3
#define PCRE_UTF8_ERR4 4
#define PCRE_UTF8_ERR5 5
#define PCRE_UTF8_ERR6 6
#define PCRE_UTF8_ERR7 7
#define PCRE_UTF8_ERR8 8
#define PCRE_UTF8_ERR9 9
#define PCRE_UTF8_ERR10 10
#define PCRE_UTF8_ERR11 11
#define PCRE_UTF8_ERR12 12
#define PCRE_UTF8_ERR13 13
#define PCRE_UTF8_ERR14 14
#define PCRE_UTF8_ERR15 15
#define PCRE_UTF8_ERR16 16
#define PCRE_UTF8_ERR17 17
#define PCRE_UTF8_ERR18 18
#define PCRE_UTF8_ERR19 19
#define PCRE_UTF8_ERR20 20
#define PCRE_UTF8_ERR21 21
#define PCRE_UTF8_ERR22 22 /* Unused (was non-character) */
/* Specific error codes for UTF-16 validity checks */
#define PCRE_UTF16_ERR0 0
#define PCRE_UTF16_ERR1 1
#define PCRE_UTF16_ERR2 2
#define PCRE_UTF16_ERR3 3
#define PCRE_UTF16_ERR4 4 /* Unused (was non-character) */
/* Specific error codes for UTF-32 validity checks */
#define PCRE_UTF32_ERR0 0
#define PCRE_UTF32_ERR1 1
#define PCRE_UTF32_ERR2 2 /* Unused (was non-character) */
#define PCRE_UTF32_ERR3 3
/* Request types for pcre_fullinfo() */
#define PCRE_INFO_OPTIONS 0
#define PCRE_INFO_SIZE 1
#define PCRE_INFO_CAPTURECOUNT 2
#define PCRE_INFO_BACKREFMAX 3
#define PCRE_INFO_FIRSTBYTE 4
#define PCRE_INFO_FIRSTCHAR 4 /* For backwards compatibility */
#define PCRE_INFO_FIRSTTABLE 5
#define PCRE_INFO_LASTLITERAL 6
#define PCRE_INFO_NAMEENTRYSIZE 7
#define PCRE_INFO_NAMECOUNT 8
#define PCRE_INFO_NAMETABLE 9
#define PCRE_INFO_STUDYSIZE 10
#define PCRE_INFO_DEFAULT_TABLES 11
#define PCRE_INFO_OKPARTIAL 12
#define PCRE_INFO_JCHANGED 13
#define PCRE_INFO_HASCRORLF 14
#define PCRE_INFO_MINLENGTH 15
#define PCRE_INFO_JIT 16
#define PCRE_INFO_JITSIZE 17
#define PCRE_INFO_MAXLOOKBEHIND 18
#define PCRE_INFO_FIRSTCHARACTER 19
#define PCRE_INFO_FIRSTCHARACTERFLAGS 20
#define PCRE_INFO_REQUIREDCHAR 21
#define PCRE_INFO_REQUIREDCHARFLAGS 22
#define PCRE_INFO_MATCHLIMIT 23
#define PCRE_INFO_RECURSIONLIMIT 24
#define PCRE_INFO_MATCH_EMPTY 25
/* Request types for pcre_config(). Do not re-arrange, in order to remain
compatible. */
#define PCRE_CONFIG_UTF8 0
#define PCRE_CONFIG_NEWLINE 1
#define PCRE_CONFIG_LINK_SIZE 2
#define PCRE_CONFIG_POSIX_MALLOC_THRESHOLD 3
#define PCRE_CONFIG_MATCH_LIMIT 4
#define PCRE_CONFIG_STACKRECURSE 5
#define PCRE_CONFIG_UNICODE_PROPERTIES 6
#define PCRE_CONFIG_MATCH_LIMIT_RECURSION 7
#define PCRE_CONFIG_BSR 8
#define PCRE_CONFIG_JIT 9
#define PCRE_CONFIG_UTF16 10
#define PCRE_CONFIG_JITTARGET 11
#define PCRE_CONFIG_UTF32 12
#define PCRE_CONFIG_PARENS_LIMIT 13
/* Request types for pcre_study(). Do not re-arrange, in order to remain
compatible. */
#define PCRE_STUDY_JIT_COMPILE 0x0001
#define PCRE_STUDY_JIT_PARTIAL_SOFT_COMPILE 0x0002
#define PCRE_STUDY_JIT_PARTIAL_HARD_COMPILE 0x0004
#define PCRE_STUDY_EXTRA_NEEDED 0x0008
/* Bit flags for the pcre[16|32]_extra structure. Do not re-arrange or redefine
these bits, just add new ones on the end, in order to remain compatible. */
#define PCRE_EXTRA_STUDY_DATA 0x0001
#define PCRE_EXTRA_MATCH_LIMIT 0x0002
#define PCRE_EXTRA_CALLOUT_DATA 0x0004
#define PCRE_EXTRA_TABLES 0x0008
#define PCRE_EXTRA_MATCH_LIMIT_RECURSION 0x0010
#define PCRE_EXTRA_MARK 0x0020
#define PCRE_EXTRA_EXECUTABLE_JIT 0x0040
/* Types */
struct real_pcre8_or_16; /* declaration; the definition is private */
typedef struct real_pcre8_or_16 pcre;
struct real_pcre8_or_16; /* declaration; the definition is private */
typedef struct real_pcre8_or_16 pcre16;
struct real_pcre32; /* declaration; the definition is private */
typedef struct real_pcre32 pcre32;
struct real_pcre_jit_stack; /* declaration; the definition is private */
typedef struct real_pcre_jit_stack pcre_jit_stack;
struct real_pcre16_jit_stack; /* declaration; the definition is private */
typedef struct real_pcre16_jit_stack pcre16_jit_stack;
struct real_pcre32_jit_stack; /* declaration; the definition is private */
typedef struct real_pcre32_jit_stack pcre32_jit_stack;
/* If PCRE is compiled with 16 bit character support, PCRE_UCHAR16 must contain
a 16 bit wide signed data type. Otherwise it can be a dummy data type since
pcre16 functions are not implemented. There is a check for this in pcre_internal.h. */
#ifndef PCRE_UCHAR16
#define PCRE_UCHAR16 unsigned short
#endif
#ifndef PCRE_SPTR16
#define PCRE_SPTR16 const PCRE_UCHAR16 *
#endif
/* If PCRE is compiled with 32 bit character support, PCRE_UCHAR32 must contain
a 32 bit wide signed data type. Otherwise it can be a dummy data type since
pcre32 functions are not implemented. There is a check for this in pcre_internal.h. */
#ifndef PCRE_UCHAR32
#define PCRE_UCHAR32 unsigned int
#endif
#ifndef PCRE_SPTR32
#define PCRE_SPTR32 const PCRE_UCHAR32 *
#endif
/* When PCRE is compiled as a C++ library, the subject pointer type can be
replaced with a custom type. For conventional use, the public interface is a
const char *. */
#ifndef PCRE_SPTR
#define PCRE_SPTR const char *
#endif
/* The structure for passing additional data to pcre_exec(). This is defined in
such as way as to be extensible. Always add new fields at the end, in order to
remain compatible. */
typedef struct pcre_extra {
unsigned long int flags; /* Bits for which fields are set */
void *study_data; /* Opaque data from pcre_study() */
unsigned long int match_limit; /* Maximum number of calls to match() */
void *callout_data; /* Data passed back in callouts */
const unsigned char *tables; /* Pointer to character tables */
unsigned long int match_limit_recursion; /* Max recursive calls to match() */
unsigned char **mark; /* For passing back a mark pointer */
void *executable_jit; /* Contains a pointer to a compiled jit code */
} pcre_extra;
/* Same structure as above, but with 16 bit char pointers. */
typedef struct pcre16_extra {
unsigned long int flags; /* Bits for which fields are set */
void *study_data; /* Opaque data from pcre_study() */
unsigned long int match_limit; /* Maximum number of calls to match() */
void *callout_data; /* Data passed back in callouts */
const unsigned char *tables; /* Pointer to character tables */
unsigned long int match_limit_recursion; /* Max recursive calls to match() */
PCRE_UCHAR16 **mark; /* For passing back a mark pointer */
void *executable_jit; /* Contains a pointer to a compiled jit code */
} pcre16_extra;
/* Same structure as above, but with 32 bit char pointers. */
typedef struct pcre32_extra {
unsigned long int flags; /* Bits for which fields are set */
void *study_data; /* Opaque data from pcre_study() */
unsigned long int match_limit; /* Maximum number of calls to match() */
void *callout_data; /* Data passed back in callouts */
const unsigned char *tables; /* Pointer to character tables */
unsigned long int match_limit_recursion; /* Max recursive calls to match() */
PCRE_UCHAR32 **mark; /* For passing back a mark pointer */
void *executable_jit; /* Contains a pointer to a compiled jit code */
} pcre32_extra;
/* The structure for passing out data via the pcre_callout_function. We use a
structure so that new fields can be added on the end in future versions,
without changing the API of the function, thereby allowing old clients to work
without modification. */
typedef struct pcre_callout_block {
int version; /* Identifies version of block */
/* ------------------------ Version 0 ------------------------------- */
int callout_number; /* Number compiled into pattern */
int *offset_vector; /* The offset vector */
PCRE_SPTR subject; /* The subject being matched */
int subject_length; /* The length of the subject */
int start_match; /* Offset to start of this match attempt */
int current_position; /* Where we currently are in the subject */
int capture_top; /* Max current capture */
int capture_last; /* Most recently closed capture */
void *callout_data; /* Data passed in with the call */
/* ------------------- Added for Version 1 -------------------------- */
int pattern_position; /* Offset to next item in the pattern */
int next_item_length; /* Length of next item in the pattern */
/* ------------------- Added for Version 2 -------------------------- */
const unsigned char *mark; /* Pointer to current mark or NULL */
/* ------------------------------------------------------------------ */
} pcre_callout_block;
/* Same structure as above, but with 16 bit char pointers. */
typedef struct pcre16_callout_block {
int version; /* Identifies version of block */
/* ------------------------ Version 0 ------------------------------- */
int callout_number; /* Number compiled into pattern */
int *offset_vector; /* The offset vector */
PCRE_SPTR16 subject; /* The subject being matched */
int subject_length; /* The length of the subject */
int start_match; /* Offset to start of this match attempt */
int current_position; /* Where we currently are in the subject */
int capture_top; /* Max current capture */
int capture_last; /* Most recently closed capture */
void *callout_data; /* Data passed in with the call */
/* ------------------- Added for Version 1 -------------------------- */
int pattern_position; /* Offset to next item in the pattern */
int next_item_length; /* Length of next item in the pattern */
/* ------------------- Added for Version 2 -------------------------- */
const PCRE_UCHAR16 *mark; /* Pointer to current mark or NULL */
/* ------------------------------------------------------------------ */
} pcre16_callout_block;
/* Same structure as above, but with 32 bit char pointers. */
typedef struct pcre32_callout_block {
int version; /* Identifies version of block */
/* ------------------------ Version 0 ------------------------------- */
int callout_number; /* Number compiled into pattern */
int *offset_vector; /* The offset vector */
PCRE_SPTR32 subject; /* The subject being matched */
int subject_length; /* The length of the subject */
int start_match; /* Offset to start of this match attempt */
int current_position; /* Where we currently are in the subject */
int capture_top; /* Max current capture */
int capture_last; /* Most recently closed capture */
void *callout_data; /* Data passed in with the call */
/* ------------------- Added for Version 1 -------------------------- */
int pattern_position; /* Offset to next item in the pattern */
int next_item_length; /* Length of next item in the pattern */
/* ------------------- Added for Version 2 -------------------------- */
const PCRE_UCHAR32 *mark; /* Pointer to current mark or NULL */
/* ------------------------------------------------------------------ */
} pcre32_callout_block;
/* Indirection for store get and free functions. These can be set to
alternative malloc/free functions if required. Special ones are used in the
non-recursive case for "frames". There is also an optional callout function
that is triggered by the (?) regex item. For Virtual Pascal, these definitions
have to take another form. */
#ifndef VPCOMPAT
PCRE_EXP_DECL void *(*pcre_malloc)(size_t);
PCRE_EXP_DECL void (*pcre_free)(void *);
PCRE_EXP_DECL void *(*pcre_stack_malloc)(size_t);
PCRE_EXP_DECL void (*pcre_stack_free)(void *);
PCRE_EXP_DECL int (*pcre_callout)(pcre_callout_block *);
PCRE_EXP_DECL int (*pcre_stack_guard)(void);
PCRE_EXP_DECL void *(*pcre16_malloc)(size_t);
PCRE_EXP_DECL void (*pcre16_free)(void *);
PCRE_EXP_DECL void *(*pcre16_stack_malloc)(size_t);
PCRE_EXP_DECL void (*pcre16_stack_free)(void *);
PCRE_EXP_DECL int (*pcre16_callout)(pcre16_callout_block *);
PCRE_EXP_DECL int (*pcre16_stack_guard)(void);
PCRE_EXP_DECL void *(*pcre32_malloc)(size_t);
PCRE_EXP_DECL void (*pcre32_free)(void *);
PCRE_EXP_DECL void *(*pcre32_stack_malloc)(size_t);
PCRE_EXP_DECL void (*pcre32_stack_free)(void *);
PCRE_EXP_DECL int (*pcre32_callout)(pcre32_callout_block *);
PCRE_EXP_DECL int (*pcre32_stack_guard)(void);
#else /* VPCOMPAT */
PCRE_EXP_DECL void *pcre_malloc(size_t);
PCRE_EXP_DECL void pcre_free(void *);
PCRE_EXP_DECL void *pcre_stack_malloc(size_t);
PCRE_EXP_DECL void pcre_stack_free(void *);
PCRE_EXP_DECL int pcre_callout(pcre_callout_block *);
PCRE_EXP_DECL int pcre_stack_guard(void);
PCRE_EXP_DECL void *pcre16_malloc(size_t);
PCRE_EXP_DECL void pcre16_free(void *);
PCRE_EXP_DECL void *pcre16_stack_malloc(size_t);
PCRE_EXP_DECL void pcre16_stack_free(void *);
PCRE_EXP_DECL int pcre16_callout(pcre16_callout_block *);
PCRE_EXP_DECL int pcre16_stack_guard(void);
PCRE_EXP_DECL void *pcre32_malloc(size_t);
PCRE_EXP_DECL void pcre32_free(void *);
PCRE_EXP_DECL void *pcre32_stack_malloc(size_t);
PCRE_EXP_DECL void pcre32_stack_free(void *);
PCRE_EXP_DECL int pcre32_callout(pcre32_callout_block *);
PCRE_EXP_DECL int pcre32_stack_guard(void);
#endif /* VPCOMPAT */
/* User defined callback which provides a stack just before the match starts. */
typedef pcre_jit_stack *(*pcre_jit_callback)(void *);
typedef pcre16_jit_stack *(*pcre16_jit_callback)(void *);
typedef pcre32_jit_stack *(*pcre32_jit_callback)(void *);
/* Exported PCRE functions */
PCRE_EXP_DECL pcre *pcre_compile(const char *, int, const char **, int *,
const unsigned char *);
PCRE_EXP_DECL pcre16 *pcre16_compile(PCRE_SPTR16, int, const char **, int *,
const unsigned char *);
PCRE_EXP_DECL pcre32 *pcre32_compile(PCRE_SPTR32, int, const char **, int *,
const unsigned char *);
PCRE_EXP_DECL pcre *pcre_compile2(const char *, int, int *, const char **,
int *, const unsigned char *);
PCRE_EXP_DECL pcre16 *pcre16_compile2(PCRE_SPTR16, int, int *, const char **,
int *, const unsigned char *);
PCRE_EXP_DECL pcre32 *pcre32_compile2(PCRE_SPTR32, int, int *, const char **,
int *, const unsigned char *);
PCRE_EXP_DECL int pcre_config(int, void *);
PCRE_EXP_DECL int pcre16_config(int, void *);
PCRE_EXP_DECL int pcre32_config(int, void *);
PCRE_EXP_DECL int pcre_copy_named_substring(const pcre *, const char *,
int *, int, const char *, char *, int);
PCRE_EXP_DECL int pcre16_copy_named_substring(const pcre16 *, PCRE_SPTR16,
int *, int, PCRE_SPTR16, PCRE_UCHAR16 *, int);
PCRE_EXP_DECL int pcre32_copy_named_substring(const pcre32 *, PCRE_SPTR32,
int *, int, PCRE_SPTR32, PCRE_UCHAR32 *, int);
PCRE_EXP_DECL int pcre_copy_substring(const char *, int *, int, int,
char *, int);
PCRE_EXP_DECL int pcre16_copy_substring(PCRE_SPTR16, int *, int, int,
PCRE_UCHAR16 *, int);
PCRE_EXP_DECL int pcre32_copy_substring(PCRE_SPTR32, int *, int, int,
PCRE_UCHAR32 *, int);
PCRE_EXP_DECL int pcre_dfa_exec(const pcre *, const pcre_extra *,
const char *, int, int, int, int *, int , int *, int);
PCRE_EXP_DECL int pcre16_dfa_exec(const pcre16 *, const pcre16_extra *,
PCRE_SPTR16, int, int, int, int *, int , int *, int);
PCRE_EXP_DECL int pcre32_dfa_exec(const pcre32 *, const pcre32_extra *,
PCRE_SPTR32, int, int, int, int *, int , int *, int);
PCRE_EXP_DECL int pcre_exec(const pcre *, const pcre_extra *, PCRE_SPTR,
int, int, int, int *, int);
PCRE_EXP_DECL int pcre16_exec(const pcre16 *, const pcre16_extra *,
PCRE_SPTR16, int, int, int, int *, int);
PCRE_EXP_DECL int pcre32_exec(const pcre32 *, const pcre32_extra *,
PCRE_SPTR32, int, int, int, int *, int);
PCRE_EXP_DECL int pcre_jit_exec(const pcre *, const pcre_extra *,
PCRE_SPTR, int, int, int, int *, int,
pcre_jit_stack *);
PCRE_EXP_DECL int pcre16_jit_exec(const pcre16 *, const pcre16_extra *,
PCRE_SPTR16, int, int, int, int *, int,
pcre16_jit_stack *);
PCRE_EXP_DECL int pcre32_jit_exec(const pcre32 *, const pcre32_extra *,
PCRE_SPTR32, int, int, int, int *, int,
pcre32_jit_stack *);
PCRE_EXP_DECL void pcre_free_substring(const char *);
PCRE_EXP_DECL void pcre16_free_substring(PCRE_SPTR16);
PCRE_EXP_DECL void pcre32_free_substring(PCRE_SPTR32);
PCRE_EXP_DECL void pcre_free_substring_list(const char **);
PCRE_EXP_DECL void pcre16_free_substring_list(PCRE_SPTR16 *);
PCRE_EXP_DECL void pcre32_free_substring_list(PCRE_SPTR32 *);
PCRE_EXP_DECL int pcre_fullinfo(const pcre *, const pcre_extra *, int,
void *);
PCRE_EXP_DECL int pcre16_fullinfo(const pcre16 *, const pcre16_extra *, int,
void *);
PCRE_EXP_DECL int pcre32_fullinfo(const pcre32 *, const pcre32_extra *, int,
void *);
PCRE_EXP_DECL int pcre_get_named_substring(const pcre *, const char *,
int *, int, const char *, const char **);
PCRE_EXP_DECL int pcre16_get_named_substring(const pcre16 *, PCRE_SPTR16,
int *, int, PCRE_SPTR16, PCRE_SPTR16 *);
PCRE_EXP_DECL int pcre32_get_named_substring(const pcre32 *, PCRE_SPTR32,
int *, int, PCRE_SPTR32, PCRE_SPTR32 *);
PCRE_EXP_DECL int pcre_get_stringnumber(const pcre *, const char *);
PCRE_EXP_DECL int pcre16_get_stringnumber(const pcre16 *, PCRE_SPTR16);
PCRE_EXP_DECL int pcre32_get_stringnumber(const pcre32 *, PCRE_SPTR32);
PCRE_EXP_DECL int pcre_get_stringtable_entries(const pcre *, const char *,
char **, char **);
PCRE_EXP_DECL int pcre16_get_stringtable_entries(const pcre16 *, PCRE_SPTR16,
PCRE_UCHAR16 **, PCRE_UCHAR16 **);
PCRE_EXP_DECL int pcre32_get_stringtable_entries(const pcre32 *, PCRE_SPTR32,
PCRE_UCHAR32 **, PCRE_UCHAR32 **);
PCRE_EXP_DECL int pcre_get_substring(const char *, int *, int, int,
const char **);
PCRE_EXP_DECL int pcre16_get_substring(PCRE_SPTR16, int *, int, int,
PCRE_SPTR16 *);
PCRE_EXP_DECL int pcre32_get_substring(PCRE_SPTR32, int *, int, int,
PCRE_SPTR32 *);
PCRE_EXP_DECL int pcre_get_substring_list(const char *, int *, int,
const char ***);
PCRE_EXP_DECL int pcre16_get_substring_list(PCRE_SPTR16, int *, int,
PCRE_SPTR16 **);
PCRE_EXP_DECL int pcre32_get_substring_list(PCRE_SPTR32, int *, int,
PCRE_SPTR32 **);
PCRE_EXP_DECL const unsigned char *pcre_maketables(void);
PCRE_EXP_DECL const unsigned char *pcre16_maketables(void);
PCRE_EXP_DECL const unsigned char *pcre32_maketables(void);
PCRE_EXP_DECL int pcre_refcount(pcre *, int);
PCRE_EXP_DECL int pcre16_refcount(pcre16 *, int);
PCRE_EXP_DECL int pcre32_refcount(pcre32 *, int);
PCRE_EXP_DECL pcre_extra *pcre_study(const pcre *, int, const char **);
PCRE_EXP_DECL pcre16_extra *pcre16_study(const pcre16 *, int, const char **);
PCRE_EXP_DECL pcre32_extra *pcre32_study(const pcre32 *, int, const char **);
PCRE_EXP_DECL void pcre_free_study(pcre_extra *);
PCRE_EXP_DECL void pcre16_free_study(pcre16_extra *);
PCRE_EXP_DECL void pcre32_free_study(pcre32_extra *);
PCRE_EXP_DECL const char *pcre_version(void);
PCRE_EXP_DECL const char *pcre16_version(void);
PCRE_EXP_DECL const char *pcre32_version(void);
/* Utility functions for byte order swaps. */
PCRE_EXP_DECL int pcre_pattern_to_host_byte_order(pcre *, pcre_extra *,
const unsigned char *);
PCRE_EXP_DECL int pcre16_pattern_to_host_byte_order(pcre16 *, pcre16_extra *,
const unsigned char *);
PCRE_EXP_DECL int pcre32_pattern_to_host_byte_order(pcre32 *, pcre32_extra *,
const unsigned char *);
PCRE_EXP_DECL int pcre16_utf16_to_host_byte_order(PCRE_UCHAR16 *,
PCRE_SPTR16, int, int *, int);
PCRE_EXP_DECL int pcre32_utf32_to_host_byte_order(PCRE_UCHAR32 *,
PCRE_SPTR32, int, int *, int);
/* JIT compiler related functions. */
PCRE_EXP_DECL pcre_jit_stack *pcre_jit_stack_alloc(int, int);
PCRE_EXP_DECL pcre16_jit_stack *pcre16_jit_stack_alloc(int, int);
PCRE_EXP_DECL pcre32_jit_stack *pcre32_jit_stack_alloc(int, int);
PCRE_EXP_DECL void pcre_jit_stack_free(pcre_jit_stack *);
PCRE_EXP_DECL void pcre16_jit_stack_free(pcre16_jit_stack *);
PCRE_EXP_DECL void pcre32_jit_stack_free(pcre32_jit_stack *);
PCRE_EXP_DECL void pcre_assign_jit_stack(pcre_extra *,
pcre_jit_callback, void *);
PCRE_EXP_DECL void pcre16_assign_jit_stack(pcre16_extra *,
pcre16_jit_callback, void *);
PCRE_EXP_DECL void pcre32_assign_jit_stack(pcre32_extra *,
pcre32_jit_callback, void *);
PCRE_EXP_DECL void pcre_jit_free_unused_memory(void);
PCRE_EXP_DECL void pcre16_jit_free_unused_memory(void);
PCRE_EXP_DECL void pcre32_jit_free_unused_memory(void);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* End of pcre.h */

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// Copyright (c) 2005, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Author: Sanjay Ghemawat
//
// Regular-expression based scanner for parsing an input stream.
//
// Example 1: parse a sequence of "var = number" entries from input:
//
// Scanner scanner(input);
// string var;
// int number;
// scanner.SetSkipExpression("\\s+"); // Skip any white space we encounter
// while (scanner.Consume("(\\w+) = (\\d+)", &var, &number)) {
// ...;
// }
#ifndef _PCRE_SCANNER_H
#define _PCRE_SCANNER_H
#include <assert.h>
#include <string>
#include <vector>
#include <pcrecpp.h>
#include <pcre_stringpiece.h>
namespace pcrecpp {
class PCRECPP_EXP_DEFN Scanner {
public:
Scanner();
explicit Scanner(const std::string& input);
~Scanner();
// Return current line number. The returned line-number is
// one-based. I.e. it returns 1 + the number of consumed newlines.
//
// Note: this method may be slow. It may take time proportional to
// the size of the input.
int LineNumber() const;
// Return the byte-offset that the scanner is looking in the
// input data;
int Offset() const;
// Return true iff the start of the remaining input matches "re"
bool LookingAt(const RE& re) const;
// Return true iff all of the following are true
// a. the start of the remaining input matches "re",
// b. if any arguments are supplied, matched sub-patterns can be
// parsed and stored into the arguments.
// If it returns true, it skips over the matched input and any
// following input that matches the "skip" regular expression.
bool Consume(const RE& re,
const Arg& arg0 = RE::no_arg,
const Arg& arg1 = RE::no_arg,
const Arg& arg2 = RE::no_arg
// TODO: Allow more arguments?
);
// Set the "skip" regular expression. If after consuming some data,
// a prefix of the input matches this RE, it is automatically
// skipped. For example, a programming language scanner would use
// a skip RE that matches white space and comments.
//
// scanner.SetSkipExpression("\\s+|//.*|/[*](.|\n)*?[*]/");
//
// Skipping repeats as long as it succeeds. We used to let people do
// this by writing "(...)*" in the regular expression, but that added
// up to lots of recursive calls within the pcre library, so now we
// control repetition explicitly via the function call API.
//
// You can pass NULL for "re" if you do not want any data to be skipped.
void Skip(const char* re); // DEPRECATED; does *not* repeat
void SetSkipExpression(const char* re);
// Temporarily pause "skip"ing. This
// Skip("Foo"); code ; DisableSkip(); code; EnableSkip()
// is similar to
// Skip("Foo"); code ; Skip(NULL); code ; Skip("Foo");
// but avoids creating/deleting new RE objects.
void DisableSkip();
// Reenable previously paused skipping. Any prefix of the input
// that matches the skip pattern is immediately dropped.
void EnableSkip();
/***** Special wrappers around SetSkip() for some common idioms *****/
// Arranges to skip whitespace, C comments, C++ comments.
// The overall RE is a disjunction of the following REs:
// \\s whitespace
// //.*\n C++ comment
// /[*](.|\n)*?[*]/ C comment (x*? means minimal repetitions of x)
// We get repetition via the semantics of SetSkipExpression, not by using *
void SkipCXXComments() {
SetSkipExpression("\\s|//.*\n|/[*](?:\n|.)*?[*]/");
}
void set_save_comments(bool comments) {
save_comments_ = comments;
}
bool save_comments() {
return save_comments_;
}
// Append to vector ranges the comments found in the
// byte range [start,end] (inclusive) of the input data.
// Only comments that were extracted entirely within that
// range are returned: no range splitting of atomically-extracted
// comments is performed.
void GetComments(int start, int end, std::vector<StringPiece> *ranges);
// Append to vector ranges the comments added
// since the last time this was called. This
// functionality is provided for efficiency when
// interleaving scanning with parsing.
void GetNextComments(std::vector<StringPiece> *ranges);
private:
std::string data_; // All the input data
StringPiece input_; // Unprocessed input
RE* skip_; // If non-NULL, RE for skipping input
bool should_skip_; // If true, use skip_
bool skip_repeat_; // If true, repeat skip_ as long as it works
bool save_comments_; // If true, aggregate the skip expression
// the skipped comments
// TODO: later consider requiring that the StringPieces be added
// in order by their start position
std::vector<StringPiece> *comments_;
// the offset into comments_ that has been returned by GetNextComments
int comments_offset_;
// helper function to consume *skip_ and honour
// save_comments_
void ConsumeSkip();
};
} // namespace pcrecpp
#endif /* _PCRE_SCANNER_H */

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// Copyright (c) 2005, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Author: Sanjay Ghemawat
//
// A string like object that points into another piece of memory.
// Useful for providing an interface that allows clients to easily
// pass in either a "const char*" or a "string".
//
// Arghh! I wish C++ literals were automatically of type "string".
#ifndef _PCRE_STRINGPIECE_H
#define _PCRE_STRINGPIECE_H
#include <cstring>
#include <string>
#include <iosfwd> // for ostream forward-declaration
#if 0
#define HAVE_TYPE_TRAITS
#include <type_traits.h>
#elif 0
#define HAVE_TYPE_TRAITS
#include <bits/type_traits.h>
#endif
#include <pcre.h>
namespace pcrecpp {
using std::memcmp;
using std::strlen;
using std::string;
class PCRECPP_EXP_DEFN StringPiece {
private:
const char* ptr_;
int length_;
public:
// We provide non-explicit singleton constructors so users can pass
// in a "const char*" or a "string" wherever a "StringPiece" is
// expected.
StringPiece()
: ptr_(NULL), length_(0) { }
StringPiece(const char* str)
: ptr_(str), length_(static_cast<int>(strlen(ptr_))) { }
StringPiece(const unsigned char* str)
: ptr_(reinterpret_cast<const char*>(str)),
length_(static_cast<int>(strlen(ptr_))) { }
StringPiece(const string& str)
: ptr_(str.data()), length_(static_cast<int>(str.size())) { }
StringPiece(const char* offset, int len)
: ptr_(offset), length_(len) { }
// data() may return a pointer to a buffer with embedded NULs, and the
// returned buffer may or may not be null terminated. Therefore it is
// typically a mistake to pass data() to a routine that expects a NUL
// terminated string. Use "as_string().c_str()" if you really need to do
// this. Or better yet, change your routine so it does not rely on NUL
// termination.
const char* data() const { return ptr_; }
int size() const { return length_; }
bool empty() const { return length_ == 0; }
void clear() { ptr_ = NULL; length_ = 0; }
void set(const char* buffer, int len) { ptr_ = buffer; length_ = len; }
void set(const char* str) {
ptr_ = str;
length_ = static_cast<int>(strlen(str));
}
void set(const void* buffer, int len) {
ptr_ = reinterpret_cast<const char*>(buffer);
length_ = len;
}
char operator[](int i) const { return ptr_[i]; }
void remove_prefix(int n) {
ptr_ += n;
length_ -= n;
}
void remove_suffix(int n) {
length_ -= n;
}
bool operator==(const StringPiece& x) const {
return ((length_ == x.length_) &&
(memcmp(ptr_, x.ptr_, length_) == 0));
}
bool operator!=(const StringPiece& x) const {
return !(*this == x);
}
#define STRINGPIECE_BINARY_PREDICATE(cmp,auxcmp) \
bool operator cmp (const StringPiece& x) const { \
int r = memcmp(ptr_, x.ptr_, length_ < x.length_ ? length_ : x.length_); \
return ((r auxcmp 0) || ((r == 0) && (length_ cmp x.length_))); \
}
STRINGPIECE_BINARY_PREDICATE(<, <);
STRINGPIECE_BINARY_PREDICATE(<=, <);
STRINGPIECE_BINARY_PREDICATE(>=, >);
STRINGPIECE_BINARY_PREDICATE(>, >);
#undef STRINGPIECE_BINARY_PREDICATE
int compare(const StringPiece& x) const {
int r = memcmp(ptr_, x.ptr_, length_ < x.length_ ? length_ : x.length_);
if (r == 0) {
if (length_ < x.length_) r = -1;
else if (length_ > x.length_) r = +1;
}
return r;
}
string as_string() const {
return string(data(), size());
}
void CopyToString(string* target) const {
target->assign(ptr_, length_);
}
// Does "this" start with "x"
bool starts_with(const StringPiece& x) const {
return ((length_ >= x.length_) && (memcmp(ptr_, x.ptr_, x.length_) == 0));
}
};
} // namespace pcrecpp
// ------------------------------------------------------------------
// Functions used to create STL containers that use StringPiece
// Remember that a StringPiece's lifetime had better be less than
// that of the underlying string or char*. If it is not, then you
// cannot safely store a StringPiece into an STL container
// ------------------------------------------------------------------
#ifdef HAVE_TYPE_TRAITS
// This makes vector<StringPiece> really fast for some STL implementations
template<> struct __type_traits<pcrecpp::StringPiece> {
typedef __true_type has_trivial_default_constructor;
typedef __true_type has_trivial_copy_constructor;
typedef __true_type has_trivial_assignment_operator;
typedef __true_type has_trivial_destructor;
typedef __true_type is_POD_type;
};
#endif
// allow StringPiece to be logged
PCRECPP_EXP_DECL std::ostream& operator<<(std::ostream& o,
const pcrecpp::StringPiece& piece);
#endif /* _PCRE_STRINGPIECE_H */

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// Copyright (c) 2005, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Author: Sanjay Ghemawat
// Support for PCRE_XXX modifiers added by Giuseppe Maxia, July 2005
#ifndef _PCRECPP_H
#define _PCRECPP_H
// C++ interface to the pcre regular-expression library. RE supports
// Perl-style regular expressions (with extensions like \d, \w, \s,
// ...).
//
// -----------------------------------------------------------------------
// REGEXP SYNTAX:
//
// This module is part of the pcre library and hence supports its syntax
// for regular expressions.
//
// The syntax is pretty similar to Perl's. For those not familiar
// with Perl's regular expressions, here are some examples of the most
// commonly used extensions:
//
// "hello (\\w+) world" -- \w matches a "word" character
// "version (\\d+)" -- \d matches a digit
// "hello\\s+world" -- \s matches any whitespace character
// "\\b(\\w+)\\b" -- \b matches empty string at a word boundary
// "(?i)hello" -- (?i) turns on case-insensitive matching
// "/\\*(.*?)\\*/" -- .*? matches . minimum no. of times possible
//
// -----------------------------------------------------------------------
// MATCHING INTERFACE:
//
// The "FullMatch" operation checks that supplied text matches a
// supplied pattern exactly.
//
// Example: successful match
// pcrecpp::RE re("h.*o");
// re.FullMatch("hello");
//
// Example: unsuccessful match (requires full match):
// pcrecpp::RE re("e");
// !re.FullMatch("hello");
//
// Example: creating a temporary RE object:
// pcrecpp::RE("h.*o").FullMatch("hello");
//
// You can pass in a "const char*" or a "string" for "text". The
// examples below tend to use a const char*.
//
// You can, as in the different examples above, store the RE object
// explicitly in a variable or use a temporary RE object. The
// examples below use one mode or the other arbitrarily. Either
// could correctly be used for any of these examples.
//
// -----------------------------------------------------------------------
// MATCHING WITH SUB-STRING EXTRACTION:
//
// You can supply extra pointer arguments to extract matched subpieces.
//
// Example: extracts "ruby" into "s" and 1234 into "i"
// int i;
// string s;
// pcrecpp::RE re("(\\w+):(\\d+)");
// re.FullMatch("ruby:1234", &s, &i);
//
// Example: does not try to extract any extra sub-patterns
// re.FullMatch("ruby:1234", &s);
//
// Example: does not try to extract into NULL
// re.FullMatch("ruby:1234", NULL, &i);
//
// Example: integer overflow causes failure
// !re.FullMatch("ruby:1234567891234", NULL, &i);
//
// Example: fails because there aren't enough sub-patterns:
// !pcrecpp::RE("\\w+:\\d+").FullMatch("ruby:1234", &s);
//
// Example: fails because string cannot be stored in integer
// !pcrecpp::RE("(.*)").FullMatch("ruby", &i);
//
// The provided pointer arguments can be pointers to any scalar numeric
// type, or one of
// string (matched piece is copied to string)
// StringPiece (StringPiece is mutated to point to matched piece)
// T (where "bool T::ParseFrom(const char*, int)" exists)
// NULL (the corresponding matched sub-pattern is not copied)
//
// CAVEAT: An optional sub-pattern that does not exist in the matched
// string is assigned the empty string. Therefore, the following will
// return false (because the empty string is not a valid number):
// int number;
// pcrecpp::RE::FullMatch("abc", "[a-z]+(\\d+)?", &number);
//
// -----------------------------------------------------------------------
// DO_MATCH
//
// The matching interface supports at most 16 arguments per call.
// If you need more, consider using the more general interface
// pcrecpp::RE::DoMatch(). See pcrecpp.h for the signature for DoMatch.
//
// -----------------------------------------------------------------------
// PARTIAL MATCHES
//
// You can use the "PartialMatch" operation when you want the pattern
// to match any substring of the text.
//
// Example: simple search for a string:
// pcrecpp::RE("ell").PartialMatch("hello");
//
// Example: find first number in a string:
// int number;
// pcrecpp::RE re("(\\d+)");
// re.PartialMatch("x*100 + 20", &number);
// assert(number == 100);
//
// -----------------------------------------------------------------------
// UTF-8 AND THE MATCHING INTERFACE:
//
// By default, pattern and text are plain text, one byte per character.
// The UTF8 flag, passed to the constructor, causes both pattern
// and string to be treated as UTF-8 text, still a byte stream but
// potentially multiple bytes per character. In practice, the text
// is likelier to be UTF-8 than the pattern, but the match returned
// may depend on the UTF8 flag, so always use it when matching
// UTF8 text. E.g., "." will match one byte normally but with UTF8
// set may match up to three bytes of a multi-byte character.
//
// Example:
// pcrecpp::RE_Options options;
// options.set_utf8();
// pcrecpp::RE re(utf8_pattern, options);
// re.FullMatch(utf8_string);
//
// Example: using the convenience function UTF8():
// pcrecpp::RE re(utf8_pattern, pcrecpp::UTF8());
// re.FullMatch(utf8_string);
//
// NOTE: The UTF8 option is ignored if pcre was not configured with the
// --enable-utf8 flag.
//
// -----------------------------------------------------------------------
// PASSING MODIFIERS TO THE REGULAR EXPRESSION ENGINE
//
// PCRE defines some modifiers to change the behavior of the regular
// expression engine.
// The C++ wrapper defines an auxiliary class, RE_Options, as a vehicle
// to pass such modifiers to a RE class.
//
// Currently, the following modifiers are supported
//
// modifier description Perl corresponding
//
// PCRE_CASELESS case insensitive match /i
// PCRE_MULTILINE multiple lines match /m
// PCRE_DOTALL dot matches newlines /s
// PCRE_DOLLAR_ENDONLY $ matches only at end N/A
// PCRE_EXTRA strict escape parsing N/A
// PCRE_EXTENDED ignore whitespaces /x
// PCRE_UTF8 handles UTF8 chars built-in
// PCRE_UNGREEDY reverses * and *? N/A
// PCRE_NO_AUTO_CAPTURE disables matching parens N/A (*)
//
// (For a full account on how each modifier works, please check the
// PCRE API reference manual).
//
// (*) Both Perl and PCRE allow non matching parentheses by means of the
// "?:" modifier within the pattern itself. e.g. (?:ab|cd) does not
// capture, while (ab|cd) does.
//
// For each modifier, there are two member functions whose name is made
// out of the modifier in lowercase, without the "PCRE_" prefix. For
// instance, PCRE_CASELESS is handled by
// bool caseless(),
// which returns true if the modifier is set, and
// RE_Options & set_caseless(bool),
// which sets or unsets the modifier.
//
// Moreover, PCRE_EXTRA_MATCH_LIMIT can be accessed through the
// set_match_limit() and match_limit() member functions.
// Setting match_limit to a non-zero value will limit the executation of
// pcre to keep it from doing bad things like blowing the stack or taking
// an eternity to return a result. A value of 5000 is good enough to stop
// stack blowup in a 2MB thread stack. Setting match_limit to zero will
// disable match limiting. Alternately, you can set match_limit_recursion()
// which uses PCRE_EXTRA_MATCH_LIMIT_RECURSION to limit how much pcre
// recurses. match_limit() caps the number of matches pcre does;
// match_limit_recrusion() caps the depth of recursion.
//
// Normally, to pass one or more modifiers to a RE class, you declare
// a RE_Options object, set the appropriate options, and pass this
// object to a RE constructor. Example:
//
// RE_options opt;
// opt.set_caseless(true);
//
// if (RE("HELLO", opt).PartialMatch("hello world")) ...
//
// RE_options has two constructors. The default constructor takes no
// arguments and creates a set of flags that are off by default.
//
// The optional parameter 'option_flags' is to facilitate transfer
// of legacy code from C programs. This lets you do
// RE(pattern, RE_Options(PCRE_CASELESS|PCRE_MULTILINE)).PartialMatch(str);
//
// But new code is better off doing
// RE(pattern,
// RE_Options().set_caseless(true).set_multiline(true)).PartialMatch(str);
// (See below)
//
// If you are going to pass one of the most used modifiers, there are some
// convenience functions that return a RE_Options class with the
// appropriate modifier already set:
// CASELESS(), UTF8(), MULTILINE(), DOTALL(), EXTENDED()
//
// If you need to set several options at once, and you don't want to go
// through the pains of declaring a RE_Options object and setting several
// options, there is a parallel method that give you such ability on the
// fly. You can concatenate several set_xxxxx member functions, since each
// of them returns a reference to its class object. e.g.: to pass
// PCRE_CASELESS, PCRE_EXTENDED, and PCRE_MULTILINE to a RE with one
// statement, you may write
//
// RE(" ^ xyz \\s+ .* blah$", RE_Options()
// .set_caseless(true)
// .set_extended(true)
// .set_multiline(true)).PartialMatch(sometext);
//
// -----------------------------------------------------------------------
// SCANNING TEXT INCREMENTALLY
//
// The "Consume" operation may be useful if you want to repeatedly
// match regular expressions at the front of a string and skip over
// them as they match. This requires use of the "StringPiece" type,
// which represents a sub-range of a real string. Like RE, StringPiece
// is defined in the pcrecpp namespace.
//
// Example: read lines of the form "var = value" from a string.
// string contents = ...; // Fill string somehow
// pcrecpp::StringPiece input(contents); // Wrap in a StringPiece
//
// string var;
// int value;
// pcrecpp::RE re("(\\w+) = (\\d+)\n");
// while (re.Consume(&input, &var, &value)) {
// ...;
// }
//
// Each successful call to "Consume" will set "var/value", and also
// advance "input" so it points past the matched text.
//
// The "FindAndConsume" operation is similar to "Consume" but does not
// anchor your match at the beginning of the string. For example, you
// could extract all words from a string by repeatedly calling
// pcrecpp::RE("(\\w+)").FindAndConsume(&input, &word)
//
// -----------------------------------------------------------------------
// PARSING HEX/OCTAL/C-RADIX NUMBERS
//
// By default, if you pass a pointer to a numeric value, the
// corresponding text is interpreted as a base-10 number. You can
// instead wrap the pointer with a call to one of the operators Hex(),
// Octal(), or CRadix() to interpret the text in another base. The
// CRadix operator interprets C-style "0" (base-8) and "0x" (base-16)
// prefixes, but defaults to base-10.
//
// Example:
// int a, b, c, d;
// pcrecpp::RE re("(.*) (.*) (.*) (.*)");
// re.FullMatch("100 40 0100 0x40",
// pcrecpp::Octal(&a), pcrecpp::Hex(&b),
// pcrecpp::CRadix(&c), pcrecpp::CRadix(&d));
// will leave 64 in a, b, c, and d.
//
// -----------------------------------------------------------------------
// REPLACING PARTS OF STRINGS
//
// You can replace the first match of "pattern" in "str" with
// "rewrite". Within "rewrite", backslash-escaped digits (\1 to \9)
// can be used to insert text matching corresponding parenthesized
// group from the pattern. \0 in "rewrite" refers to the entire
// matching text. E.g.,
//
// string s = "yabba dabba doo";
// pcrecpp::RE("b+").Replace("d", &s);
//
// will leave "s" containing "yada dabba doo". The result is true if
// the pattern matches and a replacement occurs, or false otherwise.
//
// GlobalReplace() is like Replace(), except that it replaces all
// occurrences of the pattern in the string with the rewrite.
// Replacements are not subject to re-matching. E.g.,
//
// string s = "yabba dabba doo";
// pcrecpp::RE("b+").GlobalReplace("d", &s);
//
// will leave "s" containing "yada dada doo". It returns the number
// of replacements made.
//
// Extract() is like Replace(), except that if the pattern matches,
// "rewrite" is copied into "out" (an additional argument) with
// substitutions. The non-matching portions of "text" are ignored.
// Returns true iff a match occurred and the extraction happened
// successfully. If no match occurs, the string is left unaffected.
#include <string>
#include <pcre.h>
#include <pcrecpparg.h> // defines the Arg class
// This isn't technically needed here, but we include it
// anyway so folks who include pcrecpp.h don't have to.
#include <pcre_stringpiece.h>
namespace pcrecpp {
#define PCRE_SET_OR_CLEAR(b, o) \
if (b) all_options_ |= (o); else all_options_ &= ~(o); \
return *this
#define PCRE_IS_SET(o) \
(all_options_ & o) == o
/***** Compiling regular expressions: the RE class *****/
// RE_Options allow you to set options to be passed along to pcre,
// along with other options we put on top of pcre.
// Only 9 modifiers, plus match_limit and match_limit_recursion,
// are supported now.
class PCRECPP_EXP_DEFN RE_Options {
public:
// constructor
RE_Options() : match_limit_(0), match_limit_recursion_(0), all_options_(0) {}
// alternative constructor.
// To facilitate transfer of legacy code from C programs
//
// This lets you do
// RE(pattern, RE_Options(PCRE_CASELESS|PCRE_MULTILINE)).PartialMatch(str);
// But new code is better off doing
// RE(pattern,
// RE_Options().set_caseless(true).set_multiline(true)).PartialMatch(str);
RE_Options(int option_flags) : match_limit_(0), match_limit_recursion_(0),
all_options_(option_flags) {}
// we're fine with the default destructor, copy constructor, etc.
// accessors and mutators
int match_limit() const { return match_limit_; };
RE_Options &set_match_limit(int limit) {
match_limit_ = limit;
return *this;
}
int match_limit_recursion() const { return match_limit_recursion_; };
RE_Options &set_match_limit_recursion(int limit) {
match_limit_recursion_ = limit;
return *this;
}
bool caseless() const {
return PCRE_IS_SET(PCRE_CASELESS);
}
RE_Options &set_caseless(bool x) {
PCRE_SET_OR_CLEAR(x, PCRE_CASELESS);
}
bool multiline() const {
return PCRE_IS_SET(PCRE_MULTILINE);
}
RE_Options &set_multiline(bool x) {
PCRE_SET_OR_CLEAR(x, PCRE_MULTILINE);
}
bool dotall() const {
return PCRE_IS_SET(PCRE_DOTALL);
}
RE_Options &set_dotall(bool x) {
PCRE_SET_OR_CLEAR(x, PCRE_DOTALL);
}
bool extended() const {
return PCRE_IS_SET(PCRE_EXTENDED);
}
RE_Options &set_extended(bool x) {
PCRE_SET_OR_CLEAR(x, PCRE_EXTENDED);
}
bool dollar_endonly() const {
return PCRE_IS_SET(PCRE_DOLLAR_ENDONLY);
}
RE_Options &set_dollar_endonly(bool x) {
PCRE_SET_OR_CLEAR(x, PCRE_DOLLAR_ENDONLY);
}
bool extra() const {
return PCRE_IS_SET(PCRE_EXTRA);
}
RE_Options &set_extra(bool x) {
PCRE_SET_OR_CLEAR(x, PCRE_EXTRA);
}
bool ungreedy() const {
return PCRE_IS_SET(PCRE_UNGREEDY);
}
RE_Options &set_ungreedy(bool x) {
PCRE_SET_OR_CLEAR(x, PCRE_UNGREEDY);
}
bool utf8() const {
return PCRE_IS_SET(PCRE_UTF8);
}
RE_Options &set_utf8(bool x) {
PCRE_SET_OR_CLEAR(x, PCRE_UTF8);
}
bool no_auto_capture() const {
return PCRE_IS_SET(PCRE_NO_AUTO_CAPTURE);
}
RE_Options &set_no_auto_capture(bool x) {
PCRE_SET_OR_CLEAR(x, PCRE_NO_AUTO_CAPTURE);
}
RE_Options &set_all_options(int opt) {
all_options_ = opt;
return *this;
}
int all_options() const {
return all_options_ ;
}
// TODO: add other pcre flags
private:
int match_limit_;
int match_limit_recursion_;
int all_options_;
};
// These functions return some common RE_Options
static inline RE_Options UTF8() {
return RE_Options().set_utf8(true);
}
static inline RE_Options CASELESS() {
return RE_Options().set_caseless(true);
}
static inline RE_Options MULTILINE() {
return RE_Options().set_multiline(true);
}
static inline RE_Options DOTALL() {
return RE_Options().set_dotall(true);
}
static inline RE_Options EXTENDED() {
return RE_Options().set_extended(true);
}
// Interface for regular expression matching. Also corresponds to a
// pre-compiled regular expression. An "RE" object is safe for
// concurrent use by multiple threads.
class PCRECPP_EXP_DEFN RE {
public:
// We provide implicit conversions from strings so that users can
// pass in a string or a "const char*" wherever an "RE" is expected.
RE(const string& pat) { Init(pat, NULL); }
RE(const string& pat, const RE_Options& option) { Init(pat, &option); }
RE(const char* pat) { Init(pat, NULL); }
RE(const char* pat, const RE_Options& option) { Init(pat, &option); }
RE(const unsigned char* pat) {
Init(reinterpret_cast<const char*>(pat), NULL);
}
RE(const unsigned char* pat, const RE_Options& option) {
Init(reinterpret_cast<const char*>(pat), &option);
}
// Copy constructor & assignment - note that these are expensive
// because they recompile the expression.
RE(const RE& re) { Init(re.pattern_, &re.options_); }
const RE& operator=(const RE& re) {
if (this != &re) {
Cleanup();
// This is the code that originally came from Google
// Init(re.pattern_.c_str(), &re.options_);
// This is the replacement from Ari Pollak
Init(re.pattern_, &re.options_);
}
return *this;
}
~RE();
// The string specification for this RE. E.g.
// RE re("ab*c?d+");
// re.pattern(); // "ab*c?d+"
const string& pattern() const { return pattern_; }
// If RE could not be created properly, returns an error string.
// Else returns the empty string.
const string& error() const { return *error_; }
/***** The useful part: the matching interface *****/
// This is provided so one can do pattern.ReplaceAll() just as
// easily as ReplaceAll(pattern-text, ....)
bool FullMatch(const StringPiece& text,
const Arg& ptr1 = no_arg,
const Arg& ptr2 = no_arg,
const Arg& ptr3 = no_arg,
const Arg& ptr4 = no_arg,
const Arg& ptr5 = no_arg,
const Arg& ptr6 = no_arg,
const Arg& ptr7 = no_arg,
const Arg& ptr8 = no_arg,
const Arg& ptr9 = no_arg,
const Arg& ptr10 = no_arg,
const Arg& ptr11 = no_arg,
const Arg& ptr12 = no_arg,
const Arg& ptr13 = no_arg,
const Arg& ptr14 = no_arg,
const Arg& ptr15 = no_arg,
const Arg& ptr16 = no_arg) const;
bool PartialMatch(const StringPiece& text,
const Arg& ptr1 = no_arg,
const Arg& ptr2 = no_arg,
const Arg& ptr3 = no_arg,
const Arg& ptr4 = no_arg,
const Arg& ptr5 = no_arg,
const Arg& ptr6 = no_arg,
const Arg& ptr7 = no_arg,
const Arg& ptr8 = no_arg,
const Arg& ptr9 = no_arg,
const Arg& ptr10 = no_arg,
const Arg& ptr11 = no_arg,
const Arg& ptr12 = no_arg,
const Arg& ptr13 = no_arg,
const Arg& ptr14 = no_arg,
const Arg& ptr15 = no_arg,
const Arg& ptr16 = no_arg) const;
bool Consume(StringPiece* input,
const Arg& ptr1 = no_arg,
const Arg& ptr2 = no_arg,
const Arg& ptr3 = no_arg,
const Arg& ptr4 = no_arg,
const Arg& ptr5 = no_arg,
const Arg& ptr6 = no_arg,
const Arg& ptr7 = no_arg,
const Arg& ptr8 = no_arg,
const Arg& ptr9 = no_arg,
const Arg& ptr10 = no_arg,
const Arg& ptr11 = no_arg,
const Arg& ptr12 = no_arg,
const Arg& ptr13 = no_arg,
const Arg& ptr14 = no_arg,
const Arg& ptr15 = no_arg,
const Arg& ptr16 = no_arg) const;
bool FindAndConsume(StringPiece* input,
const Arg& ptr1 = no_arg,
const Arg& ptr2 = no_arg,
const Arg& ptr3 = no_arg,
const Arg& ptr4 = no_arg,
const Arg& ptr5 = no_arg,
const Arg& ptr6 = no_arg,
const Arg& ptr7 = no_arg,
const Arg& ptr8 = no_arg,
const Arg& ptr9 = no_arg,
const Arg& ptr10 = no_arg,
const Arg& ptr11 = no_arg,
const Arg& ptr12 = no_arg,
const Arg& ptr13 = no_arg,
const Arg& ptr14 = no_arg,
const Arg& ptr15 = no_arg,
const Arg& ptr16 = no_arg) const;
bool Replace(const StringPiece& rewrite,
string *str) const;
int GlobalReplace(const StringPiece& rewrite,
string *str) const;
bool Extract(const StringPiece &rewrite,
const StringPiece &text,
string *out) const;
// Escapes all potentially meaningful regexp characters in
// 'unquoted'. The returned string, used as a regular expression,
// will exactly match the original string. For example,
// 1.5-2.0?
// may become:
// 1\.5\-2\.0\?
// Note QuoteMeta behaves the same as perl's QuoteMeta function,
// *except* that it escapes the NUL character (\0) as backslash + 0,
// rather than backslash + NUL.
static string QuoteMeta(const StringPiece& unquoted);
/***** Generic matching interface *****/
// Type of match (TODO: Should be restructured as part of RE_Options)
enum Anchor {
UNANCHORED, // No anchoring
ANCHOR_START, // Anchor at start only
ANCHOR_BOTH // Anchor at start and end
};
// General matching routine. Stores the length of the match in
// "*consumed" if successful.
bool DoMatch(const StringPiece& text,
Anchor anchor,
int* consumed,
const Arg* const* args, int n) const;
// Return the number of capturing subpatterns, or -1 if the
// regexp wasn't valid on construction.
int NumberOfCapturingGroups() const;
// The default value for an argument, to indicate the end of the argument
// list. This must be used only in optional argument defaults. It should NOT
// be passed explicitly. Some people have tried to use it like this:
//
// FullMatch(x, y, &z, no_arg, &w);
//
// This is a mistake, and will not work.
static Arg no_arg;
private:
void Init(const string& pattern, const RE_Options* options);
void Cleanup();
// Match against "text", filling in "vec" (up to "vecsize" * 2/3) with
// pairs of integers for the beginning and end positions of matched
// text. The first pair corresponds to the entire matched text;
// subsequent pairs correspond, in order, to parentheses-captured
// matches. Returns the number of pairs (one more than the number of
// the last subpattern with a match) if matching was successful
// and zero if the match failed.
// I.e. for RE("(foo)|(bar)|(baz)") it will return 2, 3, and 4 when matching
// against "foo", "bar", and "baz" respectively.
// When matching RE("(foo)|hello") against "hello", it will return 1.
// But the values for all subpattern are filled in into "vec".
int TryMatch(const StringPiece& text,
int startpos,
Anchor anchor,
bool empty_ok,
int *vec,
int vecsize) const;
// Append the "rewrite" string, with backslash subsitutions from "text"
// and "vec", to string "out".
bool Rewrite(string *out,
const StringPiece& rewrite,
const StringPiece& text,
int *vec,
int veclen) const;
// internal implementation for DoMatch
bool DoMatchImpl(const StringPiece& text,
Anchor anchor,
int* consumed,
const Arg* const args[],
int n,
int* vec,
int vecsize) const;
// Compile the regexp for the specified anchoring mode
pcre* Compile(Anchor anchor);
string pattern_;
RE_Options options_;
pcre* re_full_; // For full matches
pcre* re_partial_; // For partial matches
const string* error_; // Error indicator (or points to empty string)
};
} // namespace pcrecpp
#endif /* _PCRECPP_H */

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// Copyright (c) 2005, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Author: Sanjay Ghemawat
#ifndef _PCRECPPARG_H
#define _PCRECPPARG_H
#include <stdlib.h> // for NULL
#include <string>
#include <pcre.h>
namespace pcrecpp {
class StringPiece;
// Hex/Octal/Binary?
// Special class for parsing into objects that define a ParseFrom() method
template <class T>
class _RE_MatchObject {
public:
static inline bool Parse(const char* str, int n, void* dest) {
if (dest == NULL) return true;
T* object = reinterpret_cast<T*>(dest);
return object->ParseFrom(str, n);
}
};
class PCRECPP_EXP_DEFN Arg {
public:
// Empty constructor so we can declare arrays of Arg
Arg();
// Constructor specially designed for NULL arguments
Arg(void*);
typedef bool (*Parser)(const char* str, int n, void* dest);
// Type-specific parsers
#define PCRE_MAKE_PARSER(type,name) \
Arg(type* p) : arg_(p), parser_(name) { } \
Arg(type* p, Parser parser) : arg_(p), parser_(parser) { }
PCRE_MAKE_PARSER(char, parse_char);
PCRE_MAKE_PARSER(unsigned char, parse_uchar);
PCRE_MAKE_PARSER(short, parse_short);
PCRE_MAKE_PARSER(unsigned short, parse_ushort);
PCRE_MAKE_PARSER(int, parse_int);
PCRE_MAKE_PARSER(unsigned int, parse_uint);
PCRE_MAKE_PARSER(long, parse_long);
PCRE_MAKE_PARSER(unsigned long, parse_ulong);
#if 1
PCRE_MAKE_PARSER(long long, parse_longlong);
#endif
#if 1
PCRE_MAKE_PARSER(unsigned long long, parse_ulonglong);
#endif
PCRE_MAKE_PARSER(float, parse_float);
PCRE_MAKE_PARSER(double, parse_double);
PCRE_MAKE_PARSER(std::string, parse_string);
PCRE_MAKE_PARSER(StringPiece, parse_stringpiece);
#undef PCRE_MAKE_PARSER
// Generic constructor
template <class T> Arg(T*, Parser parser);
// Generic constructor template
template <class T> Arg(T* p)
: arg_(p), parser_(_RE_MatchObject<T>::Parse) {
}
// Parse the data
bool Parse(const char* str, int n) const;
private:
void* arg_;
Parser parser_;
static bool parse_null (const char* str, int n, void* dest);
static bool parse_char (const char* str, int n, void* dest);
static bool parse_uchar (const char* str, int n, void* dest);
static bool parse_float (const char* str, int n, void* dest);
static bool parse_double (const char* str, int n, void* dest);
static bool parse_string (const char* str, int n, void* dest);
static bool parse_stringpiece (const char* str, int n, void* dest);
#define PCRE_DECLARE_INTEGER_PARSER(name) \
private: \
static bool parse_ ## name(const char* str, int n, void* dest); \
static bool parse_ ## name ## _radix( \
const char* str, int n, void* dest, int radix); \
public: \
static bool parse_ ## name ## _hex(const char* str, int n, void* dest); \
static bool parse_ ## name ## _octal(const char* str, int n, void* dest); \
static bool parse_ ## name ## _cradix(const char* str, int n, void* dest)
PCRE_DECLARE_INTEGER_PARSER(short);
PCRE_DECLARE_INTEGER_PARSER(ushort);
PCRE_DECLARE_INTEGER_PARSER(int);
PCRE_DECLARE_INTEGER_PARSER(uint);
PCRE_DECLARE_INTEGER_PARSER(long);
PCRE_DECLARE_INTEGER_PARSER(ulong);
PCRE_DECLARE_INTEGER_PARSER(longlong);
PCRE_DECLARE_INTEGER_PARSER(ulonglong);
#undef PCRE_DECLARE_INTEGER_PARSER
};
inline Arg::Arg() : arg_(NULL), parser_(parse_null) { }
inline Arg::Arg(void* p) : arg_(p), parser_(parse_null) { }
inline bool Arg::Parse(const char* str, int n) const {
return (*parser_)(str, n, arg_);
}
// This part of the parser, appropriate only for ints, deals with bases
#define MAKE_INTEGER_PARSER(type, name) \
inline Arg Hex(type* ptr) { \
return Arg(ptr, Arg::parse_ ## name ## _hex); } \
inline Arg Octal(type* ptr) { \
return Arg(ptr, Arg::parse_ ## name ## _octal); } \
inline Arg CRadix(type* ptr) { \
return Arg(ptr, Arg::parse_ ## name ## _cradix); }
MAKE_INTEGER_PARSER(short, short) /* */
MAKE_INTEGER_PARSER(unsigned short, ushort) /* */
MAKE_INTEGER_PARSER(int, int) /* Don't use semicolons */
MAKE_INTEGER_PARSER(unsigned int, uint) /* after these statement */
MAKE_INTEGER_PARSER(long, long) /* because they can cause */
MAKE_INTEGER_PARSER(unsigned long, ulong) /* compiler warnings if */
#if 1 /* the checking level is */
MAKE_INTEGER_PARSER(long long, longlong) /* turned up high enough. */
#endif /* */
#if 1 /* */
MAKE_INTEGER_PARSER(unsigned long long, ulonglong) /* */
#endif
#undef PCRE_IS_SET
#undef PCRE_SET_OR_CLEAR
#undef MAKE_INTEGER_PARSER
} // namespace pcrecpp
#endif /* _PCRECPPARG_H */

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/*************************************************
* Perl-Compatible Regular Expressions *
*************************************************/
#ifndef _PCREPOSIX_H
#define _PCREPOSIX_H
/* This is the header for the POSIX wrapper interface to the PCRE Perl-
Compatible Regular Expression library. It defines the things POSIX says should
be there. I hope.
Copyright (c) 1997-2012 University of Cambridge
-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the University of Cambridge nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
-----------------------------------------------------------------------------
*/
/* Have to include stdlib.h in order to ensure that size_t is defined. */
#include <stdlib.h>
/* Allow for C++ users */
#ifdef __cplusplus
extern "C" {
#endif
/* Options, mostly defined by POSIX, but with some extras. */
#define REG_ICASE 0x0001 /* Maps to PCRE_CASELESS */
#define REG_NEWLINE 0x0002 /* Maps to PCRE_MULTILINE */
#define REG_NOTBOL 0x0004 /* Maps to PCRE_NOTBOL */
#define REG_NOTEOL 0x0008 /* Maps to PCRE_NOTEOL */
#define REG_DOTALL 0x0010 /* NOT defined by POSIX; maps to PCRE_DOTALL */
#define REG_NOSUB 0x0020 /* Maps to PCRE_NO_AUTO_CAPTURE */
#define REG_UTF8 0x0040 /* NOT defined by POSIX; maps to PCRE_UTF8 */
#define REG_STARTEND 0x0080 /* BSD feature: pass subject string by so,eo */
#define REG_NOTEMPTY 0x0100 /* NOT defined by POSIX; maps to PCRE_NOTEMPTY */
#define REG_UNGREEDY 0x0200 /* NOT defined by POSIX; maps to PCRE_UNGREEDY */
#define REG_UCP 0x0400 /* NOT defined by POSIX; maps to PCRE_UCP */
/* This is not used by PCRE, but by defining it we make it easier
to slot PCRE into existing programs that make POSIX calls. */
#define REG_EXTENDED 0
/* Error values. Not all these are relevant or used by the wrapper. */
enum {
REG_ASSERT = 1, /* internal error ? */
REG_BADBR, /* invalid repeat counts in {} */
REG_BADPAT, /* pattern error */
REG_BADRPT, /* ? * + invalid */
REG_EBRACE, /* unbalanced {} */
REG_EBRACK, /* unbalanced [] */
REG_ECOLLATE, /* collation error - not relevant */
REG_ECTYPE, /* bad class */
REG_EESCAPE, /* bad escape sequence */
REG_EMPTY, /* empty expression */
REG_EPAREN, /* unbalanced () */
REG_ERANGE, /* bad range inside [] */
REG_ESIZE, /* expression too big */
REG_ESPACE, /* failed to get memory */
REG_ESUBREG, /* bad back reference */
REG_INVARG, /* bad argument */
REG_NOMATCH /* match failed */
};
/* The structure representing a compiled regular expression. */
typedef struct {
void *re_pcre;
size_t re_nsub;
size_t re_erroffset;
} regex_t;
/* The structure in which a captured offset is returned. */
typedef int regoff_t;
typedef struct {
regoff_t rm_so;
regoff_t rm_eo;
} regmatch_t;
/* When an application links to a PCRE DLL in Windows, the symbols that are
imported have to be identified as such. When building PCRE, the appropriate
export settings are needed, and are set in pcreposix.c before including this
file. */
#if defined(_WIN32) && !defined(PCRE_STATIC) && !defined(PCREPOSIX_EXP_DECL)
# define PCREPOSIX_EXP_DECL extern __declspec(dllimport)
# define PCREPOSIX_EXP_DEFN __declspec(dllimport)
#endif
/* By default, we use the standard "extern" declarations. */
#ifndef PCREPOSIX_EXP_DECL
# ifdef __cplusplus
# define PCREPOSIX_EXP_DECL extern "C"
# define PCREPOSIX_EXP_DEFN extern "C"
# else
# define PCREPOSIX_EXP_DECL extern
# define PCREPOSIX_EXP_DEFN extern
# endif
#endif
/* The functions */
PCREPOSIX_EXP_DECL int regcomp(regex_t *, const char *, int);
PCREPOSIX_EXP_DECL int regexec(const regex_t *, const char *, size_t,
regmatch_t *, int);
PCREPOSIX_EXP_DECL size_t regerror(int, const regex_t *, char *, size_t);
PCREPOSIX_EXP_DECL void regfree(regex_t *);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* End of pcreposix.h */

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# Please DO NOT delete this file!
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/**
* \file api/lzma.h
* \brief The public API of liblzma data compression library
*
* liblzma is a public domain general-purpose data compression library with
* a zlib-like API. The native file format is .xz, but also the old .lzma
* format and raw (no headers) streams are supported. Multiple compression
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*
* liblzma is part of XZ Utils <http://tukaani.org/xz/>. XZ Utils includes
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*
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*
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*/
/*
* Author: Lasse Collin
*
* This file has been put into the public domain.
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*/
#ifndef LZMA_H
#define LZMA_H
/*****************************
* Required standard headers *
*****************************/
/*
* liblzma API headers need some standard types and macros. To allow
* including lzma.h without requiring the application to include other
* headers first, lzma.h includes the required standard headers unless
* they already seem to be included already or if LZMA_MANUAL_HEADERS
* has been defined.
*
* Here's what types and macros are needed and from which headers:
* - stddef.h: size_t, NULL
* - stdint.h: uint8_t, uint32_t, uint64_t, UINT32_C(n), uint64_C(n),
* UINT32_MAX, UINT64_MAX
*
* However, inttypes.h is a little more portable than stdint.h, although
* inttypes.h declares some unneeded things compared to plain stdint.h.
*
* The hacks below aren't perfect, specifically they assume that inttypes.h
* exists and that it typedefs at least uint8_t, uint32_t, and uint64_t,
* and that, in case of incomplete inttypes.h, unsigned int is 32-bit.
* If the application already takes care of setting up all the types and
* macros properly (for example by using gnulib's stdint.h or inttypes.h),
* we try to detect that the macros are already defined and don't include
* inttypes.h here again. However, you may define LZMA_MANUAL_HEADERS to
* force this file to never include any system headers.
*
* Some could argue that liblzma API should provide all the required types,
* for example lzma_uint64, LZMA_UINT64_C(n), and LZMA_UINT64_MAX. This was
* seen as an unnecessary mess, since most systems already provide all the
* necessary types and macros in the standard headers.
*
* Note that liblzma API still has lzma_bool, because using stdbool.h would
* break C89 and C++ programs on many systems. sizeof(bool) in C99 isn't
* necessarily the same as sizeof(bool) in C++.
*/
#ifndef LZMA_MANUAL_HEADERS
/*
* I suppose this works portably also in C++. Note that in C++,
* we need to get size_t into the global namespace.
*/
# include <stddef.h>
/*
* Skip inttypes.h if we already have all the required macros. If we
* have the macros, we assume that we have the matching typedefs too.
*/
# if !defined(UINT32_C) || !defined(UINT64_C) \
|| !defined(UINT32_MAX) || !defined(UINT64_MAX)
/*
* MSVC versions older than 2013 have no C99 support, and
* thus they cannot be used to compile liblzma. Using an
* existing liblzma.dll with old MSVC can work though(*),
* but we need to define the required standard integer
* types here in a MSVC-specific way.
*
* (*) If you do this, the existing liblzma.dll probably uses
* a different runtime library than your MSVC-built
* application. Mixing runtimes is generally bad, but
* in this case it should work as long as you avoid
* the few rarely-needed liblzma functions that allocate
* memory and expect the caller to free it using free().
*/
# if defined(_WIN32) && defined(_MSC_VER) && _MSC_VER < 1800
typedef unsigned __int8 uint8_t;
typedef unsigned __int32 uint32_t;
typedef unsigned __int64 uint64_t;
# else
/* Use the standard inttypes.h. */
# ifdef __cplusplus
/*
* C99 sections 7.18.2 and 7.18.4 specify
* that C++ implementations define the limit
* and constant macros only if specifically
* requested. Note that if you want the
* format macros (PRIu64 etc.) too, you need
* to define __STDC_FORMAT_MACROS before
* including lzma.h, since re-including
* inttypes.h with __STDC_FORMAT_MACROS
* defined doesn't necessarily work.
*/
# ifndef __STDC_LIMIT_MACROS
# define __STDC_LIMIT_MACROS 1
# endif
# ifndef __STDC_CONSTANT_MACROS
# define __STDC_CONSTANT_MACROS 1
# endif
# endif
# include <inttypes.h>
# endif
/*
* Some old systems have only the typedefs in inttypes.h, and
* lack all the macros. For those systems, we need a few more
* hacks. We assume that unsigned int is 32-bit and unsigned
* long is either 32-bit or 64-bit. If these hacks aren't
* enough, the application has to setup the types manually
* before including lzma.h.
*/
# ifndef UINT32_C
# if defined(_WIN32) && defined(_MSC_VER)
# define UINT32_C(n) n ## UI32
# else
# define UINT32_C(n) n ## U
# endif
# endif
# ifndef UINT64_C
# if defined(_WIN32) && defined(_MSC_VER)
# define UINT64_C(n) n ## UI64
# else
/* Get ULONG_MAX. */
# include <limits.h>
# if ULONG_MAX == 4294967295UL
# define UINT64_C(n) n ## ULL
# else
# define UINT64_C(n) n ## UL
# endif
# endif
# endif
# ifndef UINT32_MAX
# define UINT32_MAX (UINT32_C(4294967295))
# endif
# ifndef UINT64_MAX
# define UINT64_MAX (UINT64_C(18446744073709551615))
# endif
# endif
#endif /* ifdef LZMA_MANUAL_HEADERS */
/******************
* LZMA_API macro *
******************/
/*
* Some systems require that the functions and function pointers are
* declared specially in the headers. LZMA_API_IMPORT is for importing
* symbols and LZMA_API_CALL is to specify the calling convention.
*
* By default it is assumed that the application will link dynamically
* against liblzma. #define LZMA_API_STATIC in your application if you
* want to link against static liblzma. If you don't care about portability
* to operating systems like Windows, or at least don't care about linking
* against static liblzma on them, don't worry about LZMA_API_STATIC. That
* is, most developers will never need to use LZMA_API_STATIC.
*
* The GCC variants are a special case on Windows (Cygwin and MinGW).
* We rely on GCC doing the right thing with its auto-import feature,
* and thus don't use __declspec(dllimport). This way developers don't
* need to worry about LZMA_API_STATIC. Also the calling convention is
* omitted on Cygwin but not on MinGW.
*/
#ifndef LZMA_API_IMPORT
# if !defined(LZMA_API_STATIC) && defined(_WIN32) && !defined(__GNUC__)
# define LZMA_API_IMPORT __declspec(dllimport)
# else
# define LZMA_API_IMPORT
# endif
#endif
#ifndef LZMA_API_CALL
# if defined(_WIN32) && !defined(__CYGWIN__)
# define LZMA_API_CALL __cdecl
# else
# define LZMA_API_CALL
# endif
#endif
#ifndef LZMA_API
# define LZMA_API(type) LZMA_API_IMPORT type LZMA_API_CALL
#endif
/***********
* nothrow *
***********/
/*
* None of the functions in liblzma may throw an exception. Even
* the functions that use callback functions won't throw exceptions,
* because liblzma would break if a callback function threw an exception.
*/
#ifndef lzma_nothrow
# if defined(__cplusplus)
# if __cplusplus >= 201103L
# define lzma_nothrow noexcept
# else
# define lzma_nothrow throw()
# endif
# elif __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3)
# define lzma_nothrow __attribute__((__nothrow__))
# else
# define lzma_nothrow
# endif
#endif
/********************
* GNU C extensions *
********************/
/*
* GNU C extensions are used conditionally in the public API. It doesn't
* break anything if these are sometimes enabled and sometimes not, only
* affects warnings and optimizations.
*/
#if __GNUC__ >= 3
# ifndef lzma_attribute
# define lzma_attribute(attr) __attribute__(attr)
# endif
/* warn_unused_result was added in GCC 3.4. */
# ifndef lzma_attr_warn_unused_result
# if __GNUC__ == 3 && __GNUC_MINOR__ < 4
# define lzma_attr_warn_unused_result
# endif
# endif
#else
# ifndef lzma_attribute
# define lzma_attribute(attr)
# endif
#endif
#ifndef lzma_attr_pure
# define lzma_attr_pure lzma_attribute((__pure__))
#endif
#ifndef lzma_attr_const
# define lzma_attr_const lzma_attribute((__const__))
#endif
#ifndef lzma_attr_warn_unused_result
# define lzma_attr_warn_unused_result \
lzma_attribute((__warn_unused_result__))
#endif
/**************
* Subheaders *
**************/
#ifdef __cplusplus
extern "C" {
#endif
/*
* Subheaders check that this is defined. It is to prevent including
* them directly from applications.
*/
#define LZMA_H_INTERNAL 1
/* Basic features */
#include "lzma/version.h"
#include "lzma/base.h"
#include "lzma/vli.h"
#include "lzma/check.h"
/* Filters */
#include "lzma/filter.h"
#include "lzma/bcj.h"
#include "lzma/delta.h"
#include "lzma/lzma12.h"
/* Container formats */
#include "lzma/container.h"
/* Advanced features */
#include "lzma/stream_flags.h"
#include "lzma/block.h"
#include "lzma/index.h"
#include "lzma/index_hash.h"
/* Hardware information */
#include "lzma/hardware.h"
/*
* All subheaders included. Undefine LZMA_H_INTERNAL to prevent applications
* re-including the subheaders.
*/
#undef LZMA_H_INTERNAL
#ifdef __cplusplus
}
#endif
#endif /* ifndef LZMA_H */

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/**
* \file lzma/base.h
* \brief Data types and functions used in many places in liblzma API
*/
/*
* Author: Lasse Collin
*
* This file has been put into the public domain.
* You can do whatever you want with this file.
*
* See ../lzma.h for information about liblzma as a whole.
*/
#ifndef LZMA_H_INTERNAL
# error Never include this file directly. Use <lzma.h> instead.
#endif
/**
* \brief Boolean
*
* This is here because C89 doesn't have stdbool.h. To set a value for
* variables having type lzma_bool, you can use
* - C99's `true' and `false' from stdbool.h;
* - C++'s internal `true' and `false'; or
* - integers one (true) and zero (false).
*/
typedef unsigned char lzma_bool;
/**
* \brief Type of reserved enumeration variable in structures
*
* To avoid breaking library ABI when new features are added, several
* structures contain extra variables that may be used in future. Since
* sizeof(enum) can be different than sizeof(int), and sizeof(enum) may
* even vary depending on the range of enumeration constants, we specify
* a separate type to be used for reserved enumeration variables. All
* enumeration constants in liblzma API will be non-negative and less
* than 128, which should guarantee that the ABI won't break even when
* new constants are added to existing enumerations.
*/
typedef enum {
LZMA_RESERVED_ENUM = 0
} lzma_reserved_enum;
/**
* \brief Return values used by several functions in liblzma
*
* Check the descriptions of specific functions to find out which return
* values they can return. With some functions the return values may have
* more specific meanings than described here; those differences are
* described per-function basis.
*/
typedef enum {
LZMA_OK = 0,
/**<
* \brief Operation completed successfully
*/
LZMA_STREAM_END = 1,
/**<
* \brief End of stream was reached
*
* In encoder, LZMA_SYNC_FLUSH, LZMA_FULL_FLUSH, or
* LZMA_FINISH was finished. In decoder, this indicates
* that all the data was successfully decoded.
*
* In all cases, when LZMA_STREAM_END is returned, the last
* output bytes should be picked from strm->next_out.
*/
LZMA_NO_CHECK = 2,
/**<
* \brief Input stream has no integrity check
*
* This return value can be returned only if the
* LZMA_TELL_NO_CHECK flag was used when initializing
* the decoder. LZMA_NO_CHECK is just a warning, and
* the decoding can be continued normally.
*
* It is possible to call lzma_get_check() immediately after
* lzma_code has returned LZMA_NO_CHECK. The result will
* naturally be LZMA_CHECK_NONE, but the possibility to call
* lzma_get_check() may be convenient in some applications.
*/
LZMA_UNSUPPORTED_CHECK = 3,
/**<
* \brief Cannot calculate the integrity check
*
* The usage of this return value is different in encoders
* and decoders.
*
* Encoders can return this value only from the initialization
* function. If initialization fails with this value, the
* encoding cannot be done, because there's no way to produce
* output with the correct integrity check.
*
* Decoders can return this value only from lzma_code() and
* only if the LZMA_TELL_UNSUPPORTED_CHECK flag was used when
* initializing the decoder. The decoding can still be
* continued normally even if the check type is unsupported,
* but naturally the check will not be validated, and possible
* errors may go undetected.
*
* With decoder, it is possible to call lzma_get_check()
* immediately after lzma_code() has returned
* LZMA_UNSUPPORTED_CHECK. This way it is possible to find
* out what the unsupported Check ID was.
*/
LZMA_GET_CHECK = 4,
/**<
* \brief Integrity check type is now available
*
* This value can be returned only by the lzma_code() function
* and only if the decoder was initialized with the
* LZMA_TELL_ANY_CHECK flag. LZMA_GET_CHECK tells the
* application that it may now call lzma_get_check() to find
* out the Check ID. This can be used, for example, to
* implement a decoder that accepts only files that have
* strong enough integrity check.
*/
LZMA_MEM_ERROR = 5,
/**<
* \brief Cannot allocate memory
*
* Memory allocation failed, or the size of the allocation
* would be greater than SIZE_MAX.
*
* Due to internal implementation reasons, the coding cannot
* be continued even if more memory were made available after
* LZMA_MEM_ERROR.
*/
LZMA_MEMLIMIT_ERROR = 6,
/**
* \brief Memory usage limit was reached
*
* Decoder would need more memory than allowed by the
* specified memory usage limit. To continue decoding,
* the memory usage limit has to be increased with
* lzma_memlimit_set().
*/
LZMA_FORMAT_ERROR = 7,
/**<
* \brief File format not recognized
*
* The decoder did not recognize the input as supported file
* format. This error can occur, for example, when trying to
* decode .lzma format file with lzma_stream_decoder,
* because lzma_stream_decoder accepts only the .xz format.
*/
LZMA_OPTIONS_ERROR = 8,
/**<
* \brief Invalid or unsupported options
*
* Invalid or unsupported options, for example
* - unsupported filter(s) or filter options; or
* - reserved bits set in headers (decoder only).
*
* Rebuilding liblzma with more features enabled, or
* upgrading to a newer version of liblzma may help.
*/
LZMA_DATA_ERROR = 9,
/**<
* \brief Data is corrupt
*
* The usage of this return value is different in encoders
* and decoders. In both encoder and decoder, the coding
* cannot continue after this error.
*
* Encoders return this if size limits of the target file
* format would be exceeded. These limits are huge, thus
* getting this error from an encoder is mostly theoretical.
* For example, the maximum compressed and uncompressed
* size of a .xz Stream is roughly 8 EiB (2^63 bytes).
*
* Decoders return this error if the input data is corrupt.
* This can mean, for example, invalid CRC32 in headers
* or invalid check of uncompressed data.
*/
LZMA_BUF_ERROR = 10,
/**<
* \brief No progress is possible
*
* This error code is returned when the coder cannot consume
* any new input and produce any new output. The most common
* reason for this error is that the input stream being
* decoded is truncated or corrupt.
*
* This error is not fatal. Coding can be continued normally
* by providing more input and/or more output space, if
* possible.
*
* Typically the first call to lzma_code() that can do no
* progress returns LZMA_OK instead of LZMA_BUF_ERROR. Only
* the second consecutive call doing no progress will return
* LZMA_BUF_ERROR. This is intentional.
*
* With zlib, Z_BUF_ERROR may be returned even if the
* application is doing nothing wrong, so apps will need
* to handle Z_BUF_ERROR specially. The above hack
* guarantees that liblzma never returns LZMA_BUF_ERROR
* to properly written applications unless the input file
* is truncated or corrupt. This should simplify the
* applications a little.
*/
LZMA_PROG_ERROR = 11,
/**<
* \brief Programming error
*
* This indicates that the arguments given to the function are
* invalid or the internal state of the decoder is corrupt.
* - Function arguments are invalid or the structures
* pointed by the argument pointers are invalid
* e.g. if strm->next_out has been set to NULL and
* strm->avail_out > 0 when calling lzma_code().
* - lzma_* functions have been called in wrong order
* e.g. lzma_code() was called right after lzma_end().
* - If errors occur randomly, the reason might be flaky
* hardware.
*
* If you think that your code is correct, this error code
* can be a sign of a bug in liblzma. See the documentation
* how to report bugs.
*/
} lzma_ret;
/**
* \brief The `action' argument for lzma_code()
*
* After the first use of LZMA_SYNC_FLUSH, LZMA_FULL_FLUSH, LZMA_FULL_BARRIER,
* or LZMA_FINISH, the same `action' must is used until lzma_code() returns
* LZMA_STREAM_END. Also, the amount of input (that is, strm->avail_in) must
* not be modified by the application until lzma_code() returns
* LZMA_STREAM_END. Changing the `action' or modifying the amount of input
* will make lzma_code() return LZMA_PROG_ERROR.
*/
typedef enum {
LZMA_RUN = 0,
/**<
* \brief Continue coding
*
* Encoder: Encode as much input as possible. Some internal
* buffering will probably be done (depends on the filter
* chain in use), which causes latency: the input used won't
* usually be decodeable from the output of the same
* lzma_code() call.
*
* Decoder: Decode as much input as possible and produce as
* much output as possible.
*/
LZMA_SYNC_FLUSH = 1,
/**<
* \brief Make all the input available at output
*
* Normally the encoder introduces some latency.
* LZMA_SYNC_FLUSH forces all the buffered data to be
* available at output without resetting the internal
* state of the encoder. This way it is possible to use
* compressed stream for example for communication over
* network.
*
* Only some filters support LZMA_SYNC_FLUSH. Trying to use
* LZMA_SYNC_FLUSH with filters that don't support it will
* make lzma_code() return LZMA_OPTIONS_ERROR. For example,
* LZMA1 doesn't support LZMA_SYNC_FLUSH but LZMA2 does.
*
* Using LZMA_SYNC_FLUSH very often can dramatically reduce
* the compression ratio. With some filters (for example,
* LZMA2), fine-tuning the compression options may help
* mitigate this problem significantly (for example,
* match finder with LZMA2).
*
* Decoders don't support LZMA_SYNC_FLUSH.
*/
LZMA_FULL_FLUSH = 2,
/**<
* \brief Finish encoding of the current Block
*
* All the input data going to the current Block must have
* been given to the encoder (the last bytes can still be
* pending in *next_in). Call lzma_code() with LZMA_FULL_FLUSH
* until it returns LZMA_STREAM_END. Then continue normally
* with LZMA_RUN or finish the Stream with LZMA_FINISH.
*
* This action is currently supported only by Stream encoder
* and easy encoder (which uses Stream encoder). If there is
* no unfinished Block, no empty Block is created.
*/
LZMA_FULL_BARRIER = 4,
/**<
* \brief Finish encoding of the current Block
*
* This is like LZMA_FULL_FLUSH except that this doesn't
* necessarily wait until all the input has been made
* available via the output buffer. That is, lzma_code()
* might return LZMA_STREAM_END as soon as all the input
* has been consumed (avail_in == 0).
*
* LZMA_FULL_BARRIER is useful with a threaded encoder if
* one wants to split the .xz Stream into Blocks at specific
* offsets but doesn't care if the output isn't flushed
* immediately. Using LZMA_FULL_BARRIER allows keeping
* the threads busy while LZMA_FULL_FLUSH would make
* lzma_code() wait until all the threads have finished
* until more data could be passed to the encoder.
*
* With a lzma_stream initialized with the single-threaded
* lzma_stream_encoder() or lzma_easy_encoder(),
* LZMA_FULL_BARRIER is an alias for LZMA_FULL_FLUSH.
*/
LZMA_FINISH = 3
/**<
* \brief Finish the coding operation
*
* All the input data must have been given to the encoder
* (the last bytes can still be pending in next_in).
* Call lzma_code() with LZMA_FINISH until it returns
* LZMA_STREAM_END. Once LZMA_FINISH has been used,
* the amount of input must no longer be changed by
* the application.
*
* When decoding, using LZMA_FINISH is optional unless the
* LZMA_CONCATENATED flag was used when the decoder was
* initialized. When LZMA_CONCATENATED was not used, the only
* effect of LZMA_FINISH is that the amount of input must not
* be changed just like in the encoder.
*/
} lzma_action;
/**
* \brief Custom functions for memory handling
*
* A pointer to lzma_allocator may be passed via lzma_stream structure
* to liblzma, and some advanced functions take a pointer to lzma_allocator
* as a separate function argument. The library will use the functions
* specified in lzma_allocator for memory handling instead of the default
* malloc() and free(). C++ users should note that the custom memory
* handling functions must not throw exceptions.
*
* Single-threaded mode only: liblzma doesn't make an internal copy of
* lzma_allocator. Thus, it is OK to change these function pointers in
* the middle of the coding process, but obviously it must be done
* carefully to make sure that the replacement `free' can deallocate
* memory allocated by the earlier `alloc' function(s).
*
* Multithreaded mode: liblzma might internally store pointers to the
* lzma_allocator given via the lzma_stream structure. The application
* must not change the allocator pointer in lzma_stream or the contents
* of the pointed lzma_allocator structure until lzma_end() has been used
* to free the memory associated with that lzma_stream. The allocation
* functions might be called simultaneously from multiple threads, and
* thus they must be thread safe.
*/
typedef struct {
/**
* \brief Pointer to a custom memory allocation function
*
* If you don't want a custom allocator, but still want
* custom free(), set this to NULL and liblzma will use
* the standard malloc().
*
* \param opaque lzma_allocator.opaque (see below)
* \param nmemb Number of elements like in calloc(). liblzma
* will always set nmemb to 1, so it is safe to
* ignore nmemb in a custom allocator if you like.
* The nmemb argument exists only for
* compatibility with zlib and libbzip2.
* \param size Size of an element in bytes.
* liblzma never sets this to zero.
*
* \return Pointer to the beginning of a memory block of
* `size' bytes, or NULL if allocation fails
* for some reason. When allocation fails, functions
* of liblzma return LZMA_MEM_ERROR.
*
* The allocator should not waste time zeroing the allocated buffers.
* This is not only about speed, but also memory usage, since the
* operating system kernel doesn't necessarily allocate the requested
* memory in physical memory until it is actually used. With small
* input files, liblzma may actually need only a fraction of the
* memory that it requested for allocation.
*
* \note LZMA_MEM_ERROR is also used when the size of the
* allocation would be greater than SIZE_MAX. Thus,
* don't assume that the custom allocator must have
* returned NULL if some function from liblzma
* returns LZMA_MEM_ERROR.
*/
void *(LZMA_API_CALL *alloc)(void *opaque, size_t nmemb, size_t size);
/**
* \brief Pointer to a custom memory freeing function
*
* If you don't want a custom freeing function, but still
* want a custom allocator, set this to NULL and liblzma
* will use the standard free().
*
* \param opaque lzma_allocator.opaque (see below)
* \param ptr Pointer returned by lzma_allocator.alloc(),
* or when it is set to NULL, a pointer returned
* by the standard malloc().
*/
void (LZMA_API_CALL *free)(void *opaque, void *ptr);
/**
* \brief Pointer passed to .alloc() and .free()
*
* opaque is passed as the first argument to lzma_allocator.alloc()
* and lzma_allocator.free(). This intended to ease implementing
* custom memory allocation functions for use with liblzma.
*
* If you don't need this, you should set this to NULL.
*/
void *opaque;
} lzma_allocator;
/**
* \brief Internal data structure
*
* The contents of this structure is not visible outside the library.
*/
typedef struct lzma_internal_s lzma_internal;
/**
* \brief Passing data to and from liblzma
*
* The lzma_stream structure is used for
* - passing pointers to input and output buffers to liblzma;
* - defining custom memory hander functions; and
* - holding a pointer to coder-specific internal data structures.
*
* Typical usage:
*
* - After allocating lzma_stream (on stack or with malloc()), it must be
* initialized to LZMA_STREAM_INIT (see LZMA_STREAM_INIT for details).
*
* - Initialize a coder to the lzma_stream, for example by using
* lzma_easy_encoder() or lzma_auto_decoder(). Some notes:
* - In contrast to zlib, strm->next_in and strm->next_out are
* ignored by all initialization functions, thus it is safe
* to not initialize them yet.
* - The initialization functions always set strm->total_in and
* strm->total_out to zero.
* - If the initialization function fails, no memory is left allocated
* that would require freeing with lzma_end() even if some memory was
* associated with the lzma_stream structure when the initialization
* function was called.
*
* - Use lzma_code() to do the actual work.
*
* - Once the coding has been finished, the existing lzma_stream can be
* reused. It is OK to reuse lzma_stream with different initialization
* function without calling lzma_end() first. Old allocations are
* automatically freed.
*
* - Finally, use lzma_end() to free the allocated memory. lzma_end() never
* frees the lzma_stream structure itself.
*
* Application may modify the values of total_in and total_out as it wants.
* They are updated by liblzma to match the amount of data read and
* written but aren't used for anything else except as a possible return
* values from lzma_get_progress().
*/
typedef struct {
const uint8_t *next_in; /**< Pointer to the next input byte. */
size_t avail_in; /**< Number of available input bytes in next_in. */
uint64_t total_in; /**< Total number of bytes read by liblzma. */
uint8_t *next_out; /**< Pointer to the next output position. */
size_t avail_out; /**< Amount of free space in next_out. */
uint64_t total_out; /**< Total number of bytes written by liblzma. */
/**
* \brief Custom memory allocation functions
*
* In most cases this is NULL which makes liblzma use
* the standard malloc() and free().
*
* \note In 5.0.x this is not a const pointer.
*/
const lzma_allocator *allocator;
/** Internal state is not visible to applications. */
lzma_internal *internal;
/*
* Reserved space to allow possible future extensions without
* breaking the ABI. Excluding the initialization of this structure,
* you should not touch these, because the names of these variables
* may change.
*/
void *reserved_ptr1;
void *reserved_ptr2;
void *reserved_ptr3;
void *reserved_ptr4;
uint64_t reserved_int1;
uint64_t reserved_int2;
size_t reserved_int3;
size_t reserved_int4;
lzma_reserved_enum reserved_enum1;
lzma_reserved_enum reserved_enum2;
} lzma_stream;
/**
* \brief Initialization for lzma_stream
*
* When you declare an instance of lzma_stream, you can immediately
* initialize it so that initialization functions know that no memory
* has been allocated yet:
*
* lzma_stream strm = LZMA_STREAM_INIT;
*
* If you need to initialize a dynamically allocated lzma_stream, you can use
* memset(strm_pointer, 0, sizeof(lzma_stream)). Strictly speaking, this
* violates the C standard since NULL may have different internal
* representation than zero, but it should be portable enough in practice.
* Anyway, for maximum portability, you can use something like this:
*
* lzma_stream tmp = LZMA_STREAM_INIT;
* *strm = tmp;
*/
#define LZMA_STREAM_INIT \
{ NULL, 0, 0, NULL, 0, 0, NULL, NULL, \
NULL, NULL, NULL, NULL, 0, 0, 0, 0, \
LZMA_RESERVED_ENUM, LZMA_RESERVED_ENUM }
/**
* \brief Encode or decode data
*
* Once the lzma_stream has been successfully initialized (e.g. with
* lzma_stream_encoder()), the actual encoding or decoding is done
* using this function. The application has to update strm->next_in,
* strm->avail_in, strm->next_out, and strm->avail_out to pass input
* to and get output from liblzma.
*
* See the description of the coder-specific initialization function to find
* out what `action' values are supported by the coder.
*/
extern LZMA_API(lzma_ret) lzma_code(lzma_stream *strm, lzma_action action)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Free memory allocated for the coder data structures
*
* \param strm Pointer to lzma_stream that is at least initialized
* with LZMA_STREAM_INIT.
*
* After lzma_end(strm), strm->internal is guaranteed to be NULL. No other
* members of the lzma_stream structure are touched.
*
* \note zlib indicates an error if application end()s unfinished
* stream structure. liblzma doesn't do this, and assumes that
* application knows what it is doing.
*/
extern LZMA_API(void) lzma_end(lzma_stream *strm) lzma_nothrow;
/**
* \brief Get progress information
*
* In single-threaded mode, applications can get progress information from
* strm->total_in and strm->total_out. In multi-threaded mode this is less
* useful because a significant amount of both input and output data gets
* buffered internally by liblzma. This makes total_in and total_out give
* misleading information and also makes the progress indicator updates
* non-smooth.
*
* This function gives realistic progress information also in multi-threaded
* mode by taking into account the progress made by each thread. In
* single-threaded mode *progress_in and *progress_out are set to
* strm->total_in and strm->total_out, respectively.
*/
extern LZMA_API(void) lzma_get_progress(lzma_stream *strm,
uint64_t *progress_in, uint64_t *progress_out) lzma_nothrow;
/**
* \brief Get the memory usage of decoder filter chain
*
* This function is currently supported only when *strm has been initialized
* with a function that takes a memlimit argument. With other functions, you
* should use e.g. lzma_raw_encoder_memusage() or lzma_raw_decoder_memusage()
* to estimate the memory requirements.
*
* This function is useful e.g. after LZMA_MEMLIMIT_ERROR to find out how big
* the memory usage limit should have been to decode the input. Note that
* this may give misleading information if decoding .xz Streams that have
* multiple Blocks, because each Block can have different memory requirements.
*
* \return How much memory is currently allocated for the filter
* decoders. If no filter chain is currently allocated,
* some non-zero value is still returned, which is less than
* or equal to what any filter chain would indicate as its
* memory requirement.
*
* If this function isn't supported by *strm or some other error
* occurs, zero is returned.
*/
extern LZMA_API(uint64_t) lzma_memusage(const lzma_stream *strm)
lzma_nothrow lzma_attr_pure;
/**
* \brief Get the current memory usage limit
*
* This function is supported only when *strm has been initialized with
* a function that takes a memlimit argument.
*
* \return On success, the current memory usage limit is returned
* (always non-zero). On error, zero is returned.
*/
extern LZMA_API(uint64_t) lzma_memlimit_get(const lzma_stream *strm)
lzma_nothrow lzma_attr_pure;
/**
* \brief Set the memory usage limit
*
* This function is supported only when *strm has been initialized with
* a function that takes a memlimit argument.
*
* liblzma 5.2.3 and earlier has a bug where memlimit value of 0 causes
* this function to do nothing (leaving the limit unchanged) and still
* return LZMA_OK. Later versions treat 0 as if 1 had been specified (so
* lzma_memlimit_get() will return 1 even if you specify 0 here).
*
* \return - LZMA_OK: New memory usage limit successfully set.
* - LZMA_MEMLIMIT_ERROR: The new limit is too small.
* The limit was not changed.
* - LZMA_PROG_ERROR: Invalid arguments, e.g. *strm doesn't
* support memory usage limit.
*/
extern LZMA_API(lzma_ret) lzma_memlimit_set(
lzma_stream *strm, uint64_t memlimit) lzma_nothrow;

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/**
* \file lzma/bcj.h
* \brief Branch/Call/Jump conversion filters
*/
/*
* Author: Lasse Collin
*
* This file has been put into the public domain.
* You can do whatever you want with this file.
*
* See ../lzma.h for information about liblzma as a whole.
*/
#ifndef LZMA_H_INTERNAL
# error Never include this file directly. Use <lzma.h> instead.
#endif
/* Filter IDs for lzma_filter.id */
#define LZMA_FILTER_X86 LZMA_VLI_C(0x04)
/**<
* Filter for x86 binaries
*/
#define LZMA_FILTER_POWERPC LZMA_VLI_C(0x05)
/**<
* Filter for Big endian PowerPC binaries
*/
#define LZMA_FILTER_IA64 LZMA_VLI_C(0x06)
/**<
* Filter for IA-64 (Itanium) binaries.
*/
#define LZMA_FILTER_ARM LZMA_VLI_C(0x07)
/**<
* Filter for ARM binaries.
*/
#define LZMA_FILTER_ARMTHUMB LZMA_VLI_C(0x08)
/**<
* Filter for ARM-Thumb binaries.
*/
#define LZMA_FILTER_SPARC LZMA_VLI_C(0x09)
/**<
* Filter for SPARC binaries.
*/
/**
* \brief Options for BCJ filters
*
* The BCJ filters never change the size of the data. Specifying options
* for them is optional: if pointer to options is NULL, default value is
* used. You probably never need to specify options to BCJ filters, so just
* set the options pointer to NULL and be happy.
*
* If options with non-default values have been specified when encoding,
* the same options must also be specified when decoding.
*
* \note At the moment, none of the BCJ filters support
* LZMA_SYNC_FLUSH. If LZMA_SYNC_FLUSH is specified,
* LZMA_OPTIONS_ERROR will be returned. If there is need,
* partial support for LZMA_SYNC_FLUSH can be added in future.
* Partial means that flushing would be possible only at
* offsets that are multiple of 2, 4, or 16 depending on
* the filter, except x86 which cannot be made to support
* LZMA_SYNC_FLUSH predictably.
*/
typedef struct {
/**
* \brief Start offset for conversions
*
* This setting is useful only when the same filter is used
* _separately_ for multiple sections of the same executable file,
* and the sections contain cross-section branch/call/jump
* instructions. In that case it is beneficial to set the start
* offset of the non-first sections so that the relative addresses
* of the cross-section branch/call/jump instructions will use the
* same absolute addresses as in the first section.
*
* When the pointer to options is NULL, the default value (zero)
* is used.
*/
uint32_t start_offset;
} lzma_options_bcj;

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/**
* \file lzma/block.h
* \brief .xz Block handling
*/
/*
* Author: Lasse Collin
*
* This file has been put into the public domain.
* You can do whatever you want with this file.
*
* See ../lzma.h for information about liblzma as a whole.
*/
#ifndef LZMA_H_INTERNAL
# error Never include this file directly. Use <lzma.h> instead.
#endif
/**
* \brief Options for the Block and Block Header encoders and decoders
*
* Different Block handling functions use different parts of this structure.
* Some read some members, other functions write, and some do both. Only the
* members listed for reading need to be initialized when the specified
* functions are called. The members marked for writing will be assigned
* new values at some point either by calling the given function or by
* later calls to lzma_code().
*/
typedef struct {
/**
* \brief Block format version
*
* To prevent API and ABI breakages when new features are needed,
* a version number is used to indicate which fields in this
* structure are in use:
* - liblzma >= 5.0.0: version = 0 is supported.
* - liblzma >= 5.1.4beta: Support for version = 1 was added,
* which adds the ignore_check field.
*
* If version is greater than one, most Block related functions
* will return LZMA_OPTIONS_ERROR (lzma_block_header_decode() works
* with any version value).
*
* Read by:
* - All functions that take pointer to lzma_block as argument,
* including lzma_block_header_decode().
*
* Written by:
* - lzma_block_header_decode()
*/
uint32_t version;
/**
* \brief Size of the Block Header field
*
* This is always a multiple of four.
*
* Read by:
* - lzma_block_header_encode()
* - lzma_block_header_decode()
* - lzma_block_compressed_size()
* - lzma_block_unpadded_size()
* - lzma_block_total_size()
* - lzma_block_decoder()
* - lzma_block_buffer_decode()
*
* Written by:
* - lzma_block_header_size()
* - lzma_block_buffer_encode()
*/
uint32_t header_size;
# define LZMA_BLOCK_HEADER_SIZE_MIN 8
# define LZMA_BLOCK_HEADER_SIZE_MAX 1024
/**
* \brief Type of integrity Check
*
* The Check ID is not stored into the Block Header, thus its value
* must be provided also when decoding.
*
* Read by:
* - lzma_block_header_encode()
* - lzma_block_header_decode()
* - lzma_block_compressed_size()
* - lzma_block_unpadded_size()
* - lzma_block_total_size()
* - lzma_block_encoder()
* - lzma_block_decoder()
* - lzma_block_buffer_encode()
* - lzma_block_buffer_decode()
*/
lzma_check check;
/**
* \brief Size of the Compressed Data in bytes
*
* Encoding: If this is not LZMA_VLI_UNKNOWN, Block Header encoder
* will store this value to the Block Header. Block encoder doesn't
* care about this value, but will set it once the encoding has been
* finished.
*
* Decoding: If this is not LZMA_VLI_UNKNOWN, Block decoder will
* verify that the size of the Compressed Data field matches
* compressed_size.
*
* Usually you don't know this value when encoding in streamed mode,
* and thus cannot write this field into the Block Header.
*
* In non-streamed mode you can reserve space for this field before
* encoding the actual Block. After encoding the data, finish the
* Block by encoding the Block Header. Steps in detail:
*
* - Set compressed_size to some big enough value. If you don't know
* better, use LZMA_VLI_MAX, but remember that bigger values take
* more space in Block Header.
*
* - Call lzma_block_header_size() to see how much space you need to
* reserve for the Block Header.
*
* - Encode the Block using lzma_block_encoder() and lzma_code().
* It sets compressed_size to the correct value.
*
* - Use lzma_block_header_encode() to encode the Block Header.
* Because space was reserved in the first step, you don't need
* to call lzma_block_header_size() anymore, because due to
* reserving, header_size has to be big enough. If it is "too big",
* lzma_block_header_encode() will add enough Header Padding to
* make Block Header to match the size specified by header_size.
*
* Read by:
* - lzma_block_header_size()
* - lzma_block_header_encode()
* - lzma_block_compressed_size()
* - lzma_block_unpadded_size()
* - lzma_block_total_size()
* - lzma_block_decoder()
* - lzma_block_buffer_decode()
*
* Written by:
* - lzma_block_header_decode()
* - lzma_block_compressed_size()
* - lzma_block_encoder()
* - lzma_block_decoder()
* - lzma_block_buffer_encode()
* - lzma_block_buffer_decode()
*/
lzma_vli compressed_size;
/**
* \brief Uncompressed Size in bytes
*
* This is handled very similarly to compressed_size above.
*
* uncompressed_size is needed by fewer functions than
* compressed_size. This is because uncompressed_size isn't
* needed to validate that Block stays within proper limits.
*
* Read by:
* - lzma_block_header_size()
* - lzma_block_header_encode()
* - lzma_block_decoder()
* - lzma_block_buffer_decode()
*
* Written by:
* - lzma_block_header_decode()
* - lzma_block_encoder()
* - lzma_block_decoder()
* - lzma_block_buffer_encode()
* - lzma_block_buffer_decode()
*/
lzma_vli uncompressed_size;
/**
* \brief Array of filters
*
* There can be 1-4 filters. The end of the array is marked with
* .id = LZMA_VLI_UNKNOWN.
*
* Read by:
* - lzma_block_header_size()
* - lzma_block_header_encode()
* - lzma_block_encoder()
* - lzma_block_decoder()
* - lzma_block_buffer_encode()
* - lzma_block_buffer_decode()
*
* Written by:
* - lzma_block_header_decode(): Note that this does NOT free()
* the old filter options structures. All unused filters[] will
* have .id == LZMA_VLI_UNKNOWN and .options == NULL. If
* decoding fails, all filters[] are guaranteed to be
* LZMA_VLI_UNKNOWN and NULL.
*
* \note Because of the array is terminated with
* .id = LZMA_VLI_UNKNOWN, the actual array must
* have LZMA_FILTERS_MAX + 1 members or the Block
* Header decoder will overflow the buffer.
*/
lzma_filter *filters;
/**
* \brief Raw value stored in the Check field
*
* After successful coding, the first lzma_check_size(check) bytes
* of this array contain the raw value stored in the Check field.
*
* Note that CRC32 and CRC64 are stored in little endian byte order.
* Take it into account if you display the Check values to the user.
*
* Written by:
* - lzma_block_encoder()
* - lzma_block_decoder()
* - lzma_block_buffer_encode()
* - lzma_block_buffer_decode()
*/
uint8_t raw_check[LZMA_CHECK_SIZE_MAX];
/*
* Reserved space to allow possible future extensions without
* breaking the ABI. You should not touch these, because the names
* of these variables may change. These are and will never be used
* with the currently supported options, so it is safe to leave these
* uninitialized.
*/
void *reserved_ptr1;
void *reserved_ptr2;
void *reserved_ptr3;
uint32_t reserved_int1;
uint32_t reserved_int2;
lzma_vli reserved_int3;
lzma_vli reserved_int4;
lzma_vli reserved_int5;
lzma_vli reserved_int6;
lzma_vli reserved_int7;
lzma_vli reserved_int8;
lzma_reserved_enum reserved_enum1;
lzma_reserved_enum reserved_enum2;
lzma_reserved_enum reserved_enum3;
lzma_reserved_enum reserved_enum4;
/**
* \brief A flag to Block decoder to not verify the Check field
*
* This field is supported by liblzma >= 5.1.4beta if .version >= 1.
*
* If this is set to true, the integrity check won't be calculated
* and verified. Unless you know what you are doing, you should
* leave this to false. (A reason to set this to true is when the
* file integrity is verified externally anyway and you want to
* speed up the decompression, which matters mostly when using
* SHA-256 as the integrity check.)
*
* If .version >= 1, read by:
* - lzma_block_decoder()
* - lzma_block_buffer_decode()
*
* Written by (.version is ignored):
* - lzma_block_header_decode() always sets this to false
*/
lzma_bool ignore_check;
lzma_bool reserved_bool2;
lzma_bool reserved_bool3;
lzma_bool reserved_bool4;
lzma_bool reserved_bool5;
lzma_bool reserved_bool6;
lzma_bool reserved_bool7;
lzma_bool reserved_bool8;
} lzma_block;
/**
* \brief Decode the Block Header Size field
*
* To decode Block Header using lzma_block_header_decode(), the size of the
* Block Header has to be known and stored into lzma_block.header_size.
* The size can be calculated from the first byte of a Block using this macro.
* Note that if the first byte is 0x00, it indicates beginning of Index; use
* this macro only when the byte is not 0x00.
*
* There is no encoding macro, because Block Header encoder is enough for that.
*/
#define lzma_block_header_size_decode(b) (((uint32_t)(b) + 1) * 4)
/**
* \brief Calculate Block Header Size
*
* Calculate the minimum size needed for the Block Header field using the
* settings specified in the lzma_block structure. Note that it is OK to
* increase the calculated header_size value as long as it is a multiple of
* four and doesn't exceed LZMA_BLOCK_HEADER_SIZE_MAX. Increasing header_size
* just means that lzma_block_header_encode() will add Header Padding.
*
* \return - LZMA_OK: Size calculated successfully and stored to
* block->header_size.
* - LZMA_OPTIONS_ERROR: Unsupported version, filters or
* filter options.
* - LZMA_PROG_ERROR: Invalid values like compressed_size == 0.
*
* \note This doesn't check that all the options are valid i.e. this
* may return LZMA_OK even if lzma_block_header_encode() or
* lzma_block_encoder() would fail. If you want to validate the
* filter chain, consider using lzma_memlimit_encoder() which as
* a side-effect validates the filter chain.
*/
extern LZMA_API(lzma_ret) lzma_block_header_size(lzma_block *block)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Encode Block Header
*
* The caller must have calculated the size of the Block Header already with
* lzma_block_header_size(). If a value larger than the one calculated by
* lzma_block_header_size() is used, the Block Header will be padded to the
* specified size.
*
* \param out Beginning of the output buffer. This must be
* at least block->header_size bytes.
* \param block Block options to be encoded.
*
* \return - LZMA_OK: Encoding was successful. block->header_size
* bytes were written to output buffer.
* - LZMA_OPTIONS_ERROR: Invalid or unsupported options.
* - LZMA_PROG_ERROR: Invalid arguments, for example
* block->header_size is invalid or block->filters is NULL.
*/
extern LZMA_API(lzma_ret) lzma_block_header_encode(
const lzma_block *block, uint8_t *out)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Decode Block Header
*
* block->version should (usually) be set to the highest value supported
* by the application. If the application sets block->version to a value
* higher than supported by the current liblzma version, this function will
* downgrade block->version to the highest value supported by it. Thus one
* should check the value of block->version after calling this function if
* block->version was set to a non-zero value and the application doesn't
* otherwise know that the liblzma version being used is new enough to
* support the specified block->version.
*
* The size of the Block Header must have already been decoded with
* lzma_block_header_size_decode() macro and stored to block->header_size.
*
* The integrity check type from Stream Header must have been stored
* to block->check.
*
* block->filters must have been allocated, but they don't need to be
* initialized (possible existing filter options are not freed).
*
* \param block Destination for Block options.
* \param allocator lzma_allocator for custom allocator functions.
* Set to NULL to use malloc() (and also free()
* if an error occurs).
* \param in Beginning of the input buffer. This must be
* at least block->header_size bytes.
*
* \return - LZMA_OK: Decoding was successful. block->header_size
* bytes were read from the input buffer.
* - LZMA_OPTIONS_ERROR: The Block Header specifies some
* unsupported options such as unsupported filters. This can
* happen also if block->version was set to a too low value
* compared to what would be required to properly represent
* the information stored in the Block Header.
* - LZMA_DATA_ERROR: Block Header is corrupt, for example,
* the CRC32 doesn't match.
* - LZMA_PROG_ERROR: Invalid arguments, for example
* block->header_size is invalid or block->filters is NULL.
*/
extern LZMA_API(lzma_ret) lzma_block_header_decode(lzma_block *block,
const lzma_allocator *allocator, const uint8_t *in)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Validate and set Compressed Size according to Unpadded Size
*
* Block Header stores Compressed Size, but Index has Unpadded Size. If the
* application has already parsed the Index and is now decoding Blocks,
* it can calculate Compressed Size from Unpadded Size. This function does
* exactly that with error checking:
*
* - Compressed Size calculated from Unpadded Size must be positive integer,
* that is, Unpadded Size must be big enough that after Block Header and
* Check fields there's still at least one byte for Compressed Size.
*
* - If Compressed Size was present in Block Header, the new value
* calculated from Unpadded Size is compared against the value
* from Block Header.
*
* \note This function must be called _after_ decoding the Block Header
* field so that it can properly validate Compressed Size if it
* was present in Block Header.
*
* \return - LZMA_OK: block->compressed_size was set successfully.
* - LZMA_DATA_ERROR: unpadded_size is too small compared to
* block->header_size and lzma_check_size(block->check).
* - LZMA_PROG_ERROR: Some values are invalid. For example,
* block->header_size must be a multiple of four and
* between 8 and 1024 inclusive.
*/
extern LZMA_API(lzma_ret) lzma_block_compressed_size(
lzma_block *block, lzma_vli unpadded_size)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Calculate Unpadded Size
*
* The Index field stores Unpadded Size and Uncompressed Size. The latter
* can be taken directly from the lzma_block structure after coding a Block,
* but Unpadded Size needs to be calculated from Block Header Size,
* Compressed Size, and size of the Check field. This is where this function
* is needed.
*
* \return Unpadded Size on success, or zero on error.
*/
extern LZMA_API(lzma_vli) lzma_block_unpadded_size(const lzma_block *block)
lzma_nothrow lzma_attr_pure;
/**
* \brief Calculate the total encoded size of a Block
*
* This is equivalent to lzma_block_unpadded_size() except that the returned
* value includes the size of the Block Padding field.
*
* \return On success, total encoded size of the Block. On error,
* zero is returned.
*/
extern LZMA_API(lzma_vli) lzma_block_total_size(const lzma_block *block)
lzma_nothrow lzma_attr_pure;
/**
* \brief Initialize .xz Block encoder
*
* Valid actions for lzma_code() are LZMA_RUN, LZMA_SYNC_FLUSH (only if the
* filter chain supports it), and LZMA_FINISH.
*
* \return - LZMA_OK: All good, continue with lzma_code().
* - LZMA_MEM_ERROR
* - LZMA_OPTIONS_ERROR
* - LZMA_UNSUPPORTED_CHECK: block->check specifies a Check ID
* that is not supported by this buid of liblzma. Initializing
* the encoder failed.
* - LZMA_PROG_ERROR
*/
extern LZMA_API(lzma_ret) lzma_block_encoder(
lzma_stream *strm, lzma_block *block)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Initialize .xz Block decoder
*
* Valid actions for lzma_code() are LZMA_RUN and LZMA_FINISH. Using
* LZMA_FINISH is not required. It is supported only for convenience.
*
* \return - LZMA_OK: All good, continue with lzma_code().
* - LZMA_UNSUPPORTED_CHECK: Initialization was successful, but
* the given Check ID is not supported, thus Check will be
* ignored.
* - LZMA_PROG_ERROR
* - LZMA_MEM_ERROR
*/
extern LZMA_API(lzma_ret) lzma_block_decoder(
lzma_stream *strm, lzma_block *block)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Calculate maximum output size for single-call Block encoding
*
* This is equivalent to lzma_stream_buffer_bound() but for .xz Blocks.
* See the documentation of lzma_stream_buffer_bound().
*/
extern LZMA_API(size_t) lzma_block_buffer_bound(size_t uncompressed_size)
lzma_nothrow;
/**
* \brief Single-call .xz Block encoder
*
* In contrast to the multi-call encoder initialized with
* lzma_block_encoder(), this function encodes also the Block Header. This
* is required to make it possible to write appropriate Block Header also
* in case the data isn't compressible, and different filter chain has to be
* used to encode the data in uncompressed form using uncompressed chunks
* of the LZMA2 filter.
*
* When the data isn't compressible, header_size, compressed_size, and
* uncompressed_size are set just like when the data was compressible, but
* it is possible that header_size is too small to hold the filter chain
* specified in block->filters, because that isn't necessarily the filter
* chain that was actually used to encode the data. lzma_block_unpadded_size()
* still works normally, because it doesn't read the filters array.
*
* \param block Block options: block->version, block->check,
* and block->filters must have been initialized.
* \param allocator lzma_allocator for custom allocator functions.
* Set to NULL to use malloc() and free().
* \param in Beginning of the input buffer
* \param in_size Size of the input buffer
* \param out Beginning of the output buffer
* \param out_pos The next byte will be written to out[*out_pos].
* *out_pos is updated only if encoding succeeds.
* \param out_size Size of the out buffer; the first byte into
* which no data is written to is out[out_size].
*
* \return - LZMA_OK: Encoding was successful.
* - LZMA_BUF_ERROR: Not enough output buffer space.
* - LZMA_UNSUPPORTED_CHECK
* - LZMA_OPTIONS_ERROR
* - LZMA_MEM_ERROR
* - LZMA_DATA_ERROR
* - LZMA_PROG_ERROR
*/
extern LZMA_API(lzma_ret) lzma_block_buffer_encode(
lzma_block *block, const lzma_allocator *allocator,
const uint8_t *in, size_t in_size,
uint8_t *out, size_t *out_pos, size_t out_size)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Single-call uncompressed .xz Block encoder
*
* This is like lzma_block_buffer_encode() except this doesn't try to
* compress the data and instead encodes the data using LZMA2 uncompressed
* chunks. The required output buffer size can be determined with
* lzma_block_buffer_bound().
*
* Since the data won't be compressed, this function ignores block->filters.
* This function doesn't take lzma_allocator because this function doesn't
* allocate any memory from the heap.
*/
extern LZMA_API(lzma_ret) lzma_block_uncomp_encode(lzma_block *block,
const uint8_t *in, size_t in_size,
uint8_t *out, size_t *out_pos, size_t out_size)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Single-call .xz Block decoder
*
* This is single-call equivalent of lzma_block_decoder(), and requires that
* the caller has already decoded Block Header and checked its memory usage.
*
* \param block Block options just like with lzma_block_decoder().
* \param allocator lzma_allocator for custom allocator functions.
* Set to NULL to use malloc() and free().
* \param in Beginning of the input buffer
* \param in_pos The next byte will be read from in[*in_pos].
* *in_pos is updated only if decoding succeeds.
* \param in_size Size of the input buffer; the first byte that
* won't be read is in[in_size].
* \param out Beginning of the output buffer
* \param out_pos The next byte will be written to out[*out_pos].
* *out_pos is updated only if encoding succeeds.
* \param out_size Size of the out buffer; the first byte into
* which no data is written to is out[out_size].
*
* \return - LZMA_OK: Decoding was successful.
* - LZMA_OPTIONS_ERROR
* - LZMA_DATA_ERROR
* - LZMA_MEM_ERROR
* - LZMA_BUF_ERROR: Output buffer was too small.
* - LZMA_PROG_ERROR
*/
extern LZMA_API(lzma_ret) lzma_block_buffer_decode(
lzma_block *block, const lzma_allocator *allocator,
const uint8_t *in, size_t *in_pos, size_t in_size,
uint8_t *out, size_t *out_pos, size_t out_size)
lzma_nothrow;

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/**
* \file lzma/check.h
* \brief Integrity checks
*/
/*
* Author: Lasse Collin
*
* This file has been put into the public domain.
* You can do whatever you want with this file.
*
* See ../lzma.h for information about liblzma as a whole.
*/
#ifndef LZMA_H_INTERNAL
# error Never include this file directly. Use <lzma.h> instead.
#endif
/**
* \brief Type of the integrity check (Check ID)
*
* The .xz format supports multiple types of checks that are calculated
* from the uncompressed data. They vary in both speed and ability to
* detect errors.
*/
typedef enum {
LZMA_CHECK_NONE = 0,
/**<
* No Check is calculated.
*
* Size of the Check field: 0 bytes
*/
LZMA_CHECK_CRC32 = 1,
/**<
* CRC32 using the polynomial from the IEEE 802.3 standard
*
* Size of the Check field: 4 bytes
*/
LZMA_CHECK_CRC64 = 4,
/**<
* CRC64 using the polynomial from the ECMA-182 standard
*
* Size of the Check field: 8 bytes
*/
LZMA_CHECK_SHA256 = 10
/**<
* SHA-256
*
* Size of the Check field: 32 bytes
*/
} lzma_check;
/**
* \brief Maximum valid Check ID
*
* The .xz file format specification specifies 16 Check IDs (0-15). Some
* of them are only reserved, that is, no actual Check algorithm has been
* assigned. When decoding, liblzma still accepts unknown Check IDs for
* future compatibility. If a valid but unsupported Check ID is detected,
* liblzma can indicate a warning; see the flags LZMA_TELL_NO_CHECK,
* LZMA_TELL_UNSUPPORTED_CHECK, and LZMA_TELL_ANY_CHECK in container.h.
*/
#define LZMA_CHECK_ID_MAX 15
/**
* \brief Test if the given Check ID is supported
*
* Return true if the given Check ID is supported by this liblzma build.
* Otherwise false is returned. It is safe to call this with a value that
* is not in the range [0, 15]; in that case the return value is always false.
*
* You can assume that LZMA_CHECK_NONE and LZMA_CHECK_CRC32 are always
* supported (even if liblzma is built with limited features).
*/
extern LZMA_API(lzma_bool) lzma_check_is_supported(lzma_check check)
lzma_nothrow lzma_attr_const;
/**
* \brief Get the size of the Check field with the given Check ID
*
* Although not all Check IDs have a check algorithm associated, the size of
* every Check is already frozen. This function returns the size (in bytes) of
* the Check field with the specified Check ID. The values are:
* { 0, 4, 4, 4, 8, 8, 8, 16, 16, 16, 32, 32, 32, 64, 64, 64 }
*
* If the argument is not in the range [0, 15], UINT32_MAX is returned.
*/
extern LZMA_API(uint32_t) lzma_check_size(lzma_check check)
lzma_nothrow lzma_attr_const;
/**
* \brief Maximum size of a Check field
*/
#define LZMA_CHECK_SIZE_MAX 64
/**
* \brief Calculate CRC32
*
* Calculate CRC32 using the polynomial from the IEEE 802.3 standard.
*
* \param buf Pointer to the input buffer
* \param size Size of the input buffer
* \param crc Previously returned CRC value. This is used to
* calculate the CRC of a big buffer in smaller chunks.
* Set to zero when starting a new calculation.
*
* \return Updated CRC value, which can be passed to this function
* again to continue CRC calculation.
*/
extern LZMA_API(uint32_t) lzma_crc32(
const uint8_t *buf, size_t size, uint32_t crc)
lzma_nothrow lzma_attr_pure;
/**
* \brief Calculate CRC64
*
* Calculate CRC64 using the polynomial from the ECMA-182 standard.
*
* This function is used similarly to lzma_crc32(). See its documentation.
*/
extern LZMA_API(uint64_t) lzma_crc64(
const uint8_t *buf, size_t size, uint64_t crc)
lzma_nothrow lzma_attr_pure;
/*
* SHA-256 functions are currently not exported to public API.
* Contact Lasse Collin if you think it should be.
*/
/**
* \brief Get the type of the integrity check
*
* This function can be called only immediately after lzma_code() has
* returned LZMA_NO_CHECK, LZMA_UNSUPPORTED_CHECK, or LZMA_GET_CHECK.
* Calling this function in any other situation has undefined behavior.
*/
extern LZMA_API(lzma_check) lzma_get_check(const lzma_stream *strm)
lzma_nothrow;

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/**
* \file lzma/container.h
* \brief File formats
*/
/*
* Author: Lasse Collin
*
* This file has been put into the public domain.
* You can do whatever you want with this file.
*
* See ../lzma.h for information about liblzma as a whole.
*/
#ifndef LZMA_H_INTERNAL
# error Never include this file directly. Use <lzma.h> instead.
#endif
/************
* Encoding *
************/
/**
* \brief Default compression preset
*
* It's not straightforward to recommend a default preset, because in some
* cases keeping the resource usage relatively low is more important that
* getting the maximum compression ratio.
*/
#define LZMA_PRESET_DEFAULT UINT32_C(6)
/**
* \brief Mask for preset level
*
* This is useful only if you need to extract the level from the preset
* variable. That should be rare.
*/
#define LZMA_PRESET_LEVEL_MASK UINT32_C(0x1F)
/*
* Preset flags
*
* Currently only one flag is defined.
*/
/**
* \brief Extreme compression preset
*
* This flag modifies the preset to make the encoding significantly slower
* while improving the compression ratio only marginally. This is useful
* when you don't mind wasting time to get as small result as possible.
*
* This flag doesn't affect the memory usage requirements of the decoder (at
* least not significantly). The memory usage of the encoder may be increased
* a little but only at the lowest preset levels (0-3).
*/
#define LZMA_PRESET_EXTREME (UINT32_C(1) << 31)
/**
* \brief Multithreading options
*/
typedef struct {
/**
* \brief Flags
*
* Set this to zero if no flags are wanted.
*
* No flags are currently supported.
*/
uint32_t flags;
/**
* \brief Number of worker threads to use
*/
uint32_t threads;
/**
* \brief Maximum uncompressed size of a Block
*
* The encoder will start a new .xz Block every block_size bytes.
* Using LZMA_FULL_FLUSH or LZMA_FULL_BARRIER with lzma_code()
* the caller may tell liblzma to start a new Block earlier.
*
* With LZMA2, a recommended block size is 2-4 times the LZMA2
* dictionary size. With very small dictionaries, it is recommended
* to use at least 1 MiB block size for good compression ratio, even
* if this is more than four times the dictionary size. Note that
* these are only recommendations for typical use cases; feel free
* to use other values. Just keep in mind that using a block size
* less than the LZMA2 dictionary size is waste of RAM.
*
* Set this to 0 to let liblzma choose the block size depending
* on the compression options. For LZMA2 it will be 3*dict_size
* or 1 MiB, whichever is more.
*
* For each thread, about 3 * block_size bytes of memory will be
* allocated. This may change in later liblzma versions. If so,
* the memory usage will probably be reduced, not increased.
*/
uint64_t block_size;
/**
* \brief Timeout to allow lzma_code() to return early
*
* Multithreading can make liblzma to consume input and produce
* output in a very bursty way: it may first read a lot of input
* to fill internal buffers, then no input or output occurs for
* a while.
*
* In single-threaded mode, lzma_code() won't return until it has
* either consumed all the input or filled the output buffer. If
* this is done in multithreaded mode, it may cause a call
* lzma_code() to take even tens of seconds, which isn't acceptable
* in all applications.
*
* To avoid very long blocking times in lzma_code(), a timeout
* (in milliseconds) may be set here. If lzma_code() would block
* longer than this number of milliseconds, it will return with
* LZMA_OK. Reasonable values are 100 ms or more. The xz command
* line tool uses 300 ms.
*
* If long blocking times are fine for you, set timeout to a special
* value of 0, which will disable the timeout mechanism and will make
* lzma_code() block until all the input is consumed or the output
* buffer has been filled.
*
* \note Even with a timeout, lzma_code() might sometimes take
* somewhat long time to return. No timing guarantees
* are made.
*/
uint32_t timeout;
/**
* \brief Compression preset (level and possible flags)
*
* The preset is set just like with lzma_easy_encoder().
* The preset is ignored if filters below is non-NULL.
*/
uint32_t preset;
/**
* \brief Filter chain (alternative to a preset)
*
* If this is NULL, the preset above is used. Otherwise the preset
* is ignored and the filter chain specified here is used.
*/
const lzma_filter *filters;
/**
* \brief Integrity check type
*
* See check.h for available checks. The xz command line tool
* defaults to LZMA_CHECK_CRC64, which is a good choice if you
* are unsure.
*/
lzma_check check;
/*
* Reserved space to allow possible future extensions without
* breaking the ABI. You should not touch these, because the names
* of these variables may change. These are and will never be used
* with the currently supported options, so it is safe to leave these
* uninitialized.
*/
lzma_reserved_enum reserved_enum1;
lzma_reserved_enum reserved_enum2;
lzma_reserved_enum reserved_enum3;
uint32_t reserved_int1;
uint32_t reserved_int2;
uint32_t reserved_int3;
uint32_t reserved_int4;
uint64_t reserved_int5;
uint64_t reserved_int6;
uint64_t reserved_int7;
uint64_t reserved_int8;
void *reserved_ptr1;
void *reserved_ptr2;
void *reserved_ptr3;
void *reserved_ptr4;
} lzma_mt;
/**
* \brief Calculate approximate memory usage of easy encoder
*
* This function is a wrapper for lzma_raw_encoder_memusage().
*
* \param preset Compression preset (level and possible flags)
*
* \return Number of bytes of memory required for the given
* preset when encoding. If an error occurs, for example
* due to unsupported preset, UINT64_MAX is returned.
*/
extern LZMA_API(uint64_t) lzma_easy_encoder_memusage(uint32_t preset)
lzma_nothrow lzma_attr_pure;
/**
* \brief Calculate approximate decoder memory usage of a preset
*
* This function is a wrapper for lzma_raw_decoder_memusage().
*
* \param preset Compression preset (level and possible flags)
*
* \return Number of bytes of memory required to decompress a file
* that was compressed using the given preset. If an error
* occurs, for example due to unsupported preset, UINT64_MAX
* is returned.
*/
extern LZMA_API(uint64_t) lzma_easy_decoder_memusage(uint32_t preset)
lzma_nothrow lzma_attr_pure;
/**
* \brief Initialize .xz Stream encoder using a preset number
*
* This function is intended for those who just want to use the basic features
* if liblzma (that is, most developers out there).
*
* \param strm Pointer to lzma_stream that is at least initialized
* with LZMA_STREAM_INIT.
* \param preset Compression preset to use. A preset consist of level
* number and zero or more flags. Usually flags aren't
* used, so preset is simply a number [0, 9] which match
* the options -0 ... -9 of the xz command line tool.
* Additional flags can be be set using bitwise-or with
* the preset level number, e.g. 6 | LZMA_PRESET_EXTREME.
* \param check Integrity check type to use. See check.h for available
* checks. The xz command line tool defaults to
* LZMA_CHECK_CRC64, which is a good choice if you are
* unsure. LZMA_CHECK_CRC32 is good too as long as the
* uncompressed file is not many gigabytes.
*
* \return - LZMA_OK: Initialization succeeded. Use lzma_code() to
* encode your data.
* - LZMA_MEM_ERROR: Memory allocation failed.
* - LZMA_OPTIONS_ERROR: The given compression preset is not
* supported by this build of liblzma.
* - LZMA_UNSUPPORTED_CHECK: The given check type is not
* supported by this liblzma build.
* - LZMA_PROG_ERROR: One or more of the parameters have values
* that will never be valid. For example, strm == NULL.
*
* If initialization fails (return value is not LZMA_OK), all the memory
* allocated for *strm by liblzma is always freed. Thus, there is no need
* to call lzma_end() after failed initialization.
*
* If initialization succeeds, use lzma_code() to do the actual encoding.
* Valid values for `action' (the second argument of lzma_code()) are
* LZMA_RUN, LZMA_SYNC_FLUSH, LZMA_FULL_FLUSH, and LZMA_FINISH. In future,
* there may be compression levels or flags that don't support LZMA_SYNC_FLUSH.
*/
extern LZMA_API(lzma_ret) lzma_easy_encoder(
lzma_stream *strm, uint32_t preset, lzma_check check)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Single-call .xz Stream encoding using a preset number
*
* The maximum required output buffer size can be calculated with
* lzma_stream_buffer_bound().
*
* \param preset Compression preset to use. See the description
* in lzma_easy_encoder().
* \param check Type of the integrity check to calculate from
* uncompressed data.
* \param allocator lzma_allocator for custom allocator functions.
* Set to NULL to use malloc() and free().
* \param in Beginning of the input buffer
* \param in_size Size of the input buffer
* \param out Beginning of the output buffer
* \param out_pos The next byte will be written to out[*out_pos].
* *out_pos is updated only if encoding succeeds.
* \param out_size Size of the out buffer; the first byte into
* which no data is written to is out[out_size].
*
* \return - LZMA_OK: Encoding was successful.
* - LZMA_BUF_ERROR: Not enough output buffer space.
* - LZMA_UNSUPPORTED_CHECK
* - LZMA_OPTIONS_ERROR
* - LZMA_MEM_ERROR
* - LZMA_DATA_ERROR
* - LZMA_PROG_ERROR
*/
extern LZMA_API(lzma_ret) lzma_easy_buffer_encode(
uint32_t preset, lzma_check check,
const lzma_allocator *allocator,
const uint8_t *in, size_t in_size,
uint8_t *out, size_t *out_pos, size_t out_size) lzma_nothrow;
/**
* \brief Initialize .xz Stream encoder using a custom filter chain
*
* \param strm Pointer to properly prepared lzma_stream
* \param filters Array of filters. This must be terminated with
* filters[n].id = LZMA_VLI_UNKNOWN. See filter.h for
* more information.
* \param check Type of the integrity check to calculate from
* uncompressed data.
*
* \return - LZMA_OK: Initialization was successful.
* - LZMA_MEM_ERROR
* - LZMA_UNSUPPORTED_CHECK
* - LZMA_OPTIONS_ERROR
* - LZMA_PROG_ERROR
*/
extern LZMA_API(lzma_ret) lzma_stream_encoder(lzma_stream *strm,
const lzma_filter *filters, lzma_check check)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Calculate approximate memory usage of multithreaded .xz encoder
*
* Since doing the encoding in threaded mode doesn't affect the memory
* requirements of single-threaded decompressor, you can use
* lzma_easy_decoder_memusage(options->preset) or
* lzma_raw_decoder_memusage(options->filters) to calculate
* the decompressor memory requirements.
*
* \param options Compression options
*
* \return Number of bytes of memory required for encoding with the
* given options. If an error occurs, for example due to
* unsupported preset or filter chain, UINT64_MAX is returned.
*/
extern LZMA_API(uint64_t) lzma_stream_encoder_mt_memusage(
const lzma_mt *options) lzma_nothrow lzma_attr_pure;
/**
* \brief Initialize multithreaded .xz Stream encoder
*
* This provides the functionality of lzma_easy_encoder() and
* lzma_stream_encoder() as a single function for multithreaded use.
*
* The supported actions for lzma_code() are LZMA_RUN, LZMA_FULL_FLUSH,
* LZMA_FULL_BARRIER, and LZMA_FINISH. Support for LZMA_SYNC_FLUSH might be
* added in the future.
*
* \param strm Pointer to properly prepared lzma_stream
* \param options Pointer to multithreaded compression options
*
* \return - LZMA_OK
* - LZMA_MEM_ERROR
* - LZMA_UNSUPPORTED_CHECK
* - LZMA_OPTIONS_ERROR
* - LZMA_PROG_ERROR
*/
extern LZMA_API(lzma_ret) lzma_stream_encoder_mt(
lzma_stream *strm, const lzma_mt *options)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Initialize .lzma encoder (legacy file format)
*
* The .lzma format is sometimes called the LZMA_Alone format, which is the
* reason for the name of this function. The .lzma format supports only the
* LZMA1 filter. There is no support for integrity checks like CRC32.
*
* Use this function if and only if you need to create files readable by
* legacy LZMA tools such as LZMA Utils 4.32.x. Moving to the .xz format
* is strongly recommended.
*
* The valid action values for lzma_code() are LZMA_RUN and LZMA_FINISH.
* No kind of flushing is supported, because the file format doesn't make
* it possible.
*
* \return - LZMA_OK
* - LZMA_MEM_ERROR
* - LZMA_OPTIONS_ERROR
* - LZMA_PROG_ERROR
*/
extern LZMA_API(lzma_ret) lzma_alone_encoder(
lzma_stream *strm, const lzma_options_lzma *options)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Calculate output buffer size for single-call Stream encoder
*
* When trying to compress uncompressible data, the encoded size will be
* slightly bigger than the input data. This function calculates how much
* output buffer space is required to be sure that lzma_stream_buffer_encode()
* doesn't return LZMA_BUF_ERROR.
*
* The calculated value is not exact, but it is guaranteed to be big enough.
* The actual maximum output space required may be slightly smaller (up to
* about 100 bytes). This should not be a problem in practice.
*
* If the calculated maximum size doesn't fit into size_t or would make the
* Stream grow past LZMA_VLI_MAX (which should never happen in practice),
* zero is returned to indicate the error.
*
* \note The limit calculated by this function applies only to
* single-call encoding. Multi-call encoding may (and probably
* will) have larger maximum expansion when encoding
* uncompressible data. Currently there is no function to
* calculate the maximum expansion of multi-call encoding.
*/
extern LZMA_API(size_t) lzma_stream_buffer_bound(size_t uncompressed_size)
lzma_nothrow;
/**
* \brief Single-call .xz Stream encoder
*
* \param filters Array of filters. This must be terminated with
* filters[n].id = LZMA_VLI_UNKNOWN. See filter.h
* for more information.
* \param check Type of the integrity check to calculate from
* uncompressed data.
* \param allocator lzma_allocator for custom allocator functions.
* Set to NULL to use malloc() and free().
* \param in Beginning of the input buffer
* \param in_size Size of the input buffer
* \param out Beginning of the output buffer
* \param out_pos The next byte will be written to out[*out_pos].
* *out_pos is updated only if encoding succeeds.
* \param out_size Size of the out buffer; the first byte into
* which no data is written to is out[out_size].
*
* \return - LZMA_OK: Encoding was successful.
* - LZMA_BUF_ERROR: Not enough output buffer space.
* - LZMA_UNSUPPORTED_CHECK
* - LZMA_OPTIONS_ERROR
* - LZMA_MEM_ERROR
* - LZMA_DATA_ERROR
* - LZMA_PROG_ERROR
*/
extern LZMA_API(lzma_ret) lzma_stream_buffer_encode(
lzma_filter *filters, lzma_check check,
const lzma_allocator *allocator,
const uint8_t *in, size_t in_size,
uint8_t *out, size_t *out_pos, size_t out_size)
lzma_nothrow lzma_attr_warn_unused_result;
/************
* Decoding *
************/
/**
* This flag makes lzma_code() return LZMA_NO_CHECK if the input stream
* being decoded has no integrity check. Note that when used with
* lzma_auto_decoder(), all .lzma files will trigger LZMA_NO_CHECK
* if LZMA_TELL_NO_CHECK is used.
*/
#define LZMA_TELL_NO_CHECK UINT32_C(0x01)
/**
* This flag makes lzma_code() return LZMA_UNSUPPORTED_CHECK if the input
* stream has an integrity check, but the type of the integrity check is not
* supported by this liblzma version or build. Such files can still be
* decoded, but the integrity check cannot be verified.
*/
#define LZMA_TELL_UNSUPPORTED_CHECK UINT32_C(0x02)
/**
* This flag makes lzma_code() return LZMA_GET_CHECK as soon as the type
* of the integrity check is known. The type can then be got with
* lzma_get_check().
*/
#define LZMA_TELL_ANY_CHECK UINT32_C(0x04)
/**
* This flag makes lzma_code() not calculate and verify the integrity check
* of the compressed data in .xz files. This means that invalid integrity
* check values won't be detected and LZMA_DATA_ERROR won't be returned in
* such cases.
*
* This flag only affects the checks of the compressed data itself; the CRC32
* values in the .xz headers will still be verified normally.
*
* Don't use this flag unless you know what you are doing. Possible reasons
* to use this flag:
*
* - Trying to recover data from a corrupt .xz file.
*
* - Speeding up decompression, which matters mostly with SHA-256
* or with files that have compressed extremely well. It's recommended
* to not use this flag for this purpose unless the file integrity is
* verified externally in some other way.
*
* Support for this flag was added in liblzma 5.1.4beta.
*/
#define LZMA_IGNORE_CHECK UINT32_C(0x10)
/**
* This flag enables decoding of concatenated files with file formats that
* allow concatenating compressed files as is. From the formats currently
* supported by liblzma, only the .xz format allows concatenated files.
* Concatenated files are not allowed with the legacy .lzma format.
*
* This flag also affects the usage of the `action' argument for lzma_code().
* When LZMA_CONCATENATED is used, lzma_code() won't return LZMA_STREAM_END
* unless LZMA_FINISH is used as `action'. Thus, the application has to set
* LZMA_FINISH in the same way as it does when encoding.
*
* If LZMA_CONCATENATED is not used, the decoders still accept LZMA_FINISH
* as `action' for lzma_code(), but the usage of LZMA_FINISH isn't required.
*/
#define LZMA_CONCATENATED UINT32_C(0x08)
/**
* \brief Initialize .xz Stream decoder
*
* \param strm Pointer to properly prepared lzma_stream
* \param memlimit Memory usage limit as bytes. Use UINT64_MAX
* to effectively disable the limiter. liblzma
* 5.2.3 and earlier don't allow 0 here and return
* LZMA_PROG_ERROR; later versions treat 0 as if 1
* had been specified.
* \param flags Bitwise-or of zero or more of the decoder flags:
* LZMA_TELL_NO_CHECK, LZMA_TELL_UNSUPPORTED_CHECK,
* LZMA_TELL_ANY_CHECK, LZMA_CONCATENATED
*
* \return - LZMA_OK: Initialization was successful.
* - LZMA_MEM_ERROR: Cannot allocate memory.
* - LZMA_OPTIONS_ERROR: Unsupported flags
* - LZMA_PROG_ERROR
*/
extern LZMA_API(lzma_ret) lzma_stream_decoder(
lzma_stream *strm, uint64_t memlimit, uint32_t flags)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Decode .xz Streams and .lzma files with autodetection
*
* This decoder autodetects between the .xz and .lzma file formats, and
* calls lzma_stream_decoder() or lzma_alone_decoder() once the type
* of the input file has been detected.
*
* \param strm Pointer to properly prepared lzma_stream
* \param memlimit Memory usage limit as bytes. Use UINT64_MAX
* to effectively disable the limiter. liblzma
* 5.2.3 and earlier don't allow 0 here and return
* LZMA_PROG_ERROR; later versions treat 0 as if 1
* had been specified.
* \param flags Bitwise-or of flags, or zero for no flags.
*
* \return - LZMA_OK: Initialization was successful.
* - LZMA_MEM_ERROR: Cannot allocate memory.
* - LZMA_OPTIONS_ERROR: Unsupported flags
* - LZMA_PROG_ERROR
*/
extern LZMA_API(lzma_ret) lzma_auto_decoder(
lzma_stream *strm, uint64_t memlimit, uint32_t flags)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Initialize .lzma decoder (legacy file format)
*
* \param strm Pointer to properly prepared lzma_stream
* \param memlimit Memory usage limit as bytes. Use UINT64_MAX
* to effectively disable the limiter. liblzma
* 5.2.3 and earlier don't allow 0 here and return
* LZMA_PROG_ERROR; later versions treat 0 as if 1
* had been specified.
*
* Valid `action' arguments to lzma_code() are LZMA_RUN and LZMA_FINISH.
* There is no need to use LZMA_FINISH, but it's allowed because it may
* simplify certain types of applications.
*
* \return - LZMA_OK
* - LZMA_MEM_ERROR
* - LZMA_PROG_ERROR
*/
extern LZMA_API(lzma_ret) lzma_alone_decoder(
lzma_stream *strm, uint64_t memlimit)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Single-call .xz Stream decoder
*
* \param memlimit Pointer to how much memory the decoder is allowed
* to allocate. The value pointed by this pointer is
* modified if and only if LZMA_MEMLIMIT_ERROR is
* returned.
* \param flags Bitwise-or of zero or more of the decoder flags:
* LZMA_TELL_NO_CHECK, LZMA_TELL_UNSUPPORTED_CHECK,
* LZMA_CONCATENATED. Note that LZMA_TELL_ANY_CHECK
* is not allowed and will return LZMA_PROG_ERROR.
* \param allocator lzma_allocator for custom allocator functions.
* Set to NULL to use malloc() and free().
* \param in Beginning of the input buffer
* \param in_pos The next byte will be read from in[*in_pos].
* *in_pos is updated only if decoding succeeds.
* \param in_size Size of the input buffer; the first byte that
* won't be read is in[in_size].
* \param out Beginning of the output buffer
* \param out_pos The next byte will be written to out[*out_pos].
* *out_pos is updated only if decoding succeeds.
* \param out_size Size of the out buffer; the first byte into
* which no data is written to is out[out_size].
*
* \return - LZMA_OK: Decoding was successful.
* - LZMA_FORMAT_ERROR
* - LZMA_OPTIONS_ERROR
* - LZMA_DATA_ERROR
* - LZMA_NO_CHECK: This can be returned only if using
* the LZMA_TELL_NO_CHECK flag.
* - LZMA_UNSUPPORTED_CHECK: This can be returned only if using
* the LZMA_TELL_UNSUPPORTED_CHECK flag.
* - LZMA_MEM_ERROR
* - LZMA_MEMLIMIT_ERROR: Memory usage limit was reached.
* The minimum required memlimit value was stored to *memlimit.
* - LZMA_BUF_ERROR: Output buffer was too small.
* - LZMA_PROG_ERROR
*/
extern LZMA_API(lzma_ret) lzma_stream_buffer_decode(
uint64_t *memlimit, uint32_t flags,
const lzma_allocator *allocator,
const uint8_t *in, size_t *in_pos, size_t in_size,
uint8_t *out, size_t *out_pos, size_t out_size)
lzma_nothrow lzma_attr_warn_unused_result;

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/**
* \file lzma/delta.h
* \brief Delta filter
*/
/*
* Author: Lasse Collin
*
* This file has been put into the public domain.
* You can do whatever you want with this file.
*
* See ../lzma.h for information about liblzma as a whole.
*/
#ifndef LZMA_H_INTERNAL
# error Never include this file directly. Use <lzma.h> instead.
#endif
/**
* \brief Filter ID
*
* Filter ID of the Delta filter. This is used as lzma_filter.id.
*/
#define LZMA_FILTER_DELTA LZMA_VLI_C(0x03)
/**
* \brief Type of the delta calculation
*
* Currently only byte-wise delta is supported. Other possible types could
* be, for example, delta of 16/32/64-bit little/big endian integers, but
* these are not currently planned since byte-wise delta is almost as good.
*/
typedef enum {
LZMA_DELTA_TYPE_BYTE
} lzma_delta_type;
/**
* \brief Options for the Delta filter
*
* These options are needed by both encoder and decoder.
*/
typedef struct {
/** For now, this must always be LZMA_DELTA_TYPE_BYTE. */
lzma_delta_type type;
/**
* \brief Delta distance
*
* With the only currently supported type, LZMA_DELTA_TYPE_BYTE,
* the distance is as bytes.
*
* Examples:
* - 16-bit stereo audio: distance = 4 bytes
* - 24-bit RGB image data: distance = 3 bytes
*/
uint32_t dist;
# define LZMA_DELTA_DIST_MIN 1
# define LZMA_DELTA_DIST_MAX 256
/*
* Reserved space to allow possible future extensions without
* breaking the ABI. You should not touch these, because the names
* of these variables may change. These are and will never be used
* when type is LZMA_DELTA_TYPE_BYTE, so it is safe to leave these
* uninitialized.
*/
uint32_t reserved_int1;
uint32_t reserved_int2;
uint32_t reserved_int3;
uint32_t reserved_int4;
void *reserved_ptr1;
void *reserved_ptr2;
} lzma_options_delta;

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/**
* \file lzma/filter.h
* \brief Common filter related types and functions
*/
/*
* Author: Lasse Collin
*
* This file has been put into the public domain.
* You can do whatever you want with this file.
*
* See ../lzma.h for information about liblzma as a whole.
*/
#ifndef LZMA_H_INTERNAL
# error Never include this file directly. Use <lzma.h> instead.
#endif
/**
* \brief Maximum number of filters in a chain
*
* A filter chain can have 1-4 filters, of which three are allowed to change
* the size of the data. Usually only one or two filters are needed.
*/
#define LZMA_FILTERS_MAX 4
/**
* \brief Filter options
*
* This structure is used to pass Filter ID and a pointer filter's
* options to liblzma. A few functions work with a single lzma_filter
* structure, while most functions expect a filter chain.
*
* A filter chain is indicated with an array of lzma_filter structures.
* The array is terminated with .id = LZMA_VLI_UNKNOWN. Thus, the filter
* array must have LZMA_FILTERS_MAX + 1 elements (that is, five) to
* be able to hold any arbitrary filter chain. This is important when
* using lzma_block_header_decode() from block.h, because too small
* array would make liblzma write past the end of the filters array.
*/
typedef struct {
/**
* \brief Filter ID
*
* Use constants whose name begin with `LZMA_FILTER_' to specify
* different filters. In an array of lzma_filter structures, use
* LZMA_VLI_UNKNOWN to indicate end of filters.
*
* \note This is not an enum, because on some systems enums
* cannot be 64-bit.
*/
lzma_vli id;
/**
* \brief Pointer to filter-specific options structure
*
* If the filter doesn't need options, set this to NULL. If id is
* set to LZMA_VLI_UNKNOWN, options is ignored, and thus
* doesn't need be initialized.
*/
void *options;
} lzma_filter;
/**
* \brief Test if the given Filter ID is supported for encoding
*
* Return true if the give Filter ID is supported for encoding by this
* liblzma build. Otherwise false is returned.
*
* There is no way to list which filters are available in this particular
* liblzma version and build. It would be useless, because the application
* couldn't know what kind of options the filter would need.
*/
extern LZMA_API(lzma_bool) lzma_filter_encoder_is_supported(lzma_vli id)
lzma_nothrow lzma_attr_const;
/**
* \brief Test if the given Filter ID is supported for decoding
*
* Return true if the give Filter ID is supported for decoding by this
* liblzma build. Otherwise false is returned.
*/
extern LZMA_API(lzma_bool) lzma_filter_decoder_is_supported(lzma_vli id)
lzma_nothrow lzma_attr_const;
/**
* \brief Copy the filters array
*
* Copy the Filter IDs and filter-specific options from src to dest.
* Up to LZMA_FILTERS_MAX filters are copied, plus the terminating
* .id == LZMA_VLI_UNKNOWN. Thus, dest should have at least
* LZMA_FILTERS_MAX + 1 elements space unless the caller knows that
* src is smaller than that.
*
* Unless the filter-specific options is NULL, the Filter ID has to be
* supported by liblzma, because liblzma needs to know the size of every
* filter-specific options structure. The filter-specific options are not
* validated. If options is NULL, any unsupported Filter IDs are copied
* without returning an error.
*
* Old filter-specific options in dest are not freed, so dest doesn't
* need to be initialized by the caller in any way.
*
* If an error occurs, memory possibly already allocated by this function
* is always freed.
*
* \return - LZMA_OK
* - LZMA_MEM_ERROR
* - LZMA_OPTIONS_ERROR: Unsupported Filter ID and its options
* is not NULL.
* - LZMA_PROG_ERROR: src or dest is NULL.
*/
extern LZMA_API(lzma_ret) lzma_filters_copy(
const lzma_filter *src, lzma_filter *dest,
const lzma_allocator *allocator) lzma_nothrow;
/**
* \brief Calculate approximate memory requirements for raw encoder
*
* This function can be used to calculate the memory requirements for
* Block and Stream encoders too because Block and Stream encoders don't
* need significantly more memory than raw encoder.
*
* \param filters Array of filters terminated with
* .id == LZMA_VLI_UNKNOWN.
*
* \return Number of bytes of memory required for the given
* filter chain when encoding. If an error occurs,
* for example due to unsupported filter chain,
* UINT64_MAX is returned.
*/
extern LZMA_API(uint64_t) lzma_raw_encoder_memusage(const lzma_filter *filters)
lzma_nothrow lzma_attr_pure;
/**
* \brief Calculate approximate memory requirements for raw decoder
*
* This function can be used to calculate the memory requirements for
* Block and Stream decoders too because Block and Stream decoders don't
* need significantly more memory than raw decoder.
*
* \param filters Array of filters terminated with
* .id == LZMA_VLI_UNKNOWN.
*
* \return Number of bytes of memory required for the given
* filter chain when decoding. If an error occurs,
* for example due to unsupported filter chain,
* UINT64_MAX is returned.
*/
extern LZMA_API(uint64_t) lzma_raw_decoder_memusage(const lzma_filter *filters)
lzma_nothrow lzma_attr_pure;
/**
* \brief Initialize raw encoder
*
* This function may be useful when implementing custom file formats.
*
* \param strm Pointer to properly prepared lzma_stream
* \param filters Array of lzma_filter structures. The end of the
* array must be marked with .id = LZMA_VLI_UNKNOWN.
*
* The `action' with lzma_code() can be LZMA_RUN, LZMA_SYNC_FLUSH (if the
* filter chain supports it), or LZMA_FINISH.
*
* \return - LZMA_OK
* - LZMA_MEM_ERROR
* - LZMA_OPTIONS_ERROR
* - LZMA_PROG_ERROR
*/
extern LZMA_API(lzma_ret) lzma_raw_encoder(
lzma_stream *strm, const lzma_filter *filters)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Initialize raw decoder
*
* The initialization of raw decoder goes similarly to raw encoder.
*
* The `action' with lzma_code() can be LZMA_RUN or LZMA_FINISH. Using
* LZMA_FINISH is not required, it is supported just for convenience.
*
* \return - LZMA_OK
* - LZMA_MEM_ERROR
* - LZMA_OPTIONS_ERROR
* - LZMA_PROG_ERROR
*/
extern LZMA_API(lzma_ret) lzma_raw_decoder(
lzma_stream *strm, const lzma_filter *filters)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Update the filter chain in the encoder
*
* This function is for advanced users only. This function has two slightly
* different purposes:
*
* - After LZMA_FULL_FLUSH when using Stream encoder: Set a new filter
* chain, which will be used starting from the next Block.
*
* - After LZMA_SYNC_FLUSH using Raw, Block, or Stream encoder: Change
* the filter-specific options in the middle of encoding. The actual
* filters in the chain (Filter IDs) cannot be changed. In the future,
* it might become possible to change the filter options without
* using LZMA_SYNC_FLUSH.
*
* While rarely useful, this function may be called also when no data has
* been compressed yet. In that case, this function will behave as if
* LZMA_FULL_FLUSH (Stream encoder) or LZMA_SYNC_FLUSH (Raw or Block
* encoder) had been used right before calling this function.
*
* \return - LZMA_OK
* - LZMA_MEM_ERROR
* - LZMA_MEMLIMIT_ERROR
* - LZMA_OPTIONS_ERROR
* - LZMA_PROG_ERROR
*/
extern LZMA_API(lzma_ret) lzma_filters_update(
lzma_stream *strm, const lzma_filter *filters) lzma_nothrow;
/**
* \brief Single-call raw encoder
*
* \param filters Array of lzma_filter structures. The end of the
* array must be marked with .id = LZMA_VLI_UNKNOWN.
* \param allocator lzma_allocator for custom allocator functions.
* Set to NULL to use malloc() and free().
* \param in Beginning of the input buffer
* \param in_size Size of the input buffer
* \param out Beginning of the output buffer
* \param out_pos The next byte will be written to out[*out_pos].
* *out_pos is updated only if encoding succeeds.
* \param out_size Size of the out buffer; the first byte into
* which no data is written to is out[out_size].
*
* \return - LZMA_OK: Encoding was successful.
* - LZMA_BUF_ERROR: Not enough output buffer space.
* - LZMA_OPTIONS_ERROR
* - LZMA_MEM_ERROR
* - LZMA_DATA_ERROR
* - LZMA_PROG_ERROR
*
* \note There is no function to calculate how big output buffer
* would surely be big enough. (lzma_stream_buffer_bound()
* works only for lzma_stream_buffer_encode(); raw encoder
* won't necessarily meet that bound.)
*/
extern LZMA_API(lzma_ret) lzma_raw_buffer_encode(
const lzma_filter *filters, const lzma_allocator *allocator,
const uint8_t *in, size_t in_size, uint8_t *out,
size_t *out_pos, size_t out_size) lzma_nothrow;
/**
* \brief Single-call raw decoder
*
* \param filters Array of lzma_filter structures. The end of the
* array must be marked with .id = LZMA_VLI_UNKNOWN.
* \param allocator lzma_allocator for custom allocator functions.
* Set to NULL to use malloc() and free().
* \param in Beginning of the input buffer
* \param in_pos The next byte will be read from in[*in_pos].
* *in_pos is updated only if decoding succeeds.
* \param in_size Size of the input buffer; the first byte that
* won't be read is in[in_size].
* \param out Beginning of the output buffer
* \param out_pos The next byte will be written to out[*out_pos].
* *out_pos is updated only if encoding succeeds.
* \param out_size Size of the out buffer; the first byte into
* which no data is written to is out[out_size].
*/
extern LZMA_API(lzma_ret) lzma_raw_buffer_decode(
const lzma_filter *filters, const lzma_allocator *allocator,
const uint8_t *in, size_t *in_pos, size_t in_size,
uint8_t *out, size_t *out_pos, size_t out_size) lzma_nothrow;
/**
* \brief Get the size of the Filter Properties field
*
* This function may be useful when implementing custom file formats
* using the raw encoder and decoder.
*
* \param size Pointer to uint32_t to hold the size of the properties
* \param filter Filter ID and options (the size of the properties may
* vary depending on the options)
*
* \return - LZMA_OK
* - LZMA_OPTIONS_ERROR
* - LZMA_PROG_ERROR
*
* \note This function validates the Filter ID, but does not
* necessarily validate the options. Thus, it is possible
* that this returns LZMA_OK while the following call to
* lzma_properties_encode() returns LZMA_OPTIONS_ERROR.
*/
extern LZMA_API(lzma_ret) lzma_properties_size(
uint32_t *size, const lzma_filter *filter) lzma_nothrow;
/**
* \brief Encode the Filter Properties field
*
* \param filter Filter ID and options
* \param props Buffer to hold the encoded options. The size of
* buffer must have been already determined with
* lzma_properties_size().
*
* \return - LZMA_OK
* - LZMA_OPTIONS_ERROR
* - LZMA_PROG_ERROR
*
* \note Even this function won't validate more options than actually
* necessary. Thus, it is possible that encoding the properties
* succeeds but using the same options to initialize the encoder
* will fail.
*
* \note If lzma_properties_size() indicated that the size
* of the Filter Properties field is zero, calling
* lzma_properties_encode() is not required, but it
* won't do any harm either.
*/
extern LZMA_API(lzma_ret) lzma_properties_encode(
const lzma_filter *filter, uint8_t *props) lzma_nothrow;
/**
* \brief Decode the Filter Properties field
*
* \param filter filter->id must have been set to the correct
* Filter ID. filter->options doesn't need to be
* initialized (it's not freed by this function). The
* decoded options will be stored to filter->options.
* filter->options is set to NULL if there are no
* properties or if an error occurs.
* \param allocator Custom memory allocator used to allocate the
* options. Set to NULL to use the default malloc(),
* and in case of an error, also free().
* \param props Input buffer containing the properties.
* \param props_size Size of the properties. This must be the exact
* size; giving too much or too little input will
* return LZMA_OPTIONS_ERROR.
*
* \return - LZMA_OK
* - LZMA_OPTIONS_ERROR
* - LZMA_MEM_ERROR
*/
extern LZMA_API(lzma_ret) lzma_properties_decode(
lzma_filter *filter, const lzma_allocator *allocator,
const uint8_t *props, size_t props_size) lzma_nothrow;
/**
* \brief Calculate encoded size of a Filter Flags field
*
* Knowing the size of Filter Flags is useful to know when allocating
* memory to hold the encoded Filter Flags.
*
* \param size Pointer to integer to hold the calculated size
* \param filter Filter ID and associated options whose encoded
* size is to be calculated
*
* \return - LZMA_OK: *size set successfully. Note that this doesn't
* guarantee that filter->options is valid, thus
* lzma_filter_flags_encode() may still fail.
* - LZMA_OPTIONS_ERROR: Unknown Filter ID or unsupported options.
* - LZMA_PROG_ERROR: Invalid options
*
* \note If you need to calculate size of List of Filter Flags,
* you need to loop over every lzma_filter entry.
*/
extern LZMA_API(lzma_ret) lzma_filter_flags_size(
uint32_t *size, const lzma_filter *filter)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Encode Filter Flags into given buffer
*
* In contrast to some functions, this doesn't allocate the needed buffer.
* This is due to how this function is used internally by liblzma.
*
* \param filter Filter ID and options to be encoded
* \param out Beginning of the output buffer
* \param out_pos out[*out_pos] is the next write position. This
* is updated by the encoder.
* \param out_size out[out_size] is the first byte to not write.
*
* \return - LZMA_OK: Encoding was successful.
* - LZMA_OPTIONS_ERROR: Invalid or unsupported options.
* - LZMA_PROG_ERROR: Invalid options or not enough output
* buffer space (you should have checked it with
* lzma_filter_flags_size()).
*/
extern LZMA_API(lzma_ret) lzma_filter_flags_encode(const lzma_filter *filter,
uint8_t *out, size_t *out_pos, size_t out_size)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Decode Filter Flags from given buffer
*
* The decoded result is stored into *filter. The old value of
* filter->options is not free()d.
*
* \return - LZMA_OK
* - LZMA_OPTIONS_ERROR
* - LZMA_MEM_ERROR
* - LZMA_PROG_ERROR
*/
extern LZMA_API(lzma_ret) lzma_filter_flags_decode(
lzma_filter *filter, const lzma_allocator *allocator,
const uint8_t *in, size_t *in_pos, size_t in_size)
lzma_nothrow lzma_attr_warn_unused_result;

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/**
* \file lzma/hardware.h
* \brief Hardware information
*
* Since liblzma can consume a lot of system resources, it also provides
* ways to limit the resource usage. Applications linking against liblzma
* need to do the actual decisions how much resources to let liblzma to use.
* To ease making these decisions, liblzma provides functions to find out
* the relevant capabilities of the underlaying hardware. Currently there
* is only a function to find out the amount of RAM, but in the future there
* will be also a function to detect how many concurrent threads the system
* can run.
*
* \note On some operating systems, these function may temporarily
* load a shared library or open file descriptor(s) to find out
* the requested hardware information. Unless the application
* assumes that specific file descriptors are not touched by
* other threads, this should have no effect on thread safety.
* Possible operations involving file descriptors will restart
* the syscalls if they return EINTR.
*/
/*
* Author: Lasse Collin
*
* This file has been put into the public domain.
* You can do whatever you want with this file.
*
* See ../lzma.h for information about liblzma as a whole.
*/
#ifndef LZMA_H_INTERNAL
# error Never include this file directly. Use <lzma.h> instead.
#endif
/**
* \brief Get the total amount of physical memory (RAM) in bytes
*
* This function may be useful when determining a reasonable memory
* usage limit for decompressing or how much memory it is OK to use
* for compressing.
*
* \return On success, the total amount of physical memory in bytes
* is returned. If the amount of RAM cannot be determined,
* zero is returned. This can happen if an error occurs
* or if there is no code in liblzma to detect the amount
* of RAM on the specific operating system.
*/
extern LZMA_API(uint64_t) lzma_physmem(void) lzma_nothrow;
/**
* \brief Get the number of processor cores or threads
*
* This function may be useful when determining how many threads to use.
* If the hardware supports more than one thread per CPU core, the number
* of hardware threads is returned if that information is available.
*
* \brief On success, the number of available CPU threads or cores is
* returned. If this information isn't available or an error
* occurs, zero is returned.
*/
extern LZMA_API(uint32_t) lzma_cputhreads(void) lzma_nothrow;

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/**
* \file lzma/index.h
* \brief Handling of .xz Index and related information
*/
/*
* Author: Lasse Collin
*
* This file has been put into the public domain.
* You can do whatever you want with this file.
*
* See ../lzma.h for information about liblzma as a whole.
*/
#ifndef LZMA_H_INTERNAL
# error Never include this file directly. Use <lzma.h> instead.
#endif
/**
* \brief Opaque data type to hold the Index(es) and other information
*
* lzma_index often holds just one .xz Index and possibly the Stream Flags
* of the same Stream and size of the Stream Padding field. However,
* multiple lzma_indexes can be concatenated with lzma_index_cat() and then
* there may be information about multiple Streams in the same lzma_index.
*
* Notes about thread safety: Only one thread may modify lzma_index at
* a time. All functions that take non-const pointer to lzma_index
* modify it. As long as no thread is modifying the lzma_index, getting
* information from the same lzma_index can be done from multiple threads
* at the same time with functions that take a const pointer to
* lzma_index or use lzma_index_iter. The same iterator must be used
* only by one thread at a time, of course, but there can be as many
* iterators for the same lzma_index as needed.
*/
typedef struct lzma_index_s lzma_index;
/**
* \brief Iterator to get information about Blocks and Streams
*/
typedef struct {
struct {
/**
* \brief Pointer to Stream Flags
*
* This is NULL if Stream Flags have not been set for
* this Stream with lzma_index_stream_flags().
*/
const lzma_stream_flags *flags;
const void *reserved_ptr1;
const void *reserved_ptr2;
const void *reserved_ptr3;
/**
* \brief Stream number in the lzma_index
*
* The first Stream is 1.
*/
lzma_vli number;
/**
* \brief Number of Blocks in the Stream
*
* If this is zero, the block structure below has
* undefined values.
*/
lzma_vli block_count;
/**
* \brief Compressed start offset of this Stream
*
* The offset is relative to the beginning of the lzma_index
* (i.e. usually the beginning of the .xz file).
*/
lzma_vli compressed_offset;
/**
* \brief Uncompressed start offset of this Stream
*
* The offset is relative to the beginning of the lzma_index
* (i.e. usually the beginning of the .xz file).
*/
lzma_vli uncompressed_offset;
/**
* \brief Compressed size of this Stream
*
* This includes all headers except the possible
* Stream Padding after this Stream.
*/
lzma_vli compressed_size;
/**
* \brief Uncompressed size of this Stream
*/
lzma_vli uncompressed_size;
/**
* \brief Size of Stream Padding after this Stream
*
* If it hasn't been set with lzma_index_stream_padding(),
* this defaults to zero. Stream Padding is always
* a multiple of four bytes.
*/
lzma_vli padding;
lzma_vli reserved_vli1;
lzma_vli reserved_vli2;
lzma_vli reserved_vli3;
lzma_vli reserved_vli4;
} stream;
struct {
/**
* \brief Block number in the file
*
* The first Block is 1.
*/
lzma_vli number_in_file;
/**
* \brief Compressed start offset of this Block
*
* This offset is relative to the beginning of the
* lzma_index (i.e. usually the beginning of the .xz file).
* Normally this is where you should seek in the .xz file
* to start decompressing this Block.
*/
lzma_vli compressed_file_offset;
/**
* \brief Uncompressed start offset of this Block
*
* This offset is relative to the beginning of the lzma_index
* (i.e. usually the beginning of the .xz file).
*
* When doing random-access reading, it is possible that
* the target offset is not exactly at Block boundary. One
* will need to compare the target offset against
* uncompressed_file_offset or uncompressed_stream_offset,
* and possibly decode and throw away some amount of data
* before reaching the target offset.
*/
lzma_vli uncompressed_file_offset;
/**
* \brief Block number in this Stream
*
* The first Block is 1.
*/
lzma_vli number_in_stream;
/**
* \brief Compressed start offset of this Block
*
* This offset is relative to the beginning of the Stream
* containing this Block.
*/
lzma_vli compressed_stream_offset;
/**
* \brief Uncompressed start offset of this Block
*
* This offset is relative to the beginning of the Stream
* containing this Block.
*/
lzma_vli uncompressed_stream_offset;
/**
* \brief Uncompressed size of this Block
*
* You should pass this to the Block decoder if you will
* decode this Block. It will allow the Block decoder to
* validate the uncompressed size.
*/
lzma_vli uncompressed_size;
/**
* \brief Unpadded size of this Block
*
* You should pass this to the Block decoder if you will
* decode this Block. It will allow the Block decoder to
* validate the unpadded size.
*/
lzma_vli unpadded_size;
/**
* \brief Total compressed size
*
* This includes all headers and padding in this Block.
* This is useful if you need to know how many bytes
* the Block decoder will actually read.
*/
lzma_vli total_size;
lzma_vli reserved_vli1;
lzma_vli reserved_vli2;
lzma_vli reserved_vli3;
lzma_vli reserved_vli4;
const void *reserved_ptr1;
const void *reserved_ptr2;
const void *reserved_ptr3;
const void *reserved_ptr4;
} block;
/*
* Internal data which is used to store the state of the iterator.
* The exact format may vary between liblzma versions, so don't
* touch these in any way.
*/
union {
const void *p;
size_t s;
lzma_vli v;
} internal[6];
} lzma_index_iter;
/**
* \brief Operation mode for lzma_index_iter_next()
*/
typedef enum {
LZMA_INDEX_ITER_ANY = 0,
/**<
* \brief Get the next Block or Stream
*
* Go to the next Block if the current Stream has at least
* one Block left. Otherwise go to the next Stream even if
* it has no Blocks. If the Stream has no Blocks
* (lzma_index_iter.stream.block_count == 0),
* lzma_index_iter.block will have undefined values.
*/
LZMA_INDEX_ITER_STREAM = 1,
/**<
* \brief Get the next Stream
*
* Go to the next Stream even if the current Stream has
* unread Blocks left. If the next Stream has at least one
* Block, the iterator will point to the first Block.
* If there are no Blocks, lzma_index_iter.block will have
* undefined values.
*/
LZMA_INDEX_ITER_BLOCK = 2,
/**<
* \brief Get the next Block
*
* Go to the next Block if the current Stream has at least
* one Block left. If the current Stream has no Blocks left,
* the next Stream with at least one Block is located and
* the iterator will be made to point to the first Block of
* that Stream.
*/
LZMA_INDEX_ITER_NONEMPTY_BLOCK = 3
/**<
* \brief Get the next non-empty Block
*
* This is like LZMA_INDEX_ITER_BLOCK except that it will
* skip Blocks whose Uncompressed Size is zero.
*/
} lzma_index_iter_mode;
/**
* \brief Calculate memory usage of lzma_index
*
* On disk, the size of the Index field depends on both the number of Records
* stored and how big values the Records store (due to variable-length integer
* encoding). When the Index is kept in lzma_index structure, the memory usage
* depends only on the number of Records/Blocks stored in the Index(es), and
* in case of concatenated lzma_indexes, the number of Streams. The size in
* RAM is almost always significantly bigger than in the encoded form on disk.
*
* This function calculates an approximate amount of memory needed hold
* the given number of Streams and Blocks in lzma_index structure. This
* value may vary between CPU architectures and also between liblzma versions
* if the internal implementation is modified.
*/
extern LZMA_API(uint64_t) lzma_index_memusage(
lzma_vli streams, lzma_vli blocks) lzma_nothrow;
/**
* \brief Calculate the memory usage of an existing lzma_index
*
* This is a shorthand for lzma_index_memusage(lzma_index_stream_count(i),
* lzma_index_block_count(i)).
*/
extern LZMA_API(uint64_t) lzma_index_memused(const lzma_index *i)
lzma_nothrow;
/**
* \brief Allocate and initialize a new lzma_index structure
*
* \return On success, a pointer to an empty initialized lzma_index is
* returned. If allocation fails, NULL is returned.
*/
extern LZMA_API(lzma_index *) lzma_index_init(const lzma_allocator *allocator)
lzma_nothrow;
/**
* \brief Deallocate lzma_index
*
* If i is NULL, this does nothing.
*/
extern LZMA_API(void) lzma_index_end(
lzma_index *i, const lzma_allocator *allocator) lzma_nothrow;
/**
* \brief Add a new Block to lzma_index
*
* \param i Pointer to a lzma_index structure
* \param allocator Pointer to lzma_allocator, or NULL to
* use malloc()
* \param unpadded_size Unpadded Size of a Block. This can be
* calculated with lzma_block_unpadded_size()
* after encoding or decoding the Block.
* \param uncompressed_size Uncompressed Size of a Block. This can be
* taken directly from lzma_block structure
* after encoding or decoding the Block.
*
* Appending a new Block does not invalidate iterators. For example,
* if an iterator was pointing to the end of the lzma_index, after
* lzma_index_append() it is possible to read the next Block with
* an existing iterator.
*
* \return - LZMA_OK
* - LZMA_MEM_ERROR
* - LZMA_DATA_ERROR: Compressed or uncompressed size of the
* Stream or size of the Index field would grow too big.
* - LZMA_PROG_ERROR
*/
extern LZMA_API(lzma_ret) lzma_index_append(
lzma_index *i, const lzma_allocator *allocator,
lzma_vli unpadded_size, lzma_vli uncompressed_size)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Set the Stream Flags
*
* Set the Stream Flags of the last (and typically the only) Stream
* in lzma_index. This can be useful when reading information from the
* lzma_index, because to decode Blocks, knowing the integrity check type
* is needed.
*
* The given Stream Flags are copied into internal preallocated structure
* in the lzma_index, thus the caller doesn't need to keep the *stream_flags
* available after calling this function.
*
* \return - LZMA_OK
* - LZMA_OPTIONS_ERROR: Unsupported stream_flags->version.
* - LZMA_PROG_ERROR
*/
extern LZMA_API(lzma_ret) lzma_index_stream_flags(
lzma_index *i, const lzma_stream_flags *stream_flags)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Get the types of integrity Checks
*
* If lzma_index_stream_flags() is used to set the Stream Flags for
* every Stream, lzma_index_checks() can be used to get a bitmask to
* indicate which Check types have been used. It can be useful e.g. if
* showing the Check types to the user.
*
* The bitmask is 1 << check_id, e.g. CRC32 is 1 << 1 and SHA-256 is 1 << 10.
*/
extern LZMA_API(uint32_t) lzma_index_checks(const lzma_index *i)
lzma_nothrow lzma_attr_pure;
/**
* \brief Set the amount of Stream Padding
*
* Set the amount of Stream Padding of the last (and typically the only)
* Stream in the lzma_index. This is needed when planning to do random-access
* reading within multiple concatenated Streams.
*
* By default, the amount of Stream Padding is assumed to be zero bytes.
*
* \return - LZMA_OK
* - LZMA_DATA_ERROR: The file size would grow too big.
* - LZMA_PROG_ERROR
*/
extern LZMA_API(lzma_ret) lzma_index_stream_padding(
lzma_index *i, lzma_vli stream_padding)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Get the number of Streams
*/
extern LZMA_API(lzma_vli) lzma_index_stream_count(const lzma_index *i)
lzma_nothrow lzma_attr_pure;
/**
* \brief Get the number of Blocks
*
* This returns the total number of Blocks in lzma_index. To get number
* of Blocks in individual Streams, use lzma_index_iter.
*/
extern LZMA_API(lzma_vli) lzma_index_block_count(const lzma_index *i)
lzma_nothrow lzma_attr_pure;
/**
* \brief Get the size of the Index field as bytes
*
* This is needed to verify the Backward Size field in the Stream Footer.
*/
extern LZMA_API(lzma_vli) lzma_index_size(const lzma_index *i)
lzma_nothrow lzma_attr_pure;
/**
* \brief Get the total size of the Stream
*
* If multiple lzma_indexes have been combined, this works as if the Blocks
* were in a single Stream. This is useful if you are going to combine
* Blocks from multiple Streams into a single new Stream.
*/
extern LZMA_API(lzma_vli) lzma_index_stream_size(const lzma_index *i)
lzma_nothrow lzma_attr_pure;
/**
* \brief Get the total size of the Blocks
*
* This doesn't include the Stream Header, Stream Footer, Stream Padding,
* or Index fields.
*/
extern LZMA_API(lzma_vli) lzma_index_total_size(const lzma_index *i)
lzma_nothrow lzma_attr_pure;
/**
* \brief Get the total size of the file
*
* When no lzma_indexes have been combined with lzma_index_cat() and there is
* no Stream Padding, this function is identical to lzma_index_stream_size().
* If multiple lzma_indexes have been combined, this includes also the headers
* of each separate Stream and the possible Stream Padding fields.
*/
extern LZMA_API(lzma_vli) lzma_index_file_size(const lzma_index *i)
lzma_nothrow lzma_attr_pure;
/**
* \brief Get the uncompressed size of the file
*/
extern LZMA_API(lzma_vli) lzma_index_uncompressed_size(const lzma_index *i)
lzma_nothrow lzma_attr_pure;
/**
* \brief Initialize an iterator
*
* \param iter Pointer to a lzma_index_iter structure
* \param i lzma_index to which the iterator will be associated
*
* This function associates the iterator with the given lzma_index, and calls
* lzma_index_iter_rewind() on the iterator.
*
* This function doesn't allocate any memory, thus there is no
* lzma_index_iter_end(). The iterator is valid as long as the
* associated lzma_index is valid, that is, until lzma_index_end() or
* using it as source in lzma_index_cat(). Specifically, lzma_index doesn't
* become invalid if new Blocks are added to it with lzma_index_append() or
* if it is used as the destination in lzma_index_cat().
*
* It is safe to make copies of an initialized lzma_index_iter, for example,
* to easily restart reading at some particular position.
*/
extern LZMA_API(void) lzma_index_iter_init(
lzma_index_iter *iter, const lzma_index *i) lzma_nothrow;
/**
* \brief Rewind the iterator
*
* Rewind the iterator so that next call to lzma_index_iter_next() will
* return the first Block or Stream.
*/
extern LZMA_API(void) lzma_index_iter_rewind(lzma_index_iter *iter)
lzma_nothrow;
/**
* \brief Get the next Block or Stream
*
* \param iter Iterator initialized with lzma_index_iter_init()
* \param mode Specify what kind of information the caller wants
* to get. See lzma_index_iter_mode for details.
*
* \return If next Block or Stream matching the mode was found, *iter
* is updated and this function returns false. If no Block or
* Stream matching the mode is found, *iter is not modified
* and this function returns true. If mode is set to an unknown
* value, *iter is not modified and this function returns true.
*/
extern LZMA_API(lzma_bool) lzma_index_iter_next(
lzma_index_iter *iter, lzma_index_iter_mode mode)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Locate a Block
*
* If it is possible to seek in the .xz file, it is possible to parse
* the Index field(s) and use lzma_index_iter_locate() to do random-access
* reading with granularity of Block size.
*
* \param iter Iterator that was earlier initialized with
* lzma_index_iter_init().
* \param target Uncompressed target offset which the caller would
* like to locate from the Stream
*
* If the target is smaller than the uncompressed size of the Stream (can be
* checked with lzma_index_uncompressed_size()):
* - Information about the Stream and Block containing the requested
* uncompressed offset is stored into *iter.
* - Internal state of the iterator is adjusted so that
* lzma_index_iter_next() can be used to read subsequent Blocks or Streams.
* - This function returns false.
*
* If target is greater than the uncompressed size of the Stream, *iter
* is not modified, and this function returns true.
*/
extern LZMA_API(lzma_bool) lzma_index_iter_locate(
lzma_index_iter *iter, lzma_vli target) lzma_nothrow;
/**
* \brief Concatenate lzma_indexes
*
* Concatenating lzma_indexes is useful when doing random-access reading in
* multi-Stream .xz file, or when combining multiple Streams into single
* Stream.
*
* \param dest lzma_index after which src is appended
* \param src lzma_index to be appended after dest. If this
* function succeeds, the memory allocated for src
* is freed or moved to be part of dest, and all
* iterators pointing to src will become invalid.
* \param allocator Custom memory allocator; can be NULL to use
* malloc() and free().
*
* \return - LZMA_OK: lzma_indexes were concatenated successfully.
* src is now a dangling pointer.
* - LZMA_DATA_ERROR: *dest would grow too big.
* - LZMA_MEM_ERROR
* - LZMA_PROG_ERROR
*/
extern LZMA_API(lzma_ret) lzma_index_cat(lzma_index *dest, lzma_index *src,
const lzma_allocator *allocator)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Duplicate lzma_index
*
* \return A copy of the lzma_index, or NULL if memory allocation failed.
*/
extern LZMA_API(lzma_index *) lzma_index_dup(
const lzma_index *i, const lzma_allocator *allocator)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Initialize .xz Index encoder
*
* \param strm Pointer to properly prepared lzma_stream
* \param i Pointer to lzma_index which should be encoded.
*
* The valid `action' values for lzma_code() are LZMA_RUN and LZMA_FINISH.
* It is enough to use only one of them (you can choose freely).
*
* \return - LZMA_OK: Initialization succeeded, continue with lzma_code().
* - LZMA_MEM_ERROR
* - LZMA_PROG_ERROR
*/
extern LZMA_API(lzma_ret) lzma_index_encoder(
lzma_stream *strm, const lzma_index *i)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Initialize .xz Index decoder
*
* \param strm Pointer to properly prepared lzma_stream
* \param i The decoded Index will be made available via
* this pointer. Initially this function will
* set *i to NULL (the old value is ignored). If
* decoding succeeds (lzma_code() returns
* LZMA_STREAM_END), *i will be set to point
* to a new lzma_index, which the application
* has to later free with lzma_index_end().
* \param memlimit How much memory the resulting lzma_index is
* allowed to require. liblzma 5.2.3 and earlier
* don't allow 0 here and return LZMA_PROG_ERROR;
* later versions treat 0 as if 1 had been specified.
*
* Valid `action' arguments to lzma_code() are LZMA_RUN and LZMA_FINISH.
* There is no need to use LZMA_FINISH, but it's allowed because it may
* simplify certain types of applications.
*
* \return - LZMA_OK: Initialization succeeded, continue with lzma_code().
* - LZMA_MEM_ERROR
* - LZMA_PROG_ERROR
*
* liblzma 5.2.3 and older list also LZMA_MEMLIMIT_ERROR here
* but that error code has never been possible from this
* initialization function.
*/
extern LZMA_API(lzma_ret) lzma_index_decoder(
lzma_stream *strm, lzma_index **i, uint64_t memlimit)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Single-call .xz Index encoder
*
* \param i lzma_index to be encoded
* \param out Beginning of the output buffer
* \param out_pos The next byte will be written to out[*out_pos].
* *out_pos is updated only if encoding succeeds.
* \param out_size Size of the out buffer; the first byte into
* which no data is written to is out[out_size].
*
* \return - LZMA_OK: Encoding was successful.
* - LZMA_BUF_ERROR: Output buffer is too small. Use
* lzma_index_size() to find out how much output
* space is needed.
* - LZMA_PROG_ERROR
*
* \note This function doesn't take allocator argument since all
* the internal data is allocated on stack.
*/
extern LZMA_API(lzma_ret) lzma_index_buffer_encode(const lzma_index *i,
uint8_t *out, size_t *out_pos, size_t out_size) lzma_nothrow;
/**
* \brief Single-call .xz Index decoder
*
* \param i If decoding succeeds, *i will point to a new
* lzma_index, which the application has to
* later free with lzma_index_end(). If an error
* occurs, *i will be NULL. The old value of *i
* is always ignored and thus doesn't need to be
* initialized by the caller.
* \param memlimit Pointer to how much memory the resulting
* lzma_index is allowed to require. The value
* pointed by this pointer is modified if and only
* if LZMA_MEMLIMIT_ERROR is returned.
* \param allocator Pointer to lzma_allocator, or NULL to use malloc()
* \param in Beginning of the input buffer
* \param in_pos The next byte will be read from in[*in_pos].
* *in_pos is updated only if decoding succeeds.
* \param in_size Size of the input buffer; the first byte that
* won't be read is in[in_size].
*
* \return - LZMA_OK: Decoding was successful.
* - LZMA_MEM_ERROR
* - LZMA_MEMLIMIT_ERROR: Memory usage limit was reached.
* The minimum required memlimit value was stored to *memlimit.
* - LZMA_DATA_ERROR
* - LZMA_PROG_ERROR
*/
extern LZMA_API(lzma_ret) lzma_index_buffer_decode(lzma_index **i,
uint64_t *memlimit, const lzma_allocator *allocator,
const uint8_t *in, size_t *in_pos, size_t in_size)
lzma_nothrow;

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/**
* \file lzma/index_hash.h
* \brief Validate Index by using a hash function
*
* Hashing makes it possible to use constant amount of memory to validate
* Index of arbitrary size.
*/
/*
* Author: Lasse Collin
*
* This file has been put into the public domain.
* You can do whatever you want with this file.
*
* See ../lzma.h for information about liblzma as a whole.
*/
#ifndef LZMA_H_INTERNAL
# error Never include this file directly. Use <lzma.h> instead.
#endif
/**
* \brief Opaque data type to hold the Index hash
*/
typedef struct lzma_index_hash_s lzma_index_hash;
/**
* \brief Allocate and initialize a new lzma_index_hash structure
*
* If index_hash is NULL, a new lzma_index_hash structure is allocated,
* initialized, and a pointer to it returned. If allocation fails, NULL
* is returned.
*
* If index_hash is non-NULL, it is reinitialized and the same pointer
* returned. In this case, return value cannot be NULL or a different
* pointer than the index_hash that was given as an argument.
*/
extern LZMA_API(lzma_index_hash *) lzma_index_hash_init(
lzma_index_hash *index_hash, const lzma_allocator *allocator)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Deallocate lzma_index_hash structure
*/
extern LZMA_API(void) lzma_index_hash_end(
lzma_index_hash *index_hash, const lzma_allocator *allocator)
lzma_nothrow;
/**
* \brief Add a new Record to an Index hash
*
* \param index Pointer to a lzma_index_hash structure
* \param unpadded_size Unpadded Size of a Block
* \param uncompressed_size Uncompressed Size of a Block
*
* \return - LZMA_OK
* - LZMA_DATA_ERROR: Compressed or uncompressed size of the
* Stream or size of the Index field would grow too big.
* - LZMA_PROG_ERROR: Invalid arguments or this function is being
* used when lzma_index_hash_decode() has already been used.
*/
extern LZMA_API(lzma_ret) lzma_index_hash_append(lzma_index_hash *index_hash,
lzma_vli unpadded_size, lzma_vli uncompressed_size)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Decode and validate the Index field
*
* After telling the sizes of all Blocks with lzma_index_hash_append(),
* the actual Index field is decoded with this function. Specifically,
* once decoding of the Index field has been started, no more Records
* can be added using lzma_index_hash_append().
*
* This function doesn't use lzma_stream structure to pass the input data.
* Instead, the input buffer is specified using three arguments. This is
* because it matches better the internal APIs of liblzma.
*
* \param index_hash Pointer to a lzma_index_hash structure
* \param in Pointer to the beginning of the input buffer
* \param in_pos in[*in_pos] is the next byte to process
* \param in_size in[in_size] is the first byte not to process
*
* \return - LZMA_OK: So far good, but more input is needed.
* - LZMA_STREAM_END: Index decoded successfully and it matches
* the Records given with lzma_index_hash_append().
* - LZMA_DATA_ERROR: Index is corrupt or doesn't match the
* information given with lzma_index_hash_append().
* - LZMA_BUF_ERROR: Cannot progress because *in_pos >= in_size.
* - LZMA_PROG_ERROR
*/
extern LZMA_API(lzma_ret) lzma_index_hash_decode(lzma_index_hash *index_hash,
const uint8_t *in, size_t *in_pos, size_t in_size)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Get the size of the Index field as bytes
*
* This is needed to verify the Backward Size field in the Stream Footer.
*/
extern LZMA_API(lzma_vli) lzma_index_hash_size(
const lzma_index_hash *index_hash)
lzma_nothrow lzma_attr_pure;

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/**
* \file lzma/lzma12.h
* \brief LZMA1 and LZMA2 filters
*/
/*
* Author: Lasse Collin
*
* This file has been put into the public domain.
* You can do whatever you want with this file.
*
* See ../lzma.h for information about liblzma as a whole.
*/
#ifndef LZMA_H_INTERNAL
# error Never include this file directly. Use <lzma.h> instead.
#endif
/**
* \brief LZMA1 Filter ID
*
* LZMA1 is the very same thing as what was called just LZMA in LZMA Utils,
* 7-Zip, and LZMA SDK. It's called LZMA1 here to prevent developers from
* accidentally using LZMA when they actually want LZMA2.
*
* LZMA1 shouldn't be used for new applications unless you _really_ know
* what you are doing. LZMA2 is almost always a better choice.
*/
#define LZMA_FILTER_LZMA1 LZMA_VLI_C(0x4000000000000001)
/**
* \brief LZMA2 Filter ID
*
* Usually you want this instead of LZMA1. Compared to LZMA1, LZMA2 adds
* support for LZMA_SYNC_FLUSH, uncompressed chunks (smaller expansion
* when trying to compress uncompressible data), possibility to change
* lc/lp/pb in the middle of encoding, and some other internal improvements.
*/
#define LZMA_FILTER_LZMA2 LZMA_VLI_C(0x21)
/**
* \brief Match finders
*
* Match finder has major effect on both speed and compression ratio.
* Usually hash chains are faster than binary trees.
*
* If you will use LZMA_SYNC_FLUSH often, the hash chains may be a better
* choice, because binary trees get much higher compression ratio penalty
* with LZMA_SYNC_FLUSH.
*
* The memory usage formulas are only rough estimates, which are closest to
* reality when dict_size is a power of two. The formulas are more complex
* in reality, and can also change a little between liblzma versions. Use
* lzma_raw_encoder_memusage() to get more accurate estimate of memory usage.
*/
typedef enum {
LZMA_MF_HC3 = 0x03,
/**<
* \brief Hash Chain with 2- and 3-byte hashing
*
* Minimum nice_len: 3
*
* Memory usage:
* - dict_size <= 16 MiB: dict_size * 7.5
* - dict_size > 16 MiB: dict_size * 5.5 + 64 MiB
*/
LZMA_MF_HC4 = 0x04,
/**<
* \brief Hash Chain with 2-, 3-, and 4-byte hashing
*
* Minimum nice_len: 4
*
* Memory usage:
* - dict_size <= 32 MiB: dict_size * 7.5
* - dict_size > 32 MiB: dict_size * 6.5
*/
LZMA_MF_BT2 = 0x12,
/**<
* \brief Binary Tree with 2-byte hashing
*
* Minimum nice_len: 2
*
* Memory usage: dict_size * 9.5
*/
LZMA_MF_BT3 = 0x13,
/**<
* \brief Binary Tree with 2- and 3-byte hashing
*
* Minimum nice_len: 3
*
* Memory usage:
* - dict_size <= 16 MiB: dict_size * 11.5
* - dict_size > 16 MiB: dict_size * 9.5 + 64 MiB
*/
LZMA_MF_BT4 = 0x14
/**<
* \brief Binary Tree with 2-, 3-, and 4-byte hashing
*
* Minimum nice_len: 4
*
* Memory usage:
* - dict_size <= 32 MiB: dict_size * 11.5
* - dict_size > 32 MiB: dict_size * 10.5
*/
} lzma_match_finder;
/**
* \brief Test if given match finder is supported
*
* Return true if the given match finder is supported by this liblzma build.
* Otherwise false is returned. It is safe to call this with a value that
* isn't listed in lzma_match_finder enumeration; the return value will be
* false.
*
* There is no way to list which match finders are available in this
* particular liblzma version and build. It would be useless, because
* a new match finder, which the application developer wasn't aware,
* could require giving additional options to the encoder that the older
* match finders don't need.
*/
extern LZMA_API(lzma_bool) lzma_mf_is_supported(lzma_match_finder match_finder)
lzma_nothrow lzma_attr_const;
/**
* \brief Compression modes
*
* This selects the function used to analyze the data produced by the match
* finder.
*/
typedef enum {
LZMA_MODE_FAST = 1,
/**<
* \brief Fast compression
*
* Fast mode is usually at its best when combined with
* a hash chain match finder.
*/
LZMA_MODE_NORMAL = 2
/**<
* \brief Normal compression
*
* This is usually notably slower than fast mode. Use this
* together with binary tree match finders to expose the
* full potential of the LZMA1 or LZMA2 encoder.
*/
} lzma_mode;
/**
* \brief Test if given compression mode is supported
*
* Return true if the given compression mode is supported by this liblzma
* build. Otherwise false is returned. It is safe to call this with a value
* that isn't listed in lzma_mode enumeration; the return value will be false.
*
* There is no way to list which modes are available in this particular
* liblzma version and build. It would be useless, because a new compression
* mode, which the application developer wasn't aware, could require giving
* additional options to the encoder that the older modes don't need.
*/
extern LZMA_API(lzma_bool) lzma_mode_is_supported(lzma_mode mode)
lzma_nothrow lzma_attr_const;
/**
* \brief Options specific to the LZMA1 and LZMA2 filters
*
* Since LZMA1 and LZMA2 share most of the code, it's simplest to share
* the options structure too. For encoding, all but the reserved variables
* need to be initialized unless specifically mentioned otherwise.
* lzma_lzma_preset() can be used to get a good starting point.
*
* For raw decoding, both LZMA1 and LZMA2 need dict_size, preset_dict, and
* preset_dict_size (if preset_dict != NULL). LZMA1 needs also lc, lp, and pb.
*/
typedef struct {
/**
* \brief Dictionary size in bytes
*
* Dictionary size indicates how many bytes of the recently processed
* uncompressed data is kept in memory. One method to reduce size of
* the uncompressed data is to store distance-length pairs, which
* indicate what data to repeat from the dictionary buffer. Thus,
* the bigger the dictionary, the better the compression ratio
* usually is.
*
* Maximum size of the dictionary depends on multiple things:
* - Memory usage limit
* - Available address space (not a problem on 64-bit systems)
* - Selected match finder (encoder only)
*
* Currently the maximum dictionary size for encoding is 1.5 GiB
* (i.e. (UINT32_C(1) << 30) + (UINT32_C(1) << 29)) even on 64-bit
* systems for certain match finder implementation reasons. In the
* future, there may be match finders that support bigger
* dictionaries.
*
* Decoder already supports dictionaries up to 4 GiB - 1 B (i.e.
* UINT32_MAX), so increasing the maximum dictionary size of the
* encoder won't cause problems for old decoders.
*
* Because extremely small dictionaries sizes would have unneeded
* overhead in the decoder, the minimum dictionary size is 4096 bytes.
*
* \note When decoding, too big dictionary does no other harm
* than wasting memory.
*/
uint32_t dict_size;
# define LZMA_DICT_SIZE_MIN UINT32_C(4096)
# define LZMA_DICT_SIZE_DEFAULT (UINT32_C(1) << 23)
/**
* \brief Pointer to an initial dictionary
*
* It is possible to initialize the LZ77 history window using
* a preset dictionary. It is useful when compressing many
* similar, relatively small chunks of data independently from
* each other. The preset dictionary should contain typical
* strings that occur in the files being compressed. The most
* probable strings should be near the end of the preset dictionary.
*
* This feature should be used only in special situations. For
* now, it works correctly only with raw encoding and decoding.
* Currently none of the container formats supported by
* liblzma allow preset dictionary when decoding, thus if
* you create a .xz or .lzma file with preset dictionary, it
* cannot be decoded with the regular decoder functions. In the
* future, the .xz format will likely get support for preset
* dictionary though.
*/
const uint8_t *preset_dict;
/**
* \brief Size of the preset dictionary
*
* Specifies the size of the preset dictionary. If the size is
* bigger than dict_size, only the last dict_size bytes are
* processed.
*
* This variable is read only when preset_dict is not NULL.
* If preset_dict is not NULL but preset_dict_size is zero,
* no preset dictionary is used (identical to only setting
* preset_dict to NULL).
*/
uint32_t preset_dict_size;
/**
* \brief Number of literal context bits
*
* How many of the highest bits of the previous uncompressed
* eight-bit byte (also known as `literal') are taken into
* account when predicting the bits of the next literal.
*
* E.g. in typical English text, an upper-case letter is
* often followed by a lower-case letter, and a lower-case
* letter is usually followed by another lower-case letter.
* In the US-ASCII character set, the highest three bits are 010
* for upper-case letters and 011 for lower-case letters.
* When lc is at least 3, the literal coding can take advantage of
* this property in the uncompressed data.
*
* There is a limit that applies to literal context bits and literal
* position bits together: lc + lp <= 4. Without this limit the
* decoding could become very slow, which could have security related
* results in some cases like email servers doing virus scanning.
* This limit also simplifies the internal implementation in liblzma.
*
* There may be LZMA1 streams that have lc + lp > 4 (maximum possible
* lc would be 8). It is not possible to decode such streams with
* liblzma.
*/
uint32_t lc;
# define LZMA_LCLP_MIN 0
# define LZMA_LCLP_MAX 4
# define LZMA_LC_DEFAULT 3
/**
* \brief Number of literal position bits
*
* lp affects what kind of alignment in the uncompressed data is
* assumed when encoding literals. A literal is a single 8-bit byte.
* See pb below for more information about alignment.
*/
uint32_t lp;
# define LZMA_LP_DEFAULT 0
/**
* \brief Number of position bits
*
* pb affects what kind of alignment in the uncompressed data is
* assumed in general. The default means four-byte alignment
* (2^ pb =2^2=4), which is often a good choice when there's
* no better guess.
*
* When the aligment is known, setting pb accordingly may reduce
* the file size a little. E.g. with text files having one-byte
* alignment (US-ASCII, ISO-8859-*, UTF-8), setting pb=0 can
* improve compression slightly. For UTF-16 text, pb=1 is a good
* choice. If the alignment is an odd number like 3 bytes, pb=0
* might be the best choice.
*
* Even though the assumed alignment can be adjusted with pb and
* lp, LZMA1 and LZMA2 still slightly favor 16-byte alignment.
* It might be worth taking into account when designing file formats
* that are likely to be often compressed with LZMA1 or LZMA2.
*/
uint32_t pb;
# define LZMA_PB_MIN 0
# define LZMA_PB_MAX 4
# define LZMA_PB_DEFAULT 2
/** Compression mode */
lzma_mode mode;
/**
* \brief Nice length of a match
*
* This determines how many bytes the encoder compares from the match
* candidates when looking for the best match. Once a match of at
* least nice_len bytes long is found, the encoder stops looking for
* better candidates and encodes the match. (Naturally, if the found
* match is actually longer than nice_len, the actual length is
* encoded; it's not truncated to nice_len.)
*
* Bigger values usually increase the compression ratio and
* compression time. For most files, 32 to 128 is a good value,
* which gives very good compression ratio at good speed.
*
* The exact minimum value depends on the match finder. The maximum
* is 273, which is the maximum length of a match that LZMA1 and
* LZMA2 can encode.
*/
uint32_t nice_len;
/** Match finder ID */
lzma_match_finder mf;
/**
* \brief Maximum search depth in the match finder
*
* For every input byte, match finder searches through the hash chain
* or binary tree in a loop, each iteration going one step deeper in
* the chain or tree. The searching stops if
* - a match of at least nice_len bytes long is found;
* - all match candidates from the hash chain or binary tree have
* been checked; or
* - maximum search depth is reached.
*
* Maximum search depth is needed to prevent the match finder from
* wasting too much time in case there are lots of short match
* candidates. On the other hand, stopping the search before all
* candidates have been checked can reduce compression ratio.
*
* Setting depth to zero tells liblzma to use an automatic default
* value, that depends on the selected match finder and nice_len.
* The default is in the range [4, 200] or so (it may vary between
* liblzma versions).
*
* Using a bigger depth value than the default can increase
* compression ratio in some cases. There is no strict maximum value,
* but high values (thousands or millions) should be used with care:
* the encoder could remain fast enough with typical input, but
* malicious input could cause the match finder to slow down
* dramatically, possibly creating a denial of service attack.
*/
uint32_t depth;
/*
* Reserved space to allow possible future extensions without
* breaking the ABI. You should not touch these, because the names
* of these variables may change. These are and will never be used
* with the currently supported options, so it is safe to leave these
* uninitialized.
*/
uint32_t reserved_int1;
uint32_t reserved_int2;
uint32_t reserved_int3;
uint32_t reserved_int4;
uint32_t reserved_int5;
uint32_t reserved_int6;
uint32_t reserved_int7;
uint32_t reserved_int8;
lzma_reserved_enum reserved_enum1;
lzma_reserved_enum reserved_enum2;
lzma_reserved_enum reserved_enum3;
lzma_reserved_enum reserved_enum4;
void *reserved_ptr1;
void *reserved_ptr2;
} lzma_options_lzma;
/**
* \brief Set a compression preset to lzma_options_lzma structure
*
* 0 is the fastest and 9 is the slowest. These match the switches -0 .. -9
* of the xz command line tool. In addition, it is possible to bitwise-or
* flags to the preset. Currently only LZMA_PRESET_EXTREME is supported.
* The flags are defined in container.h, because the flags are used also
* with lzma_easy_encoder().
*
* The preset values are subject to changes between liblzma versions.
*
* This function is available only if LZMA1 or LZMA2 encoder has been enabled
* when building liblzma.
*
* \return On success, false is returned. If the preset is not
* supported, true is returned.
*/
extern LZMA_API(lzma_bool) lzma_lzma_preset(
lzma_options_lzma *options, uint32_t preset) lzma_nothrow;

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/**
* \file lzma/stream_flags.h
* \brief .xz Stream Header and Stream Footer encoder and decoder
*/
/*
* Author: Lasse Collin
*
* This file has been put into the public domain.
* You can do whatever you want with this file.
*
* See ../lzma.h for information about liblzma as a whole.
*/
#ifndef LZMA_H_INTERNAL
# error Never include this file directly. Use <lzma.h> instead.
#endif
/**
* \brief Size of Stream Header and Stream Footer
*
* Stream Header and Stream Footer have the same size and they are not
* going to change even if a newer version of the .xz file format is
* developed in future.
*/
#define LZMA_STREAM_HEADER_SIZE 12
/**
* \brief Options for encoding/decoding Stream Header and Stream Footer
*/
typedef struct {
/**
* \brief Stream Flags format version
*
* To prevent API and ABI breakages if new features are needed in
* Stream Header or Stream Footer, a version number is used to
* indicate which fields in this structure are in use. For now,
* version must always be zero. With non-zero version, the
* lzma_stream_header_encode() and lzma_stream_footer_encode()
* will return LZMA_OPTIONS_ERROR.
*
* lzma_stream_header_decode() and lzma_stream_footer_decode()
* will always set this to the lowest value that supports all the
* features indicated by the Stream Flags field. The application
* must check that the version number set by the decoding functions
* is supported by the application. Otherwise it is possible that
* the application will decode the Stream incorrectly.
*/
uint32_t version;
/**
* \brief Backward Size
*
* Backward Size must be a multiple of four bytes. In this Stream
* format version, Backward Size is the size of the Index field.
*
* Backward Size isn't actually part of the Stream Flags field, but
* it is convenient to include in this structure anyway. Backward
* Size is present only in the Stream Footer. There is no need to
* initialize backward_size when encoding Stream Header.
*
* lzma_stream_header_decode() always sets backward_size to
* LZMA_VLI_UNKNOWN so that it is convenient to use
* lzma_stream_flags_compare() when both Stream Header and Stream
* Footer have been decoded.
*/
lzma_vli backward_size;
# define LZMA_BACKWARD_SIZE_MIN 4
# define LZMA_BACKWARD_SIZE_MAX (LZMA_VLI_C(1) << 34)
/**
* \brief Check ID
*
* This indicates the type of the integrity check calculated from
* uncompressed data.
*/
lzma_check check;
/*
* Reserved space to allow possible future extensions without
* breaking the ABI. You should not touch these, because the
* names of these variables may change.
*
* (We will never be able to use all of these since Stream Flags
* is just two bytes plus Backward Size of four bytes. But it's
* nice to have the proper types when they are needed.)
*/
lzma_reserved_enum reserved_enum1;
lzma_reserved_enum reserved_enum2;
lzma_reserved_enum reserved_enum3;
lzma_reserved_enum reserved_enum4;
lzma_bool reserved_bool1;
lzma_bool reserved_bool2;
lzma_bool reserved_bool3;
lzma_bool reserved_bool4;
lzma_bool reserved_bool5;
lzma_bool reserved_bool6;
lzma_bool reserved_bool7;
lzma_bool reserved_bool8;
uint32_t reserved_int1;
uint32_t reserved_int2;
} lzma_stream_flags;
/**
* \brief Encode Stream Header
*
* \param options Stream Header options to be encoded.
* options->backward_size is ignored and doesn't
* need to be initialized.
* \param out Beginning of the output buffer of
* LZMA_STREAM_HEADER_SIZE bytes.
*
* \return - LZMA_OK: Encoding was successful.
* - LZMA_OPTIONS_ERROR: options->version is not supported by
* this liblzma version.
* - LZMA_PROG_ERROR: Invalid options.
*/
extern LZMA_API(lzma_ret) lzma_stream_header_encode(
const lzma_stream_flags *options, uint8_t *out)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Encode Stream Footer
*
* \param options Stream Footer options to be encoded.
* \param out Beginning of the output buffer of
* LZMA_STREAM_HEADER_SIZE bytes.
*
* \return - LZMA_OK: Encoding was successful.
* - LZMA_OPTIONS_ERROR: options->version is not supported by
* this liblzma version.
* - LZMA_PROG_ERROR: Invalid options.
*/
extern LZMA_API(lzma_ret) lzma_stream_footer_encode(
const lzma_stream_flags *options, uint8_t *out)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Decode Stream Header
*
* \param options Target for the decoded Stream Header options.
* \param in Beginning of the input buffer of
* LZMA_STREAM_HEADER_SIZE bytes.
*
* options->backward_size is always set to LZMA_VLI_UNKNOWN. This is to
* help comparing Stream Flags from Stream Header and Stream Footer with
* lzma_stream_flags_compare().
*
* \return - LZMA_OK: Decoding was successful.
* - LZMA_FORMAT_ERROR: Magic bytes don't match, thus the given
* buffer cannot be Stream Header.
* - LZMA_DATA_ERROR: CRC32 doesn't match, thus the header
* is corrupt.
* - LZMA_OPTIONS_ERROR: Unsupported options are present
* in the header.
*
* \note When decoding .xz files that contain multiple Streams, it may
* make sense to print "file format not recognized" only if
* decoding of the Stream Header of the _first_ Stream gives
* LZMA_FORMAT_ERROR. If non-first Stream Header gives
* LZMA_FORMAT_ERROR, the message used for LZMA_DATA_ERROR is
* probably more appropriate.
*
* For example, Stream decoder in liblzma uses LZMA_DATA_ERROR if
* LZMA_FORMAT_ERROR is returned by lzma_stream_header_decode()
* when decoding non-first Stream.
*/
extern LZMA_API(lzma_ret) lzma_stream_header_decode(
lzma_stream_flags *options, const uint8_t *in)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Decode Stream Footer
*
* \param options Target for the decoded Stream Header options.
* \param in Beginning of the input buffer of
* LZMA_STREAM_HEADER_SIZE bytes.
*
* \return - LZMA_OK: Decoding was successful.
* - LZMA_FORMAT_ERROR: Magic bytes don't match, thus the given
* buffer cannot be Stream Footer.
* - LZMA_DATA_ERROR: CRC32 doesn't match, thus the Stream Footer
* is corrupt.
* - LZMA_OPTIONS_ERROR: Unsupported options are present
* in Stream Footer.
*
* \note If Stream Header was already decoded successfully, but
* decoding Stream Footer returns LZMA_FORMAT_ERROR, the
* application should probably report some other error message
* than "file format not recognized", since the file more likely
* is corrupt (possibly truncated). Stream decoder in liblzma
* uses LZMA_DATA_ERROR in this situation.
*/
extern LZMA_API(lzma_ret) lzma_stream_footer_decode(
lzma_stream_flags *options, const uint8_t *in)
lzma_nothrow lzma_attr_warn_unused_result;
/**
* \brief Compare two lzma_stream_flags structures
*
* backward_size values are compared only if both are not
* LZMA_VLI_UNKNOWN.
*
* \return - LZMA_OK: Both are equal. If either had backward_size set
* to LZMA_VLI_UNKNOWN, backward_size values were not
* compared or validated.
* - LZMA_DATA_ERROR: The structures differ.
* - LZMA_OPTIONS_ERROR: version in either structure is greater
* than the maximum supported version (currently zero).
* - LZMA_PROG_ERROR: Invalid value, e.g. invalid check or
* backward_size.
*/
extern LZMA_API(lzma_ret) lzma_stream_flags_compare(
const lzma_stream_flags *a, const lzma_stream_flags *b)
lzma_nothrow lzma_attr_pure;

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/**
* \file lzma/version.h
* \brief Version number
*/
/*
* Author: Lasse Collin
*
* This file has been put into the public domain.
* You can do whatever you want with this file.
*
* See ../lzma.h for information about liblzma as a whole.
*/
#ifndef LZMA_H_INTERNAL
# error Never include this file directly. Use <lzma.h> instead.
#endif
/*
* Version number split into components
*/
#define LZMA_VERSION_MAJOR 5
#define LZMA_VERSION_MINOR 2
#define LZMA_VERSION_PATCH 4
#define LZMA_VERSION_STABILITY LZMA_VERSION_STABILITY_STABLE
#ifndef LZMA_VERSION_COMMIT
# define LZMA_VERSION_COMMIT ""
#endif
/*
* Map symbolic stability levels to integers.
*/
#define LZMA_VERSION_STABILITY_ALPHA 0
#define LZMA_VERSION_STABILITY_BETA 1
#define LZMA_VERSION_STABILITY_STABLE 2
/**
* \brief Compile-time version number
*
* The version number is of format xyyyzzzs where
* - x = major
* - yyy = minor
* - zzz = revision
* - s indicates stability: 0 = alpha, 1 = beta, 2 = stable
*
* The same xyyyzzz triplet is never reused with different stability levels.
* For example, if 5.1.0alpha has been released, there will never be 5.1.0beta
* or 5.1.0 stable.
*
* \note The version number of liblzma has nothing to with
* the version number of Igor Pavlov's LZMA SDK.
*/
#define LZMA_VERSION (LZMA_VERSION_MAJOR * UINT32_C(10000000) \
+ LZMA_VERSION_MINOR * UINT32_C(10000) \
+ LZMA_VERSION_PATCH * UINT32_C(10) \
+ LZMA_VERSION_STABILITY)
/*
* Macros to construct the compile-time version string
*/
#if LZMA_VERSION_STABILITY == LZMA_VERSION_STABILITY_ALPHA
# define LZMA_VERSION_STABILITY_STRING "alpha"
#elif LZMA_VERSION_STABILITY == LZMA_VERSION_STABILITY_BETA
# define LZMA_VERSION_STABILITY_STRING "beta"
#elif LZMA_VERSION_STABILITY == LZMA_VERSION_STABILITY_STABLE
# define LZMA_VERSION_STABILITY_STRING ""
#else
# error Incorrect LZMA_VERSION_STABILITY
#endif
#define LZMA_VERSION_STRING_C_(major, minor, patch, stability, commit) \
#major "." #minor "." #patch stability commit
#define LZMA_VERSION_STRING_C(major, minor, patch, stability, commit) \
LZMA_VERSION_STRING_C_(major, minor, patch, stability, commit)
/**
* \brief Compile-time version as a string
*
* This can be for example "4.999.5alpha", "4.999.8beta", or "5.0.0" (stable
* versions don't have any "stable" suffix). In future, a snapshot built
* from source code repository may include an additional suffix, for example
* "4.999.8beta-21-g1d92". The commit ID won't be available in numeric form
* in LZMA_VERSION macro.
*/
#define LZMA_VERSION_STRING LZMA_VERSION_STRING_C( \
LZMA_VERSION_MAJOR, LZMA_VERSION_MINOR, \
LZMA_VERSION_PATCH, LZMA_VERSION_STABILITY_STRING, \
LZMA_VERSION_COMMIT)
/* #ifndef is needed for use with windres (MinGW or Cygwin). */
#ifndef LZMA_H_INTERNAL_RC
/**
* \brief Run-time version number as an integer
*
* Return the value of LZMA_VERSION macro at the compile time of liblzma.
* This allows the application to compare if it was built against the same,
* older, or newer version of liblzma that is currently running.
*/
extern LZMA_API(uint32_t) lzma_version_number(void)
lzma_nothrow lzma_attr_const;
/**
* \brief Run-time version as a string
*
* This function may be useful if you want to display which version of
* liblzma your application is currently using.
*/
extern LZMA_API(const char *) lzma_version_string(void)
lzma_nothrow lzma_attr_const;
#endif

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/**
* \file lzma/vli.h
* \brief Variable-length integer handling
*
* In the .xz format, most integers are encoded in a variable-length
* representation, which is sometimes called little endian base-128 encoding.
* This saves space when smaller values are more likely than bigger values.
*
* The encoding scheme encodes seven bits to every byte, using minimum
* number of bytes required to represent the given value. Encodings that use
* non-minimum number of bytes are invalid, thus every integer has exactly
* one encoded representation. The maximum number of bits in a VLI is 63,
* thus the vli argument must be less than or equal to UINT64_MAX / 2. You
* should use LZMA_VLI_MAX for clarity.
*/
/*
* Author: Lasse Collin
*
* This file has been put into the public domain.
* You can do whatever you want with this file.
*
* See ../lzma.h for information about liblzma as a whole.
*/
#ifndef LZMA_H_INTERNAL
# error Never include this file directly. Use <lzma.h> instead.
#endif
/**
* \brief Maximum supported value of a variable-length integer
*/
#define LZMA_VLI_MAX (UINT64_MAX / 2)
/**
* \brief VLI value to denote that the value is unknown
*/
#define LZMA_VLI_UNKNOWN UINT64_MAX
/**
* \brief Maximum supported encoded length of variable length integers
*/
#define LZMA_VLI_BYTES_MAX 9
/**
* \brief VLI constant suffix
*/
#define LZMA_VLI_C(n) UINT64_C(n)
/**
* \brief Variable-length integer type
*
* Valid VLI values are in the range [0, LZMA_VLI_MAX]. Unknown value is
* indicated with LZMA_VLI_UNKNOWN, which is the maximum value of the
* underlaying integer type.
*
* lzma_vli will be uint64_t for the foreseeable future. If a bigger size
* is needed in the future, it is guaranteed that 2 * LZMA_VLI_MAX will
* not overflow lzma_vli. This simplifies integer overflow detection.
*/
typedef uint64_t lzma_vli;
/**
* \brief Validate a variable-length integer
*
* This is useful to test that application has given acceptable values
* for example in the uncompressed_size and compressed_size variables.
*
* \return True if the integer is representable as VLI or if it
* indicates unknown value.
*/
#define lzma_vli_is_valid(vli) \
((vli) <= LZMA_VLI_MAX || (vli) == LZMA_VLI_UNKNOWN)
/**
* \brief Encode a variable-length integer
*
* This function has two modes: single-call and multi-call. Single-call mode
* encodes the whole integer at once; it is an error if the output buffer is
* too small. Multi-call mode saves the position in *vli_pos, and thus it is
* possible to continue encoding if the buffer becomes full before the whole
* integer has been encoded.
*
* \param vli Integer to be encoded
* \param vli_pos How many VLI-encoded bytes have already been written
* out. When starting to encode a new integer in
* multi-call mode, *vli_pos must be set to zero.
* To use single-call encoding, set vli_pos to NULL.
* \param out Beginning of the output buffer
* \param out_pos The next byte will be written to out[*out_pos].
* \param out_size Size of the out buffer; the first byte into
* which no data is written to is out[out_size].
*
* \return Slightly different return values are used in multi-call and
* single-call modes.
*
* Single-call (vli_pos == NULL):
* - LZMA_OK: Integer successfully encoded.
* - LZMA_PROG_ERROR: Arguments are not sane. This can be due
* to too little output space; single-call mode doesn't use
* LZMA_BUF_ERROR, since the application should have checked
* the encoded size with lzma_vli_size().
*
* Multi-call (vli_pos != NULL):
* - LZMA_OK: So far all OK, but the integer is not
* completely written out yet.
* - LZMA_STREAM_END: Integer successfully encoded.
* - LZMA_BUF_ERROR: No output space was provided.
* - LZMA_PROG_ERROR: Arguments are not sane.
*/
extern LZMA_API(lzma_ret) lzma_vli_encode(lzma_vli vli, size_t *vli_pos,
uint8_t *out, size_t *out_pos, size_t out_size) lzma_nothrow;
/**
* \brief Decode a variable-length integer
*
* Like lzma_vli_encode(), this function has single-call and multi-call modes.
*
* \param vli Pointer to decoded integer. The decoder will
* initialize it to zero when *vli_pos == 0, so
* application isn't required to initialize *vli.
* \param vli_pos How many bytes have already been decoded. When
* starting to decode a new integer in multi-call
* mode, *vli_pos must be initialized to zero. To
* use single-call decoding, set vli_pos to NULL.
* \param in Beginning of the input buffer
* \param in_pos The next byte will be read from in[*in_pos].
* \param in_size Size of the input buffer; the first byte that
* won't be read is in[in_size].
*
* \return Slightly different return values are used in multi-call and
* single-call modes.
*
* Single-call (vli_pos == NULL):
* - LZMA_OK: Integer successfully decoded.
* - LZMA_DATA_ERROR: Integer is corrupt. This includes hitting
* the end of the input buffer before the whole integer was
* decoded; providing no input at all will use LZMA_DATA_ERROR.
* - LZMA_PROG_ERROR: Arguments are not sane.
*
* Multi-call (vli_pos != NULL):
* - LZMA_OK: So far all OK, but the integer is not
* completely decoded yet.
* - LZMA_STREAM_END: Integer successfully decoded.
* - LZMA_DATA_ERROR: Integer is corrupt.
* - LZMA_BUF_ERROR: No input was provided.
* - LZMA_PROG_ERROR: Arguments are not sane.
*/
extern LZMA_API(lzma_ret) lzma_vli_decode(lzma_vli *vli, size_t *vli_pos,
const uint8_t *in, size_t *in_pos, size_t in_size)
lzma_nothrow;
/**
* \brief Get the number of bytes required to encode a VLI
*
* \return Number of bytes on success (1-9). If vli isn't valid,
* zero is returned.
*/
extern LZMA_API(uint32_t) lzma_vli_size(lzma_vli vli)
lzma_nothrow lzma_attr_pure;

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size 224916

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version https://git-lfs.github.com/spec/v1
oid sha256:e4543a29d523b6bd3d15dc3c0020b5d63779a7f6aca04f1d98731167c8bfe88f
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liblzma.5.dylib

41
third-party/libxz/lib/liblzma.la vendored Executable file
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# liblzma.la - a libtool library file
# Generated by libtool (GNU libtool) 2.4.6.40-6ca5-dirty
#
# Please DO NOT delete this file!
# It is necessary for linking the library.
# The name that we can dlopen(3).
dlname='liblzma.5.dylib'
# Names of this library.
library_names='liblzma.5.dylib liblzma.dylib'
# The name of the static archive.
old_library='liblzma.a'
# Linker flags that cannot go in dependency_libs.
inherited_linker_flags=' -pthread'
# Libraries that this one depends upon.
dependency_libs=''
# Names of additional weak libraries provided by this library
weak_library_names=''
# Version information for liblzma.
current=7
age=2
revision=4
# Is this an already installed library?
installed=yes
# Should we warn about portability when linking against -modules?
shouldnotlink=no
# Files to dlopen/dlpreopen
dlopen=''
dlpreopen=''
# Directory that this library needs to be installed in:
libdir='/Users/hat/vimr/.deps/xz/../../third-party/libxz/lib'

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third-party/libxz/lib/pkgconfig/liblzma.pc vendored Normal file
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#
# Author: Lasse Collin
#
# This file has been put into the public domain.
# You can do whatever you want with this file.
#
prefix=/Users/hat/vimr/.deps/xz/../../third-party/libxz
exec_prefix=/Users/hat/vimr/.deps/xz/../../third-party/libxz
libdir=/Users/hat/vimr/.deps/xz/../../third-party/libxz/lib
includedir=/Users/hat/vimr/.deps/xz/../../third-party/libxz/include
Name: liblzma
Description: General purpose data compression library
URL: https://tukaani.org/xz/
Version: 5.2.4
Cflags: -I${includedir}
Libs: -L${libdir} -llzma
Libs.private: -D_THREAD_SAFE -pthread