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mosesdecoder/jam-files/engine/builtins.c
Kenneth Heafield 4977f2790f Update bjam to 1.51.0
2012-10-22 10:20:12 +01:00

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/*
* Copyright 1993-2002 Christopher Seiwald and Perforce Software, Inc.
*
* This file is part of Jam - see jam.c for Copyright information.
*/
#include "jam.h"
#include "lists.h"
#include "parse.h"
#include "builtins.h"
#include "rules.h"
#include "filesys.h"
#include "object.h"
#include "regexp.h"
#include "frames.h"
#include "hash.h"
#include "strings.h"
#include "pwd.h"
#include "pathsys.h"
#include "make.h"
#include "hdrmacro.h"
#include "compile.h"
#include "native.h"
#include "variable.h"
#include "timestamp.h"
#include "md5.h"
#include "constants.h"
#include <ctype.h>
#if defined(USE_EXECUNIX)
# include <sys/types.h>
# include <sys/wait.h>
#else
/*
NT does not have wait() and associated macros, it uses the return value
of system() instead. Status code group are documented at
http://msdn.microsoft.com/en-gb/library/ff565436.aspx
*/
# define WIFEXITED(w) (((w) & 0XFFFFFF00) == 0)
# define WEXITSTATUS(w)(w)
#endif
/*
* builtins.c - builtin jam rules
*
* External routines:
*
* load_builtin() - define builtin rules
*
* Internal routines:
*
* builtin_depends() - DEPENDS/INCLUDES rule.
* builtin_echo() - ECHO rule.
* builtin_exit() - EXIT rule.
* builtin_flags() - NOCARE, NOTFILE, TEMPORARY rule.
* builtin_glob() - GLOB rule.
* builtin_match() - MATCH rule.
*
* 01/10/01 (seiwald) - split from compile.c
*/
/*
* compile_builtin() - define builtin rules
*/
#define P0 (PARSE *)0
#define C0 (OBJECT *)0
#if defined( OS_NT ) || defined( OS_CYGWIN )
LIST * builtin_system_registry ( FRAME *, int );
LIST * builtin_system_registry_names( FRAME *, int );
#endif
int glob( const char * s, const char * c );
void backtrace ( FRAME * );
void backtrace_line ( FRAME * );
void print_source_line( FRAME * );
RULE * bind_builtin( const char * name_, LIST * (* f)( FRAME *, int flags ), int flags, const char * * args )
{
FUNCTION * func;
RULE * result;
OBJECT * name = object_new( name_ );
func = function_builtin( f, flags, args );
result = new_rule_body( root_module(), name, func, 1 );
function_free( func );
object_free( name );
return result;
}
RULE * duplicate_rule( const char * name_, RULE * other )
{
OBJECT * name = object_new( name_ );
RULE * result = import_rule( other, root_module(), name );
object_free( name );
return result;
}
void load_builtins()
{
duplicate_rule( "Always",
bind_builtin( "ALWAYS",
builtin_flags, T_FLAG_TOUCHED, 0 ) );
duplicate_rule( "Depends",
bind_builtin( "DEPENDS",
builtin_depends, 0, 0 ) );
duplicate_rule( "echo",
duplicate_rule( "Echo",
bind_builtin( "ECHO",
builtin_echo, 0, 0 ) ) );
{
const char * args[] = { "message", "*", ":", "result-value", "?", 0 };
duplicate_rule( "exit",
duplicate_rule( "Exit",
bind_builtin( "EXIT",
builtin_exit, 0, args ) ) );
}
{
const char * args[] = { "directories", "*", ":", "patterns", "*", ":", "case-insensitive", "?", 0 };
duplicate_rule( "Glob",
bind_builtin( "GLOB", builtin_glob, 0, args ) );
}
{
const char * args[] = { "patterns", "*", 0 };
bind_builtin( "GLOB-RECURSIVELY",
builtin_glob_recursive, 0, args );
}
duplicate_rule( "Includes",
bind_builtin( "INCLUDES",
builtin_depends, 1, 0 ) );
{
const char * args[] = { "targets", "*", ":", "targets-to-rebuild", "*", 0 };
bind_builtin( "REBUILDS",
builtin_rebuilds, 0, args );
}
duplicate_rule( "Leaves",
bind_builtin( "LEAVES",
builtin_flags, T_FLAG_LEAVES, 0 ) );
duplicate_rule( "Match",
bind_builtin( "MATCH",
builtin_match, 0, 0 ) );
{
const char * args[] = { "string", ":", "delimiters" };
bind_builtin( "SPLIT_BY_CHARACTERS",
builtin_split_by_characters, 0, 0 );
}
duplicate_rule( "NoCare",
bind_builtin( "NOCARE",
builtin_flags, T_FLAG_NOCARE, 0 ) );
duplicate_rule( "NOTIME",
duplicate_rule( "NotFile",
bind_builtin( "NOTFILE",
builtin_flags, T_FLAG_NOTFILE, 0 ) ) );
duplicate_rule( "NoUpdate",
bind_builtin( "NOUPDATE",
builtin_flags, T_FLAG_NOUPDATE, 0 ) );
duplicate_rule( "Temporary",
bind_builtin( "TEMPORARY",
builtin_flags, T_FLAG_TEMP, 0 ) );
bind_builtin( "ISFILE",
builtin_flags, T_FLAG_ISFILE, 0 );
duplicate_rule( "HdrMacro",
bind_builtin( "HDRMACRO",
builtin_hdrmacro, 0, 0 ) );
/* FAIL_EXPECTED is used to indicate that the result of a target build
* action should be inverted (ok <=> fail) this can be useful when
* performing test runs from Jamfiles.
*/
bind_builtin( "FAIL_EXPECTED",
builtin_flags, T_FLAG_FAIL_EXPECTED, 0 );
bind_builtin( "RMOLD",
builtin_flags, T_FLAG_RMOLD, 0 );
{
const char * args[] = { "targets", "*", 0 };
bind_builtin( "UPDATE",
builtin_update, 0, args );
}
{
const char * args[] = { "targets", "*",
":", "log", "?",
":", "ignore-minus-n", "?",
":", "ignore-minus-q", "?", 0 };
bind_builtin( "UPDATE_NOW",
builtin_update_now, 0, args );
}
{
const char * args[] = { "string", "pattern", "replacements", "+", 0 };
duplicate_rule( "subst",
bind_builtin( "SUBST",
builtin_subst, 0, args ) );
}
{
const char * args[] = { "module", "?", 0 };
bind_builtin( "RULENAMES",
builtin_rulenames, 0, args );
}
{
const char * args[] = { "module", "?", 0 };
bind_builtin( "VARNAMES",
builtin_varnames, 0, args );
}
{
const char * args[] = { "module", "?", 0 };
bind_builtin( "DELETE_MODULE",
builtin_delete_module, 0, args );
}
{
const char * args[] = { "source_module", "?",
":", "source_rules", "*",
":", "target_module", "?",
":", "target_rules", "*",
":", "localize", "?", 0 };
bind_builtin( "IMPORT",
builtin_import, 0, args );
}
{
const char * args[] = { "module", "?", ":", "rules", "*", 0 };
bind_builtin( "EXPORT",
builtin_export, 0, args );
}
{
const char * args[] = { "levels", "?", 0 };
bind_builtin( "CALLER_MODULE",
builtin_caller_module, 0, args );
}
{
const char * args[] = { "levels", "?", 0 };
bind_builtin( "BACKTRACE",
builtin_backtrace, 0, args );
}
{
const char * args[] = { 0 };
bind_builtin( "PWD",
builtin_pwd, 0, args );
}
{
const char * args[] = { "modules_to_import", "+", ":", "target_module", "?", 0 };
bind_builtin( "IMPORT_MODULE",
builtin_import_module, 0, args );
}
{
const char * args[] = { "module", "?", 0 };
bind_builtin( "IMPORTED_MODULES",
builtin_imported_modules, 0, args );
}
{
const char * args[] = { "instance_module", ":", "class_module", 0 };
bind_builtin( "INSTANCE",
builtin_instance, 0, args );
}
{
const char * args[] = { "sequence", "*", 0 };
bind_builtin( "SORT",
builtin_sort, 0, args );
}
{
const char * args[] = { "path_parts", "*", 0 };
bind_builtin( "NORMALIZE_PATH",
builtin_normalize_path, 0, args );
}
{
const char * args[] = { "args", "*", 0 };
bind_builtin( "CALC",
builtin_calc, 0, args );
}
{
const char * args[] = { "module", ":", "rule", 0 };
bind_builtin( "NATIVE_RULE",
builtin_native_rule, 0, args );
}
{
const char * args[] = { "module", ":", "rule", ":", "version", 0 };
bind_builtin( "HAS_NATIVE_RULE",
builtin_has_native_rule, 0, args );
}
{
const char * args[] = { "module", "*", 0 };
bind_builtin( "USER_MODULE",
builtin_user_module, 0, args );
}
{
const char * args[] = { 0 };
bind_builtin( "NEAREST_USER_LOCATION",
builtin_nearest_user_location, 0, args );
}
{
const char * args[] = { "file", 0 };
bind_builtin( "CHECK_IF_FILE",
builtin_check_if_file, 0, args );
}
#ifdef HAVE_PYTHON
{
const char * args[] = { "python-module", ":", "function", ":",
"jam-module", ":", "rule-name", 0 };
bind_builtin( "PYTHON_IMPORT_RULE",
builtin_python_import_rule, 0, args );
}
#endif
# if defined( OS_NT ) || defined( OS_CYGWIN )
{
const char * args[] = { "key_path", ":", "data", "?", 0 };
bind_builtin( "W32_GETREG",
builtin_system_registry, 0, args );
}
{
const char * args[] = { "key_path", ":", "result-type", 0 };
bind_builtin( "W32_GETREGNAMES",
builtin_system_registry_names, 0, args );
}
# endif
{
const char * args[] = { "command", ":", "*", 0 };
duplicate_rule( "SHELL",
bind_builtin( "COMMAND",
builtin_shell, 0, args ) );
}
{
const char * args[] = { "string", 0 };
bind_builtin( "MD5",
builtin_md5, 0, args ) ;
}
{
const char * args[] = { "name", ":", "mode", 0 };
bind_builtin( "FILE_OPEN",
builtin_file_open, 0, args );
}
{
const char * args[] = { "string", ":", "width", 0 };
bind_builtin( "PAD",
builtin_pad, 0, args );
}
{
const char * args[] = { "targets", "*", 0 };
bind_builtin( "PRECIOUS",
builtin_precious, 0, args );
}
{
const char * args [] = { 0 };
bind_builtin( "SELF_PATH", builtin_self_path, 0, args );
}
{
const char * args [] = { "path", 0 };
bind_builtin( "MAKEDIR", builtin_makedir, 0, args );
}
/* Initialize builtin modules. */
init_set();
init_path();
init_regex();
init_property_set();
init_sequence();
init_order();
}
/*
* builtin_calc() - CALC rule.
*
* The CALC rule performs simple mathematical operations on two arguments.
*/
LIST * builtin_calc( FRAME * frame, int flags )
{
LIST * arg = lol_get( frame->args, 0 );
LIST * result = L0;
long lhs_value;
long rhs_value;
long result_value;
char buffer [ 16 ];
char const * lhs;
char const * op;
char const * rhs;
LISTITER iter = list_begin( arg ), end = list_end( arg );
if ( iter == end ) return L0;
lhs = object_str( list_item( iter ) );
iter = list_next( iter );
if ( iter == end ) return L0;
op = object_str( list_item( iter ) );
iter = list_next( iter );
if ( iter == end ) return L0;
rhs = object_str( list_item( iter ) );
lhs_value = atoi( lhs );
rhs_value = atoi( rhs );
if ( strcmp( "+", op ) == 0 )
{
result_value = lhs_value + rhs_value;
}
else if ( strcmp( "-", op ) == 0 )
{
result_value = lhs_value - rhs_value;
}
else
{
return L0;
}
sprintf( buffer, "%ld", result_value );
result = list_push_back( result, object_new( buffer ) );
return result;
}
/*
* builtin_depends() - DEPENDS/INCLUDES rule.
*
* The DEPENDS/INCLUDES builtin rule appends each of the listed sources on the
* dependency/includes list of each of the listed targets. It binds both the
* targets and sources as TARGETs.
*/
LIST * builtin_depends( FRAME * frame, int flags )
{
LIST * targets = lol_get( frame->args, 0 );
LIST * sources = lol_get( frame->args, 1 );
LISTITER iter, end;
iter = list_begin( targets ), end = list_end( targets );
for ( ; iter != end; iter = list_next( iter ) )
{
TARGET * t = bindtarget( list_item( iter ) );
/* If doing INCLUDES, switch to the TARGET's include */
/* TARGET, creating it if needed. The internal include */
/* TARGET shares the name of its parent. */
if ( flags )
{
if ( !t->includes )
{
t->includes = copytarget( t );
t->includes->original_target = t;
}
t = t->includes;
}
t->depends = targetlist( t->depends, sources );
}
/* Enter reverse links */
iter = list_begin( sources ), end = list_end( sources );
for ( ; iter != end; iter = list_next( iter ) )
{
TARGET * s = bindtarget( list_item( iter ) );
s->dependants = targetlist( s->dependants, targets );
}
return L0;
}
/*
* builtin_rebuilds() - REBUILDS rule.
*
* The REBUILDS builtin rule appends each of the listed rebuild-targets in its
* 2nd argument on the rebuilds list of each of the listed targets in its first
* argument.
*/
LIST * builtin_rebuilds( FRAME * frame, int flags )
{
LIST * targets = lol_get( frame->args, 0 );
LIST * rebuilds = lol_get( frame->args, 1 );
LISTITER iter = list_begin( targets ), end = list_end( targets );
for ( ; iter != end; iter = list_next( iter ) )
{
TARGET * t = bindtarget( list_item( iter ) );
t->rebuilds = targetlist( t->rebuilds, rebuilds );
}
return L0;
}
/*
* builtin_echo() - ECHO rule.
*
* The ECHO builtin rule echoes the targets to the user. No other actions are
* taken.
*/
LIST * builtin_echo( FRAME * frame, int flags )
{
list_print( lol_get( frame->args, 0 ) );
printf( "\n" );
fflush( stdout );
return L0;
}
/*
* builtin_exit() - EXIT rule.
*
* The EXIT builtin rule echoes the targets to the user and exits the program
* with a failure status.
*/
LIST * builtin_exit( FRAME * frame, int flags )
{
LIST * code = lol_get( frame->args, 1 );
list_print( lol_get( frame->args, 0 ) );
printf( "\n" );
if ( !list_empty( code ) )
{
exit( atoi( object_str( list_front( code ) ) ) );
}
else
{
exit( EXITBAD ); /* yeech */
}
return L0;
}
/*
* builtin_flags() - NOCARE, NOTFILE, TEMPORARY rule.
*
* Builtin_flags() marks the target with the appropriate flag, for use by make0().
* It binds each target as a TARGET.
*/
LIST * builtin_flags( FRAME * frame, int flags )
{
LIST * l = lol_get( frame->args, 0 );
LISTITER iter = list_begin( l ), end = list_end( l );
for ( ; iter != end; iter = list_next( iter ) )
bindtarget( list_item( iter ) )->flags |= flags;
return L0;
}
/*
* builtin_globbing() - GLOB rule.
*/
struct globbing
{
LIST * patterns;
LIST * results;
LIST * case_insensitive;
};
static void downcase_inplace( char * p )
{
for ( ; *p; ++p )
*p = tolower( *p );
}
static void builtin_glob_back
(
void * closure,
OBJECT * file,
int status,
time_t time
)
{
PROFILE_ENTER( BUILTIN_GLOB_BACK );
struct globbing * globbing = (struct globbing *)closure;
LIST * l;
PATHNAME f;
string buf[ 1 ];
LISTITER iter, end;
/* Null out directory for matching. We wish we had file_dirscan() pass up a
* PATHNAME.
*/
path_parse( object_str( file ), &f );
f.f_dir.len = 0;
/* For globbing, we unconditionally ignore current and parent directory
* items. Since these items always exist, there is no reason why caller of
* GLOB would want to see them. We could also change file_dirscan(), but
* then paths with embedded "." and ".." would not work anywhere.
*/
if ( !strcmp( f.f_base.ptr, "." ) || !strcmp( f.f_base.ptr, ".." ) )
{
PROFILE_EXIT( BUILTIN_GLOB_BACK );
return;
}
string_new( buf );
path_build( &f, buf, 0 );
if ( globbing->case_insensitive )
downcase_inplace( buf->value );
iter = list_begin( globbing->patterns ), end = list_end( globbing->patterns );
for ( ; iter != end; iter = list_next( iter ) )
{
if ( !glob( object_str( list_item( iter ) ), buf->value ) )
{
globbing->results = list_push_back( globbing->results, object_copy( file ) );
break;
}
}
string_free( buf );
PROFILE_EXIT( BUILTIN_GLOB_BACK );
}
static LIST * downcase_list( LIST * in )
{
LIST * result = L0;
LISTITER iter = list_begin( in ), end = list_end( in );
string s[ 1 ];
string_new( s );
for ( ; iter != end; iter = list_next( iter ) )
{
string_append( s, object_str( list_item( iter ) ) );
downcase_inplace( s->value );
result = list_push_back( result, object_new( s->value ) );
string_truncate( s, 0 );
}
string_free( s );
return result;
}
LIST * builtin_glob( FRAME * frame, int flags )
{
LIST * l = lol_get( frame->args, 0 );
LIST * r = lol_get( frame->args, 1 );
LISTITER iter, end;
struct globbing globbing;
globbing.results = L0;
globbing.patterns = r;
globbing.case_insensitive
# if defined( OS_NT ) || defined( OS_CYGWIN )
= l; /* Always case-insensitive if any files can be found. */
# else
= lol_get( frame->args, 2 );
# endif
if ( globbing.case_insensitive )
globbing.patterns = downcase_list( r );
iter = list_begin( l ), end = list_end( l );
for ( ; iter != end; iter = list_next( iter ) )
file_dirscan( list_item( iter ), builtin_glob_back, &globbing );
if ( globbing.case_insensitive )
list_free( globbing.patterns );
return globbing.results;
}
static int has_wildcards( char const * str )
{
size_t const index = strcspn( str, "[]*?" );
return str[ index ] == '\0' ? 0 : 1;
}
/*
* If 'file' exists, append 'file' to 'list'. Returns 'list'.
*/
static LIST * append_if_exists( LIST * list, OBJECT * file )
{
time_t time;
timestamp( file, &time );
return time > 0
? list_push_back( list, object_copy( file ) )
: list;
}
LIST * glob1( OBJECT * dirname, OBJECT * pattern )
{
LIST * plist = list_new( object_copy(pattern) );
struct globbing globbing;
globbing.results = L0;
globbing.patterns = plist;
globbing.case_insensitive
# if defined( OS_NT ) || defined( OS_CYGWIN )
= plist; /* always case-insensitive if any files can be found */
# else
= L0;
# endif
if ( globbing.case_insensitive )
globbing.patterns = downcase_list( plist );
file_dirscan( dirname, builtin_glob_back, &globbing );
if ( globbing.case_insensitive )
list_free( globbing.patterns );
list_free( plist );
return globbing.results;
}
LIST * glob_recursive( const char * pattern )
{
LIST * result = L0;
/* Check if there's metacharacters in pattern */
if ( !has_wildcards( pattern ) )
{
/* No metacharacters. Check if the path exists. */
OBJECT * p = object_new( pattern );
result = append_if_exists( result, p );
object_free( p );
}
else
{
/* Have metacharacters in the pattern. Split into dir/name. */
PATHNAME path[ 1 ];
path_parse( pattern, path );
if ( path->f_dir.ptr )
{
LIST * dirs = L0;
string dirname[ 1 ];
string basename[ 1 ];
string_new( dirname );
string_new( basename );
string_append_range( dirname, path->f_dir.ptr,
path->f_dir.ptr + path->f_dir.len );
path->f_grist.ptr = 0;
path->f_grist.len = 0;
path->f_dir.ptr = 0;
path->f_dir.len = 0;
path_build( path, basename, 0 );
dirs = has_wildcards( dirname->value )
? glob_recursive( dirname->value )
: list_push_back( dirs, object_new( dirname->value ) );
if ( has_wildcards( basename->value ) )
{
OBJECT * b = object_new( basename->value );
LISTITER iter = list_begin( dirs ), end = list_end( dirs );
for ( ; iter != end; iter = list_next( iter ) )
result = list_append( result, glob1( list_item( iter ), b ) );
object_free( b );
}
else
{
LISTITER iter = list_begin( dirs ), end = list_end( dirs );
string file_string[ 1 ];
string_new( file_string );
/* No wildcard in basename. */
for ( ; iter != end; iter = list_next( iter ) )
{
OBJECT * p;
path->f_dir.ptr = object_str( list_item( iter ) );
path->f_dir.len = strlen( object_str( list_item( iter ) ) );
path_build( path, file_string, 0 );
p = object_new( file_string->value );
result = append_if_exists( result, p );
object_free( p );
string_truncate( file_string, 0 );
}
string_free( file_string );
}
string_free( dirname );
string_free( basename );
list_free( dirs );
}
else
{
/** No directory, just a pattern. */
OBJECT * p = object_new( pattern );
result = list_append( result, glob1( constant_dot, p ) );
object_free( p );
}
}
return result;
}
LIST * builtin_glob_recursive( FRAME * frame, int flags )
{
LIST * result = L0;
LIST * l = lol_get( frame->args, 0 );
LISTITER iter = list_begin( l ), end = list_end( l );
for ( ; iter != end; iter = list_next( iter ) )
result = list_append( result, glob_recursive( object_str( list_item( iter ) ) ) );
return result;
}
/*
* builtin_match() - MATCH rule, regexp matching.
*/
LIST * builtin_match( FRAME * frame, int flags )
{
LIST * l;
LIST * r;
LIST * result = L0;
LISTITER l_iter, l_end, r_iter, r_end;
string buf[ 1 ];
string_new( buf );
/* For each pattern */
l = lol_get( frame->args, 0 );
l_iter = list_begin( l ), l_end = list_end( l );
for (; l_iter != l_end; l_iter = list_next( l_iter ) )
{
/* Result is cached and intentionally never freed. */
regexp * re = regex_compile( list_item( l_iter ) );
/* For each string to match against. */
r = lol_get( frame->args, 1 );
r_iter = list_begin( r ), r_end = list_end( r );
for ( ; r_iter != r_end; r_iter = list_next( r_iter ) )
{
if ( regexec( re, object_str( list_item( r_iter ) ) ) )
{
int i;
int top;
/* Find highest parameter */
for ( top = NSUBEXP; top-- > 1; )
if ( re->startp[ top ] )
break;
/* And add all parameters up to highest onto list. */
/* Must have parameters to have results! */
for ( i = 1; i <= top; ++i )
{
string_append_range( buf, re->startp[ i ], re->endp[ i ] );
result = list_push_back( result, object_new( buf->value ) );
string_truncate( buf, 0 );
}
}
}
}
string_free( buf );
return result;
}
LIST * builtin_split_by_characters( FRAME * frame, int flags )
{
LIST * l1 = lol_get( frame->args, 0 );
LIST * l2 = lol_get( frame->args, 1 );
LIST * result = L0;
string buf[ 1 ];
const char * delimiters = object_str( list_front( l2 ) );
char * t;
string_copy( buf, object_str( list_front( l1 ) ) );
t = strtok( buf->value, delimiters) ;
while ( t )
{
result = list_push_back( result, object_new( t ) );
t = strtok( NULL, delimiters );
}
string_free( buf );
return result;
}
LIST * builtin_hdrmacro( FRAME * frame, int flags )
{
LIST * l = lol_get( frame->args, 0 );
LISTITER iter = list_begin( l ), end = list_end( l );
for ( ; iter != end; iter = list_next( iter ) )
{
TARGET * t = bindtarget( list_item( iter ) );
/* Scan file for header filename macro definitions. */
if ( DEBUG_HEADER )
printf( "scanning '%s' for header file macro definitions\n",
object_str( list_item( iter ) ) );
macro_headers( t );
}
return L0;
}
/*
* builtin_rulenames() - RULENAMES ( MODULE ? ).
*
* Returns a list of the non-local rule names in the given MODULE. If MODULE is
* not supplied, returns the list of rule names in the global module.
*/
static void add_rule_name( void * r_, void * result_ )
{
RULE * r = (RULE *)r_;
LIST * * result = (LIST * *)result_;
if ( r->exported )
*result = list_push_back( *result, object_copy( r->name ) );
}
LIST * builtin_rulenames( FRAME * frame, int flags )
{
LIST * arg0 = lol_get( frame->args, 0 );
LIST * result = L0;
module_t * source_module = bindmodule( !list_empty( arg0 ) ? list_front( arg0 ) : 0 );
if ( source_module->rules )
hashenumerate( source_module->rules, add_rule_name, &result );
return result;
}
/*
* builtin_varnames() - VARNAMES ( MODULE ? ).
*
* Returns a list of the variable names in the given MODULE. If MODULE is not
* supplied, returns the list of variable names in the global module.
*/
/* helper function for builtin_varnames(), below. Used with hashenumerate, will
* prepend the key of each element to the list
*/
static void add_hash_key( void * np, void * result_ )
{
LIST * * result = (LIST * *)result_;
*result = list_push_back( *result, object_copy( *(OBJECT * *)np ) );
}
LIST * builtin_varnames( FRAME * frame, int flags )
{
LIST * arg0 = lol_get( frame->args, 0 );
LIST * result = L0;
module_t * source_module = bindmodule( !list_empty(arg0) ? list_front(arg0) : 0 );
struct hash * vars = source_module->variables;
if ( vars )
hashenumerate( vars, add_hash_key, &result );
return result;
}
/*
* builtin_delete_module() - MODULE ?.
*
* Clears all rules and variables from the given module.
*/
LIST * builtin_delete_module( FRAME * frame, int flags )
{
LIST * arg0 = lol_get( frame->args, 0 );
LIST * result = L0;
module_t * source_module = bindmodule( !list_empty(arg0) ? list_front(arg0) : 0 );
delete_module( source_module );
return result;
}
static void unknown_rule( FRAME * frame, const char * key, module_t * module, OBJECT * rule_name )
{
const char * module_name = module->name ? object_str( module->name ) : "";
backtrace_line( frame->prev );
if ( module->name )
{
printf( "%s error: rule \"%s\" unknown in module \"%s.\"\n", key, object_str( rule_name ), object_str( module->name ) );
}
else
{
printf( "%s error: rule \"%s\" unknown in module \"\"\n", key, object_str( rule_name ) );
}
backtrace( frame->prev );
exit( 1 );
}
/*
* builtin_import() - IMPORT
* (
* SOURCE_MODULE ? :
* SOURCE_RULES * :
* TARGET_MODULE ? :
* TARGET_RULES * :
* LOCALIZE ?
* )
*
* The IMPORT rule imports rules from the SOURCE_MODULE into the TARGET_MODULE
* as local rules. If either SOURCE_MODULE or TARGET_MODULE is not supplied, it
* refers to the global module. SOURCE_RULES specifies which rules from the
* SOURCE_MODULE to import; TARGET_RULES specifies the names to give those rules
* in TARGET_MODULE. If SOURCE_RULES contains a name which doesn't correspond to
* a rule in SOURCE_MODULE, or if it contains a different number of items than
* TARGET_RULES, an error is issued. If LOCALIZE is specified, the rules will be
* executed in TARGET_MODULE, with corresponding access to its module local
* variables.
*/
LIST * builtin_import( FRAME * frame, int flags )
{
LIST * source_module_list = lol_get( frame->args, 0 );
LIST * source_rules = lol_get( frame->args, 1 );
LIST * target_module_list = lol_get( frame->args, 2 );
LIST * target_rules = lol_get( frame->args, 3 );
LIST * localize = lol_get( frame->args, 4 );
module_t * target_module =
bindmodule( !list_empty( target_module_list ) ? list_front( target_module_list ) : 0 );
module_t * source_module =
bindmodule( !list_empty( source_module_list ) ? list_front( source_module_list ) : 0 );
LISTITER source_iter = list_begin( source_rules ), source_end = list_end( source_rules );
LISTITER target_iter = list_begin( target_rules ), target_end = list_end( target_rules );
for ( ;
source_iter != source_end && target_iter != target_end;
source_iter = list_next( source_iter ),
target_iter = list_next( target_iter ) )
{
RULE * r;
RULE * imported;
if ( !source_module->rules ||
!(r = (RULE *)hash_find( source_module->rules, list_item( source_iter ) ) ) )
unknown_rule( frame, "IMPORT", source_module, list_item( source_iter ) );
imported = import_rule( r, target_module, list_item( target_iter ) );
if ( !list_empty( localize ) )
rule_localize( imported, target_module );
/* This rule is really part of some other module. Just refer to it here,
* but do not let it out.
*/
imported->exported = 0;
}
if ( source_iter != source_end || target_iter != target_end )
{
backtrace_line( frame->prev );
printf( "import error: length of source and target rule name lists don't match!\n" );
printf( " source: " );
list_print( source_rules );
printf( "\n target: " );
list_print( target_rules );
printf( "\n" );
backtrace( frame->prev );
exit( 1 );
}
return L0;
}
/*
* builtin_export() - EXPORT ( MODULE ? : RULES * ).
*
* The EXPORT rule marks RULES from the SOURCE_MODULE as non-local (and thus
* exportable). If an element of RULES does not name a rule in MODULE, an error
* is issued.
*/
LIST * builtin_export( FRAME * frame, int flags )
{
LIST * module_list = lol_get( frame->args, 0 );
LIST * rules = lol_get( frame->args, 1 );
module_t * m = bindmodule( !list_empty( module_list ) ? list_front( module_list ) : 0 );
LISTITER iter = list_begin( rules ), end = list_end( rules );
for ( ; iter != end; iter = list_next( iter ) )
{
RULE * r;
if ( !m->rules || !(r = (RULE *)hash_find( m->rules, list_item( iter ) ) ) )
unknown_rule( frame, "EXPORT", m, list_item( iter ) );
r->exported = 1;
}
return L0;
}
/*
* get_source_line() - Retrieve the file and line number that should be
* indicated for a given procedure in debug output or an error backtrace.
*/
static void get_source_line( FRAME * frame, const char * * file, int * line )
{
if ( frame->file )
{
const char * f = object_str( frame->file );
int l = frame->line;
if ( !strcmp( f, "+" ) )
{
f = "jambase.c";
l += 3;
}
*file = f;
*line = l;
}
else
{
*file = "(builtin)";
*line = -1;
}
}
void print_source_line( FRAME * frame )
{
const char * file;
int line;
get_source_line( frame, &file, &line );
if ( line < 0 )
printf( "(builtin):" );
else
printf( "%s:%d:", file, line );
}
/*
* backtrace_line() - print a single line of error backtrace for the given
* frame.
*/
void backtrace_line( FRAME * frame )
{
if ( frame == 0 )
{
printf( "(no frame):" );
}
else
{
print_source_line( frame );
printf( " in %s\n", frame->rulename );
}
}
/*
* backtrace() - Print the entire backtrace from the given frame to the Jambase
* which invoked it.
*/
void backtrace( FRAME * frame )
{
if ( !frame ) return;
while ( ( frame = frame->prev ) )
backtrace_line( frame );
}
/*
* builtin_backtrace() - A Jam version of the backtrace function, taking no
* arguments and returning a list of quadruples: FILENAME LINE MODULE. RULENAME
* describing each frame. Note that the module-name is always followed by a
* period.
*/
LIST * builtin_backtrace( FRAME * frame, int flags )
{
LIST * levels_arg = lol_get( frame->args, 0 );
int levels = !list_empty( levels_arg ) ? atoi( object_str( list_front( levels_arg ) ) ) : (int)( (unsigned int)(-1) >> 1 ) ;
LIST * result = L0;
for ( ; ( frame = frame->prev ) && levels ; --levels )
{
const char * file;
int line;
char buf[32];
string module_name[1];
get_source_line( frame, &file, &line );
sprintf( buf, "%d", line );
string_new( module_name );
if ( frame->module->name )
{
string_append( module_name, object_str( frame->module->name ) );
string_append( module_name, "." );
}
result = list_push_back( result, object_new( file ) );
result = list_push_back( result, object_new( buf ) );
result = list_push_back( result, object_new( module_name->value ) );
result = list_push_back( result, object_new( frame->rulename ) );
string_free( module_name );
}
return result;
}
/*
* builtin_caller_module() - CALLER_MODULE ( levels ? )
*
* If levels is not supplied, returns the name of the module of the rule which
* called the one calling this one. If levels is supplied, it is interpreted as
* an integer specifying a number of additional levels of call stack to traverse
* in order to locate the module in question. If no such module exists, returns
* the empty list. Also returns the empty list when the module in question is
* the global module. This rule is needed for implementing module import
* behavior.
*/
LIST * builtin_caller_module( FRAME * frame, int flags )
{
LIST * levels_arg = lol_get( frame->args, 0 );
int levels = !list_empty( levels_arg ) ? atoi( object_str( list_front( levels_arg ) ) ) : 0 ;
int i;
for ( i = 0; ( i < levels + 2 ) && frame->prev; ++i )
frame = frame->prev;
if ( frame->module == root_module() )
return L0;
else
return list_new( object_copy( frame->module->name ) );
}
/*
* Return the current working directory.
*
* Usage: pwd = [ PWD ] ;
*/
LIST * builtin_pwd( FRAME * frame, int flags )
{
return pwd();
}
/*
* Adds targets to the list of target that jam will attempt to update.
*/
LIST * builtin_update( FRAME * frame, int flags )
{
LIST * result = list_copy( targets_to_update() );
LIST * arg1 = lol_get( frame->args, 0 );
LISTITER iter = list_begin( arg1 ), end = list_end( arg1 );
clear_targets_to_update();
for ( ; iter != end; iter = list_next( iter ) )
mark_target_for_updating( object_copy( list_item( iter ) ) );
return result;
}
extern int anyhow;
int last_update_now_status;
/* Takes a list of target names as first argument, and immediately
updates them.
Second parameter, if specified, if the descriptor (converted to a string)
of a log file where all build output is redirected.
Third parameter, if non-empty, specifies that the -n option should have
no effect -- that is, all out-of-date targets should be rebuild.
*/
LIST * builtin_update_now( FRAME * frame, int flags )
{
LIST * targets = lol_get( frame->args, 0 );
LIST * log = lol_get( frame->args, 1 );
LIST * force = lol_get( frame->args, 2 );
LIST * continue_ = lol_get( frame->args, 3 );
int status;
int original_stdout = 0;
int original_stderr = 0;
int original_noexec = 0;
int original_quitquick = 0;
if ( !list_empty( log ) )
{
int fd = atoi( object_str( list_front( log ) ) );
/* Redirect stdout and stderr, temporary, to the log file. */
original_stdout = dup( 0 );
original_stderr = dup( 1 );
dup2 ( fd, 0 );
dup2 ( fd, 1 );
}
if ( !list_empty( force ) )
{
original_noexec = globs.noexec;
globs.noexec = 0;
original_quitquick = globs.quitquick;
globs.quitquick = 0;
}
if ( !list_empty( continue_ ) )
{
original_quitquick = globs.quitquick;
globs.quitquick = 0;
}
status = make( targets, anyhow );
if ( !list_empty( force ) )
{
globs.noexec = original_noexec;
globs.quitquick = original_quitquick;
}
if ( !list_empty( continue_ ) )
{
globs.quitquick = original_quitquick;
}
if ( !list_empty( log ) )
{
/* Flush whatever stdio might have buffered, while descriptions
0 and 1 still refer to the log file. */
fflush( stdout );
fflush( stderr );
dup2( original_stdout, 0 );
dup2( original_stderr, 1 );
close( original_stdout );
close( original_stderr );
}
last_update_now_status = status;
if ( status == 0 )
return list_new( object_copy( constant_ok ) );
else
return L0;
}
LIST * builtin_import_module( FRAME * frame, int flags )
{
LIST * arg1 = lol_get( frame->args, 0 );
LIST * arg2 = lol_get( frame->args, 1 );
module_t * m = !list_empty( arg2 ) ? bindmodule( list_front( arg2 ) ) : root_module();
import_module( arg1, m );
return L0;
}
LIST * builtin_imported_modules( FRAME * frame, int flags )
{
LIST * arg0 = lol_get( frame->args, 0 );
return imported_modules( bindmodule( !list_empty( arg0 ) ? list_front( arg0 ) : 0 ) );
}
LIST * builtin_instance( FRAME * frame, int flags )
{
LIST * arg1 = lol_get( frame->args, 0 );
LIST * arg2 = lol_get( frame->args, 1 );
module_t * const instance = bindmodule( list_front( arg1 ) );
module_t * const class_module = bindmodule( list_front( arg2 ) );
instance->class_module = class_module;
module_set_fixed_variables( instance, class_module->num_fixed_variables );
return L0;
}
LIST * builtin_sort( FRAME * frame, int flags )
{
LIST * arg1 = lol_get( frame->args, 0 );
return list_sort( arg1 );
}
LIST * builtin_normalize_path( FRAME * frame, int flags )
{
LIST * arg = lol_get( frame->args, 0 );
/* First, we iterate over all '/'-separated elements, starting from the end
* of string. If we see a '..', we remove a previous path elements. If we
* see '.', we remove it. The removal is done by overwriting data using '\1'
* in the string. After the whole string has been processed, we do a second
* pass, removing all the entered '\1' characters.
*/
string in[ 1 ];
string out[ 1 ];
/* Last character of the part of string still to be processed. */
char * end;
/* Working pointer. */
char * current;
/* Number of '..' elements seen and not processed yet. */
int dotdots = 0;
int rooted = 0;
OBJECT * result = 0;
LISTITER arg_iter = list_begin( arg ), arg_end = list_end( arg );
/* Make a copy of input: we should not change it. Prepend a '/' before it as
* a guard for the algorithm later on and remember whether it was originally
* rooted or not.
*/
string_new( in );
string_push_back( in, '/' );
for ( ; arg_iter != arg_end; arg_iter = list_next( arg_iter ) )
{
if ( object_str( list_item( arg_iter ) )[ 0 ] != '\0' )
{
if ( in->size == 1 )
rooted = ( ( object_str( list_item( arg_iter ) )[ 0 ] == '/' ) ||
( object_str( list_item( arg_iter ) )[ 0 ] == '\\' ) );
else
string_append( in, "/" );
string_append( in, object_str( list_item( arg_iter ) ) );
}
}
/* Convert \ into /. On Windows, paths using / and \ are equivalent, and we
* want this function to obtain a canonic representation.
*/
for ( current = in->value, end = in->value + in->size;
current < end; ++current )
if ( *current == '\\' )
*current = '/';
/* Now we remove any extra path elements by overwriting them with '\1'
* characters and cound how many more unused '..' path elements there are
* remaining. Note that each remaining path element with always starts with
* a '/' character.
*/
for ( end = in->value + in->size - 1; end >= in->value; )
{
/* Set 'current' to the next occurence of '/', which always exists. */
for ( current = end; *current != '/'; --current );
if ( current == end )
{
/* Found a trailing or duplicate '/'. Remove it. */
*current = '\1';
}
else if ( ( end - current == 1 ) && ( *(current + 1) == '.' ) )
{
/* Found '/.'. Remove them all. */
*current = '\1';
*(current + 1) = '\1';
}
else if ( ( end - current == 2 ) && ( *(current + 1) == '.' ) && ( *(current + 2) == '.' ) )
{
/* Found '/..'. Remove them all. */
*current = '\1';
*(current + 1) = '\1';
*(current + 2) = '\1';
++dotdots;
}
else if ( dotdots )
{
memset( current, '\1', end - current + 1 );
--dotdots;
}
end = current - 1;
}
string_new( out );
/* Now we know that we need to add exactly dotdots '..' path elements to the
* front and that our string is either empty or has a '/' as its first
* significant character. If we have any dotdots remaining then the passed
* path must not have been rooted or else it is invalid we return an empty
* list.
*/
if ( dotdots )
{
if ( rooted )
{
string_free( out );
string_free( in );
return L0;
}
do
string_append( out, "/.." );
while ( --dotdots );
}
/* Now we actually remove all the path characters marked for removal. */
for ( current = in->value; *current; ++current )
if ( *current != '\1' )
string_push_back( out, *current );
/* Here we know that our string contains no '\1' characters and is either
* empty or has a '/' as its initial character. If the original path was not
* rooted and we have a non-empty path we need to drop the initial '/'. If
* the original path was rooted and we have an empty path we need to add
* back the '/'.
*/
result = object_new( out->size ? out->value + !rooted : ( rooted ? "/" : "." ) );
string_free( out );
string_free( in );
return list_new( result );
}
LIST * builtin_native_rule( FRAME * frame, int flags )
{
LIST * module_name = lol_get( frame->args, 0 );
LIST * rule_name = lol_get( frame->args, 1 );
module_t * module = bindmodule( list_front( module_name ) );
native_rule_t * np;
if ( module->native_rules && (np = (native_rule_t *)hash_find( module->native_rules, list_front( rule_name ) ) ) )
{
new_rule_body( module, np->name, np->procedure, 1 );
}
else
{
backtrace_line( frame->prev );
printf( "error: no native rule \"%s\" defined in module \"%s.\"\n",
object_str( list_front( rule_name ) ), object_str( module->name ) );
backtrace( frame->prev );
exit( 1 );
}
return L0;
}
LIST * builtin_has_native_rule( FRAME * frame, int flags )
{
LIST * module_name = lol_get( frame->args, 0 );
LIST * rule_name = lol_get( frame->args, 1 );
LIST * version = lol_get( frame->args, 2 );
module_t * module = bindmodule( list_front( module_name ) );
native_rule_t * np;
if ( module->native_rules && (np = (native_rule_t *)hash_find( module->native_rules, list_front( rule_name ) ) ) )
{
int expected_version = atoi( object_str( list_front( version ) ) );
if ( np->version == expected_version )
return list_new( object_copy( constant_true ) );
}
return L0;
}
LIST * builtin_user_module( FRAME * frame, int flags )
{
LIST * module_name = lol_get( frame->args, 0 );
LISTITER iter = list_begin( module_name ), end = list_end( module_name );
for ( ; iter != end; iter = list_next( iter ) )
{
module_t * m = bindmodule( list_item( iter ) );
m->user_module = 1;
}
return L0;
}
LIST * builtin_nearest_user_location( FRAME * frame, int flags )
{
FRAME * nearest_user_frame =
frame->module->user_module ? frame : frame->prev_user;
if ( !nearest_user_frame )
return L0;
{
LIST * result = L0;
const char * file;
int line;
char buf[32];
get_source_line( nearest_user_frame, &file, &line );
sprintf( buf, "%d", line );
result = list_push_back( result, object_new( file ) );
result = list_push_back( result, object_new( buf ) );
return result;
}
}
LIST * builtin_check_if_file( FRAME * frame, int flags )
{
LIST * name = lol_get( frame->args, 0 );
return file_is_file( list_front( name ) ) == 1
? list_new( object_copy( constant_true ) )
: L0 ;
}
LIST * builtin_md5( FRAME * frame, int flags )
{
LIST * l = lol_get( frame->args, 0 );
const char* s = object_str( list_front( l ) );
md5_state_t state;
md5_byte_t digest[16];
char hex_output[16*2 + 1];
int di;
md5_init( &state );
md5_append( &state, (const md5_byte_t *)s, strlen(s) );
md5_finish( &state, digest );
for (di = 0; di < 16; ++di)
sprintf( hex_output + di * 2, "%02x", digest[di] );
return list_new( object_new( hex_output ) );
}
LIST *builtin_file_open( FRAME * frame, int flags )
{
const char * name = object_str( list_front( lol_get( frame->args, 0 ) ) );
const char * mode = object_str( list_front( lol_get( frame->args, 1 ) ) );
int fd;
char buffer[sizeof("4294967295")];
if ( strcmp(mode, "w") == 0 )
{
fd = open( name, O_WRONLY|O_CREAT|O_TRUNC, 0666 );
}
else
{
fd = open( name, O_RDONLY );
}
if (fd != -1)
{
sprintf( buffer, "%d", fd );
return list_new( object_new( buffer ) );
}
else
{
return L0;
}
}
LIST *builtin_pad( FRAME * frame, int flags )
{
OBJECT * string = list_front( lol_get( frame->args, 0 ) );
const char * width_s = object_str( list_front( lol_get( frame->args, 1 ) ) );
int current = strlen( object_str( string ) );
int desired = atoi( width_s );
if (current >= desired)
return list_new( object_copy( string ) );
else
{
char * buffer = BJAM_MALLOC( desired + 1 );
int i;
LIST * result;
strcpy( buffer, object_str( string ) );
for ( i = current; i < desired; ++i )
buffer[i] = ' ';
buffer[desired] = '\0';
result = list_new( object_new( buffer ) );
BJAM_FREE( buffer );
return result;
}
}
LIST *builtin_precious( FRAME * frame, int flags )
{
LIST * targets = lol_get(frame->args, 0);
LISTITER iter = list_begin( targets ), end = list_end( targets );
for ( ; iter != end; iter = list_next( iter ) )
{
TARGET* t = bindtarget( list_item( iter ) );
t->flags |= T_FLAG_PRECIOUS;
}
return L0;
}
LIST *builtin_self_path( FRAME * frame, int flags )
{
extern const char * saved_argv0;
char * p = executable_path( saved_argv0 );
if ( p )
{
LIST* result = list_new( object_new( p ) );
free( p );
return result;
}
else
{
return L0;
}
}
LIST *builtin_makedir( FRAME * frame, int flags )
{
LIST * path = lol_get( frame->args, 0 );
if ( file_mkdir( object_str( list_front( path ) ) ) == 0 )
{
LIST * result = list_new( object_copy( list_front( path ) ) );
return result;
}
else
{
return L0;
}
}
#ifdef HAVE_PYTHON
LIST * builtin_python_import_rule( FRAME * frame, int flags )
{
static int first_time = 1;
const char * python_module = object_str( list_front( lol_get( frame->args, 0 ) ) );
const char * python_function = object_str( list_front( lol_get( frame->args, 1 ) ) );
OBJECT * jam_module = list_front( lol_get( frame->args, 2 ) );
OBJECT * jam_rule = list_front( lol_get( frame->args, 3 ) );
PyObject * pName;
PyObject * pModule;
PyObject * pDict;
PyObject * pFunc;
if ( first_time )
{
/* At the first invocation, we add the value of the global
* EXTRA_PYTHONPATH to the sys.path Python variable.
*/
LIST * extra = 0;
module_t * outer_module = frame->module;
LISTITER iter, end;
first_time = 0;
extra = var_get( root_module(), constant_extra_pythonpath );
iter = list_begin( extra ), end = list_end( extra );
for ( ; iter != end; iter = list_next( iter ) )
{
string buf[ 1 ];
string_new( buf );
string_append( buf, "import sys\nsys.path.append(\"" );
string_append( buf, object_str( list_item( iter ) ) );
string_append( buf, "\")\n" );
PyRun_SimpleString( buf->value );
string_free( buf );
}
}
pName = PyString_FromString( python_module );
pModule = PyImport_Import( pName );
Py_DECREF( pName );
if ( pModule != NULL )
{
pDict = PyModule_GetDict( pModule );
pFunc = PyDict_GetItemString( pDict, python_function );
if ( pFunc && PyCallable_Check( pFunc ) )
{
module_t * m = bindmodule( jam_module );
new_rule_body( m, jam_rule, function_python( pFunc, 0 ), 0 );
}
else
{
if ( PyErr_Occurred() )
PyErr_Print();
fprintf( stderr, "Cannot find function \"%s\"\n", python_function );
}
Py_DECREF( pModule );
}
else
{
PyErr_Print();
fprintf( stderr, "Failed to load \"%s\"\n", python_module );
}
return L0;
}
#endif
void lol_build( LOL * lol, const char * * elements )
{
LIST * l = L0;
lol_init( lol );
while ( elements && *elements )
{
if ( !strcmp( *elements, ":" ) )
{
lol_add( lol, l );
l = L0 ;
}
else
{
l = list_push_back( l, object_new( *elements ) );
}
++elements;
}
if ( l != L0 )
lol_add( lol, l );
}
#ifdef HAVE_PYTHON
/*
* Calls the bjam rule specified by name passed in 'args'. The name is looked up
* in the context of bjam's 'python_interface' module. Returns the list of
* string retured by the rule.
*/
PyObject* bjam_call( PyObject * self, PyObject * args )
{
FRAME inner[ 1 ];
LIST * result;
PARSE * p;
OBJECT * rulename;
/* Build up the list of arg lists. */
frame_init( inner );
inner->prev = 0;
inner->prev_user = 0;
inner->module = bindmodule( constant_python_interface );
/* Extract the rule name and arguments from 'args'. */
/* PyTuple_GetItem returns borrowed reference. */
rulename = object_new( PyString_AsString( PyTuple_GetItem( args, 0 ) ) );
{
int i = 1;
int size = PyTuple_Size( args );
for ( ; i < size; ++i )
{
PyObject * a = PyTuple_GetItem( args, i );
if ( PyString_Check( a ) )
{
lol_add( inner->args, list_new( object_new(
PyString_AsString( a ) ) ) );
}
else if ( PySequence_Check( a ) )
{
LIST * l = 0;
int s = PySequence_Size( a );
int i = 0;
for ( ; i < s; ++i )
{
/* PySequence_GetItem returns new reference. */
PyObject * e = PySequence_GetItem( a, i );
char * s = PyString_AsString( e );
if ( !s )
{
printf( "Invalid parameter type passed from Python\n" );
exit( 1 );
}
l = list_push_back( l, object_new( s ) );
Py_DECREF( e );
}
lol_add( inner->args, l );
}
}
}
result = evaluate_rule( rulename, inner );
object_free( rulename );
frame_free( inner );
/* Convert the bjam list into a Python list result. */
{
PyObject * pyResult = PyList_New( list_length( result ) );
int i = 0;
LISTITER iter = list_begin( result ), end = list_end( result );
for ( ; iter != end; iter = list_next( iter ) )
{
PyList_SetItem( pyResult, i, PyString_FromString( object_str( list_item( iter ) ) ) );
i += 1;
}
list_free( result );
return pyResult;
}
}
/*
* Accepts four arguments:
* - module name
* - rule name,
* - Python callable.
* - (optional) bjam language function signature.
* Creates a bjam rule with the specified name in the specified module, which will
* invoke the Python callable.
*/
PyObject * bjam_import_rule( PyObject * self, PyObject * args )
{
char * module;
char * rule;
PyObject * func;
PyObject * bjam_signature = NULL;
module_t * m;
RULE * r;
OBJECT * module_name;
OBJECT * rule_name;
if ( !PyArg_ParseTuple( args, "ssO|O:import_rule",
&module, &rule, &func, &bjam_signature ) )
return NULL;
if ( !PyCallable_Check( func ) )
{
PyErr_SetString( PyExc_RuntimeError,
"Non-callable object passed to bjam.import_rule" );
return NULL;
}
module_name = *module ? object_new( module ) : 0;
m = bindmodule( module_name );
if( module_name )
{
object_free( module_name );
}
rule_name = object_new( rule );
new_rule_body( m, rule_name, function_python( func, bjam_signature ), 0 );
object_free( rule_name );
Py_INCREF( Py_None );
return Py_None;
}
/*
* Accepts four arguments:
* - an action name
* - an action body
* - a list of variable that will be bound inside the action
* - integer flags.
* Defines an action on bjam side.
*/
PyObject * bjam_define_action( PyObject * self, PyObject * args )
{
char * name;
char * body;
module_t * m;
PyObject * bindlist_python;
int flags;
LIST * bindlist = L0;
int n;
int i;
OBJECT * name_str;
FUNCTION * body_func;
if ( !PyArg_ParseTuple( args, "ssO!i:define_action", &name, &body,
&PyList_Type, &bindlist_python, &flags ) )
return NULL;
n = PyList_Size( bindlist_python );
for ( i = 0; i < n; ++i )
{
PyObject * next = PyList_GetItem( bindlist_python, i );
if ( !PyString_Check( next ) )
{
PyErr_SetString( PyExc_RuntimeError,
"bind list has non-string type" );
return NULL;
}
bindlist = list_push_back( bindlist, object_new( PyString_AsString( next ) ) );
}
name_str = object_new( name );
body_func = function_compile_actions( body, constant_builtin, -1 );
new_rule_actions( root_module(), name_str, body_func, bindlist, flags );
function_free( body_func );
object_free( name_str );
Py_INCREF( Py_None );
return Py_None;
}
/*
* Returns the value of a variable in root Jam module.
*/
PyObject * bjam_variable( PyObject * self, PyObject * args )
{
char * name;
LIST * value;
PyObject * result;
int i;
OBJECT * varname;
LISTITER iter, end;
if ( !PyArg_ParseTuple( args, "s", &name ) )
return NULL;
varname = object_new( name );
value = var_get( root_module(), varname );
object_free( varname );
iter = list_begin( value ), end = list_end( value );
result = PyList_New( list_length( value ) );
for ( i = 0; iter != end; iter = list_next( iter ), ++i )
PyList_SetItem( result, i, PyString_FromString( object_str( list_item( iter ) ) ) );
return result;
}
PyObject * bjam_backtrace( PyObject * self, PyObject * args )
{
PyObject * result = PyList_New( 0 );
struct frame * f = frame_before_python_call;
for ( ; f = f->prev; )
{
PyObject * tuple = PyTuple_New( 4 );
const char * file;
int line;
char buf[ 32 ];
string module_name[1];
get_source_line( f, &file, &line );
sprintf( buf, "%d", line );
string_new( module_name );
if ( f->module->name )
{
string_append( module_name, object_str( f->module->name ) );
string_append( module_name, "." );
}
/* PyTuple_SetItem steals reference. */
PyTuple_SetItem( tuple, 0, PyString_FromString( file ) );
PyTuple_SetItem( tuple, 1, PyString_FromString( buf ) );
PyTuple_SetItem( tuple, 2, PyString_FromString( module_name->value ) );
PyTuple_SetItem( tuple, 3, PyString_FromString( f->rulename ) );
string_free( module_name );
PyList_Append( result, tuple );
Py_DECREF( tuple );
}
return result;
}
PyObject * bjam_caller( PyObject * self, PyObject * args )
{
const char * s = frame_before_python_call->prev->module->name ?
object_str( frame_before_python_call->prev->module->name ) :
"";
return PyString_FromString( s );
}
#endif /* #ifdef HAVE_PYTHON */
#ifdef HAVE_POPEN
#if defined(_MSC_VER) || defined(__BORLANDC__)
#define popen windows_popen_wrapper
#define pclose _pclose
/*
* This wrapper is a workaround for a funny _popen() feature on Windows
* where it eats external quotes in some cases. The bug seems to be related
* to the quote stripping functionality used by the Windows cmd.exe
* interpreter when its /S is not specified.
*
* Cleaned up quote from the cmd.exe help screen as displayed on Windows XP
* SP3:
*
* 1. If all of the following conditions are met, then quote characters on
* the command line are preserved:
*
* - no /S switch
* - exactly two quote characters
* - no special characters between the two quote characters, where
* special is one of: &<>()@^|
* - there are one or more whitespace characters between the two quote
* characters
* - the string between the two quote characters is the name of an
* executable file.
*
* 2. Otherwise, old behavior is to see if the first character is a quote
* character and if so, strip the leading character and remove the last
* quote character on the command line, preserving any text after the
* last quote character.
*
* This causes some commands containing quotes not to be executed correctly.
* For example:
*
* "\Long folder name\aaa.exe" --name="Jurko" --no-surname
*
* would get its outermost quotes stripped and would be executed as:
*
* \Long folder name\aaa.exe" --name="Jurko --no-surname
*
* which would report an error about '\Long' not being a valid command.
*
* cmd.exe help seems to indicate it would be enough to add an extra space
* character in front of the command to avoid this but this does not work,
* most likely due to the shell first stripping all leading whitespace
* characters from the command.
*
* Solution implemented here is to quote the whole command in case it
* contains any quote characters. Note thought this will not work correctly
* should Windows ever 'fix' this feature.
* (03.06.2008.) (Jurko)
*/
static FILE * windows_popen_wrapper( const char * command, const char * mode )
{
int extra_command_quotes_needed = ( strchr( command, '"' ) != 0 );
string quoted_command;
FILE * result;
if ( extra_command_quotes_needed )
{
string_new( &quoted_command );
string_append( &quoted_command, "\"" );
string_append( &quoted_command, command );
string_append( &quoted_command, "\"" );
command = quoted_command.value;
}
result = _popen( command, "r" );
if ( extra_command_quotes_needed )
string_free( &quoted_command );
return result;
}
#endif
static char * rtrim( char * s )
{
char * p = s;
while ( *p ) ++p;
for ( --p; p >= s && isspace( *p ); *p-- = 0 );
return s;
}
LIST * builtin_shell( FRAME * frame, int flags )
{
LIST * command = lol_get( frame->args, 0 );
LIST * result = L0;
string s;
int ret;
char buffer[ 1024 ];
FILE * p = NULL;
int exit_status = -1;
int exit_status_opt = 0;
int no_output_opt = 0;
int strip_eol_opt = 0;
/* Process the variable args options. */
{
int a = 1;
LIST * arg = lol_get( frame->args, a );
while ( !list_empty( arg ) )
{
if ( strcmp( "exit-status", object_str( list_front( arg ) ) ) == 0 )
{
exit_status_opt = 1;
}
else if ( strcmp( "no-output", object_str( list_front( arg ) ) ) == 0 )
{
no_output_opt = 1;
}
else if ( strcmp("strip-eol", object_str( list_front( arg ) ) ) == 0 )
{
strip_eol_opt = 1;
}
arg = lol_get( frame->args, ++a );
}
}
/* The following fflush() call seems to be indicated as a workaround for a
* popen() bug on POSIX implementations related to synhronizing input
* stream positions for the called and the calling process.
*/
fflush( NULL );
p = popen( object_str( list_front( command ) ), "r" );
if ( p == NULL )
return L0;
string_new( &s );
while ( ( ret = fread( buffer, sizeof( char ), sizeof( buffer ) - 1, p ) ) > 0 )
{
buffer[ret] = 0;
if ( !no_output_opt )
{
if ( strip_eol_opt )
rtrim(buffer);
string_append( &s, buffer );
}
}
exit_status = pclose( p );
/* The command output is returned first. */
result = list_new( object_new( s.value ) );
string_free( &s );
/* The command exit result next. */
if ( exit_status_opt )
{
if ( WIFEXITED(exit_status) )
exit_status = WEXITSTATUS(exit_status);
else
exit_status = -1;
sprintf( buffer, "%d", exit_status );
result = list_push_back( result, object_new( buffer ) );
}
return result;
}
#else /* #ifdef HAVE_POPEN */
LIST * builtin_shell( FRAME * frame, int flags )
{
return L0;
}
#endif /* #ifdef HAVE_POPEN */
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