mirror of
https://github.com/LadybirdBrowser/ladybird.git
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5e1499d104
This commit un-deprecates DeprecatedString, and repurposes it as a byte
string.
As the null state has already been removed, there are no other
particularly hairy blockers in repurposing this type as a byte string
(what it _really_ is).
This commit is auto-generated:
$ xs=$(ack -l \bDeprecatedString\b\|deprecated_string AK Userland \
Meta Ports Ladybird Tests Kernel)
$ perl -pie 's/\bDeprecatedString\b/ByteString/g;
s/deprecated_string/byte_string/g' $xs
$ clang-format --style=file -i \
$(git diff --name-only | grep \.cpp\|\.h)
$ gn format $(git ls-files '*.gn' '*.gni')
249 lines
8.7 KiB
C++
249 lines
8.7 KiB
C++
/*
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* Copyright (c) 2020, Fei Wu <f.eiwu@yahoo.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/ByteString.h>
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#include <AK/LexicalPath.h>
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#include <AK/NumberFormat.h>
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#include <AK/Vector.h>
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#include <LibCore/ArgsParser.h>
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#include <LibCore/DateTime.h>
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#include <LibCore/DirIterator.h>
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#include <LibCore/File.h>
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#include <LibCore/System.h>
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#include <LibMain/Main.h>
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#include <limits.h>
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#include <string.h>
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struct DuOption {
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enum class TimeType {
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NotUsed,
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Modification,
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Access,
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Status
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};
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bool human_readable = false;
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bool human_readable_si = false;
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bool all = false;
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bool apparent_size = false;
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bool one_file_system = false;
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i64 threshold = 0;
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TimeType time_type = TimeType::NotUsed;
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Vector<ByteString> excluded_patterns;
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u64 block_size = 1024;
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size_t max_depth = SIZE_MAX;
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};
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struct VisitedFile {
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dev_t device;
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ino_t inode;
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};
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template<>
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struct AK::Traits<VisitedFile> : public DefaultTraits<VisitedFile> {
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static unsigned hash(VisitedFile const& visited_file)
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{
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return pair_int_hash(u64_hash(visited_file.device), u64_hash(visited_file.inode));
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}
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static bool equals(VisitedFile const& a, VisitedFile const& b)
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{
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return a.device == b.device && a.inode == b.inode;
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}
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};
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static HashTable<VisitedFile> s_visited_files;
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static ErrorOr<void> parse_args(Main::Arguments arguments, Vector<ByteString>& files, DuOption& du_option);
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static u64 print_space_usage(ByteString const& path, DuOption const& du_option, size_t current_depth, Optional<dev_t> root_device = {});
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ErrorOr<int> serenity_main(Main::Arguments arguments)
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{
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Vector<ByteString> files;
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DuOption du_option;
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TRY(parse_args(arguments, files, du_option));
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for (auto const& file : files)
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print_space_usage(file, du_option, 0);
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return 0;
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}
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ErrorOr<void> parse_args(Main::Arguments arguments, Vector<ByteString>& files, DuOption& du_option)
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{
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bool summarize = false;
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StringView pattern;
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StringView exclude_from;
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Vector<StringView> files_to_process;
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Core::ArgsParser::Option time_option {
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Core::ArgsParser::OptionArgumentMode::Required,
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"Show time of type time-type of any file in the directory, or any of its subdirectories. "
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"Available choices: mtime, modification, ctime, status, use, atime, access",
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"time",
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0,
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"time-type",
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[&du_option](StringView option) {
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if (option == "mtime"sv || option == "modification"sv)
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du_option.time_type = DuOption::TimeType::Modification;
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else if (option == "ctime"sv || option == "status"sv || option == "use"sv)
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du_option.time_type = DuOption::TimeType::Status;
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else if (option == "atime"sv || option == "access"sv)
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du_option.time_type = DuOption::TimeType::Access;
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else
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return false;
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return true;
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}
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};
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Core::ArgsParser::Option block_size_1k_option {
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Core::ArgsParser::OptionArgumentMode::None,
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"Equivalent to `--block-size 1024`",
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nullptr,
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'k',
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nullptr,
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[&du_option](StringView) {
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du_option.block_size = 1024;
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return true;
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}
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};
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Core::ArgsParser args_parser;
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args_parser.set_general_help("Display actual or apparent disk usage of files or directories.");
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args_parser.add_option(du_option.all, "Write counts for all files, not just directories", "all", 'a');
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args_parser.add_option(du_option.apparent_size, "Print apparent sizes, rather than disk usage", "apparent-size", 0);
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args_parser.add_option(du_option.human_readable, "Print human-readable sizes", "human-readable", 'h');
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args_parser.add_option(du_option.human_readable_si, "Print human-readable sizes in SI units", "si", 0);
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args_parser.add_option(du_option.max_depth, "Print the total for a directory or file only if it is N or fewer levels below the command line argument", "max-depth", 'd', "N");
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args_parser.add_option(summarize, "Display only a total for each argument", "summarize", 's');
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args_parser.add_option(du_option.threshold, "Exclude entries smaller than size if positive, or entries greater than size if negative", "threshold", 't', "size");
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args_parser.add_option(move(time_option));
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args_parser.add_option(pattern, "Exclude files that match pattern", "exclude", 0, "pattern");
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args_parser.add_option(exclude_from, "Exclude files that match any pattern in file", "exclude-from", 'X', "file");
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args_parser.add_option(du_option.one_file_system, "Don't traverse directories on different file systems", "one-file-system", 'x');
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args_parser.add_option(du_option.block_size, "Outputs file sizes as the required blocks with the given size (defaults to 1024)", "block-size", 'B', "size");
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args_parser.add_option(move(block_size_1k_option));
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args_parser.add_positional_argument(files_to_process, "File to process", "file", Core::ArgsParser::Required::No);
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args_parser.parse(arguments);
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if (summarize)
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du_option.max_depth = 0;
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if (!pattern.is_empty())
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du_option.excluded_patterns.append(pattern);
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if (!exclude_from.is_empty()) {
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auto file = TRY(Core::File::open(exclude_from, Core::File::OpenMode::Read));
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auto const buff = TRY(file->read_until_eof());
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if (!buff.is_empty()) {
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ByteString patterns = ByteString::copy(buff, Chomp);
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du_option.excluded_patterns.extend(patterns.split('\n'));
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}
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}
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for (auto const& file : files_to_process) {
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files.append(file);
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}
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if (files.is_empty()) {
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files.append(".");
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}
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return {};
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}
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u64 print_space_usage(ByteString const& path, DuOption const& du_option, size_t current_depth, Optional<dev_t> root_device)
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{
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u64 size = 0;
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auto path_stat_or_error = Core::System::lstat(path);
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if (path_stat_or_error.is_error()) {
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warnln("du: cannot stat '{}': {}", path, path_stat_or_error.release_error());
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return 0;
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}
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auto path_stat = path_stat_or_error.release_value();
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if (!root_device.has_value()) {
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root_device = path_stat.st_dev;
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}
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if (du_option.one_file_system && root_device.value() != path_stat.st_dev) {
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return 0;
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}
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VisitedFile visited_file { path_stat.st_dev, path_stat.st_ino };
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if (s_visited_files.contains(visited_file)) {
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return 0;
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}
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s_visited_files.set(visited_file);
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bool const is_directory = S_ISDIR(path_stat.st_mode);
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if (is_directory) {
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auto di = Core::DirIterator(path, Core::DirIterator::SkipParentAndBaseDir);
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if (di.has_error()) {
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auto error = di.error();
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warnln("du: cannot read directory '{}': {}", path, error);
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return 0;
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}
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while (di.has_next()) {
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auto const child_path = di.next_full_path();
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size += print_space_usage(child_path, du_option, current_depth + 1, root_device);
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}
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}
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auto const basename = LexicalPath::basename(path);
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for (auto const& pattern : du_option.excluded_patterns) {
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if (basename.matches(pattern, CaseSensitivity::CaseSensitive))
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return 0;
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}
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if (!du_option.apparent_size) {
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constexpr auto block_size = 512;
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size += path_stat.st_blocks * block_size;
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} else {
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size += path_stat.st_size;
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}
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bool is_beyond_depth = current_depth > du_option.max_depth;
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bool is_inner_file = current_depth > 0 && !is_directory;
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bool is_outside_threshold = (du_option.threshold > 0 && size < static_cast<u64>(du_option.threshold)) || (du_option.threshold < 0 && size > static_cast<u64>(-du_option.threshold));
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// All of these still count towards the full size, they are just not reported on individually.
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if (is_beyond_depth || (is_inner_file && !du_option.all) || is_outside_threshold)
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return size;
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if (du_option.human_readable) {
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out("{}", human_readable_size(size));
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} else if (du_option.human_readable_si) {
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out("{}", human_readable_size(size, AK::HumanReadableBasedOn::Base10));
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} else {
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out("{}", ceil_div(size, du_option.block_size));
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}
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if (du_option.time_type == DuOption::TimeType::NotUsed) {
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outln("\t{}", path);
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} else {
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auto time = path_stat.st_mtime;
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switch (du_option.time_type) {
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case DuOption::TimeType::Access:
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time = path_stat.st_atime;
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break;
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case DuOption::TimeType::Status:
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time = path_stat.st_ctime;
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break;
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default:
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break;
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}
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auto const formatted_time = Core::DateTime::from_timestamp(time).to_byte_string();
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outln("\t{}\t{}", formatted_time, path);
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}
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return size;
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}
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