71 lines
2.0 KiB
C++
71 lines
2.0 KiB
C++
#include <os/ArgumentParser.h>
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#include <os/Directory.h>
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#include <os/File.h>
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#include <os/FileSystem.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <sys/stat.h>
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Result<int> luna_main(int argc, char** argv)
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{
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StringView pathname;
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bool show_all { false };
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bool show_almost_all { false };
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bool long_list { false };
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os::ArgumentParser parser;
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parser.add_description("List files contained in a directory (defaults to '.', the current directory)"_sv);
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parser.add_system_program_info("ls"_sv);
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parser.add_positional_argument(pathname, "directory"_sv, "."_sv);
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parser.add_switch_argument(show_all, 'a', "all"_sv, "also list hidden files (whose filename begins with a dot)"_sv);
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parser.add_switch_argument(show_almost_all, 'A', "almost-all"_sv, "list all files except '.' and '..'"_sv);
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parser.add_switch_argument(long_list, 'l', ""_sv, "use a long listing format"_sv);
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parser.parse(argc, argv);
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Vector<String> files;
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int dirfd = AT_FDCWD;
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SharedPtr<os::Directory> dir;
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if (os::FileSystem::is_directory(pathname))
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{
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dir = TRY(os::Directory::open(pathname));
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dirfd = dir->fd();
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auto filter = os::Directory::Filter::Hidden;
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if (show_almost_all) filter = os::Directory::Filter::ParentAndBase;
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else if (show_all)
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filter = os::Directory::Filter::None;
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files = TRY(dir->list(filter));
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}
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else
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{
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auto str = TRY(String::from_string_view(pathname));
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TRY(files.try_append(move(str)));
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}
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if (!long_list)
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{
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auto list = TRY(String::join(files, " "_sv));
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os::println("%s", list.chars());
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}
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else
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{
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for (const auto& file : files)
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{
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struct stat st;
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if (fstatat(dirfd, file.chars(), &st, 0) < 0)
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{
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perror(file.chars());
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return 1;
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}
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os::println("%6o %u %4u %4u %10lu %s", st.st_mode, st.st_nlink, st.st_uid, st.st_gid, st.st_size,
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file.chars());
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}
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}
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return 0;
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}
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