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ls: Add the -l flag

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This commit is contained in:
apio 2023-05-01 20:01:05 +02:00
parent 2572d5b238
commit 53ec448e33
Signed by: apio
GPG Key ID: B8A7D06E42258954
1 changed files with 46 additions and 8 deletions
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42
apps/ls.cpp
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@ -1,12 +1,18 @@
#include <os/ArgumentParser.h>
#include <os/Directory.h>
#include <os/File.h>
#include <os/FileSystem.h>
#include <fcntl.h>
#include <stdio.h>
#include <sys/stat.h>
Result<int> luna_main(int argc, char** argv)
{
StringView pathname;
bool show_all { false };
bool show_almost_all { false };
bool long_list { false };
os::ArgumentParser parser;
parser.add_description("List files contained in a directory (defaults to '.', the current directory)"_sv);
@ -14,19 +20,51 @@ Result<int> luna_main(int argc, char** argv)
parser.add_positional_argument(pathname, "directory"_sv, "."_sv);
parser.add_switch_argument(show_all, 'a', "all"_sv, "also list hidden files (whose filename begins with a dot)"_sv);
parser.add_switch_argument(show_almost_all, 'A', "almost-all"_sv, "list all files except '.' and '..'"_sv);
parser.add_switch_argument(long_list, 'l', ""_sv, "use a long listing format"_sv);
parser.parse(argc, argv);
auto dir = TRY(os::Directory::open(pathname));
Vector<String> files;
int dirfd = AT_FDCWD;
SharedPtr<os::Directory> dir;
if (os::FileSystem::is_directory(pathname))
{
dir = TRY(os::Directory::open(pathname));
dirfd = dir->fd();
auto filter = os::Directory::Filter::Hidden;
if (show_almost_all) filter = os::Directory::Filter::ParentAndBase;
else if (show_all)
filter = os::Directory::Filter::None;
auto files = TRY(dir->list(filter));
files = TRY(dir->list(filter));
}
else
{
auto str = TRY(String::from_cstring(pathname.chars()));
TRY(files.try_append(move(str)));
}
if (!long_list)
{
auto list = TRY(String::join(files, " "_sv));
os::println("%s", list.chars());
}
else
{
for (const auto& file : files)
{
struct stat st;
if (fstatat(dirfd, file.chars(), &st, 0) < 0)
{
perror(file.chars());
return 1;
}
os::println("%6o %u %4u %4u %10lu %s", st.st_mode, st.st_nlink, st.st_uid, st.st_gid, st.st_size,
file.chars());
}
}
return 0;
}