43 lines
1.2 KiB
C++
43 lines
1.2 KiB
C++
#include <os/ArgumentParser.h>
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#include <dirent.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <unistd.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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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_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.parse(argc, argv);
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DIR* dp = opendir(pathname.chars());
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if (!dp)
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{
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perror("opendir");
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return 1;
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}
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int first_ent = 1;
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do {
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struct dirent* ent = readdir(dp);
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if (!ent) break;
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if (show_almost_all && (!strcmp(ent->d_name, ".") || !strcmp(ent->d_name, ".."))) continue;
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if (!show_all && !show_almost_all && *ent->d_name == '.') continue;
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printf(first_ent ? "%s" : " %s", ent->d_name);
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first_ent = 0;
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} while (1);
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putchar('\n');
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closedir(dp);
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return 0;
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}
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