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Userland: Use Core::ArgsParser for 'chgrp'

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Linus Groh 2020-08-05 22:37:59 +02:00 committed by Andreas Kling
parent c8d690d840
commit 14db94f44b
Notes: sideshowbarker 2024-07-19 04:11:20 +09:00 
Author: https://github.com/linusg
Commit: https://github.com/SerenityOS/serenity/commit/14db94f44be
Pull-request: https://github.com/SerenityOS/serenity/pull/3019
1 changed files with 13 additions and 11 deletions
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24
Userland/chgrp.cpp
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@ -26,6 +26,7 @@
#include <AK/Optional.h>
#include <AK/String.h>
#include <LibCore/ArgsParser.h>
#include <grp.h>
#include <pwd.h>
#include <stdio.h>
@ -40,33 +41,34 @@ int main(int argc, char** argv)
return 1;
}
if (argc < 2) {
printf("usage: chgrp <gid> <path>\n");
return 0;
}
const char* gid_arg = nullptr;
const char* path = nullptr;
Core::ArgsParser args_parser;
args_parser.add_positional_argument(gid_arg, "Group ID", "gid");
args_parser.add_positional_argument(path, "Path to file", "path");
args_parser.parse(argc, argv);
gid_t new_gid = -1;
auto gid_arg = String(argv[1]);
if (gid_arg.is_empty()) {
if (String(gid_arg).is_empty()) {
fprintf(stderr, "Empty gid option\n");
return 1;
}
auto number = gid_arg.to_uint();
auto number = String(gid_arg).to_uint();
if (number.has_value()) {
new_gid = number.value();
} else {
auto* group = getgrnam(gid_arg.characters());
auto* group = getgrnam(gid_arg);
if (!group) {
fprintf(stderr, "Unknown group '%s'\n", gid_arg.characters());
fprintf(stderr, "Unknown group '%s'\n", gid_arg);
return 1;
}
new_gid = group->gr_gid;
}
int rc = chown(argv[2], -1, new_gid);
int rc = chown(path, -1, new_gid);
if (rc < 0) {
perror("chgrp");
return 1;