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Userland: Port ln to use ArgsParser

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This commit is contained in:
Robin Burchell 2019-05-17 15:28:53 +02:00 • committed by Andreas Kling
parent bffed9e3cb
commit 190111e21a
1 changed files with 15 additions and 23 deletions
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38
Userland/ln.cpp
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@ -1,34 +1,26 @@
#include <stdio.h> #include <stdio.h>
#include <errno.h> #include <errno.h>
#include <unistd.h> #include <unistd.h>
#include <getopt.h>
#include <stdlib.h> #include <stdlib.h>
#include <AK/ArgsParser.h>
[[noreturn]] static void print_usage_and_exit()
{
printf("usage: ln [-s] <target> <link-path>\n");
exit(0);
}
int main(int argc, char** argv) int main(int argc, char** argv)
{ {
bool flag_symlink = false; AK::ArgsParser args_parser("ln");
int opt;
while ((opt = getopt(argc, argv, "s")) != -1) { args_parser.add_arg("s", "create a symlink");
switch (opt) { args_parser.add_required_single_value("target");
case 's': args_parser.add_required_single_value("link-path");
flag_symlink = true;
break; AK::ArgsParserResult args = args_parser.parse(argc, (const char**)argv);
default: Vector<String> values = args.get_single_values();
print_usage_and_exit(); if (values.size() == 0) {
} args_parser.print_usage();
return 0;
} }
if ((optind + 1) >= argc) if (args.is_present("s")) {
print_usage_and_exit(); int rc = symlink(values[0].characters(), values[1].characters());
if (flag_symlink) {
int rc = symlink(argv[optind], argv[optind + 1]);
if (rc < 0) { if (rc < 0) {
perror("symlink"); perror("symlink");
return 1; return 1;
@ -36,7 +28,7 @@ int main(int argc, char** argv)
return 0; return 0;
} }
int rc = link(argv[1], argv[2]); int rc = link(values[0].characters(), values[1].characters());
if (rc < 0) { if (rc < 0) {
perror("link"); perror("link");
return 1; return 1;