Luna/apps/ls.cpp
apio a164dcc160
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libos: Add libos + very basic ArgumentParser
libluna but for stuff that interests only userspace, like an argument parser or files or stuff like that.
2023-03-29 18:27:02 +02:00

36 lines
661 B
C++

#include <os/ArgumentParser.h>
#include <dirent.h>
#include <fcntl.h>
#include <stdio.h>
#include <unistd.h>
int main(int argc, char** argv)
{
StringView pathname;
ArgumentParser parser;
parser.add_positional_argument(pathname, "directory", false, "/");
parser.parse(argc, argv);
DIR* dp = opendir(pathname.chars());
if (!dp)
{
perror("opendir");
return 1;
}
int first_ent = 1;
do {
struct dirent* ent = readdir(dp);
if (!ent) break;
printf(first_ent ? "%s" : " %s", ent->d_name);
first_ent = 0;
} while (1);
putchar('\n');
closedir(dp);
return 0;
}