ladybird/Userland/ls.cpp
Andreas Kling 97726862dd Add basic symlink support.
- sys$readlink + readlink()
- Add a /proc/PID/exe symlink to the process's executable.
- Print symlink contents in ls output.
- Some work on plumbing options into VFS::open().
2018-10-28 14:11:51 +01:00

97 lines
2.6 KiB
C++

#include <LibC/stdio.h>
#include <LibC/unistd.h>
#include <LibC/dirent.h>
#include <LibC/errno.h>
#include <LibC/string.h>
int main(int c, char** v)
{
bool colorize = true;
DIR* dirp = opendir(".");
if (!dirp) {
perror("opendir failed");
return 1;
}
char pathbuf[256];
while (auto* de = readdir(dirp)) {
sprintf(pathbuf, "%s", de->d_name);
stat st;
int rc = lstat(pathbuf, &st);
if (rc == -1) {
printf("lstat(%s) failed: %s\n", pathbuf, strerror(errno));
return 2;
}
printf("%08u ", de->d_ino);
if (S_ISDIR(st.st_mode))
printf("d");
else if (S_ISLNK(st.st_mode))
printf("l");
else if (S_ISBLK(st.st_mode))
printf("b");
else if (S_ISCHR(st.st_mode))
printf("c");
else if (S_ISFIFO(st.st_mode))
printf("f");
else if (S_ISREG(st.st_mode))
printf("-");
else
printf("?");
printf("%c%c%c%c%c%c%c%c",
st.st_mode & S_IRUSR ? 'r' : '-',
st.st_mode & S_IWUSR ? 'w' : '-',
st.st_mode & S_IXUSR ? 'x' : '-',
st.st_mode & S_IRGRP ? 'r' : '-',
st.st_mode & S_IWGRP ? 'w' : '-',
st.st_mode & S_IXGRP ? 'x' : '-',
st.st_mode & S_IROTH ? 'r' : '-',
st.st_mode & S_IWOTH ? 'w' : '-'
);
if (st.st_mode & S_ISVTX)
printf("t");
else
printf("%c", st.st_mode & S_IXOTH ? 'x' : '-');
printf(" %4u %4u", st.st_uid, st.st_gid);
printf(" %10u ", st.st_size);
const char* beginColor = "";
const char* endColor = "";
if (colorize) {
if (S_ISLNK(st.st_mode))
beginColor = "\033[36;1m";
else if (S_ISDIR(st.st_mode))
beginColor = "\033[34;1m";
else if (st.st_mode & 0111)
beginColor = "\033[32;1m";
else if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode))
beginColor = "\033[33;1m";
endColor = "\033[0m";
}
printf("%s%s%s", beginColor, de->d_name, endColor);
if (S_ISLNK(st.st_mode)) {
char linkbuf[256];
ssize_t nread = readlink(pathbuf, linkbuf, sizeof(linkbuf));
if (nread < 0) {
perror("readlink failed");
} else {
printf(" -> %s", linkbuf);
}
} else if (S_ISDIR(st.st_mode)) {
printf("/");
} else if (st.st_mode & 0111) {
printf("*");
}
printf("\n");
}
return 0;
}