53 lines
825 B
C
53 lines
825 B
C
/* See LICENSE file for copyright and license details. */
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <sys/stat.h>
|
|
|
|
#include "util.h"
|
|
|
|
static const char *getpwd(const char *cwd);
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
eprintf("usage: %s [-LP]\n", argv0);
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
char *cwd;
|
|
char mode = 'L';
|
|
|
|
ARGBEGIN {
|
|
case 'L':
|
|
case 'P':
|
|
mode = ARGC();
|
|
break;
|
|
default:
|
|
usage();
|
|
} ARGEND;
|
|
|
|
cwd = agetcwd();
|
|
puts((mode == 'L') ? getpwd(cwd) : cwd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const char *
|
|
getpwd(const char *cwd)
|
|
{
|
|
const char *pwd;
|
|
struct stat cst, pst;
|
|
|
|
if (!(pwd = getenv("PWD")) || pwd[0] != '/' || stat(pwd, &pst) < 0)
|
|
return cwd;
|
|
if (stat(cwd, &cst) < 0)
|
|
eprintf("stat %s:", cwd);
|
|
if (pst.st_dev == cst.st_dev && pst.st_ino == cst.st_ino)
|
|
return pwd;
|
|
else
|
|
return cwd;
|
|
}
|