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	pwd.c - sbase - suckless unix tools
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	---
	pwd.c (833B)
	---
	1 /* See LICENSE file for copyright and license details. */
	2 #include <sys/stat.h>
	3
	4 #include <stdio.h>
	5 #include <stdlib.h>
	6 #include <unistd.h>
	7
	8 #include "util.h"
	9
	10 static const char *
	11 getpwd(const char *cwd)
	12 {
	13 const char *pwd;
	14 struct stat cst, pst;
	15
	16 if (!(pwd = getenv("PWD")) \|\| pwd[0] != '/' \|\| stat(pwd, &pst) <…
	17 return cwd;
	18 if (stat(cwd, &cst) < 0)
	19 eprintf("stat %s:", cwd);
	20
	21 return (pst.st_dev == cst.st_dev && pst.st_ino == cst.st_ino) ? …
	22 }
	23
	24 static void
	25 usage(void)
	26 {
	27 eprintf("usage: %s [-LP]\n", argv0);
	28 }
	29
	30 int
	31 main(int argc, char *argv[])
	32 {
	33 char cwd[PATH_MAX];
	34 char mode = 'L';
	35
	36 ARGBEGIN {
	37 case 'L':
	38 case 'P':
	39 mode = ARGC();
	40 break;
	41 default:
	42 usage();
	43 } ARGEND
	44
	45 if (!getcwd(cwd, sizeof(cwd)))
	46 eprintf("getcwd:");
	47 puts((mode == 'L') ? getpwd(cwd) : cwd);
	48
	49 return fshut(stdout, "<stdout>");
	50 }