sbase

suckless unix tools
git clone git://git.suckless.org/sbase
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basename.c (607B)

      1 /* See LICENSE file for copyright and license details. */
      2 #include <libgen.h>
      3 #include <stdio.h>
      4 #include <string.h>
      5 
      6 #include "util.h"
      7 
      8 static void
      9 usage(void)
     10 {
     11 	eprintf("usage: %s path [suffix]\n", argv0);
     12 }
     13 
     14 int
     15 main(int argc, char *argv[])
     16 {
     17 	ssize_t off;
     18 	size_t slen;
     19 	char *p = "";
     20 
     21 	ARGBEGIN {
     22 	default:
     23 		usage();
     24 	} ARGEND
     25 
     26 	if (argc != 1 && argc != 2)
     27 		usage();
     28 
     29 	if (argv[0][0])
     30 		p = basename(argv[0]);
     31 	if (argc == 2 && (slen = strlen(argv[1])) > 0) {
     32 		off = strlen(p) - slen;
     33 		if (off > 0 && !strcmp(p + off, argv[1]))
     34 			p[off] = '\0';
     35 	}
     36 	puts(p);
     37 
     38 	return fshut(stdout, "<stdout>");
     39 }