sbase/basename.c

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/* See LICENSE file for copyright and license details. */
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#include <libgen.h>
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
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#include "util.h"
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static void usage(void);
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void
usage(void)
{
eprintf("usage: %s path [suffix]\n", argv0);
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}
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int
main(int argc, char *argv[])
{
char *p;
size_t off;
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ARGBEGIN {
default:
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usage();
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} ARGEND;
if (argc < 1)
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usage();
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p = strlen(argv[0]) ? basename(argv[0]) : ".";
if (argc == 2 && *p != '/') {
if (strlen(argv[1]) < strlen(p)) {
off = strlen(p) - strlen(argv[1]);
if (strcmp(&p[off], argv[1]) == 0)
p[off] = '\0';
}
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}
puts(p);
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return 0;
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}