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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifndef XPG4
#include <unistd.h>
#include <regex.h>
#include <libintl.h>
#endif
int
main(int argc, char **argv)
{
char *p;
char *string;
char *suffix;
#ifndef XPG4
int r;
char suf_buf[256];
char *suf_pat;
size_t suf_len;
regex_t reg;
regmatch_t pmatch[2];
#endif
/*
* For better performance, defer the setlocale()/textdomain()
* calls until they get really required.
*/
#if !defined(TEXT_DOMAIN)
#define TEXT_DOMAIN "SYS_TEST"
#endif
if (argc == 1) {
(void) puts(".");
return (0);
}
#ifdef XPG4
if (strcmp(argv[1], "--") == 0) {
argv++;
argc--;
if (argc == 1) {
(void) puts(".");
return (0);
}
}
#endif
if (argc > 3) {
(void) setlocale(LC_ALL, "");
(void) textdomain(TEXT_DOMAIN);
(void) fputs(gettext("Usage: basename string [ suffix ]\n"),
stderr);
return (1);
}
string = argv[1];
suffix = (argc == 2) ? NULL : argv[2];
if (*string == '\0') {
(void) puts(".");
return (0);
}
/* remove trailing slashes */
p = string + strlen(string) - 1;
while (p >= string && *p == '/')
*p-- = '\0';
if (*string == '\0') {
(void) puts("/");
return (0);
}
/* skip to one past last slash */
if ((p = strrchr(string, '/')) != NULL)
string = p + 1;
if (suffix == NULL) {
(void) puts(string);
return (0);
}
#ifdef XPG4
/*
* if a suffix is present and is not the same as the remaining
* string and is identical to the last characters in the remaining
* string, remove those characters from the string.
*/
if (strcmp(string, suffix) != 0) {
p = string + strlen(string) - strlen(suffix);
if (strcmp(p, suffix) == 0)
*p = '\0';
}
(void) puts(string);
return (0);
#else
(void) setlocale(LC_ALL, "");
(void) textdomain(TEXT_DOMAIN);
suf_len = 6 + strlen(suffix) + 1 + 1; /* \(.*\)suffix$ */
if (suf_len > sizeof (suf_buf)) {
suf_pat = malloc(suf_len);
if (suf_pat == NULL) {
(void) fputs("malloc failed\n", stderr);
return (1);
}
} else {
suf_pat = suf_buf;
}
(void) strcpy(suf_pat, "\\(.*\\)");
(void) strcpy(suf_pat + 6, suffix);
*(suf_pat + suf_len - 1 - 1) = '$';
*(suf_pat + suf_len - 1) = '\0';
r = regcomp(®, suf_pat, 0);
if (r != 0) {
(void) fprintf(stderr,
"Internal error: regcomp failed for \"%s\"\n",
suf_pat);
return (1);
}
r = regexec(®, string, 2, pmatch, 0);
if (r == 0) {
if (pmatch[0].rm_so == (regoff_t)-1 ||
pmatch[1].rm_so == (regoff_t)-1 ||
pmatch[1].rm_so != 0) {
(void) fprintf(stderr, "Internal error: regexec did "
"not set sub-expression for:\n");
(void) fprintf(stderr, "path: \"%s\"\n", string);
(void) fprintf(stderr, "pattern: \"%s\"", suf_pat);
return (1);
}
if (pmatch[1].rm_so == pmatch[1].rm_eo) {
/* a null string matched */
(void) printf("%s\n", string);
return (0);
}
string[pmatch[1].rm_eo] = '\0';
}
(void) puts(string);
return (0);
#endif
}
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