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139 lines
2.6 KiB
C
139 lines
2.6 KiB
C
/* xutil.c - Various wrapper functions to abort on error.
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*
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* Copyright © 2009 Carl Worth
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see https://www.gnu.org/licenses/ .
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*
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* Author: Carl Worth <cworth@cworth.org>
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*/
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#include <stdio.h>
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#include <string.h>
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#include "xutil.h"
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#include "error_util.h"
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void *
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xcalloc (size_t nmemb, size_t size)
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{
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void *ret;
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ret = calloc (nmemb, size);
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if (ret == NULL) {
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fprintf (stderr, "Out of memory.\n");
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exit (1);
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}
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return ret;
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}
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void *
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xmalloc (size_t size)
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{
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void *ret;
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ret = malloc (size);
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if (ret == NULL) {
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fprintf (stderr, "Out of memory.\n");
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exit (1);
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}
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return ret;
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}
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void *
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xrealloc (void *ptr, size_t size)
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{
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void *ret;
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ret = realloc (ptr, size);
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if (ret == NULL) {
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fprintf (stderr, "Out of memory.\n");
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exit (1);
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}
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return ret;
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}
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char *
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xstrdup (const char *s)
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{
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char *ret;
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ret = strdup (s);
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if (ret == NULL) {
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fprintf (stderr, "Out of memory.\n");
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exit (1);
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}
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return ret;
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}
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char *
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xstrndup (const char *s, size_t n)
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{
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char *ret;
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if (strlen (s) <= n)
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n = strlen (s);
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ret = malloc (n + 1);
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if (ret == NULL) {
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fprintf (stderr, "Out of memory.\n");
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exit (1);
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}
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memcpy (ret, s, n);
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ret[n] = '\0';
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return ret;
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}
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int
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xregcomp (regex_t *preg, const char *regex, int cflags)
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{
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int rerr;
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rerr = regcomp (preg, regex, cflags);
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if (rerr) {
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size_t error_size = regerror (rerr, preg, NULL, 0);
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char *error = xmalloc (error_size);
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regerror (rerr, preg, error, error_size);
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fprintf (stderr, "compiling regex %s: %s\n",
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regex, error);
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free (error);
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return 1;
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}
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return 0;
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}
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int
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xregexec (const regex_t *preg, const char *string,
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size_t nmatch, regmatch_t pmatch[], int eflags)
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{
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unsigned int i;
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int rerr;
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rerr = regexec (preg, string, nmatch, pmatch, eflags);
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if (rerr)
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return rerr;
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for (i = 0; i < nmatch; i++) {
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if (pmatch[i].rm_so == -1)
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INTERNAL_ERROR ("matching regex against %s: Sub-match %d not found\n",
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string, i);
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}
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return 0;
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}
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