aboutsummaryrefslogtreecommitdiffhomepage
path: root/xutil.c
blob: 5f98f3f7e9b83135679c801b01d898345f8c37f4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
/* xutil.c - Various wrapper functions to abort on error.
 *
 * Copyright © 2009 Carl Worth
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see http://www.gnu.org/licenses/ .
 *
 * Author: Carl Worth <cworth@cworth.org>
 */

#include "notmuch-private.h"

#include <stdio.h>

void *
xcalloc (size_t nmemb, size_t size)
{
    void *ret;

    ret = calloc (nmemb, size);
    if (ret == NULL) {
	fprintf (stderr, "Out of memory.\n");
	exit (1);
    }

    return ret;
}

void *
xmalloc (size_t size)
{
    void *ret;

    ret = malloc (size);
    if (ret == NULL) {
	fprintf (stderr, "Out of memory.\n");
	exit (1);
    }

    return ret;
}

void *
xrealloc (void *ptr, size_t size)
{
    void *ret;

    ret = realloc (ptr, size);
    if (ret == NULL) {
	fprintf (stderr, "Out of memory.\n");
	exit (1);
    }

    return ret;
}

char *
xstrdup (const char *s)
{
    char *ret;

    ret = strdup (s);
    if (ret == NULL) {
	fprintf (stderr, "Out of memory.\n");
	exit (1);
    }

    return ret;
}

char *
xstrndup (const char *s, size_t n)
{
    char *ret;

    if (strlen (s) <= n)
	n = strlen (s);

    ret = malloc (n + 1);
    if (ret == NULL) {
	fprintf (stderr, "Out of memory.\n");
	exit (1);
    }
    memcpy (ret, s, n);
    ret[n] = '\0';

    return ret;
}

void
xregcomp (regex_t *preg, const char *regex, int cflags)
{
    int rerr;

    rerr = regcomp (preg, regex, cflags);
    if (rerr) {
	size_t error_size = regerror (rerr, preg, NULL, 0);
	char *error = xmalloc (error_size);

	regerror (rerr, preg, error, error_size);
	fprintf (stderr, "Internal error: compiling regex %s: %s\n",
		 regex, error);
	exit (1);
    }
}

int
xregexec (const regex_t *preg, const char *string,
	  size_t nmatch, regmatch_t pmatch[], int eflags)
{
    unsigned int i;
    int rerr;

    rerr = regexec (preg, string, nmatch, pmatch, eflags);
    if (rerr)
	return rerr;

    for (i = 0; i < nmatch; i++) {
	if (pmatch[i].rm_so == -1) {
	    fprintf (stderr, "Internal error: matching regex against %s:"
		     "Sub-match %d not found\n",
		     string, i);
	    exit (1);
	}
    }

    return 0;
}