"SfR Fresh" - the SfR Freeware/Shareware Archive 
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1 #include <stdio.h>
2 #include <stdlib.h>
3 #include <string.h>
4 #include <errno.h>
5
6 #include "imapfilter.h"
7
8
9 /*
10 * A malloc() that checks the results and dies in case of error.
11 */
12 void *
13 xmalloc(size_t size)
14 {
15 void *ptr;
16
17 ptr = (void *)malloc(size);
18
19 if (ptr == NULL)
20 fatal(ERROR_MEMALLOC,
21 "allocating memory; %s\n", strerror(errno));
22
23 return ptr;
24 }
25
26
27 /*
28 * A realloc() that checks the results and dies in case of error.
29 */
30 void *
31 xrealloc(void *ptr, size_t size)
32 {
33
34 ptr = (void *)realloc(ptr, size);
35
36 if (ptr == NULL)
37 fatal(ERROR_MEMALLOC,
38 "allocating memory; %s\n", strerror(errno));
39
40 return ptr;
41 }
42
43
44 /*
45 * A free() that dies if fed with NULL pointer.
46 */
47 void
48 xfree(void *ptr)
49 {
50
51 if (ptr == NULL)
52 fatal(ERROR_MEMALLOC,
53 "NULL pointer given as argument\n");
54 free(ptr);
55 }
56
57
58 /*
59 * A strdup() that checks the results and dies in case of error.
60 */
61 char *
62 xstrdup(const char *str)
63 {
64 char *dup;
65
66 dup = strdup(str);
67
68 if (dup == NULL)
69 fatal(ERROR_MEMALLOC, "allocating memory; %s\n",
70 strerror(errno));
71
72 return dup;
73 }
74
75
76 /*
77 * A strndup() implementation that also checks the results and dies in case of
78 * error.
79 */
80 char *
81 xstrndup(const char *str, size_t len)
82 {
83 char *dup;
84
85 dup = (char *)xmalloc((len + 1) * sizeof(char));
86
87 memcpy(dup, str, len);
88
89 dup[len] = '\0';
90
91 return dup;
92 }