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1 | /*- |
2 | * Copyright (c) 1992 Diomidis Spinellis. | |
ad787160 C |
3 | * Copyright (c) 1992, 1993 |
4 | * The Regents of the University of California. All rights reserved. | |
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5 | * |
6 | * This code is derived from software contributed to Berkeley by | |
7 | * Diomidis Spinellis of Imperial College, University of London. | |
8 | * | |
ad787160 C |
9 | * Redistribution and use in source and binary forms, with or without |
10 | * modification, are permitted provided that the following conditions | |
11 | * are met: | |
12 | * 1. Redistributions of source code must retain the above copyright | |
13 | * notice, this list of conditions and the following disclaimer. | |
14 | * 2. Redistributions in binary form must reproduce the above copyright | |
15 | * notice, this list of conditions and the following disclaimer in the | |
16 | * documentation and/or other materials provided with the distribution. | |
17 | * 3. All advertising materials mentioning features or use of this software | |
18 | * must display the following acknowledgement: | |
19 | * This product includes software developed by the University of | |
20 | * California, Berkeley and its contributors. | |
21 | * 4. Neither the name of the University nor the names of its contributors | |
22 | * may be used to endorse or promote products derived from this software | |
23 | * without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
26 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
27 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
28 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
30 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
31 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
32 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
33 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
34 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
35 | * SUCH DAMAGE. | |
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36 | */ |
37 | ||
38 | #ifndef lint | |
ad787160 | 39 | static char sccsid[] = "@(#)misc.c 8.1 (Berkeley) 6/6/93"; |
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40 | #endif /* not lint */ |
41 | ||
42 | #include <sys/types.h> | |
43 | ||
44 | #include <errno.h> | |
45 | #include <regex.h> | |
46 | #include <stdio.h> | |
47 | #include <stdlib.h> | |
48 | #include <string.h> | |
49 | ||
50 | #include "defs.h" | |
51 | #include "extern.h" | |
52 | ||
53 | /* | |
54 | * malloc with result test | |
55 | */ | |
56 | void * | |
57 | xmalloc(size) | |
58 | u_int size; | |
59 | { | |
60 | void *p; | |
61 | ||
62 | if ((p = malloc(size)) == NULL) | |
63 | err(FATAL, "%s", strerror(errno)); | |
64 | return (p); | |
65 | } | |
66 | ||
67 | /* | |
68 | * realloc with result test | |
69 | */ | |
70 | void * | |
71 | xrealloc(p, size) | |
72 | void *p; | |
73 | u_int size; | |
74 | { | |
75 | if (p == NULL) /* Compatibility hack. */ | |
76 | return (xmalloc(size)); | |
77 | ||
78 | if ((p = realloc(p, size)) == NULL) | |
79 | err(FATAL, "%s", strerror(errno)); | |
80 | return (p); | |
81 | } | |
82 | ||
83 | /* | |
84 | * Return a string for a regular expression error passed. This is a overkill, | |
85 | * because of the silly semantics of regerror (we can never know the size of | |
86 | * the buffer). | |
87 | */ | |
88 | char * | |
89 | strregerror(errcode, preg) | |
90 | int errcode; | |
91 | regex_t *preg; | |
92 | { | |
93 | static char *oe; | |
94 | size_t s; | |
95 | ||
96 | if (oe != NULL) | |
97 | free(oe); | |
98 | s = regerror(errcode, preg, "", 0); | |
99 | oe = xmalloc(s); | |
100 | (void)regerror(errcode, preg, oe, s); | |
101 | return (oe); | |
102 | } | |
103 | ||
104 | #if __STDC__ | |
105 | #include <stdarg.h> | |
106 | #else | |
107 | #include <varargs.h> | |
108 | #endif | |
109 | /* | |
110 | * Error reporting function | |
111 | */ | |
112 | void | |
113 | #if __STDC__ | |
114 | err(int severity, const char *fmt, ...) | |
115 | #else | |
116 | err(severity, fmt, va_alist) | |
117 | int severity; | |
118 | char *fmt; | |
119 | va_dcl | |
120 | #endif | |
121 | { | |
122 | va_list ap; | |
123 | #if __STDC__ | |
124 | va_start(ap, fmt); | |
125 | #else | |
126 | va_start(ap); | |
127 | #endif | |
128 | (void)fprintf(stderr, "sed: "); | |
129 | switch (severity) { | |
130 | case WARNING: | |
131 | case COMPILE: | |
6e6c11f3 | 132 | (void)fprintf(stderr, "%lu: %s: ", linenum, fname); |
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133 | } |
134 | (void)vfprintf(stderr, fmt, ap); | |
135 | va_end(ap); | |
136 | (void)fprintf(stderr, "\n"); | |
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137 | if (severity == WARNING) |
138 | return; | |
139 | exit(1); | |
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140 | /* NOTREACHED */ |
141 | } |