Annotation of src/usr.bin/sed/misc.c, Revision 1.9
1.9 ! deraadt 1: /* $OpenBSD: misc.c,v 1.8 2008/10/08 17:26:47 millert Exp $ */
1.2 deraadt 2:
1.1 deraadt 3: /*-
4: * Copyright (c) 1992 Diomidis Spinellis.
5: * Copyright (c) 1992, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * This code is derived from software contributed to Berkeley by
9: * Diomidis Spinellis of Imperial College, University of London.
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
1.5 millert 19: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: */
35:
36: #include <sys/types.h>
37:
38: #include <errno.h>
39: #include <regex.h>
40: #include <stdio.h>
41: #include <stdlib.h>
42: #include <string.h>
1.4 millert 43: #include <stdarg.h>
1.1 deraadt 44:
45: #include "defs.h"
46: #include "extern.h"
47:
48: /*
49: * malloc with result test
50: */
51: void *
1.8 millert 52: xmalloc(size_t size)
1.1 deraadt 53: {
54: void *p;
55:
56: if ((p = malloc(size)) == NULL)
57: err(FATAL, "%s", strerror(errno));
58: return (p);
59: }
60:
61: /*
62: * realloc with result test
63: */
64: void *
1.8 millert 65: xrealloc(void *p, size_t size)
1.1 deraadt 66: {
67:
68: if ((p = realloc(p, size)) == NULL)
69: err(FATAL, "%s", strerror(errno));
70: return (p);
71: }
72:
73: /*
74: * Return a string for a regular expression error passed. This is a overkill,
75: * because of the silly semantics of regerror (we can never know the size of
76: * the buffer).
77: */
78: char *
1.6 deraadt 79: strregerror(int errcode, regex_t *preg)
1.1 deraadt 80: {
81: static char *oe;
82: size_t s;
83:
1.7 tedu 84: free(oe);
1.1 deraadt 85: s = regerror(errcode, preg, "", 0);
86: oe = xmalloc(s);
87: (void)regerror(errcode, preg, oe, s);
88: return (oe);
89: }
90:
91: /*
92: * Error reporting function
93: */
94: void
95: err(int severity, const char *fmt, ...)
96: {
97: va_list ap;
1.4 millert 98:
1.1 deraadt 99: va_start(ap, fmt);
100: (void)fprintf(stderr, "sed: ");
101: switch (severity) {
102: case WARNING:
103: case COMPILE:
104: (void)fprintf(stderr, "%lu: %s: ", linenum, fname);
105: }
106: (void)vfprintf(stderr, fmt, ap);
107: va_end(ap);
108: (void)fprintf(stderr, "\n");
109: if (severity == WARNING)
110: return;
111: exit(1);
112: /* NOTREACHED */
113: }