| 1 | /*- |
| 2 | * Copyright (c) 1992 Diomidis Spinellis. |
| 3 | * Copyright (c) 1992 The Regents of the University of California. |
| 4 | * All rights reserved. |
| 5 | * |
| 6 | * This code is derived from software contributed to Berkeley by |
| 7 | * Diomidis Spinellis of Imperial College, University of London. |
| 8 | * |
| 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. |
| 36 | */ |
| 37 | |
| 38 | #ifndef lint |
| 39 | static char sccsid[] = "@(#)misc.c 5.3 (Berkeley) 8/26/92"; |
| 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: |
| 132 | (void)fprintf(stderr, "%lu: %s: ", linenum, fname); |
| 133 | } |
| 134 | (void)vfprintf(stderr, fmt, ap); |
| 135 | va_end(ap); |
| 136 | (void)fprintf(stderr, "\n"); |
| 137 | if (severity == WARNING) |
| 138 | return; |
| 139 | exit(1); |
| 140 | /* NOTREACHED */ |
| 141 | } |