1 /* $OpenBSD: misc.c,v 1.3 1997/07/25 21:05:41 mickey Exp $ */ 2 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. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 */ 39 40 #ifndef lint 41 /* from: static char sccsid[] = "@(#)misc.c 8.1 (Berkeley) 6/6/93"; */ 42 static char *rcsid = "$OpenBSD: misc.c,v 1.3 1997/07/25 21:05:41 mickey Exp $"; 43 #endif /* not lint */ 44 45 #include <sys/types.h> 46 47 #include <errno.h> 48 #include <regex.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 53 #include "defs.h" 54 #include "extern.h" 55 56 /* 57 * malloc with result test 58 */ 59 void * 60 xmalloc(size) 61 u_int size; 62 { 63 void *p; 64 65 if ((p = malloc(size)) == NULL) 66 err(FATAL, "%s", strerror(errno)); 67 return (p); 68 } 69 70 /* 71 * realloc with result test 72 */ 73 void * 74 xrealloc(p, size) 75 void *p; 76 u_int size; 77 { 78 if (p == NULL) /* Compatibility hack. */ 79 return (xmalloc(size)); 80 81 if ((p = realloc(p, size)) == NULL) 82 err(FATAL, "%s", strerror(errno)); 83 return (p); 84 } 85 86 /* 87 * Return a string for a regular expression error passed. This is a overkill, 88 * because of the silly semantics of regerror (we can never know the size of 89 * the buffer). 90 */ 91 char * 92 strregerror(errcode, preg) 93 int errcode; 94 regex_t *preg; 95 { 96 static char *oe; 97 size_t s; 98 99 if (oe != NULL) 100 free(oe); 101 s = regerror(errcode, preg, "", 0); 102 oe = xmalloc(s); 103 (void)regerror(errcode, preg, oe, s); 104 return (oe); 105 } 106 107 #ifdef __STDC__ 108 #include <stdarg.h> 109 #else 110 #include <varargs.h> 111 #endif 112 /* 113 * Error reporting function 114 */ 115 void 116 #ifdef __STDC__ 117 err(int severity, const char *fmt, ...) 118 #else 119 err(severity, fmt, va_alist) 120 int severity; 121 char *fmt; 122 va_dcl 123 #endif 124 { 125 va_list ap; 126 #ifdef __STDC__ 127 va_start(ap, fmt); 128 #else 129 va_start(ap); 130 #endif 131 (void)fprintf(stderr, "sed: "); 132 switch (severity) { 133 case WARNING: 134 case COMPILE: 135 (void)fprintf(stderr, "%lu: %s: ", linenum, fname); 136 } 137 (void)vfprintf(stderr, fmt, ap); 138 va_end(ap); 139 (void)fprintf(stderr, "\n"); 140 if (severity == WARNING) 141 return; 142 exit(1); 143 /* NOTREACHED */ 144 } 145