1 /* $NetBSD: misc.c,v 1.6 1997/10/19 23:05:15 lukem 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 #include <sys/cdefs.h> 41 #ifndef lint 42 #if 0 43 static char sccsid[] = "@(#)misc.c 8.1 (Berkeley) 6/6/93"; 44 #else 45 __RCSID("$NetBSD: misc.c,v 1.6 1997/10/19 23:05:15 lukem Exp $"); 46 #endif 47 #endif /* not lint */ 48 49 #include <sys/types.h> 50 51 #include <errno.h> 52 #include <regex.h> 53 #include <stdio.h> 54 #include <stdlib.h> 55 #include <string.h> 56 57 #include "defs.h" 58 #include "extern.h" 59 60 /* 61 * malloc with result test 62 */ 63 void * 64 xmalloc(size) 65 u_int size; 66 { 67 void *p; 68 69 if ((p = malloc(size)) == NULL) 70 err(FATAL, "%s", strerror(errno)); 71 return (p); 72 } 73 74 /* 75 * realloc with result test 76 */ 77 void * 78 xrealloc(p, size) 79 void *p; 80 u_int size; 81 { 82 if (p == NULL) /* Compatibility hack. */ 83 return (xmalloc(size)); 84 85 if ((p = realloc(p, size)) == NULL) 86 err(FATAL, "%s", strerror(errno)); 87 return (p); 88 } 89 90 /* 91 * Return a string for a regular expression error passed. This is a overkill, 92 * because of the silly semantics of regerror (we can never know the size of 93 * the buffer). 94 */ 95 char * 96 strregerror(errcode, preg) 97 int errcode; 98 regex_t *preg; 99 { 100 static char *oe; 101 size_t s; 102 103 if (oe != NULL) 104 free(oe); 105 s = regerror(errcode, preg, "", 0); 106 oe = xmalloc(s); 107 (void)regerror(errcode, preg, oe, s); 108 return (oe); 109 } 110 111 #if __STDC__ 112 #include <stdarg.h> 113 #else 114 #include <varargs.h> 115 #endif 116 /* 117 * Error reporting function 118 */ 119 void 120 #if __STDC__ 121 err(int severity, const char *fmt, ...) 122 #else 123 err(severity, fmt, va_alist) 124 int severity; 125 char *fmt; 126 va_dcl 127 #endif 128 { 129 va_list ap; 130 #if __STDC__ 131 va_start(ap, fmt); 132 #else 133 va_start(ap); 134 #endif 135 (void)fprintf(stderr, "sed: "); 136 switch (severity) { 137 case WARNING: 138 case COMPILE: 139 (void)fprintf(stderr, "%lu: %s: ", linenum, fname); 140 } 141 (void)vfprintf(stderr, fmt, ap); 142 va_end(ap); 143 (void)fprintf(stderr, "\n"); 144 if (severity == WARNING) 145 return; 146 exit(1); 147 /* NOTREACHED */ 148 } 149