1 /* $NetBSD: misc.c,v 1.7 2002/06/14 00:41:42 wiz 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 1.7 2002/06/14 00:41:42 wiz Exp $"); 46 #endif 47 #endif /* not lint */ 48 49 #include <sys/types.h> 50 51 #include <errno.h> 52 #include <regex.h> 53 #include <stdarg.h> 54 #include <stdio.h> 55 #include <stdlib.h> 56 #include <string.h> 57 58 #include "defs.h" 59 #include "extern.h" 60 61 /* 62 * malloc with result test 63 */ 64 void * 65 xmalloc(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(void *p, u_int size) 79 { 80 if (p == NULL) /* Compatibility hack. */ 81 return (xmalloc(size)); 82 83 if ((p = realloc(p, size)) == NULL) 84 err(FATAL, "%s", strerror(errno)); 85 return (p); 86 } 87 88 /* 89 * Return a string for a regular expression error passed. This is a overkill, 90 * because of the silly semantics of regerror (we can never know the size of 91 * the buffer). 92 */ 93 char * 94 strregerror(int errcode, 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 /* 108 * Error reporting function 109 */ 110 void 111 err(int severity, const char *fmt, ...) 112 { 113 va_list ap; 114 115 va_start(ap, fmt); 116 (void)fprintf(stderr, "sed: "); 117 switch (severity) { 118 case WARNING: 119 case COMPILE: 120 (void)fprintf(stderr, "%lu: %s: ", linenum, fname); 121 } 122 (void)vfprintf(stderr, fmt, ap); 123 va_end(ap); 124 (void)fprintf(stderr, "\n"); 125 if (severity == WARNING) 126 return; 127 exit(1); 128 /* NOTREACHED */ 129 } 130