1 /* $OpenBSD: misc.c,v 1.5 2003/06/03 02:56:16 millert 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. Neither the name of the University nor the names of its contributors 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 #ifndef lint 37 /* from: static char sccsid[] = "@(#)misc.c 8.1 (Berkeley) 6/6/93"; */ 38 static char *rcsid = "$OpenBSD: misc.c,v 1.5 2003/06/03 02:56:16 millert Exp $"; 39 #endif /* not lint */ 40 41 #include <sys/types.h> 42 43 #include <errno.h> 44 #include <regex.h> 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <string.h> 48 #include <stdarg.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 /* 105 * Error reporting function 106 */ 107 void 108 err(int severity, const char *fmt, ...) 109 { 110 va_list ap; 111 112 va_start(ap, fmt); 113 (void)fprintf(stderr, "sed: "); 114 switch (severity) { 115 case WARNING: 116 case COMPILE: 117 (void)fprintf(stderr, "%lu: %s: ", linenum, fname); 118 } 119 (void)vfprintf(stderr, fmt, ap); 120 va_end(ap); 121 (void)fprintf(stderr, "\n"); 122 if (severity == WARNING) 123 return; 124 exit(1); 125 /* NOTREACHED */ 126 } 127