1 /*- 2 * Copyright (c) 1992 Diomidis Spinellis. 3 * Copyright (c) 1992, 1993 4 * The Regents of the University of California. 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 /* from: static char sccsid[] = "@(#)misc.c 8.1 (Berkeley) 6/6/93"; */ 40 static char *rcsid = "$Id: misc.c,v 1.4 1994/02/03 23:44:54 cgd Exp $"; 41 #endif /* not lint */ 42 43 #include <sys/types.h> 44 45 #include <errno.h> 46 #include <regex.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <string.h> 50 51 #include "defs.h" 52 #include "extern.h" 53 54 /* 55 * malloc with result test 56 */ 57 void * 58 xmalloc(size) 59 u_int size; 60 { 61 void *p; 62 63 if ((p = malloc(size)) == NULL) 64 err(FATAL, "%s", strerror(errno)); 65 return (p); 66 } 67 68 /* 69 * realloc with result test 70 */ 71 void * 72 xrealloc(p, size) 73 void *p; 74 u_int size; 75 { 76 if (p == NULL) /* Compatibility hack. */ 77 return (xmalloc(size)); 78 79 if ((p = realloc(p, size)) == NULL) 80 err(FATAL, "%s", strerror(errno)); 81 return (p); 82 } 83 84 /* 85 * Return a string for a regular expression error passed. This is a overkill, 86 * because of the silly semantics of regerror (we can never know the size of 87 * the buffer). 88 */ 89 char * 90 strregerror(errcode, preg) 91 int errcode; 92 regex_t *preg; 93 { 94 static char *oe; 95 size_t s; 96 97 if (oe != NULL) 98 free(oe); 99 s = regerror(errcode, preg, "", 0); 100 oe = xmalloc(s); 101 (void)regerror(errcode, preg, oe, s); 102 return (oe); 103 } 104 105 #if __STDC__ 106 #include <stdarg.h> 107 #else 108 #include <varargs.h> 109 #endif 110 /* 111 * Error reporting function 112 */ 113 void 114 #if __STDC__ 115 err(int severity, const char *fmt, ...) 116 #else 117 err(severity, fmt, va_alist) 118 int severity; 119 char *fmt; 120 va_dcl 121 #endif 122 { 123 va_list ap; 124 #if __STDC__ 125 va_start(ap, fmt); 126 #else 127 va_start(ap); 128 #endif 129 (void)fprintf(stderr, "sed: "); 130 switch (severity) { 131 case WARNING: 132 case COMPILE: 133 (void)fprintf(stderr, "%lu: %s: ", linenum, fname); 134 } 135 (void)vfprintf(stderr, fmt, ap); 136 va_end(ap); 137 (void)fprintf(stderr, "\n"); 138 if (severity == WARNING) 139 return; 140 exit(1); 141 /* NOTREACHED */ 142 } 143