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 static char sccsid[] = "@(#)misc.c 8.1 (Berkeley) 6/6/93"; 40 #endif /* not lint */ 41 42 #include <sys/types.h> 43 44 #include <errno.h> 45 #include <regex.h> 46 #include <stdio.h> 47 #include <stdlib.h> 48 #include <string.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 #if __STDC__ 105 #include <stdarg.h> 106 #else 107 #include <varargs.h> 108 #endif 109 /* 110 * Error reporting function 111 */ 112 void 113 #if __STDC__ 114 err(int severity, const char *fmt, ...) 115 #else 116 err(severity, fmt, va_alist) 117 int severity; 118 char *fmt; 119 va_dcl 120 #endif 121 { 122 va_list ap; 123 #if __STDC__ 124 va_start(ap, fmt); 125 #else 126 va_start(ap); 127 #endif 128 (void)fprintf(stderr, "sed: "); 129 switch (severity) { 130 case WARNING: 131 case COMPILE: 132 (void)fprintf(stderr, "%lu: %s: ", linenum, fname); 133 } 134 (void)vfprintf(stderr, fmt, ap); 135 va_end(ap); 136 (void)fprintf(stderr, "\n"); 137 if (severity == WARNING) 138 return; 139 exit(1); 140 /* NOTREACHED */ 141 } 142