1 /*- 2 * Copyright (c) 1992, 1993, 1994 Henry Spencer. 3 * Copyright (c) 1992, 1993, 1994 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Henry Spencer. 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 * @(#)regerror.c 8.4 (Berkeley) 3/20/94 38 */ 39 40 #if defined(LIBC_SCCS) && !defined(lint) 41 static char sccsid[] = "@(#)regerror.c 8.4 (Berkeley) 3/20/94"; 42 #endif /* LIBC_SCCS and not lint */ 43 44 #include <sys/types.h> 45 #include <stdio.h> 46 #include <string.h> 47 #ifdef __minix_vmd 48 #include <bsd/asciictype.h> 49 #else 50 #include <ctype.h> 51 #endif 52 #include <stdlib.h> 53 #include <regex.h> 54 55 #include "utils.h" 56 57 /* ========= begin header generated by ./mkh ========= */ 58 #ifdef __cplusplus 59 extern "C" { 60 #endif 61 62 /* === regerror.c === */ 63 static char *regatoi(const regex_t *preg, char *localbuf); 64 65 #ifdef __cplusplus 66 } 67 #endif 68 /* ========= end header generated by ./mkh ========= */ 69 /* 70 = #define REG_NOMATCH 1 71 = #define REG_BADPAT 2 72 = #define REG_ECOLLATE 3 73 = #define REG_ECTYPE 4 74 = #define REG_EESCAPE 5 75 = #define REG_ESUBREG 6 76 = #define REG_EBRACK 7 77 = #define REG_EPAREN 8 78 = #define REG_EBRACE 9 79 = #define REG_BADBR 10 80 = #define REG_ERANGE 11 81 = #define REG_ESPACE 12 82 = #define REG_BADRPT 13 83 = #define REG_EMPTY 14 84 = #define REG_ASSERT 15 85 = #define REG_INVARG 16 86 = #define REG_ATOI 255 // convert name to number (!) 87 = #define REG_ITOA 0400 // convert number to name (!) 88 */ 89 static struct rerr { 90 int code; 91 char *name; 92 char *explain; 93 } rerrs[] = { 94 REG_NOMATCH, "REG_NOMATCH", "regexec() failed to match", 95 REG_BADPAT, "REG_BADPAT", "invalid regular expression", 96 REG_ECOLLATE, "REG_ECOLLATE", "invalid collating element", 97 REG_ECTYPE, "REG_ECTYPE", "invalid character class", 98 REG_EESCAPE, "REG_EESCAPE", "trailing backslash (\\)", 99 REG_ESUBREG, "REG_ESUBREG", "invalid backreference number", 100 REG_EBRACK, "REG_EBRACK", "brackets ([ ]) not balanced", 101 REG_EPAREN, "REG_EPAREN", "parentheses not balanced", 102 REG_EBRACE, "REG_EBRACE", "braces not balanced", 103 REG_BADBR, "REG_BADBR", "invalid repetition count(s)", 104 REG_ERANGE, "REG_ERANGE", "invalid character range", 105 REG_ESPACE, "REG_ESPACE", "out of memory", 106 REG_BADRPT, "REG_BADRPT", "repetition-operator operand invalid", 107 REG_EMPTY, "REG_EMPTY", "empty (sub)expression", 108 REG_ASSERT, "REG_ASSERT", "\"can't happen\" -- you found a bug", 109 REG_INVARG, "REG_INVARG", "invalid argument to regex routine", 110 0, "", "*** unknown regexp error code ***", 111 }; 112 113 /* 114 - regerror - the interface to error numbers 115 = extern size_t regerror(int, const regex_t *, char *, size_t); 116 */ 117 /* ARGSUSED */ 118 size_t 119 regerror(errcode, preg, errbuf, errbuf_size) 120 int errcode; 121 const regex_t *preg; 122 char *errbuf; 123 size_t errbuf_size; 124 { 125 register struct rerr *r; 126 register size_t len; 127 register int target = errcode &~ REG_ITOA; 128 register char *s; 129 char convbuf[50]; 130 131 if (errcode == REG_ATOI) 132 s = regatoi(preg, convbuf); 133 else { 134 for (r = rerrs; r->code != 0; r++) 135 if (r->code == target) 136 break; 137 138 if (errcode®_ITOA) { 139 if (r->code != 0) 140 (void) strcpy(convbuf, r->name); 141 else 142 sprintf(convbuf, "REG_0x%x", target); 143 assert(strlen(convbuf) < sizeof(convbuf)); 144 s = convbuf; 145 } else 146 s = r->explain; 147 } 148 149 len = strlen(s) + 1; 150 if (errbuf_size > 0) { 151 if (errbuf_size > len) 152 (void) strcpy(errbuf, s); 153 else { 154 (void) strncpy(errbuf, s, errbuf_size-1); 155 errbuf[errbuf_size-1] = '\0'; 156 } 157 } 158 159 return(len); 160 } 161 162 /* 163 - regatoi - internal routine to implement REG_ATOI 164 == static char *regatoi(const regex_t *preg, char *localbuf); 165 */ 166 static char * 167 regatoi(preg, localbuf) 168 const regex_t *preg; 169 char *localbuf; 170 { 171 register struct rerr *r; 172 register size_t siz; 173 register char *p; 174 175 for (r = rerrs; r->code != 0; r++) 176 if (strcmp(r->name, preg->re_endp) == 0) 177 break; 178 if (r->code == 0) 179 return("0"); 180 181 sprintf(localbuf, "%d", r->code); 182 return(localbuf); 183 } 184 185 /* 186 * $PchId: regerror.c,v 1.2 1996/03/12 19:10:15 philip Exp $ 187 */ 188