1 /* $NetBSD: regerror.c,v 1.2 2008/12/05 22:51:43 christos Exp $ */
4 * Copyright (c) 1992, 1993, 1994 Henry Spencer.
5 * Copyright (c) 1992, 1993, 1994
6 * The Regents of the University of California. All rights reserved.
8 * This code is derived from software contributed to Berkeley by
9 * Henry Spencer of the University of Toronto.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
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.
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
39 * @(#)regerror.c 8.3 (Berkeley) 3/19/94
42 #if defined(LIBC_SCCS) && !defined(lint)
43 static char sccsid[] = "@(#)regerror.c 8.3 (Berkeley) 3/19/94";
44 #endif /* LIBC_SCCS and not lint */
46 #include <sys/types.h>
56 /* ========= begin header generated by ./mkh ========= */
61 /* === regerror.c === */
62 static char *regatoi __P((const regex_t *preg, char *localbuf));
67 /* ========= end header generated by ./mkh ========= */
69 = #define REG_NOMATCH 1
70 = #define REG_BADPAT 2
71 = #define REG_ECOLLATE 3
72 = #define REG_ECTYPE 4
73 = #define REG_EESCAPE 5
74 = #define REG_ESUBREG 6
75 = #define REG_EBRACK 7
76 = #define REG_EPAREN 8
77 = #define REG_EBRACE 9
78 = #define REG_BADBR 10
79 = #define REG_ERANGE 11
80 = #define REG_ESPACE 12
81 = #define REG_BADRPT 13
82 = #define REG_EMPTY 14
83 = #define REG_ASSERT 15
84 = #define REG_INVARG 16
85 = #define REG_ATOI 255 // convert name to number (!)
86 = #define REG_ITOA 0400 // convert number to name (!)
93 { REG_NOMATCH, "REG_NOMATCH", "regexec() failed to match" },
94 { REG_BADPAT, "REG_BADPAT", "invalid regular expression" },
95 { REG_ECOLLATE, "REG_ECOLLATE", "invalid collating element" },
96 { REG_ECTYPE, "REG_ECTYPE", "invalid character class" },
97 { REG_EESCAPE, "REG_EESCAPE", "trailing backslash (\\)" },
98 { REG_ESUBREG, "REG_ESUBREG", "invalid backreference number" },
99 { REG_EBRACK, "REG_EBRACK", "brackets ([ ]) not balanced" },
100 { REG_EPAREN, "REG_EPAREN", "parentheses not balanced" },
101 { REG_EBRACE, "REG_EBRACE", "braces not balanced" },
102 { REG_BADBR, "REG_BADBR", "invalid repetition count(s)" },
103 { REG_ERANGE, "REG_ERANGE", "invalid character range" },
104 { REG_ESPACE, "REG_ESPACE", "out of memory" },
105 { REG_BADRPT, "REG_BADRPT", "repetition-operator operand invalid" },
106 { REG_EMPTY, "REG_EMPTY", "empty (sub)expression" },
107 { REG_ASSERT, "REG_ASSERT", "\"can't happen\" -- you found a bug" },
108 { REG_INVARG, "REG_INVARG", "invalid argument to regex routine" },
109 { 0, "", "*** unknown regexp error code ***" },
113 - regerror - the interface to error numbers
114 = extern size_t regerror(int, const regex_t *, char *, size_t);
118 regerror(int errcode, const regex_t *preg, char *errbuf, size_t errbuf_size)
120 register struct rerr *r;
122 register int target = errcode &~ REG_ITOA;
123 register const char *s;
126 if (errcode == REG_ATOI)
127 s = regatoi(preg, convbuf);
129 for (r = rerrs; r->code != 0; r++)
130 if (r->code == target)
133 if (errcode®_ITOA) {
135 assert(strlen(r->name) < sizeof(convbuf));
136 (void) strlcpy(convbuf, r->name, sizeof(convbuf));
138 (void) snprintf(convbuf, sizeof(convbuf),
146 if (errbuf_size > 0) {
147 (void) strlcpy(errbuf, s, errbuf_size);
154 - regatoi - internal routine to implement REG_ATOI
155 == static char *regatoi(const regex_t *preg, char *localbuf);
158 regatoi(const regex_t *preg, char *localbuf)
160 #if 0 /* we don't seem to use this and it gives a warning. */
161 register struct rerr *r;
165 for (r = rerrs; r->code != 0; r++)
166 if (strcmp(r->name, preg->re_endp) == 0)
171 sprintf(localbuf, "%d", r->code);