source: trunk/minix/lib/regex/regerror.c@ 10

Last change on this file since 10 was 9, checked in by Mattia Monga, 13 years ago

Minix 3.1.2a

File size: 5.5 KB
Line 
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)
41static 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 <limits.h>
53#include <stdlib.h>
54#include <regex.h>
55
56#include "utils.h"
57
58/* ========= begin header generated by ./mkh ========= */
59#ifdef __cplusplus
60extern "C" {
61#endif
62
63/* === regerror.c === */
64static char *regatoi(const regex_t *preg, char *localbuf);
65
66#ifdef __cplusplus
67}
68#endif
69/* ========= end header generated by ./mkh ========= */
70/*
71 = #define REG_NOMATCH 1
72 = #define REG_BADPAT 2
73 = #define REG_ECOLLATE 3
74 = #define REG_ECTYPE 4
75 = #define REG_EESCAPE 5
76 = #define REG_ESUBREG 6
77 = #define REG_EBRACK 7
78 = #define REG_EPAREN 8
79 = #define REG_EBRACE 9
80 = #define REG_BADBR 10
81 = #define REG_ERANGE 11
82 = #define REG_ESPACE 12
83 = #define REG_BADRPT 13
84 = #define REG_EMPTY 14
85 = #define REG_ASSERT 15
86 = #define REG_INVARG 16
87 = #define REG_ATOI 255 // convert name to number (!)
88 = #define REG_ITOA 0400 // convert number to name (!)
89 */
90static struct rerr {
91 int code;
92 char *name;
93 char *explain;
94} rerrs[] = {
95 REG_NOMATCH, "REG_NOMATCH", "regexec() failed to match",
96 REG_BADPAT, "REG_BADPAT", "invalid regular expression",
97 REG_ECOLLATE, "REG_ECOLLATE", "invalid collating element",
98 REG_ECTYPE, "REG_ECTYPE", "invalid character class",
99 REG_EESCAPE, "REG_EESCAPE", "trailing backslash (\\)",
100 REG_ESUBREG, "REG_ESUBREG", "invalid backreference number",
101 REG_EBRACK, "REG_EBRACK", "brackets ([ ]) not balanced",
102 REG_EPAREN, "REG_EPAREN", "parentheses not balanced",
103 REG_EBRACE, "REG_EBRACE", "braces not balanced",
104 REG_BADBR, "REG_BADBR", "invalid repetition count(s)",
105 REG_ERANGE, "REG_ERANGE", "invalid character range",
106 REG_ESPACE, "REG_ESPACE", "out of memory",
107 REG_BADRPT, "REG_BADRPT", "repetition-operator operand invalid",
108 REG_EMPTY, "REG_EMPTY", "empty (sub)expression",
109 REG_ASSERT, "REG_ASSERT", "\"can't happen\" -- you found a bug",
110 REG_INVARG, "REG_INVARG", "invalid argument to regex routine",
111 0, "", "*** unknown regexp error code ***",
112};
113
114/*
115 - regerror - the interface to error numbers
116 = extern size_t regerror(int, const regex_t *, char *, size_t);
117 */
118/* ARGSUSED */
119size_t
120regerror(errcode, preg, errbuf, errbuf_size)
121int errcode;
122const regex_t *preg;
123char *errbuf;
124size_t errbuf_size;
125{
126 register struct rerr *r;
127 register size_t len;
128 register int target = errcode &~ REG_ITOA;
129 register char *s;
130 char convbuf[50];
131
132 if (errcode == REG_ATOI)
133 s = regatoi(preg, convbuf);
134 else {
135 for (r = rerrs; r->code != 0; r++)
136 if (r->code == target)
137 break;
138
139 if (errcode&REG_ITOA) {
140 if (r->code != 0)
141 (void) strcpy(convbuf, r->name);
142 else
143 sprintf(convbuf, "REG_0x%x", target);
144 assert(strlen(convbuf) < sizeof(convbuf));
145 s = convbuf;
146 } else
147 s = r->explain;
148 }
149
150 len = strlen(s) + 1;
151 if (errbuf_size > 0) {
152 if (errbuf_size > len)
153 (void) strcpy(errbuf, s);
154 else {
155 (void) strncpy(errbuf, s, errbuf_size-1);
156 errbuf[errbuf_size-1] = '\0';
157 }
158 }
159
160 return(len);
161}
162
163/*
164 - regatoi - internal routine to implement REG_ATOI
165 == static char *regatoi(const regex_t *preg, char *localbuf);
166 */
167static char *
168regatoi(preg, localbuf)
169const regex_t *preg;
170char *localbuf;
171{
172 register struct rerr *r;
173 register size_t siz;
174 register char *p;
175
176 for (r = rerrs; r->code != 0; r++)
177 if (strcmp(r->name, preg->re_endp) == 0)
178 break;
179 if (r->code == 0)
180 return("0");
181
182 sprintf(localbuf, "%d", r->code);
183 return(localbuf);
184}
185
186/*
187 * $PchId: regerror.c,v 1.2 1996/03/12 19:10:15 philip Exp $
188 */
Note: See TracBrowser for help on using the repository browser.