1 /**********************************************************************
2 regposerr.c - Oniguruma (regular expression library)
3 **********************************************************************/
4 /*-
5 * Copyright (c) 2002-2007 K.Kosako <sndgk393 AT ybb DOT ne DOT jp>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #include "config.h"
31 #include "onigposix.h"
32
33 #ifdef HAVE_STRING_H
34 # include <string.h>
35 #else
36 # include <strings.h>
37 #endif
38
39 #if defined(__GNUC__)
40 # define ARG_UNUSED __attribute__ ((unused))
41 #else
42 # define ARG_UNUSED
43 #endif
44
45 static char* ESTRING[] = {
46 NULL,
47 "failed to match", /* REG_NOMATCH */
48 "Invalid regular expression", /* REG_BADPAT */
49 "invalid collating element referenced", /* REG_ECOLLATE */
50 "invalid character class type referenced", /* REG_ECTYPE */
51 "bad backslash-escape sequence", /* REG_EESCAPE */
52 "invalid back reference number", /* REG_ESUBREG */
53 "imbalanced [ and ]", /* REG_EBRACK */
54 "imbalanced ( and )", /* REG_EPAREN */
55 "imbalanced { and }", /* REG_EBRACE */
56 "invalid repeat range {n,m}", /* REG_BADBR */
57 "invalid range", /* REG_ERANGE */
58 "Out of memory", /* REG_ESPACE */
59 "? * + not preceded by valid regular expression", /* REG_BADRPT */
60
61 /* Extended errors */
62 "internal error", /* REG_EONIG_INTERNAL */
63 "invalid wide char value", /* REG_EONIG_BADWC */
64 "invalid argument", /* REG_EONIG_BADARG */
65 "multi-thread error" /* REG_EONIG_THREAD */
66 };
67
68 #include <stdio.h>
69
70
71 extern size_t
72 regerror(int posix_ecode, const regex_t* reg ARG_UNUSED, char* buf,
73 size_t size)
74 {
75 char* s;
76 char tbuf[35];
77 size_t len;
78
79 if (posix_ecode > 0
80 && posix_ecode < (int )(sizeof(ESTRING) / sizeof(ESTRING[0]))) {
81 s = ESTRING[posix_ecode];
82 }
83 else if (posix_ecode == 0) {
84 s = "";
85 }
86 else {
87 sprintf(tbuf, "undefined error code (%d)", posix_ecode);
88 s = tbuf;
89 }
90
91 len = strlen(s) + 1; /* use strlen() because s is ascii encoding. */
92
93 if (buf != NULL && size > 0) {
94 strncpy(buf, s, size - 1);
95 buf[size - 1] = '\0';
96 }
97 return len;
98 }