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 #if defined(_WIN32) && !defined(__GNUC__)
46 #define xsnprintf sprintf_s
47 #define xstrncpy(dest,src,size) strncpy_s(dest,size,src,_TRUNCATE)
48 #else
49 #define xsnprintf snprintf
50 #define xstrncpy strncpy
51 #endif
52
53 static char* ESTRING[] = {
54 NULL,
55 "failed to match", /* REG_NOMATCH */
56 "Invalid regular expression", /* REG_BADPAT */
57 "invalid collating element referenced", /* REG_ECOLLATE */
58 "invalid character class type referenced", /* REG_ECTYPE */
59 "bad backslash-escape sequence", /* REG_EESCAPE */
60 "invalid back reference number", /* REG_ESUBREG */
61 "imbalanced [ and ]", /* REG_EBRACK */
62 "imbalanced ( and )", /* REG_EPAREN */
63 "imbalanced { and }", /* REG_EBRACE */
64 "invalid repeat range {n,m}", /* REG_BADBR */
65 "invalid range", /* REG_ERANGE */
66 "Out of memory", /* REG_ESPACE */
67 "? * + not preceded by valid regular expression", /* REG_BADRPT */
68
69 /* Extended errors */
70 "internal error", /* REG_EONIG_INTERNAL */
71 "invalid wide char value", /* REG_EONIG_BADWC */
72 "invalid argument" /* REG_EONIG_BADARG */
73 };
74
75 #include <stdio.h>
76
77
78 extern size_t
regerror(int posix_ecode,const regex_t * reg ARG_UNUSED,char * buf,size_t size)79 regerror(int posix_ecode, const regex_t* reg ARG_UNUSED, char* buf,
80 size_t size)
81 {
82 char* s;
83 char tbuf[35];
84 size_t len;
85
86 if (posix_ecode > 0
87 && posix_ecode < (int )(sizeof(ESTRING) / sizeof(ESTRING[0]))) {
88 s = ESTRING[posix_ecode];
89 }
90 else if (posix_ecode == 0) {
91 s = "";
92 }
93 else {
94 xsnprintf(tbuf, sizeof(tbuf), "undefined error code (%d)", posix_ecode);
95 s = tbuf;
96 }
97
98 len = strlen(s) + 1; /* use strlen() because s is ascii encoding. */
99
100 if (buf != NULL && size > 0) {
101 xstrncpy(buf, s, size - 1);
102 buf[size - 1] = '\0';
103 }
104 return len;
105 }
106
