1 /**********************************************************************
2 regposerr.c - Oniguruma (regular expression library)
3 **********************************************************************/
4 /*-
5 * Copyright (c) 2002-2019 K.Kosako
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 /* Can't include regint.h etc.. for conflict of regex_t.
31 Define ONIGURUMA_EXPORT here for onigposix.h.
32 */
33 #ifndef ONIGURUMA_EXPORT
34 #define ONIGURUMA_EXPORT
35 #endif
36
37 #include "config.h"
38 #include "onigposix.h"
39
40 #include <string.h>
41
42 #if defined(__GNUC__)
43 # define ARG_UNUSED __attribute__ ((unused))
44 #else
45 # define ARG_UNUSED
46 #endif
47
48 #if defined(_WIN32) && !defined(__GNUC__)
49 #define xsnprintf sprintf_s
50 #define xstrncpy(dest,src,size) strncpy_s(dest,size,src,_TRUNCATE)
51 #else
52 #define xsnprintf snprintf
53 #define xstrncpy strncpy
54 #endif
55
56 static char* ESTRING[] = {
57 NULL,
58 "failed to match", /* REG_NOMATCH */
59 "Invalid regular expression", /* REG_BADPAT */
60 "invalid collating element referenced", /* REG_ECOLLATE */
61 "invalid character class type referenced", /* REG_ECTYPE */
62 "bad backslash-escape sequence", /* REG_EESCAPE */
63 "invalid back reference number", /* REG_ESUBREG */
64 "imbalanced [ and ]", /* REG_EBRACK */
65 "imbalanced ( and )", /* REG_EPAREN */
66 "imbalanced { and }", /* REG_EBRACE */
67 "invalid repeat range {n,m}", /* REG_BADBR */
68 "invalid range", /* REG_ERANGE */
69 "Out of memory", /* REG_ESPACE */
70 "? * + not preceded by valid regular expression", /* REG_BADRPT */
71
72 /* Extended errors */
73 "internal error", /* REG_EONIG_INTERNAL */
74 "invalid wide char value", /* REG_EONIG_BADWC */
75 "invalid argument" /* REG_EONIG_BADARG */
76 };
77
78 #include <stdio.h>
79
80
81 extern size_t
regerror(int posix_ecode,const regex_t * reg ARG_UNUSED,char * buf,size_t size)82 regerror(int posix_ecode, const regex_t* reg ARG_UNUSED, char* buf,
83 size_t size)
84 {
85 char* s;
86 char tbuf[35];
87 size_t len;
88
89 if (posix_ecode > 0
90 && posix_ecode < (int )(sizeof(ESTRING) / sizeof(ESTRING[0]))) {
91 s = ESTRING[posix_ecode];
92 }
93 else if (posix_ecode == 0) {
94 s = "";
95 }
96 else {
97 xsnprintf(tbuf, sizeof(tbuf), "undefined error code (%d)", posix_ecode);
98 s = tbuf;
99 }
100
101 len = strlen(s) + 1; /* use strlen() because s is ascii encoding. */
102
103 if (buf != NULL && size > 0) {
104 xstrncpy(buf, s, size - 1);
105 buf[size - 1] = '\0';
106 }
107 return len;
108 }
109