1 /**********************************************************************
2 regposerr.c - Oniguruma (regular expression library)
3 **********************************************************************/
4 /*-
5 * Copyright (c) 2002-2020 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 #ifndef ONIG_NO_STANDARD_C_HEADERS
41 #include <string.h>
42 #include <stdio.h>
43 #endif
44
45 #if defined(__GNUC__)
46 # define ARG_UNUSED __attribute__ ((unused))
47 #else
48 # define ARG_UNUSED
49 #endif
50
51 #if defined(_WIN32) && !defined(__GNUC__)
52
53 #ifndef xsnprintf
54 #define xsnprintf sprintf_s
55 #endif
56 #ifndef xstrncpy
57 #define xstrncpy(dest,src,size) strncpy_s(dest,size,src,_TRUNCATE)
58 #endif
59
60 #else
61
62 #ifndef xsnprintf
63 #define xsnprintf snprintf
64 #endif
65 #ifndef xstrncpy
66 #define xstrncpy strncpy
67 #endif
68
69 #endif
70
71
72 static char* ESTRING[] = {
73 NULL,
74 "failed to match", /* REG_NOMATCH */
75 "Invalid regular expression", /* REG_BADPAT */
76 "invalid collating element referenced", /* REG_ECOLLATE */
77 "invalid character class type referenced", /* REG_ECTYPE */
78 "bad backslash-escape sequence", /* REG_EESCAPE */
79 "invalid back reference number", /* REG_ESUBREG */
80 "imbalanced [ and ]", /* REG_EBRACK */
81 "imbalanced ( and )", /* REG_EPAREN */
82 "imbalanced { and }", /* REG_EBRACE */
83 "invalid repeat range {n,m}", /* REG_BADBR */
84 "invalid range", /* REG_ERANGE */
85 "Out of memory", /* REG_ESPACE */
86 "? * + not preceded by valid regular expression", /* REG_BADRPT */
87
88 /* Extended errors */
89 "internal error", /* REG_EONIG_INTERNAL */
90 "invalid wide char value", /* REG_EONIG_BADWC */
91 "invalid argument" /* REG_EONIG_BADARG */
92 };
93
94
95
96 extern size_t
regerror(int posix_ecode,const regex_t * reg ARG_UNUSED,char * buf,size_t size)97 regerror(int posix_ecode, const regex_t* reg ARG_UNUSED, char* buf,
98 size_t size)
99 {
100 char* s;
101 char tbuf[35];
102 size_t len;
103
104 if (posix_ecode > 0
105 && posix_ecode < (int )(sizeof(ESTRING) / sizeof(ESTRING[0]))) {
106 s = ESTRING[posix_ecode];
107 }
108 else if (posix_ecode == 0) {
109 s = "";
110 }
111 else {
112 xsnprintf(tbuf, sizeof(tbuf), "undefined error code (%d)", posix_ecode);
113 s = tbuf;
114 }
115
116 len = strlen(s) + 1; /* use strlen() because s is ascii encoding. */
117
118 if (buf != NULL && size > 0) {
119 xstrncpy(buf, s, size - 1);
120 buf[size - 1] = '\0';
121 }
122 return len;
123 }
124