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 #undef regex_t
41 #undef regmatch_t
42 #undef regoff_t
43 #undef regcomp
44 #undef regexec
45 #undef regfree
46 #undef regerror
47 #undef reg_set_encoding
48 #undef reg_name_to_group_numbers
49 #undef reg_foreach_name
50 #undef reg_number_of_names
51
52 #ifndef ONIG_NO_STANDARD_C_HEADERS
53 #include <string.h>
54 #include <stdio.h>
55 #endif
56
57 #if defined(__GNUC__)
58 # define ARG_UNUSED __attribute__ ((unused))
59 #else
60 # define ARG_UNUSED
61 #endif
62
63 #if defined(_WIN32) && !defined(__GNUC__)
64
65 #ifndef xsnprintf
66 #define xsnprintf sprintf_s
67 #endif
68 #ifndef xstrncpy
69 #define xstrncpy(dest,src,size) strncpy_s(dest,size,src,_TRUNCATE)
70 #endif
71
72 #else
73
74 #ifndef xsnprintf
75 #define xsnprintf snprintf
76 #endif
77 #ifndef xstrncpy
78 #define xstrncpy strncpy
79 #endif
80
81 #endif
82
83
84 static char* ESTRING[] = {
85 NULL,
86 "failed to match", /* REG_NOMATCH */
87 "Invalid regular expression", /* REG_BADPAT */
88 "invalid collating element referenced", /* REG_ECOLLATE */
89 "invalid character class type referenced", /* REG_ECTYPE */
90 "bad backslash-escape sequence", /* REG_EESCAPE */
91 "invalid back reference number", /* REG_ESUBREG */
92 "imbalanced [ and ]", /* REG_EBRACK */
93 "imbalanced ( and )", /* REG_EPAREN */
94 "imbalanced { and }", /* REG_EBRACE */
95 "invalid repeat range {n,m}", /* REG_BADBR */
96 "invalid range", /* REG_ERANGE */
97 "Out of memory", /* REG_ESPACE */
98 "? * + not preceded by valid regular expression", /* REG_BADRPT */
99
100 /* Extended errors */
101 "internal error", /* REG_EONIG_INTERNAL */
102 "invalid wide char value", /* REG_EONIG_BADWC */
103 "invalid argument" /* REG_EONIG_BADARG */
104 };
105
106
107 extern size_t
onig_posix_regerror(int posix_ecode,const onig_posix_regex_t * reg ARG_UNUSED,char * buf,size_t size)108 onig_posix_regerror(int posix_ecode, const onig_posix_regex_t* reg ARG_UNUSED,
109 char* buf, size_t size)
110 {
111 char* s;
112 char tbuf[35];
113 size_t len;
114
115 if (posix_ecode > 0
116 && posix_ecode < (int )(sizeof(ESTRING) / sizeof(ESTRING[0]))) {
117 s = ESTRING[posix_ecode];
118 }
119 else if (posix_ecode == 0) {
120 s = "";
121 }
122 else {
123 xsnprintf(tbuf, sizeof(tbuf), "undefined error code (%d)", posix_ecode);
124 s = tbuf;
125 }
126
127 len = strlen(s) + 1; /* use strlen() because s is ascii encoding. */
128
129 if (buf != NULL && size > 0) {
130 xstrncpy(buf, s, size - 1);
131 buf[size - 1] = '\0';
132 }
133 return len;
134 }
135
136 #ifdef USE_BINARY_COMPATIBLE_POSIX_API
137
138 extern size_t
regerror(int posix_ecode,const onig_posix_regex_t * reg ARG_UNUSED,char * buf,size_t size)139 regerror(int posix_ecode, const onig_posix_regex_t* reg ARG_UNUSED,
140 char* buf, size_t size)
141 {
142 return onig_posix_regerror(posix_ecode, reg, buf, size);
143 }
144
145 #endif
146