1 /**********************************************************************
2 reggnu.c - Oniguruma (regular expression library)
3 **********************************************************************/
4 /*-
5 * Copyright (c) 2002-2006 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 "regint.h"
31
32 #ifndef ONIGGNU_H
33 #include "oniggnu.h"
34 #endif
35
36 extern void
re_free_registers(OnigRegion * r)37 re_free_registers(OnigRegion* r)
38 {
39 /* 0: don't free self */
40 onig_region_free(r, 0);
41 }
42
43 extern int
re_adjust_startpos(regex_t * reg,const char * string,int size,int startpos,int range)44 re_adjust_startpos(regex_t* reg, const char* string, int size,
45 int startpos, int range)
46 {
47 if (startpos > 0 && ONIGENC_MBC_MAXLEN(reg->enc) != 1 && startpos < size) {
48 UChar *p;
49 UChar *s = (UChar* )string + startpos;
50
51 if (range > 0) {
52 p = onigenc_get_right_adjust_char_head(reg->enc, (UChar* )string, s);
53 }
54 else {
55 p = ONIGENC_LEFT_ADJUST_CHAR_HEAD(reg->enc, (UChar* )string, s);
56 }
57 return p - (UChar* )string;
58 }
59
60 return startpos;
61 }
62
63 extern int
re_match(regex_t * reg,const char * str,int size,int pos,struct re_registers * regs)64 re_match(regex_t* reg, const char* str, int size, int pos,
65 struct re_registers* regs)
66 {
67 return onig_match(reg, (UChar* )str, (UChar* )(str + size),
68 (UChar* )(str + pos), regs, ONIG_OPTION_NONE);
69 }
70
71 extern int
re_search(regex_t * bufp,const char * string,int size,int startpos,int range,struct re_registers * regs)72 re_search(regex_t* bufp, const char* string, int size, int startpos, int range,
73 struct re_registers* regs)
74 {
75 return onig_search(bufp, (UChar* )string, (UChar* )(string + size),
76 (UChar* )(string + startpos),
77 (UChar* )(string + startpos + range),
78 regs, ONIG_OPTION_NONE);
79 }
80
81 extern int
re_compile_pattern(const char * pattern,int size,regex_t * reg,char * ebuf)82 re_compile_pattern(const char* pattern, int size, regex_t* reg, char* ebuf)
83 {
84 int r;
85 OnigErrorInfo einfo;
86
87 r = onig_compile(reg, (UChar* )pattern, (UChar* )(pattern + size), &einfo);
88 if (r != 0) {
89 if (IS_NOT_NULL(ebuf))
90 (void )onig_error_code_to_str((UChar* )ebuf, r, &einfo);
91 }
92
93 return r;
94 }
95
96 #ifdef USE_RECOMPILE_API
97 extern int
re_recompile_pattern(const char * pattern,int size,regex_t * reg,char * ebuf)98 re_recompile_pattern(const char* pattern, int size, regex_t* reg, char* ebuf)
99 {
100 int r;
101 OnigErrorInfo einfo;
102 OnigEncoding enc;
103
104 /* I think encoding and options should be arguments of this function.
105 But this is adapted to present re.c. (2002/11/29)
106 */
107 enc = OnigEncDefaultCharEncoding;
108
109 r = onig_recompile(reg, (UChar* )pattern, (UChar* )(pattern + size),
110 reg->options, enc, OnigDefaultSyntax, &einfo);
111 if (r != 0) {
112 if (IS_NOT_NULL(ebuf))
113 (void )onig_error_code_to_str((UChar* )ebuf, r, &einfo);
114 }
115 return r;
116 }
117 #endif
118
119 extern void
re_free_pattern(regex_t * reg)120 re_free_pattern(regex_t* reg)
121 {
122 onig_free(reg);
123 }
124
125 extern int
re_alloc_pattern(regex_t ** reg)126 re_alloc_pattern(regex_t** reg)
127 {
128 return onig_alloc_init(reg, ONIG_OPTION_DEFAULT,
129 ONIGENC_AMBIGUOUS_MATCH_DEFAULT,
130 OnigEncDefaultCharEncoding,
131 OnigDefaultSyntax);
132 }
133
134 extern void
re_set_casetable(const char * table)135 re_set_casetable(const char* table)
136 {
137 onigenc_set_default_caseconv_table((UChar* )table);
138 }
139
140 extern void
141 #ifdef ONIG_RUBY_M17N
re_mbcinit(OnigEncoding enc)142 re_mbcinit(OnigEncoding enc)
143 #else
144 re_mbcinit(int mb_code)
145 #endif
146 {
147 #ifdef ONIG_RUBY_M17N
148
149 onigenc_set_default_encoding(enc);
150
151 #else
152
153 OnigEncoding enc;
154
155 switch (mb_code) {
156 case RE_MBCTYPE_ASCII:
157 enc = ONIG_ENCODING_ASCII;
158 break;
159 case RE_MBCTYPE_EUC:
160 enc = ONIG_ENCODING_EUC_JP;
161 break;
162 case RE_MBCTYPE_SJIS:
163 enc = ONIG_ENCODING_SJIS;
164 break;
165 case RE_MBCTYPE_UTF8:
166 enc = ONIG_ENCODING_UTF8;
167 break;
168 default:
169 return ;
170 break;
171 }
172
173 onigenc_set_default_encoding(enc);
174 #endif
175 }
176
