1 /**********************************************************************
2 reggnu.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 #include "regint.h"
31 #include "oniggnu.h"
32
33 extern void
re_free_registers(OnigRegion * r)34 re_free_registers(OnigRegion* r)
35 {
36 /* 0: don't free self */
37 onig_region_free(r, 0);
38 }
39
40 extern int
re_adjust_startpos(regex_t * reg,const char * string,int size,int startpos,int range)41 re_adjust_startpos(regex_t* reg, const char* string, int size,
42 int startpos, int range)
43 {
44 if (startpos > 0 && ONIGENC_MBC_MAXLEN(reg->enc) != 1 && startpos < size) {
45 UChar *p;
46 UChar *s = (UChar* )string + startpos;
47
48 if (range > 0) {
49 p = onigenc_get_right_adjust_char_head(reg->enc, (UChar* )string, s);
50 }
51 else {
52 p = ONIGENC_LEFT_ADJUST_CHAR_HEAD(reg->enc, (UChar* )string, s);
53 }
54 return (int )(p - (UChar* )string);
55 }
56
57 return startpos;
58 }
59
60 extern int
re_match(regex_t * reg,const char * str,int size,int pos,struct re_registers * regs)61 re_match(regex_t* reg, const char* str, int size, int pos,
62 struct re_registers* regs)
63 {
64 return onig_match(reg, (UChar* )str, (UChar* )(str + size),
65 (UChar* )(str + pos), regs, ONIG_OPTION_NONE);
66 }
67
68 extern int
re_search(regex_t * bufp,const char * string,int size,int startpos,int range,struct re_registers * regs)69 re_search(regex_t* bufp, const char* string, int size, int startpos, int range,
70 struct re_registers* regs)
71 {
72 return onig_search(bufp, (UChar* )string, (UChar* )(string + size),
73 (UChar* )(string + startpos),
74 (UChar* )(string + startpos + range),
75 regs, ONIG_OPTION_NONE);
76 }
77
78 extern int
re_compile_pattern(const char * pattern,int size,regex_t * reg,char * ebuf)79 re_compile_pattern(const char* pattern, int size, regex_t* reg, char* ebuf)
80 {
81 int r;
82 OnigErrorInfo einfo;
83
84 r = onig_compile(reg, (UChar* )pattern, (UChar* )(pattern + size), &einfo);
85 if (r != ONIG_NORMAL) {
86 if (IS_NOT_NULL(ebuf))
87 (void )onig_error_code_to_str((UChar* )ebuf, r, &einfo);
88 }
89
90 return r;
91 }
92
93 extern void
re_free_pattern(regex_t * reg)94 re_free_pattern(regex_t* reg)
95 {
96 onig_free(reg);
97 }
98
99 extern int
re_alloc_pattern(regex_t ** reg)100 re_alloc_pattern(regex_t** reg)
101 {
102 *reg = (regex_t* )xmalloc(sizeof(regex_t));
103 if (IS_NULL(*reg)) return ONIGERR_MEMORY;
104
105 return onig_reg_init(*reg, ONIG_OPTION_DEFAULT,
106 ONIGENC_CASE_FOLD_DEFAULT,
107 OnigEncDefaultCharEncoding,
108 OnigDefaultSyntax);
109 }
110
111 extern void
re_set_casetable(const char * table)112 re_set_casetable(const char* table)
113 {
114 onigenc_set_default_caseconv_table((UChar* )table);
115 }
116
117 extern void
re_mbcinit(int mb_code)118 re_mbcinit(int mb_code)
119 {
120 OnigEncoding enc;
121
122 switch (mb_code) {
123 case RE_MBCTYPE_ASCII:
124 enc = ONIG_ENCODING_ASCII;
125 break;
126 case RE_MBCTYPE_EUC:
127 enc = ONIG_ENCODING_EUC_JP;
128 break;
129 case RE_MBCTYPE_SJIS:
130 enc = ONIG_ENCODING_SJIS;
131 break;
132 case RE_MBCTYPE_UTF8:
133 enc = ONIG_ENCODING_UTF8;
134 break;
135 default:
136 return ;
137 break;
138 }
139
140 onig_initialize(&enc, 1);
141
142 onigenc_set_default_encoding(enc);
143 }
144
