summaryrefslogtreecommitdiff
path: root/reggnu.c
blob: 9c6a2161c2c1a862c75fece279e0305529dae1c8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
/**********************************************************************

  reggnu.c -  Oniguruma (regular expression library)

  Copyright (C) 2002-2004  K.Kosako (kosako@sofnec.co.jp)

**********************************************************************/
#include "regint.h"

#ifndef ONIGGNU_H     /* name changes from oniggnu.h to regex.h in ruby. */
#include "oniggnu.h"
#endif

#if defined(RUBY_PLATFORM) || defined(RUBY)
#ifndef ONIG_RUBY_M17N
#define USE_COMPATIBILITY_FOR_RUBY_EXTENSION_LIBRARY
#endif
#endif

#ifndef NULL
#define NULL   ((void* )0)
#endif

extern void
re_free_registers(OnigRegion* r)
{
  /* 0: don't free self */
  onig_region_free(r, 0);
}

extern int
re_adjust_startpos(regex_t* reg, const char* string, int size,
		   int startpos, int range)
{
  if (startpos > 0 && ONIGENC_MBC_MAXLEN(reg->enc) != 1 && startpos < size) {
    UChar *p;
    UChar *s = (UChar* )string + startpos;

    if (range > 0) {
      p = onigenc_get_right_adjust_char_head(reg->enc, (UChar* )string, s);
    }
    else {
      p = ONIGENC_LEFT_ADJUST_CHAR_HEAD(reg->enc, (UChar* )string, s);
    }
    return p - (UChar* )string;
  }

  return startpos;
}

extern int
re_match(regex_t* reg, const char* str, int size, int pos,
	 struct re_registers* regs)
{
  return onig_match(reg, (UChar* )str, (UChar* )(str + size),
		    (UChar* )(str + pos), regs, ONIG_OPTION_NONE);
}

extern int
re_search(regex_t* bufp, const char* string, int size, int startpos, int range,
	  struct re_registers* regs)
{
  return onig_search(bufp, (UChar* )string, (UChar* )(string + size),
		     (UChar* )(string + startpos),
		     (UChar* )(string + startpos + range),
		     regs, ONIG_OPTION_NONE);
}

extern int
re_compile_pattern(const char* pattern, int size, regex_t* reg, char* ebuf)
{
  int r;
  OnigErrorInfo einfo;

  r = onig_compile(reg, (UChar* )pattern, (UChar* )(pattern + size), &einfo);
  if (r != 0) {
    if (IS_NOT_NULL(ebuf))
      (void )onig_error_code_to_str((UChar* )ebuf, r, &einfo);
  }

  return r;
}

extern int
re_recompile_pattern(const char* pattern, int size, regex_t* reg, char* ebuf)
{
  int r;
  OnigErrorInfo einfo;
  OnigEncoding enc;

  /* I think encoding and options should be arguments of this function.
     But this is adapted to present re.c. (2002/11/29)
   */
  enc = OnigEncDefaultCharEncoding;

  r = onig_recompile(reg, (UChar* )pattern, (UChar* )(pattern + size),
		     reg->options, enc, OnigDefaultSyntax, &einfo);
  if (r != 0) {
    if (IS_NOT_NULL(ebuf))
      (void )onig_error_code_to_str((UChar* )ebuf, r, &einfo);
  }
  return r;
}

extern void
re_free_pattern(regex_t* reg)
{
  onig_free(reg);
}

extern int
re_alloc_pattern(regex_t** reg)
{
  return onig_alloc_init(reg, ONIG_OPTION_DEFAULT, OnigEncDefaultCharEncoding,
			 OnigDefaultSyntax);
}

extern void
re_set_casetable(const char* table)
{
  onigenc_set_default_caseconv_table((UChar* )table);
}

#ifdef USE_COMPATIBILITY_FOR_RUBY_EXTENSION_LIBRARY
static const unsigned char mbctab_ascii[] = {
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};

static const unsigned char mbctab_euc[] = {
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0,
};

static const unsigned char mbctab_sjis[] = {
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0
};

static const unsigned char mbctab_utf8[] = {
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 0, 0,
};

const unsigned char *re_mbctab = mbctab_ascii;
#endif

extern void
#ifdef ONIG_RUBY_M17N
re_mbcinit(OnigEncoding enc)
#else
re_mbcinit(int mb_code)
#endif
{
#ifdef ONIG_RUBY_M17N

  onigenc_set_default_encoding(enc);

#else

  OnigEncoding enc;

  switch (mb_code) {
  case MBCTYPE_ASCII:
    enc = ONIG_ENCODING_ASCII;
    break;
  case MBCTYPE_EUC:
    enc = ONIG_ENCODING_EUC_JP;
    break;
  case MBCTYPE_SJIS:
    enc = ONIG_ENCODING_SJIS;
    break;
  case MBCTYPE_UTF8:
    enc = ONIG_ENCODING_UTF8;
    break;
  default:
    return ;
    break;
  }

  onigenc_set_default_encoding(enc);
#endif

#ifdef USE_COMPATIBILITY_FOR_RUBY_EXTENSION_LIBRARY
  switch (mb_code) {
  case MBCTYPE_ASCII:
    re_mbctab = mbctab_ascii;
    break;
  case MBCTYPE_EUC:
    re_mbctab = mbctab_euc;
    break;
  case MBCTYPE_SJIS:
    re_mbctab = mbctab_sjis;
    break;
  case MBCTYPE_UTF8:
    re_mbctab = mbctab_utf8;
    break;
  }
#endif
}