Ruby 3.5.0dev (2025-11-03 revision 4a3d8346a6d0e068508631541f6bc43e8b154ea1)
regenc.c (4a3d8346a6d0e068508631541f6bc43e8b154ea1)
1/**********************************************************************
2 regenc.c - Onigmo (Oniguruma-mod) (regular expression library)
3**********************************************************************/
4/*-
5 * Copyright (c) 2002-2007 K.Kosako <sndgk393 AT ybb DOT ne DOT jp>
6 * Copyright (c) 2011-2016 K.Takata <kentkt AT csc DOT jp>
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31#include "regint.h"
32
33OnigEncoding OnigEncDefaultCharEncoding = ONIG_ENCODING_INIT_DEFAULT;
34
35extern int
36onigenc_init(void)
37{
38 return 0;
39}
40
41extern OnigEncoding
42onigenc_get_default_encoding(void)
43{
44 return OnigEncDefaultCharEncoding;
45}
46
47extern int
48onigenc_set_default_encoding(OnigEncoding enc)
49{
50 OnigEncDefaultCharEncoding = enc;
51 return 0;
52}
53
54extern int
55onigenc_mbclen(const OnigUChar* p,const OnigUChar* e, OnigEncoding enc)
56{
57 int ret = ONIGENC_PRECISE_MBC_ENC_LEN(enc, p, e);
58 if (ONIGENC_MBCLEN_CHARFOUND_P(ret)) {
59 ret = ONIGENC_MBCLEN_CHARFOUND_LEN(ret);
60 if (p + ret > e) ret = (int)(e - p); // just for case
61 return ret;
62 }
63 else if (ONIGENC_MBCLEN_NEEDMORE_P(ret)) {
64 return (int)(e - p);
65 }
66 return p < e ? 1 : 0;
67}
68
69extern int
70onigenc_mbclen_approximate(const OnigUChar* p,const OnigUChar* e, OnigEncoding enc)
71{
72 int ret = ONIGENC_PRECISE_MBC_ENC_LEN(enc, p, e);
73 if (ONIGENC_MBCLEN_CHARFOUND_P(ret))
74 return ONIGENC_MBCLEN_CHARFOUND_LEN(ret);
75 else if (ONIGENC_MBCLEN_NEEDMORE_P(ret))
76 return (int )(e - p) + ONIGENC_MBCLEN_NEEDMORE_LEN(ret);
77 return 1;
78}
79
80extern UChar*
81onigenc_get_right_adjust_char_head(OnigEncoding enc, const UChar* start, const UChar* s, const UChar* end)
82{
83 UChar* p = ONIGENC_LEFT_ADJUST_CHAR_HEAD(enc, start, s, end);
84 if (p < s) {
85 p += enclen(enc, p, end);
86 }
87 return p;
88}
89
90extern UChar*
91onigenc_get_right_adjust_char_head_with_prev(OnigEncoding enc,
92 const UChar* start, const UChar* s, const UChar* end, const UChar** prev)
93{
94 UChar* p = ONIGENC_LEFT_ADJUST_CHAR_HEAD(enc, start, s, end);
95
96 if (p < s) {
97 if (prev) *prev = (const UChar* )p;
98 p += enclen(enc, p, end);
99 }
100 else {
101 if (prev) *prev = (const UChar* )NULL; /* Sorry */
102 }
103 return p;
104}
105
106extern UChar*
107onigenc_get_prev_char_head(OnigEncoding enc, const UChar* start, const UChar* s, const UChar* end)
108{
109 if (s <= start)
110 return (UChar* )NULL;
111
112 return ONIGENC_LEFT_ADJUST_CHAR_HEAD(enc, start, s - 1, end);
113}
114
115extern UChar*
116onigenc_step_back(OnigEncoding enc, const UChar* start, const UChar* s, const UChar* end, int n)
117{
118 while (ONIG_IS_NOT_NULL(s) && n-- > 0) {
119 if (s <= start)
120 return (UChar* )NULL;
121
122 s = ONIGENC_LEFT_ADJUST_CHAR_HEAD(enc, start, s - 1, end);
123 }
124 return (UChar* )s;
125}
126
127extern UChar*
128onigenc_step(OnigEncoding enc, const UChar* p, const UChar* end, int n)
129{
130 UChar* q = (UChar* )p;
131 while (n-- > 0) {
132 q += ONIGENC_MBC_ENC_LEN(enc, q, end);
133 }
134 return (q <= end ? q : NULL);
135}
136
137extern int
138onigenc_strlen(OnigEncoding enc, const UChar* p, const UChar* end)
139{
140 int n = 0;
141 UChar* q = (UChar* )p;
142
143 while (q < end) {
144 q += ONIGENC_MBC_ENC_LEN(enc, q, end);
145 n++;
146 }
147 return n;
148}
149
150extern int
151onigenc_strlen_null(OnigEncoding enc, const UChar* s)
152{
153 int n = 0;
154 UChar* p = (UChar* )s;
155 UChar* e;
156
157 while (1) {
158 if (*p == '\0') {
159 UChar* q;
160 int len = ONIGENC_MBC_MINLEN(enc);
161
162 if (len == 1) return n;
163 q = p + 1;
164 while (len > 1) {
165 if (*q != '\0') break;
166 q++;
167 len--;
168 }
169 if (len == 1) return n;
170 }
171 e = p + ONIGENC_MBC_MAXLEN(enc);
172 p += ONIGENC_MBC_ENC_LEN(enc, p, e);
173 n++;
174 }
175}
176
177extern int
178onigenc_str_bytelen_null(OnigEncoding enc, const UChar* s)
179{
180 UChar* start = (UChar* )s;
181 UChar* p = (UChar* )s;
182 UChar* e;
183
184 while (1) {
185 if (*p == '\0') {
186 UChar* q;
187 int len = ONIGENC_MBC_MINLEN(enc);
188
189 if (len == 1) return (int )(p - start);
190 q = p + 1;
191 while (len > 1) {
192 if (*q != '\0') break;
193 q++;
194 len--;
195 }
196 if (len == 1) return (int )(p - start);
197 }
198 e = p + ONIGENC_MBC_MAXLEN(enc);
199 p += ONIGENC_MBC_ENC_LEN(enc, p, e);
200 }
201}
202
203const UChar OnigEncAsciiToLowerCaseTable[] = {
204 '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
205 '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
206 '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
207 '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
208 '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
209 '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
210 '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
211 '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
212 '\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
213 '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
214 '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
215 '\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137',
216 '\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
217 '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
218 '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
219 '\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177',
220 '\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207',
221 '\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217',
222 '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
223 '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
224 '\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247',
225 '\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257',
226 '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
227 '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
228 '\300', '\301', '\302', '\303', '\304', '\305', '\306', '\307',
229 '\310', '\311', '\312', '\313', '\314', '\315', '\316', '\317',
230 '\320', '\321', '\322', '\323', '\324', '\325', '\326', '\327',
231 '\330', '\331', '\332', '\333', '\334', '\335', '\336', '\337',
232 '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
233 '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
234 '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
235 '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377',
236};
237
238#ifdef USE_UPPER_CASE_TABLE
239const UChar OnigEncAsciiToUpperCaseTable[256] = {
240 '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
241 '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
242 '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
243 '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
244 '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
245 '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
246 '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
247 '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
248 '\100', '\101', '\102', '\103', '\104', '\105', '\106', '\107',
249 '\110', '\111', '\112', '\113', '\114', '\115', '\116', '\117',
250 '\120', '\121', '\122', '\123', '\124', '\125', '\126', '\127',
251 '\130', '\131', '\132', '\133', '\134', '\135', '\136', '\137',
252 '\140', '\101', '\102', '\103', '\104', '\105', '\106', '\107',
253 '\110', '\111', '\112', '\113', '\114', '\115', '\116', '\117',
254 '\120', '\121', '\122', '\123', '\124', '\125', '\126', '\127',
255 '\130', '\131', '\132', '\173', '\174', '\175', '\176', '\177',
256 '\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207',
257 '\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217',
258 '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
259 '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
260 '\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247',
261 '\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257',
262 '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
263 '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
264 '\300', '\301', '\302', '\303', '\304', '\305', '\306', '\307',
265 '\310', '\311', '\312', '\313', '\314', '\315', '\316', '\317',
266 '\320', '\321', '\322', '\323', '\324', '\325', '\326', '\327',
267 '\330', '\331', '\332', '\333', '\334', '\335', '\336', '\337',
268 '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
269 '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
270 '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
271 '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377',
272};
273#endif
274
275const unsigned short OnigEncAsciiCtypeTable[256] = {
276 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
277 0x4008, 0x420c, 0x4209, 0x4208, 0x4208, 0x4208, 0x4008, 0x4008,
278 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
279 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008, 0x4008,
280 0x4284, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
281 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
282 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0, 0x78b0,
283 0x78b0, 0x78b0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x41a0,
284 0x41a0, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x7ca2, 0x74a2,
285 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2,
286 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2, 0x74a2,
287 0x74a2, 0x74a2, 0x74a2, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x51a0,
288 0x41a0, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x78e2, 0x70e2,
289 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2,
290 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2, 0x70e2,
291 0x70e2, 0x70e2, 0x70e2, 0x41a0, 0x41a0, 0x41a0, 0x41a0, 0x4008,
292 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
293 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
294 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
295 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
296 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
297 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
298 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
299 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
300 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
301 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
302 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
303 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
304 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
305 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
306 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
307 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000
308};
309
310const UChar OnigEncISO_8859_1_ToLowerCaseTable[256] = {
311 '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
312 '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
313 '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
314 '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
315 '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
316 '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
317 '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
318 '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
319 '\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
320 '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
321 '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
322 '\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137',
323 '\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
324 '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
325 '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
326 '\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177',
327 '\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207',
328 '\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217',
329 '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
330 '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
331 '\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247',
332 '\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257',
333 '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
334 '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
335 '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
336 '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
337 '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\327',
338 '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\337',
339 '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
340 '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
341 '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
342 '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377'
343};
344
345#ifdef USE_UPPER_CASE_TABLE
346const UChar OnigEncISO_8859_1_ToUpperCaseTable[256] = {
347 '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
348 '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
349 '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
350 '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
351 '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
352 '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
353 '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
354 '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
355 '\100', '\101', '\102', '\103', '\104', '\105', '\106', '\107',
356 '\110', '\111', '\112', '\113', '\114', '\115', '\116', '\117',
357 '\120', '\121', '\122', '\123', '\124', '\125', '\126', '\127',
358 '\130', '\131', '\132', '\133', '\134', '\135', '\136', '\137',
359 '\140', '\101', '\102', '\103', '\104', '\105', '\106', '\107',
360 '\110', '\111', '\112', '\113', '\114', '\115', '\116', '\117',
361 '\120', '\121', '\122', '\123', '\124', '\125', '\126', '\127',
362 '\130', '\131', '\132', '\173', '\174', '\175', '\176', '\177',
363 '\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207',
364 '\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217',
365 '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
366 '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
367 '\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247',
368 '\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257',
369 '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
370 '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
371 '\300', '\301', '\302', '\303', '\304', '\305', '\306', '\307',
372 '\310', '\311', '\312', '\313', '\314', '\315', '\316', '\317',
373 '\320', '\321', '\322', '\323', '\324', '\325', '\326', '\327',
374 '\330', '\331', '\332', '\333', '\334', '\335', '\336', '\337',
375 '\300', '\301', '\302', '\303', '\304', '\305', '\306', '\307',
376 '\310', '\311', '\312', '\313', '\314', '\315', '\316', '\317',
377 '\320', '\321', '\322', '\323', '\324', '\325', '\326', '\367',
378 '\330', '\331', '\332', '\333', '\334', '\335', '\336', '\377',
379};
380#endif
381
382#if 0
383extern void
384onigenc_set_default_caseconv_table(const UChar* table ARG_UNUSED)
385{
386 /* nothing */
387 /* obsoleted. */
388}
389#endif
390
391extern UChar*
392onigenc_get_left_adjust_char_head(OnigEncoding enc, const UChar* start, const UChar* s, const UChar* end)
393{
394 return ONIGENC_LEFT_ADJUST_CHAR_HEAD(enc, start, s, end);
395}
396
397const OnigPairCaseFoldCodes OnigAsciiLowerMap[] = {
398 { 0x41, 0x61 },
399 { 0x42, 0x62 },
400 { 0x43, 0x63 },
401 { 0x44, 0x64 },
402 { 0x45, 0x65 },
403 { 0x46, 0x66 },
404 { 0x47, 0x67 },
405 { 0x48, 0x68 },
406 { 0x49, 0x69 },
407 { 0x4a, 0x6a },
408 { 0x4b, 0x6b },
409 { 0x4c, 0x6c },
410 { 0x4d, 0x6d },
411 { 0x4e, 0x6e },
412 { 0x4f, 0x6f },
413 { 0x50, 0x70 },
414 { 0x51, 0x71 },
415 { 0x52, 0x72 },
416 { 0x53, 0x73 },
417 { 0x54, 0x74 },
418 { 0x55, 0x75 },
419 { 0x56, 0x76 },
420 { 0x57, 0x77 },
421 { 0x58, 0x78 },
422 { 0x59, 0x79 },
423 { 0x5a, 0x7a }
424};
425
426extern int
427onigenc_ascii_apply_all_case_fold(OnigCaseFoldType flag ARG_UNUSED,
428 OnigApplyAllCaseFoldFunc f, void* arg,
429 OnigEncoding enc ARG_UNUSED)
430{
431 OnigCodePoint code;
432 int i, r;
433
434 for (i = 0; i < numberof(OnigAsciiLowerMap); i++) {
435 code = OnigAsciiLowerMap[i].to;
436 r = (*f)(OnigAsciiLowerMap[i].from, &code, 1, arg);
437 if (r != 0) return r;
438
439 code = OnigAsciiLowerMap[i].from;
440 r = (*f)(OnigAsciiLowerMap[i].to, &code, 1, arg);
441 if (r != 0) return r;
442 }
443
444 return 0;
445}
446
447extern int
448onigenc_ascii_get_case_fold_codes_by_str(OnigCaseFoldType flag ARG_UNUSED,
449 const OnigUChar* p, const OnigUChar* end ARG_UNUSED,
450 OnigCaseFoldCodeItem items[], OnigEncoding enc ARG_UNUSED)
451{
452 if (0x41 <= *p && *p <= 0x5a) {
453 items[0].byte_len = 1;
454 items[0].code_len = 1;
455 items[0].code[0] = (OnigCodePoint )(*p + 0x20);
456 return 1;
457 }
458 else if (0x61 <= *p && *p <= 0x7a) {
459 items[0].byte_len = 1;
460 items[0].code_len = 1;
461 items[0].code[0] = (OnigCodePoint )(*p - 0x20);
462 return 1;
463 }
464 else
465 return 0;
466}
467
468static int
469ss_apply_all_case_fold(OnigCaseFoldType flag ARG_UNUSED,
470 OnigApplyAllCaseFoldFunc f, void* arg)
471{
472 OnigCodePoint ss[] = { 0x73, 0x73 };
473
474 return (*f)((OnigCodePoint )0xdf, ss, 2, arg);
475}
476
477extern int
478onigenc_apply_all_case_fold_with_map(int map_size,
479 const OnigPairCaseFoldCodes map[],
480 int ess_tsett_flag, OnigCaseFoldType flag,
481 OnigApplyAllCaseFoldFunc f, void* arg)
482{
483 OnigCodePoint code;
484 int i, r;
485
486 r = onigenc_ascii_apply_all_case_fold(flag, f, arg, 0);
487 if (r != 0) return r;
488
489 for (i = 0; i < map_size; i++) {
490 code = map[i].to;
491 r = (*f)(map[i].from, &code, 1, arg);
492 if (r != 0) return r;
493
494 code = map[i].from;
495 r = (*f)(map[i].to, &code, 1, arg);
496 if (r != 0) return r;
497 }
498
499 if (ess_tsett_flag != 0)
500 return ss_apply_all_case_fold(flag, f, arg);
501
502 return 0;
503}
504
505extern int
506onigenc_get_case_fold_codes_by_str_with_map(int map_size,
507 const OnigPairCaseFoldCodes map[],
508 int ess_tsett_flag, OnigCaseFoldType flag ARG_UNUSED,
509 const OnigUChar* p, const OnigUChar* end, OnigCaseFoldCodeItem items[])
510{
511 if (0x41 <= *p && *p <= 0x5a) {
512 items[0].byte_len = 1;
513 items[0].code_len = 1;
514 items[0].code[0] = (OnigCodePoint )(*p + 0x20);
515 if (*p == 0x53 && ess_tsett_flag != 0 && end > p + 1
516 && (*(p+1) == 0x53 || *(p+1) == 0x73)) {
517 /* SS */
518 items[1].byte_len = 2;
519 items[1].code_len = 1;
520 items[1].code[0] = (OnigCodePoint )0xdf;
521 return 2;
522 }
523 else
524 return 1;
525 }
526 else if (0x61 <= *p && *p <= 0x7a) {
527 items[0].byte_len = 1;
528 items[0].code_len = 1;
529 items[0].code[0] = (OnigCodePoint )(*p - 0x20);
530 if (*p == 0x73 && ess_tsett_flag != 0 && end > p + 1
531 && (*(p+1) == 0x73 || *(p+1) == 0x53)) {
532 /* ss */
533 items[1].byte_len = 2;
534 items[1].code_len = 1;
535 items[1].code[0] = (OnigCodePoint )0xdf;
536 return 2;
537 }
538 else
539 return 1;
540 }
541 else if (*p == 0xdf && ess_tsett_flag != 0) {
542 items[0].byte_len = 1;
543 items[0].code_len = 2;
544 items[0].code[0] = (OnigCodePoint )'s';
545 items[0].code[1] = (OnigCodePoint )'s';
546
547 items[1].byte_len = 1;
548 items[1].code_len = 2;
549 items[1].code[0] = (OnigCodePoint )'S';
550 items[1].code[1] = (OnigCodePoint )'S';
551
552 items[2].byte_len = 1;
553 items[2].code_len = 2;
554 items[2].code[0] = (OnigCodePoint )'s';
555 items[2].code[1] = (OnigCodePoint )'S';
556
557 items[3].byte_len = 1;
558 items[3].code_len = 2;
559 items[3].code[0] = (OnigCodePoint )'S';
560 items[3].code[1] = (OnigCodePoint )'s';
561
562 return 4;
563 }
564 else {
565 int i;
566
567 for (i = 0; i < map_size; i++) {
568 if (*p == map[i].from) {
569 items[0].byte_len = 1;
570 items[0].code_len = 1;
571 items[0].code[0] = map[i].to;
572 return 1;
573 }
574 else if (*p == map[i].to) {
575 items[0].byte_len = 1;
576 items[0].code_len = 1;
577 items[0].code[0] = map[i].from;
578 return 1;
579 }
580 }
581 }
582
583 return 0;
584}
585
586
587extern int
588onigenc_not_support_get_ctype_code_range(OnigCtype ctype ARG_UNUSED,
589 OnigCodePoint* sb_out ARG_UNUSED,
590 const OnigCodePoint* ranges[] ARG_UNUSED,
591 OnigEncoding enc)
592{
593 return ONIG_NO_SUPPORT_CONFIG;
594}
595
596extern int
597onigenc_is_mbc_newline_0x0a(const UChar* p, const UChar* end, OnigEncoding enc ARG_UNUSED)
598{
599 if (p < end) {
600 if (*p == 0x0a) return 1;
601 }
602 return 0;
603}
604
605/* for single byte encodings */
606extern int
607onigenc_ascii_mbc_case_fold(OnigCaseFoldType flag ARG_UNUSED, const UChar** p,
608 const UChar* end, UChar* lower, OnigEncoding enc ARG_UNUSED)
609{
610 *lower = ONIGENC_ASCII_CODE_TO_LOWER_CASE(**p);
611
612 (*p)++;
613 return 1; /* return byte length of converted char to lower */
614}
615
616#if 0
617extern int
618onigenc_ascii_is_mbc_ambiguous(OnigCaseFoldType flag ARG_UNUSED,
619 const UChar** pp, const UChar* end ARG_UNUSED)
620{
621 const UChar* p = *pp;
622
623 (*pp)++;
624 return ONIGENC_IS_ASCII_CODE_CASE_AMBIG(*p);
625}
626#endif
627
628extern int
629onigenc_single_byte_mbc_enc_len(const UChar* p ARG_UNUSED, const UChar* e ARG_UNUSED,
630 OnigEncoding enc ARG_UNUSED)
631{
632 return 1;
633}
634
635extern OnigCodePoint
636onigenc_single_byte_mbc_to_code(const UChar* p, const UChar* end ARG_UNUSED,
637 OnigEncoding enc ARG_UNUSED)
638{
639 return (OnigCodePoint )(*p);
640}
641
642extern int
643onigenc_single_byte_code_to_mbclen(OnigCodePoint code ARG_UNUSED, OnigEncoding enc ARG_UNUSED)
644{
645 return 1;
646}
647
648extern int
649onigenc_single_byte_code_to_mbc(OnigCodePoint code, UChar *buf, OnigEncoding enc ARG_UNUSED)
650{
651#ifdef RUBY
652 if (code > 0xff)
653 rb_raise(rb_eRangeError, "%u out of char range", code);
654#endif
655 *buf = (UChar )(code & 0xff);
656 return 1;
657}
658
659extern UChar*
660onigenc_single_byte_left_adjust_char_head(const UChar* start ARG_UNUSED,
661 const UChar* s,
662 const UChar* end ARG_UNUSED,
663 OnigEncoding enc ARG_UNUSED)
664{
665 return (UChar* )s;
666}
667
668extern int
669onigenc_always_true_is_allowed_reverse_match(const UChar* s ARG_UNUSED,
670 const UChar* end ARG_UNUSED,
671 OnigEncoding enc ARG_UNUSED)
672{
673 return TRUE;
674}
675
676extern int
677onigenc_always_false_is_allowed_reverse_match(const UChar* s ARG_UNUSED,
678 const UChar* end ARG_UNUSED,
679 OnigEncoding enc ARG_UNUSED)
680{
681 return FALSE;
682}
683
684extern int
685onigenc_ascii_is_code_ctype(OnigCodePoint code, unsigned int ctype,
686 OnigEncoding enc ARG_UNUSED)
687{
688 if (code < 128)
689 return ONIGENC_IS_ASCII_CODE_CTYPE(code, ctype);
690 else
691 return FALSE;
692}
693
694extern OnigCodePoint
695onigenc_mbn_mbc_to_code(OnigEncoding enc, const UChar* p, const UChar* end)
696{
697 int c, i, len;
698 OnigCodePoint n;
699
700 len = enclen(enc, p, end);
701 n = (OnigCodePoint )(*p++);
702 if (len == 1) return n;
703
704 for (i = 1; i < len; i++) {
705 if (p >= end) break;
706 c = *p++;
707 n <<= 8; n += c;
708 }
709 return n;
710}
711
712extern int
713onigenc_mbn_mbc_case_fold(OnigEncoding enc, OnigCaseFoldType flag ARG_UNUSED,
714 const UChar** pp, const UChar* end ARG_UNUSED,
715 UChar* lower)
716{
717 int len;
718 const UChar *p = *pp;
719
720 if (ONIGENC_IS_MBC_ASCII(p)) {
721 *lower = ONIGENC_ASCII_CODE_TO_LOWER_CASE(*p);
722 (*pp)++;
723 return 1;
724 }
725 else {
726 int i;
727
728 len = enclen(enc, p, end);
729 for (i = 0; i < len; i++) {
730 *lower++ = *p++;
731 }
732 (*pp) += len;
733 return len; /* return byte length of converted to lower char */
734 }
735}
736
737#if 0
738extern int
739onigenc_mbn_is_mbc_ambiguous(OnigEncoding enc, OnigCaseFoldType flag,
740 const UChar** pp, const UChar* end ARG_UNUSED)
741{
742 const UChar* p = *pp;
743
744 if (ONIGENC_IS_MBC_ASCII(p)) {
745 (*pp)++;
746 return ONIGENC_IS_ASCII_CODE_CASE_AMBIG(*p);
747 }
748
749 (*pp) += enclen(enc, p);
750 return FALSE;
751}
752#endif
753
754extern int
755onigenc_mb2_code_to_mbclen(OnigCodePoint code, OnigEncoding enc ARG_UNUSED)
756{
757 if (code <= 0xff) return 1;
758 if (code <= 0xffff) return 2;
759 return ONIGERR_TOO_BIG_WIDE_CHAR_VALUE;
760}
761
762extern int
763onigenc_mb4_code_to_mbclen(OnigCodePoint code, OnigEncoding enc ARG_UNUSED)
764{
765 if ((code & 0xff000000) != 0) return 4;
766 else if ((code & 0xff0000) != 0) return 3;
767 else if ((code & 0xff00) != 0) return 2;
768 else return 1;
769}
770
771extern int
772onigenc_mb2_code_to_mbc(OnigEncoding enc, OnigCodePoint code, UChar *buf)
773{
774 UChar *p = buf;
775
776 if ((code & 0xff00) != 0) {
777 *p++ = (UChar )((code >> 8) & 0xff);
778 }
779 *p++ = (UChar )(code & 0xff);
780
781#if 1
782 if (enclen(enc, buf, p) != (p - buf))
783 return ONIGERR_INVALID_CODE_POINT_VALUE;
784#endif
785 return (int )(p - buf);
786}
787
788extern int
789onigenc_mb4_code_to_mbc(OnigEncoding enc, OnigCodePoint code, UChar *buf)
790{
791 UChar *p = buf;
792
793 if ((code & 0xff000000) != 0) {
794 *p++ = (UChar )((code >> 24) & 0xff);
795 }
796 if ((code & 0xff0000) != 0 || p != buf) {
797 *p++ = (UChar )((code >> 16) & 0xff);
798 }
799 if ((code & 0xff00) != 0 || p != buf) {
800 *p++ = (UChar )((code >> 8) & 0xff);
801 }
802 *p++ = (UChar )(code & 0xff);
803
804#if 1
805 if (enclen(enc, buf, p) != (p - buf))
806 return ONIGERR_INVALID_CODE_POINT_VALUE;
807#endif
808 return (int )(p - buf);
809}
810
811extern int
812onigenc_minimum_property_name_to_ctype(OnigEncoding enc, const UChar* p, const UChar* end)
813{
814 static const PosixBracketEntryType PBS[] = {
815 POSIX_BRACKET_ENTRY_INIT("Alnum", ONIGENC_CTYPE_ALNUM),
816 POSIX_BRACKET_ENTRY_INIT("Alpha", ONIGENC_CTYPE_ALPHA),
817 POSIX_BRACKET_ENTRY_INIT("Blank", ONIGENC_CTYPE_BLANK),
818 POSIX_BRACKET_ENTRY_INIT("Cntrl", ONIGENC_CTYPE_CNTRL),
819 POSIX_BRACKET_ENTRY_INIT("Digit", ONIGENC_CTYPE_DIGIT),
820 POSIX_BRACKET_ENTRY_INIT("Graph", ONIGENC_CTYPE_GRAPH),
821 POSIX_BRACKET_ENTRY_INIT("Lower", ONIGENC_CTYPE_LOWER),
822 POSIX_BRACKET_ENTRY_INIT("Print", ONIGENC_CTYPE_PRINT),
823 POSIX_BRACKET_ENTRY_INIT("Punct", ONIGENC_CTYPE_PUNCT),
824 POSIX_BRACKET_ENTRY_INIT("Space", ONIGENC_CTYPE_SPACE),
825 POSIX_BRACKET_ENTRY_INIT("Upper", ONIGENC_CTYPE_UPPER),
826 POSIX_BRACKET_ENTRY_INIT("XDigit", ONIGENC_CTYPE_XDIGIT),
827 POSIX_BRACKET_ENTRY_INIT("ASCII", ONIGENC_CTYPE_ASCII),
828 POSIX_BRACKET_ENTRY_INIT("Word", ONIGENC_CTYPE_WORD),
829 };
830
831 const PosixBracketEntryType *pb;
832 int len;
833
834 len = onigenc_strlen(enc, p, end);
835 for (pb = PBS; pb < PBS + numberof(PBS); pb++) {
836 if (len == pb->len &&
837 onigenc_with_ascii_strnicmp(enc, p, end, pb->name, pb->len) == 0)
838 return pb->ctype;
839 }
840
841 return ONIGERR_INVALID_CHAR_PROPERTY_NAME;
842}
843
844extern int
845onigenc_mb2_is_code_ctype(OnigEncoding enc, OnigCodePoint code,
846 unsigned int ctype)
847{
848 if (code < 128)
849 return ONIGENC_IS_ASCII_CODE_CTYPE(code, ctype);
850 else {
851 if (CTYPE_IS_WORD_GRAPH_PRINT(ctype)) {
852 return (ONIGENC_CODE_TO_MBCLEN(enc, code) > 1 ? TRUE : FALSE);
853 }
854 }
855
856 return FALSE;
857}
858
859extern int
860onigenc_mb4_is_code_ctype(OnigEncoding enc, OnigCodePoint code,
861 unsigned int ctype)
862{
863 if (code < 128)
864 return ONIGENC_IS_ASCII_CODE_CTYPE(code, ctype);
865 else {
866 if (CTYPE_IS_WORD_GRAPH_PRINT(ctype)) {
867 return (ONIGENC_CODE_TO_MBCLEN(enc, code) > 1 ? TRUE : FALSE);
868 }
869 }
870
871 return FALSE;
872}
873
874extern int
875onigenc_with_ascii_strncmp(OnigEncoding enc, const UChar* p, const UChar* end,
876 const UChar* sascii /* ascii */, int n)
877{
878 int x, c;
879
880 while (n-- > 0) {
881 if (p >= end) return (int )(*sascii);
882
883 c = (int )ONIGENC_MBC_TO_CODE(enc, p, end);
884 x = *sascii - c;
885 if (x) return x;
886
887 sascii++;
888 p += enclen(enc, p, end);
889 }
890 return 0;
891}
892
893extern int
894onigenc_with_ascii_strnicmp(OnigEncoding enc, const UChar* p, const UChar* end,
895 const UChar* sascii /* ascii */, int n)
896{
897 int x, c;
898
899 while (n-- > 0) {
900 if (p >= end) return (int )(*sascii);
901
902 c = (int )ONIGENC_MBC_TO_CODE(enc, p, end);
903 if (ONIGENC_IS_ASCII_CODE(c))
904 c = ONIGENC_ASCII_CODE_TO_LOWER_CASE(c);
905 x = ONIGENC_ASCII_CODE_TO_LOWER_CASE(*sascii) - c;
906 if (x) return x;
907
908 sascii++;
909 p += enclen(enc, p, end);
910 }
911 return 0;
912}
913
914#if 0
915/* Property management */
916static int
917resize_property_list(int new_size, const OnigCodePoint*** plist, int* psize)
918{
919 size_t size;
920 const OnigCodePoint **list = *plist;
921
922 size = sizeof(OnigCodePoint*) * new_size;
923 if (IS_NULL(list)) {
924 list = (const OnigCodePoint** )xmalloc(size);
925 if (IS_NULL(list)) return ONIGERR_MEMORY;
926 }
927 else {
928 const OnigCodePoint **tmp;
929 tmp = (const OnigCodePoint** )xrealloc((void* )list, size);
930 if (IS_NULL(tmp)) return ONIGERR_MEMORY;
931 list = tmp;
932 }
933
934 *plist = list;
935 *psize = new_size;
936
937 return 0;
938}
939
940extern int
941onigenc_property_list_add_property(UChar* name, const OnigCodePoint* prop,
942 hash_table_type **table, const OnigCodePoint*** plist, int *pnum,
943 int *psize)
944{
945#define PROP_INIT_SIZE 16
946
947 int r;
948
949 if (*psize <= *pnum) {
950 int new_size = (*psize == 0 ? PROP_INIT_SIZE : *psize * 2);
951 r = resize_property_list(new_size, plist, psize);
952 if (r != 0) return r;
953 }
954
955 (*plist)[*pnum] = prop;
956
957 if (ONIG_IS_NULL(*table)) {
958 *table = onig_st_init_strend_table_with_size(PROP_INIT_SIZE);
959 if (ONIG_IS_NULL(*table)) return ONIGERR_MEMORY;
960 }
961
962 *pnum = *pnum + 1;
963 onig_st_insert_strend(*table, name, name + strlen((char* )name),
964 (hash_data_type )(*pnum + ONIGENC_MAX_STD_CTYPE));
965 return 0;
966}
967#endif
968
969extern int
970onigenc_ascii_only_case_map(OnigCaseFoldType* flagP, const OnigUChar** pp, const OnigUChar* end,
971 OnigUChar* to, OnigUChar* to_end, const struct OnigEncodingTypeST* enc)
972{
973 OnigCodePoint code;
974 OnigUChar *to_start = to;
975 OnigCaseFoldType flags = *flagP;
976 int codepoint_length;
977
978 while (*pp < end && to < to_end) {
979 codepoint_length = ONIGENC_PRECISE_MBC_ENC_LEN(enc, *pp, end);
980 if (codepoint_length < 0)
981 return codepoint_length; /* encoding invalid */
982 code = ONIGENC_MBC_TO_CODE(enc, *pp, end);
983 *pp += codepoint_length;
984
985 if (code >= 'a' && code <= 'z' && (flags & ONIGENC_CASE_UPCASE)) {
986 flags |= ONIGENC_CASE_MODIFIED;
987 code -= 'a' - 'A';
988 }
989 else if (code >= 'A' && code <= 'Z' &&
990 (flags & (ONIGENC_CASE_DOWNCASE | ONIGENC_CASE_FOLD))) {
991 flags |= ONIGENC_CASE_MODIFIED;
992 code += 'a' - 'A';
993 }
994 to += ONIGENC_CODE_TO_MBC(enc, code, to);
995 if (flags & ONIGENC_CASE_TITLECASE) /* switch from titlecase to lowercase for capitalize */
996 flags ^= (ONIGENC_CASE_UPCASE | ONIGENC_CASE_DOWNCASE | ONIGENC_CASE_TITLECASE);
997 }
998 *flagP = flags;
999 return (int )(to - to_start);
1000}
1001
1002extern int
1003onigenc_single_byte_ascii_only_case_map(OnigCaseFoldType* flagP, const OnigUChar** pp,
1004 const OnigUChar* end, OnigUChar* to, OnigUChar* to_end,
1005 const struct OnigEncodingTypeST* enc)
1006{
1007 OnigCodePoint code;
1008 OnigUChar *to_start = to;
1009 OnigCaseFoldType flags = *flagP;
1010
1011 while (*pp < end && to < to_end) {
1012 code = *(*pp)++;
1013
1014 if (code >= 'a' && code <= 'z' && (flags & ONIGENC_CASE_UPCASE)) {
1015 flags |= ONIGENC_CASE_MODIFIED;
1016 code -= 'a' - 'A';
1017 }
1018 else if (code >= 'A' && code <= 'Z' &&
1019 (flags & (ONIGENC_CASE_DOWNCASE | ONIGENC_CASE_FOLD))) {
1020 flags |= ONIGENC_CASE_MODIFIED;
1021 code += 'a' - 'A';
1022 }
1023 *to++ = code;
1024 if (flags & ONIGENC_CASE_TITLECASE) /* switch from titlecase to lowercase for capitalize */
1025 flags ^= (ONIGENC_CASE_UPCASE | ONIGENC_CASE_DOWNCASE | ONIGENC_CASE_TITLECASE);
1026 }
1027 *flagP = flags;
1028 return (int )(to - to_start);
1029}
xrealloc
#define xrealloc
Old name of ruby_xrealloc.
Definition xmalloc.h:56
xmalloc
#define xmalloc
Old name of ruby_xmalloc.
Definition xmalloc.h:53
rb_eRangeError
VALUE rb_eRangeError
RangeError exception.
Definition error.c:1434
len
int len
Length of the buffer.
Definition io.h:8
PosixBracketEntryType
Definition regenc.h:119
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