source: python/trunk/Modules/expat/xmltok.c

Last change on this file was 391, checked in by dmik, 11 years ago

python: Merge vendor 2.7.6 to trunk.
  • Property svn:eol-style set to native
File size: 40.4 KB
RevLine 
[2]1/* Copyright (c) 1998, 1999 Thai Open Source Software Center Ltd
2 See the file COPYING for copying permission.
3*/
4
[391]5#include <stddef.h>
6
[2]7#ifdef COMPILED_FROM_DSP
8#include "winconfig.h"
9#elif defined(MACOS_CLASSIC)
10#include "macconfig.h"
[391]11#elif defined(__amigaos__)
[2]12#include "amigaconfig.h"
[391]13#elif defined(__WATCOMC__)
14#include "watcomconfig.h"
[2]15#else
16#ifdef HAVE_EXPAT_CONFIG_H
17#include <expat_config.h>
18#endif
19#endif /* ndef COMPILED_FROM_DSP */
20
21#include "expat_external.h"
22#include "internal.h"
23#include "xmltok.h"
24#include "nametab.h"
25
26#ifdef XML_DTD
27#define IGNORE_SECTION_TOK_VTABLE , PREFIX(ignoreSectionTok)
28#else
29#define IGNORE_SECTION_TOK_VTABLE /* as nothing */
30#endif
31
32#define VTABLE1 \
33 { PREFIX(prologTok), PREFIX(contentTok), \
34 PREFIX(cdataSectionTok) IGNORE_SECTION_TOK_VTABLE }, \
35 { PREFIX(attributeValueTok), PREFIX(entityValueTok) }, \
36 PREFIX(sameName), \
37 PREFIX(nameMatchesAscii), \
38 PREFIX(nameLength), \
39 PREFIX(skipS), \
40 PREFIX(getAtts), \
41 PREFIX(charRefNumber), \
42 PREFIX(predefinedEntityName), \
43 PREFIX(updatePosition), \
44 PREFIX(isPublicId)
45
46#define VTABLE VTABLE1, PREFIX(toUtf8), PREFIX(toUtf16)
47
48#define UCS2_GET_NAMING(pages, hi, lo) \
49 (namingBitmap[(pages[hi] << 3) + ((lo) >> 5)] & (1 << ((lo) & 0x1F)))
50
51/* A 2 byte UTF-8 representation splits the characters 11 bits between
52 the bottom 5 and 6 bits of the bytes. We need 8 bits to index into
53 pages, 3 bits to add to that index and 5 bits to generate the mask.
54*/
55#define UTF8_GET_NAMING2(pages, byte) \
56 (namingBitmap[((pages)[(((byte)[0]) >> 2) & 7] << 3) \
57 + ((((byte)[0]) & 3) << 1) \
58 + ((((byte)[1]) >> 5) & 1)] \
59 & (1 << (((byte)[1]) & 0x1F)))
60
61/* A 3 byte UTF-8 representation splits the characters 16 bits between
62 the bottom 4, 6 and 6 bits of the bytes. We need 8 bits to index
63 into pages, 3 bits to add to that index and 5 bits to generate the
64 mask.
65*/
66#define UTF8_GET_NAMING3(pages, byte) \
67 (namingBitmap[((pages)[((((byte)[0]) & 0xF) << 4) \
68 + ((((byte)[1]) >> 2) & 0xF)] \
69 << 3) \
70 + ((((byte)[1]) & 3) << 1) \
71 + ((((byte)[2]) >> 5) & 1)] \
72 & (1 << (((byte)[2]) & 0x1F)))
73
74#define UTF8_GET_NAMING(pages, p, n) \
75 ((n) == 2 \
76 ? UTF8_GET_NAMING2(pages, (const unsigned char *)(p)) \
77 : ((n) == 3 \
78 ? UTF8_GET_NAMING3(pages, (const unsigned char *)(p)) \
79 : 0))
80
81/* Detection of invalid UTF-8 sequences is based on Table 3.1B
82 of Unicode 3.2: http://www.unicode.org/unicode/reports/tr28/
83 with the additional restriction of not allowing the Unicode
84 code points 0xFFFF and 0xFFFE (sequences EF,BF,BF and EF,BF,BE).
85 Implementation details:
86 (A & 0x80) == 0 means A < 0x80
87 and
88 (A & 0xC0) == 0xC0 means A > 0xBF
89*/
90
91#define UTF8_INVALID2(p) \
92 ((*p) < 0xC2 || ((p)[1] & 0x80) == 0 || ((p)[1] & 0xC0) == 0xC0)
93
94#define UTF8_INVALID3(p) \
95 (((p)[2] & 0x80) == 0 \
96 || \
97 ((*p) == 0xEF && (p)[1] == 0xBF \
98 ? \
99 (p)[2] > 0xBD \
100 : \
101 ((p)[2] & 0xC0) == 0xC0) \
102 || \
103 ((*p) == 0xE0 \
104 ? \
105 (p)[1] < 0xA0 || ((p)[1] & 0xC0) == 0xC0 \
106 : \
107 ((p)[1] & 0x80) == 0 \
108 || \
109 ((*p) == 0xED ? (p)[1] > 0x9F : ((p)[1] & 0xC0) == 0xC0)))
110
111#define UTF8_INVALID4(p) \
112 (((p)[3] & 0x80) == 0 || ((p)[3] & 0xC0) == 0xC0 \
113 || \
114 ((p)[2] & 0x80) == 0 || ((p)[2] & 0xC0) == 0xC0 \
115 || \
116 ((*p) == 0xF0 \
117 ? \
118 (p)[1] < 0x90 || ((p)[1] & 0xC0) == 0xC0 \
119 : \
120 ((p)[1] & 0x80) == 0 \
121 || \
122 ((*p) == 0xF4 ? (p)[1] > 0x8F : ((p)[1] & 0xC0) == 0xC0)))
123
124static int PTRFASTCALL
125isNever(const ENCODING *enc, const char *p)
126{
127 return 0;
128}
129
130static int PTRFASTCALL
131utf8_isName2(const ENCODING *enc, const char *p)
132{
133 return UTF8_GET_NAMING2(namePages, (const unsigned char *)p);
134}
135
136static int PTRFASTCALL
137utf8_isName3(const ENCODING *enc, const char *p)
138{
139 return UTF8_GET_NAMING3(namePages, (const unsigned char *)p);
140}
141
142#define utf8_isName4 isNever
143
144static int PTRFASTCALL
145utf8_isNmstrt2(const ENCODING *enc, const char *p)
146{
147 return UTF8_GET_NAMING2(nmstrtPages, (const unsigned char *)p);
148}
149
150static int PTRFASTCALL
151utf8_isNmstrt3(const ENCODING *enc, const char *p)
152{
153 return UTF8_GET_NAMING3(nmstrtPages, (const unsigned char *)p);
154}
155
156#define utf8_isNmstrt4 isNever
157
158static int PTRFASTCALL
159utf8_isInvalid2(const ENCODING *enc, const char *p)
160{
161 return UTF8_INVALID2((const unsigned char *)p);
162}
163
164static int PTRFASTCALL
165utf8_isInvalid3(const ENCODING *enc, const char *p)
166{
167 return UTF8_INVALID3((const unsigned char *)p);
168}
169
170static int PTRFASTCALL
171utf8_isInvalid4(const ENCODING *enc, const char *p)
172{
173 return UTF8_INVALID4((const unsigned char *)p);
174}
175
176struct normal_encoding {
177 ENCODING enc;
178 unsigned char type[256];
179#ifdef XML_MIN_SIZE
180 int (PTRFASTCALL *byteType)(const ENCODING *, const char *);
181 int (PTRFASTCALL *isNameMin)(const ENCODING *, const char *);
182 int (PTRFASTCALL *isNmstrtMin)(const ENCODING *, const char *);
183 int (PTRFASTCALL *byteToAscii)(const ENCODING *, const char *);
184 int (PTRCALL *charMatches)(const ENCODING *, const char *, int);
185#endif /* XML_MIN_SIZE */
186 int (PTRFASTCALL *isName2)(const ENCODING *, const char *);
187 int (PTRFASTCALL *isName3)(const ENCODING *, const char *);
188 int (PTRFASTCALL *isName4)(const ENCODING *, const char *);
189 int (PTRFASTCALL *isNmstrt2)(const ENCODING *, const char *);
190 int (PTRFASTCALL *isNmstrt3)(const ENCODING *, const char *);
191 int (PTRFASTCALL *isNmstrt4)(const ENCODING *, const char *);
192 int (PTRFASTCALL *isInvalid2)(const ENCODING *, const char *);
193 int (PTRFASTCALL *isInvalid3)(const ENCODING *, const char *);
194 int (PTRFASTCALL *isInvalid4)(const ENCODING *, const char *);
195};
196
197#define AS_NORMAL_ENCODING(enc) ((const struct normal_encoding *) (enc))
198
199#ifdef XML_MIN_SIZE
200
201#define STANDARD_VTABLE(E) \
202 E ## byteType, \
203 E ## isNameMin, \
204 E ## isNmstrtMin, \
205 E ## byteToAscii, \
206 E ## charMatches,
207
208#else
209
210#define STANDARD_VTABLE(E) /* as nothing */
211
212#endif
213
214#define NORMAL_VTABLE(E) \
215 E ## isName2, \
216 E ## isName3, \
217 E ## isName4, \
218 E ## isNmstrt2, \
219 E ## isNmstrt3, \
220 E ## isNmstrt4, \
221 E ## isInvalid2, \
222 E ## isInvalid3, \
223 E ## isInvalid4
224
225static int FASTCALL checkCharRefNumber(int);
226
227#include "xmltok_impl.h"
228#include "ascii.h"
229
230#ifdef XML_MIN_SIZE
231#define sb_isNameMin isNever
232#define sb_isNmstrtMin isNever
233#endif
234
235#ifdef XML_MIN_SIZE
236#define MINBPC(enc) ((enc)->minBytesPerChar)
237#else
238/* minimum bytes per character */
239#define MINBPC(enc) 1
240#endif
241
242#define SB_BYTE_TYPE(enc, p) \
243 (((struct normal_encoding *)(enc))->type[(unsigned char)*(p)])
244
245#ifdef XML_MIN_SIZE
246static int PTRFASTCALL
247sb_byteType(const ENCODING *enc, const char *p)
248{
249 return SB_BYTE_TYPE(enc, p);
250}
251#define BYTE_TYPE(enc, p) \
252 (AS_NORMAL_ENCODING(enc)->byteType(enc, p))
253#else
254#define BYTE_TYPE(enc, p) SB_BYTE_TYPE(enc, p)
255#endif
256
257#ifdef XML_MIN_SIZE
258#define BYTE_TO_ASCII(enc, p) \
259 (AS_NORMAL_ENCODING(enc)->byteToAscii(enc, p))
260static int PTRFASTCALL
261sb_byteToAscii(const ENCODING *enc, const char *p)
262{
263 return *p;
264}
265#else
266#define BYTE_TO_ASCII(enc, p) (*(p))
267#endif
268
269#define IS_NAME_CHAR(enc, p, n) \
270 (AS_NORMAL_ENCODING(enc)->isName ## n(enc, p))
271#define IS_NMSTRT_CHAR(enc, p, n) \
272 (AS_NORMAL_ENCODING(enc)->isNmstrt ## n(enc, p))
273#define IS_INVALID_CHAR(enc, p, n) \
274 (AS_NORMAL_ENCODING(enc)->isInvalid ## n(enc, p))
275
276#ifdef XML_MIN_SIZE
277#define IS_NAME_CHAR_MINBPC(enc, p) \
278 (AS_NORMAL_ENCODING(enc)->isNameMin(enc, p))
279#define IS_NMSTRT_CHAR_MINBPC(enc, p) \
280 (AS_NORMAL_ENCODING(enc)->isNmstrtMin(enc, p))
281#else
282#define IS_NAME_CHAR_MINBPC(enc, p) (0)
283#define IS_NMSTRT_CHAR_MINBPC(enc, p) (0)
284#endif
285
286#ifdef XML_MIN_SIZE
287#define CHAR_MATCHES(enc, p, c) \
288 (AS_NORMAL_ENCODING(enc)->charMatches(enc, p, c))
289static int PTRCALL
290sb_charMatches(const ENCODING *enc, const char *p, int c)
291{
292 return *p == c;
293}
294#else
295/* c is an ASCII character */
296#define CHAR_MATCHES(enc, p, c) (*(p) == c)
297#endif
298
299#define PREFIX(ident) normal_ ## ident
[391]300#define XML_TOK_IMPL_C
[2]301#include "xmltok_impl.c"
[391]302#undef XML_TOK_IMPL_C
[2]303
304#undef MINBPC
305#undef BYTE_TYPE
306#undef BYTE_TO_ASCII
307#undef CHAR_MATCHES
308#undef IS_NAME_CHAR
309#undef IS_NAME_CHAR_MINBPC
310#undef IS_NMSTRT_CHAR
311#undef IS_NMSTRT_CHAR_MINBPC
312#undef IS_INVALID_CHAR
313
314enum { /* UTF8_cvalN is value of masked first byte of N byte sequence */
315 UTF8_cval1 = 0x00,
316 UTF8_cval2 = 0xc0,
317 UTF8_cval3 = 0xe0,
318 UTF8_cval4 = 0xf0
319};
320
321static void PTRCALL
322utf8_toUtf8(const ENCODING *enc,
323 const char **fromP, const char *fromLim,
324 char **toP, const char *toLim)
325{
326 char *to;
327 const char *from;
328 if (fromLim - *fromP > toLim - *toP) {
329 /* Avoid copying partial characters. */
330 for (fromLim = *fromP + (toLim - *toP); fromLim > *fromP; fromLim--)
331 if (((unsigned char)fromLim[-1] & 0xc0) != 0x80)
332 break;
333 }
334 for (to = *toP, from = *fromP; from != fromLim; from++, to++)
335 *to = *from;
336 *fromP = from;
337 *toP = to;
338}
339
340static void PTRCALL
341utf8_toUtf16(const ENCODING *enc,
342 const char **fromP, const char *fromLim,
343 unsigned short **toP, const unsigned short *toLim)
344{
345 unsigned short *to = *toP;
346 const char *from = *fromP;
347 while (from != fromLim && to != toLim) {
348 switch (((struct normal_encoding *)enc)->type[(unsigned char)*from]) {
349 case BT_LEAD2:
350 *to++ = (unsigned short)(((from[0] & 0x1f) << 6) | (from[1] & 0x3f));
351 from += 2;
352 break;
353 case BT_LEAD3:
354 *to++ = (unsigned short)(((from[0] & 0xf) << 12)
355 | ((from[1] & 0x3f) << 6) | (from[2] & 0x3f));
356 from += 3;
357 break;
358 case BT_LEAD4:
359 {
360 unsigned long n;
361 if (to + 1 == toLim)
362 goto after;
363 n = ((from[0] & 0x7) << 18) | ((from[1] & 0x3f) << 12)
364 | ((from[2] & 0x3f) << 6) | (from[3] & 0x3f);
365 n -= 0x10000;
366 to[0] = (unsigned short)((n >> 10) | 0xD800);
367 to[1] = (unsigned short)((n & 0x3FF) | 0xDC00);
368 to += 2;
369 from += 4;
370 }
371 break;
372 default:
373 *to++ = *from++;
374 break;
375 }
376 }
377after:
378 *fromP = from;
379 *toP = to;
380}
381
382#ifdef XML_NS
383static const struct normal_encoding utf8_encoding_ns = {
384 { VTABLE1, utf8_toUtf8, utf8_toUtf16, 1, 1, 0 },
385 {
386#include "asciitab.h"
387#include "utf8tab.h"
388 },
389 STANDARD_VTABLE(sb_) NORMAL_VTABLE(utf8_)
390};
391#endif
392
393static const struct normal_encoding utf8_encoding = {
394 { VTABLE1, utf8_toUtf8, utf8_toUtf16, 1, 1, 0 },
395 {
396#define BT_COLON BT_NMSTRT
397#include "asciitab.h"
398#undef BT_COLON
399#include "utf8tab.h"
400 },
401 STANDARD_VTABLE(sb_) NORMAL_VTABLE(utf8_)
402};
403
404#ifdef XML_NS
405
406static const struct normal_encoding internal_utf8_encoding_ns = {
407 { VTABLE1, utf8_toUtf8, utf8_toUtf16, 1, 1, 0 },
408 {
409#include "iasciitab.h"
410#include "utf8tab.h"
411 },
412 STANDARD_VTABLE(sb_) NORMAL_VTABLE(utf8_)
413};
414
415#endif
416
417static const struct normal_encoding internal_utf8_encoding = {
418 { VTABLE1, utf8_toUtf8, utf8_toUtf16, 1, 1, 0 },
419 {
420#define BT_COLON BT_NMSTRT
421#include "iasciitab.h"
422#undef BT_COLON
423#include "utf8tab.h"
424 },
425 STANDARD_VTABLE(sb_) NORMAL_VTABLE(utf8_)
426};
427
428static void PTRCALL
429latin1_toUtf8(const ENCODING *enc,
430 const char **fromP, const char *fromLim,
431 char **toP, const char *toLim)
432{
433 for (;;) {
434 unsigned char c;
435 if (*fromP == fromLim)
436 break;
437 c = (unsigned char)**fromP;
438 if (c & 0x80) {
439 if (toLim - *toP < 2)
440 break;
441 *(*toP)++ = (char)((c >> 6) | UTF8_cval2);
442 *(*toP)++ = (char)((c & 0x3f) | 0x80);
443 (*fromP)++;
444 }
445 else {
446 if (*toP == toLim)
447 break;
448 *(*toP)++ = *(*fromP)++;
449 }
450 }
451}
452
453static void PTRCALL
454latin1_toUtf16(const ENCODING *enc,
455 const char **fromP, const char *fromLim,
456 unsigned short **toP, const unsigned short *toLim)
457{
458 while (*fromP != fromLim && *toP != toLim)
459 *(*toP)++ = (unsigned char)*(*fromP)++;
460}
461
462#ifdef XML_NS
463
464static const struct normal_encoding latin1_encoding_ns = {
465 { VTABLE1, latin1_toUtf8, latin1_toUtf16, 1, 0, 0 },
466 {
467#include "asciitab.h"
468#include "latin1tab.h"
469 },
470 STANDARD_VTABLE(sb_)
471};
472
473#endif
474
475static const struct normal_encoding latin1_encoding = {
476 { VTABLE1, latin1_toUtf8, latin1_toUtf16, 1, 0, 0 },
477 {
478#define BT_COLON BT_NMSTRT
479#include "asciitab.h"
480#undef BT_COLON
481#include "latin1tab.h"
482 },
483 STANDARD_VTABLE(sb_)
484};
485
486static void PTRCALL
487ascii_toUtf8(const ENCODING *enc,
488 const char **fromP, const char *fromLim,
489 char **toP, const char *toLim)
490{
491 while (*fromP != fromLim && *toP != toLim)
492 *(*toP)++ = *(*fromP)++;
493}
494
495#ifdef XML_NS
496
497static const struct normal_encoding ascii_encoding_ns = {
498 { VTABLE1, ascii_toUtf8, latin1_toUtf16, 1, 1, 0 },
499 {
500#include "asciitab.h"
501/* BT_NONXML == 0 */
502 },
503 STANDARD_VTABLE(sb_)
504};
505
506#endif
507
508static const struct normal_encoding ascii_encoding = {
509 { VTABLE1, ascii_toUtf8, latin1_toUtf16, 1, 1, 0 },
510 {
511#define BT_COLON BT_NMSTRT
512#include "asciitab.h"
513#undef BT_COLON
514/* BT_NONXML == 0 */
515 },
516 STANDARD_VTABLE(sb_)
517};
518
519static int PTRFASTCALL
520unicode_byte_type(char hi, char lo)
521{
522 switch ((unsigned char)hi) {
523 case 0xD8: case 0xD9: case 0xDA: case 0xDB:
524 return BT_LEAD4;
525 case 0xDC: case 0xDD: case 0xDE: case 0xDF:
526 return BT_TRAIL;
527 case 0xFF:
528 switch ((unsigned char)lo) {
529 case 0xFF:
530 case 0xFE:
531 return BT_NONXML;
532 }
533 break;
534 }
535 return BT_NONASCII;
536}
537
538#define DEFINE_UTF16_TO_UTF8(E) \
539static void PTRCALL \
540E ## toUtf8(const ENCODING *enc, \
541 const char **fromP, const char *fromLim, \
542 char **toP, const char *toLim) \
543{ \
544 const char *from; \
545 for (from = *fromP; from != fromLim; from += 2) { \
546 int plane; \
547 unsigned char lo2; \
548 unsigned char lo = GET_LO(from); \
549 unsigned char hi = GET_HI(from); \
550 switch (hi) { \
551 case 0: \
552 if (lo < 0x80) { \
553 if (*toP == toLim) { \
554 *fromP = from; \
555 return; \
556 } \
557 *(*toP)++ = lo; \
558 break; \
559 } \
560 /* fall through */ \
561 case 0x1: case 0x2: case 0x3: \
562 case 0x4: case 0x5: case 0x6: case 0x7: \
563 if (toLim - *toP < 2) { \
564 *fromP = from; \
565 return; \
566 } \
567 *(*toP)++ = ((lo >> 6) | (hi << 2) | UTF8_cval2); \
568 *(*toP)++ = ((lo & 0x3f) | 0x80); \
569 break; \
570 default: \
571 if (toLim - *toP < 3) { \
572 *fromP = from; \
573 return; \
574 } \
575 /* 16 bits divided 4, 6, 6 amongst 3 bytes */ \
576 *(*toP)++ = ((hi >> 4) | UTF8_cval3); \
577 *(*toP)++ = (((hi & 0xf) << 2) | (lo >> 6) | 0x80); \
578 *(*toP)++ = ((lo & 0x3f) | 0x80); \
579 break; \
580 case 0xD8: case 0xD9: case 0xDA: case 0xDB: \
581 if (toLim - *toP < 4) { \
582 *fromP = from; \
583 return; \
584 } \
585 plane = (((hi & 0x3) << 2) | ((lo >> 6) & 0x3)) + 1; \
586 *(*toP)++ = ((plane >> 2) | UTF8_cval4); \
587 *(*toP)++ = (((lo >> 2) & 0xF) | ((plane & 0x3) << 4) | 0x80); \
588 from += 2; \
589 lo2 = GET_LO(from); \
590 *(*toP)++ = (((lo & 0x3) << 4) \
591 | ((GET_HI(from) & 0x3) << 2) \
592 | (lo2 >> 6) \
593 | 0x80); \
594 *(*toP)++ = ((lo2 & 0x3f) | 0x80); \
595 break; \
596 } \
597 } \
598 *fromP = from; \
599}
600
601#define DEFINE_UTF16_TO_UTF16(E) \
602static void PTRCALL \
603E ## toUtf16(const ENCODING *enc, \
604 const char **fromP, const char *fromLim, \
605 unsigned short **toP, const unsigned short *toLim) \
606{ \
607 /* Avoid copying first half only of surrogate */ \
608 if (fromLim - *fromP > ((toLim - *toP) << 1) \
609 && (GET_HI(fromLim - 2) & 0xF8) == 0xD8) \
610 fromLim -= 2; \
611 for (; *fromP != fromLim && *toP != toLim; *fromP += 2) \
612 *(*toP)++ = (GET_HI(*fromP) << 8) | GET_LO(*fromP); \
613}
614
615#define SET2(ptr, ch) \
616 (((ptr)[0] = ((ch) & 0xff)), ((ptr)[1] = ((ch) >> 8)))
617#define GET_LO(ptr) ((unsigned char)(ptr)[0])
618#define GET_HI(ptr) ((unsigned char)(ptr)[1])
619
620DEFINE_UTF16_TO_UTF8(little2_)
621DEFINE_UTF16_TO_UTF16(little2_)
622
623#undef SET2
624#undef GET_LO
625#undef GET_HI
626
627#define SET2(ptr, ch) \
628 (((ptr)[0] = ((ch) >> 8)), ((ptr)[1] = ((ch) & 0xFF)))
629#define GET_LO(ptr) ((unsigned char)(ptr)[1])
630#define GET_HI(ptr) ((unsigned char)(ptr)[0])
631
632DEFINE_UTF16_TO_UTF8(big2_)
633DEFINE_UTF16_TO_UTF16(big2_)
634
635#undef SET2
636#undef GET_LO
637#undef GET_HI
638
639#define LITTLE2_BYTE_TYPE(enc, p) \
640 ((p)[1] == 0 \
641 ? ((struct normal_encoding *)(enc))->type[(unsigned char)*(p)] \
642 : unicode_byte_type((p)[1], (p)[0]))
643#define LITTLE2_BYTE_TO_ASCII(enc, p) ((p)[1] == 0 ? (p)[0] : -1)
644#define LITTLE2_CHAR_MATCHES(enc, p, c) ((p)[1] == 0 && (p)[0] == c)
645#define LITTLE2_IS_NAME_CHAR_MINBPC(enc, p) \
646 UCS2_GET_NAMING(namePages, (unsigned char)p[1], (unsigned char)p[0])
647#define LITTLE2_IS_NMSTRT_CHAR_MINBPC(enc, p) \
648 UCS2_GET_NAMING(nmstrtPages, (unsigned char)p[1], (unsigned char)p[0])
649
650#ifdef XML_MIN_SIZE
651
652static int PTRFASTCALL
653little2_byteType(const ENCODING *enc, const char *p)
654{
655 return LITTLE2_BYTE_TYPE(enc, p);
656}
657
658static int PTRFASTCALL
659little2_byteToAscii(const ENCODING *enc, const char *p)
660{
661 return LITTLE2_BYTE_TO_ASCII(enc, p);
662}
663
664static int PTRCALL
665little2_charMatches(const ENCODING *enc, const char *p, int c)
666{
667 return LITTLE2_CHAR_MATCHES(enc, p, c);
668}
669
670static int PTRFASTCALL
671little2_isNameMin(const ENCODING *enc, const char *p)
672{
673 return LITTLE2_IS_NAME_CHAR_MINBPC(enc, p);
674}
675
676static int PTRFASTCALL
677little2_isNmstrtMin(const ENCODING *enc, const char *p)
678{
679 return LITTLE2_IS_NMSTRT_CHAR_MINBPC(enc, p);
680}
681
682#undef VTABLE
683#define VTABLE VTABLE1, little2_toUtf8, little2_toUtf16
684
685#else /* not XML_MIN_SIZE */
686
687#undef PREFIX
688#define PREFIX(ident) little2_ ## ident
689#define MINBPC(enc) 2
690/* CHAR_MATCHES is guaranteed to have MINBPC bytes available. */
691#define BYTE_TYPE(enc, p) LITTLE2_BYTE_TYPE(enc, p)
692#define BYTE_TO_ASCII(enc, p) LITTLE2_BYTE_TO_ASCII(enc, p)
693#define CHAR_MATCHES(enc, p, c) LITTLE2_CHAR_MATCHES(enc, p, c)
694#define IS_NAME_CHAR(enc, p, n) 0
695#define IS_NAME_CHAR_MINBPC(enc, p) LITTLE2_IS_NAME_CHAR_MINBPC(enc, p)
696#define IS_NMSTRT_CHAR(enc, p, n) (0)
697#define IS_NMSTRT_CHAR_MINBPC(enc, p) LITTLE2_IS_NMSTRT_CHAR_MINBPC(enc, p)
698
[391]699#define XML_TOK_IMPL_C
[2]700#include "xmltok_impl.c"
[391]701#undef XML_TOK_IMPL_C
[2]702
703#undef MINBPC
704#undef BYTE_TYPE
705#undef BYTE_TO_ASCII
706#undef CHAR_MATCHES
707#undef IS_NAME_CHAR
708#undef IS_NAME_CHAR_MINBPC
709#undef IS_NMSTRT_CHAR
710#undef IS_NMSTRT_CHAR_MINBPC
711#undef IS_INVALID_CHAR
712
713#endif /* not XML_MIN_SIZE */
714
715#ifdef XML_NS
716
717static const struct normal_encoding little2_encoding_ns = {
718 { VTABLE, 2, 0,
719#if BYTEORDER == 1234
720 1
721#else
722 0
723#endif
724 },
725 {
726#include "asciitab.h"
727#include "latin1tab.h"
728 },
729 STANDARD_VTABLE(little2_)
730};
731
732#endif
733
734static const struct normal_encoding little2_encoding = {
735 { VTABLE, 2, 0,
736#if BYTEORDER == 1234
737 1
738#else
739 0
740#endif
741 },
742 {
743#define BT_COLON BT_NMSTRT
744#include "asciitab.h"
745#undef BT_COLON
746#include "latin1tab.h"
747 },
748 STANDARD_VTABLE(little2_)
749};
750
751#if BYTEORDER != 4321
752
753#ifdef XML_NS
754
755static const struct normal_encoding internal_little2_encoding_ns = {
756 { VTABLE, 2, 0, 1 },
757 {
758#include "iasciitab.h"
759#include "latin1tab.h"
760 },
761 STANDARD_VTABLE(little2_)
762};
763
764#endif
765
766static const struct normal_encoding internal_little2_encoding = {
767 { VTABLE, 2, 0, 1 },
768 {
769#define BT_COLON BT_NMSTRT
770#include "iasciitab.h"
771#undef BT_COLON
772#include "latin1tab.h"
773 },
774 STANDARD_VTABLE(little2_)
775};
776
777#endif
778
779
780#define BIG2_BYTE_TYPE(enc, p) \
781 ((p)[0] == 0 \
782 ? ((struct normal_encoding *)(enc))->type[(unsigned char)(p)[1]] \
783 : unicode_byte_type((p)[0], (p)[1]))
784#define BIG2_BYTE_TO_ASCII(enc, p) ((p)[0] == 0 ? (p)[1] : -1)
785#define BIG2_CHAR_MATCHES(enc, p, c) ((p)[0] == 0 && (p)[1] == c)
786#define BIG2_IS_NAME_CHAR_MINBPC(enc, p) \
787 UCS2_GET_NAMING(namePages, (unsigned char)p[0], (unsigned char)p[1])
788#define BIG2_IS_NMSTRT_CHAR_MINBPC(enc, p) \
789 UCS2_GET_NAMING(nmstrtPages, (unsigned char)p[0], (unsigned char)p[1])
790
791#ifdef XML_MIN_SIZE
792
793static int PTRFASTCALL
794big2_byteType(const ENCODING *enc, const char *p)
795{
796 return BIG2_BYTE_TYPE(enc, p);
797}
798
799static int PTRFASTCALL
800big2_byteToAscii(const ENCODING *enc, const char *p)
801{
802 return BIG2_BYTE_TO_ASCII(enc, p);
803}
804
805static int PTRCALL
806big2_charMatches(const ENCODING *enc, const char *p, int c)
807{
808 return BIG2_CHAR_MATCHES(enc, p, c);
809}
810
811static int PTRFASTCALL
812big2_isNameMin(const ENCODING *enc, const char *p)
813{
814 return BIG2_IS_NAME_CHAR_MINBPC(enc, p);
815}
816
817static int PTRFASTCALL
818big2_isNmstrtMin(const ENCODING *enc, const char *p)
819{
820 return BIG2_IS_NMSTRT_CHAR_MINBPC(enc, p);
821}
822
823#undef VTABLE
824#define VTABLE VTABLE1, big2_toUtf8, big2_toUtf16
825
826#else /* not XML_MIN_SIZE */
827
828#undef PREFIX
829#define PREFIX(ident) big2_ ## ident
830#define MINBPC(enc) 2
831/* CHAR_MATCHES is guaranteed to have MINBPC bytes available. */
832#define BYTE_TYPE(enc, p) BIG2_BYTE_TYPE(enc, p)
833#define BYTE_TO_ASCII(enc, p) BIG2_BYTE_TO_ASCII(enc, p)
834#define CHAR_MATCHES(enc, p, c) BIG2_CHAR_MATCHES(enc, p, c)
835#define IS_NAME_CHAR(enc, p, n) 0
836#define IS_NAME_CHAR_MINBPC(enc, p) BIG2_IS_NAME_CHAR_MINBPC(enc, p)
837#define IS_NMSTRT_CHAR(enc, p, n) (0)
838#define IS_NMSTRT_CHAR_MINBPC(enc, p) BIG2_IS_NMSTRT_CHAR_MINBPC(enc, p)
839
[391]840#define XML_TOK_IMPL_C
[2]841#include "xmltok_impl.c"
[391]842#undef XML_TOK_IMPL_C
[2]843
844#undef MINBPC
845#undef BYTE_TYPE
846#undef BYTE_TO_ASCII
847#undef CHAR_MATCHES
848#undef IS_NAME_CHAR
849#undef IS_NAME_CHAR_MINBPC
850#undef IS_NMSTRT_CHAR
851#undef IS_NMSTRT_CHAR_MINBPC
852#undef IS_INVALID_CHAR
853
854#endif /* not XML_MIN_SIZE */
855
856#ifdef XML_NS
857
858static const struct normal_encoding big2_encoding_ns = {
859 { VTABLE, 2, 0,
860#if BYTEORDER == 4321
861 1
862#else
863 0
864#endif
865 },
866 {
867#include "asciitab.h"
868#include "latin1tab.h"
869 },
870 STANDARD_VTABLE(big2_)
871};
872
873#endif
874
875static const struct normal_encoding big2_encoding = {
876 { VTABLE, 2, 0,
877#if BYTEORDER == 4321
878 1
879#else
880 0
881#endif
882 },
883 {
884#define BT_COLON BT_NMSTRT
885#include "asciitab.h"
886#undef BT_COLON
887#include "latin1tab.h"
888 },
889 STANDARD_VTABLE(big2_)
890};
891
892#if BYTEORDER != 1234
893
894#ifdef XML_NS
895
896static const struct normal_encoding internal_big2_encoding_ns = {
897 { VTABLE, 2, 0, 1 },
898 {
899#include "iasciitab.h"
900#include "latin1tab.h"
901 },
902 STANDARD_VTABLE(big2_)
903};
904
905#endif
906
907static const struct normal_encoding internal_big2_encoding = {
908 { VTABLE, 2, 0, 1 },
909 {
910#define BT_COLON BT_NMSTRT
911#include "iasciitab.h"
912#undef BT_COLON
913#include "latin1tab.h"
914 },
915 STANDARD_VTABLE(big2_)
916};
917
918#endif
919
920#undef PREFIX
921
922static int FASTCALL
923streqci(const char *s1, const char *s2)
924{
925 for (;;) {
926 char c1 = *s1++;
927 char c2 = *s2++;
928 if (ASCII_a <= c1 && c1 <= ASCII_z)
929 c1 += ASCII_A - ASCII_a;
930 if (ASCII_a <= c2 && c2 <= ASCII_z)
931 c2 += ASCII_A - ASCII_a;
932 if (c1 != c2)
933 return 0;
934 if (!c1)
935 break;
936 }
937 return 1;
938}
939
940static void PTRCALL
941initUpdatePosition(const ENCODING *enc, const char *ptr,
942 const char *end, POSITION *pos)
943{
944 normal_updatePosition(&utf8_encoding.enc, ptr, end, pos);
945}
946
947static int
948toAscii(const ENCODING *enc, const char *ptr, const char *end)
949{
950 char buf[1];
951 char *p = buf;
952 XmlUtf8Convert(enc, &ptr, end, &p, p + 1);
953 if (p == buf)
954 return -1;
955 else
956 return buf[0];
957}
958
959static int FASTCALL
960isSpace(int c)
961{
962 switch (c) {
963 case 0x20:
964 case 0xD:
965 case 0xA:
966 case 0x9:
967 return 1;
968 }
969 return 0;
970}
971
972/* Return 1 if there's just optional white space or there's an S
973 followed by name=val.
974*/
975static int
976parsePseudoAttribute(const ENCODING *enc,
977 const char *ptr,
978 const char *end,
979 const char **namePtr,
980 const char **nameEndPtr,
981 const char **valPtr,
982 const char **nextTokPtr)
983{
984 int c;
985 char open;
986 if (ptr == end) {
987 *namePtr = NULL;
988 return 1;
989 }
990 if (!isSpace(toAscii(enc, ptr, end))) {
991 *nextTokPtr = ptr;
992 return 0;
993 }
994 do {
995 ptr += enc->minBytesPerChar;
996 } while (isSpace(toAscii(enc, ptr, end)));
997 if (ptr == end) {
998 *namePtr = NULL;
999 return 1;
1000 }
1001 *namePtr = ptr;
1002 for (;;) {
1003 c = toAscii(enc, ptr, end);
1004 if (c == -1) {
1005 *nextTokPtr = ptr;
1006 return 0;
1007 }
1008 if (c == ASCII_EQUALS) {
1009 *nameEndPtr = ptr;
1010 break;
1011 }
1012 if (isSpace(c)) {
1013 *nameEndPtr = ptr;
1014 do {
1015 ptr += enc->minBytesPerChar;
1016 } while (isSpace(c = toAscii(enc, ptr, end)));
1017 if (c != ASCII_EQUALS) {
1018 *nextTokPtr = ptr;
1019 return 0;
1020 }
1021 break;
1022 }
1023 ptr += enc->minBytesPerChar;
1024 }
1025 if (ptr == *namePtr) {
1026 *nextTokPtr = ptr;
1027 return 0;
1028 }
1029 ptr += enc->minBytesPerChar;
1030 c = toAscii(enc, ptr, end);
1031 while (isSpace(c)) {
1032 ptr += enc->minBytesPerChar;
1033 c = toAscii(enc, ptr, end);
1034 }
1035 if (c != ASCII_QUOT && c != ASCII_APOS) {
1036 *nextTokPtr = ptr;
1037 return 0;
1038 }
1039 open = (char)c;
1040 ptr += enc->minBytesPerChar;
1041 *valPtr = ptr;
1042 for (;; ptr += enc->minBytesPerChar) {
1043 c = toAscii(enc, ptr, end);
1044 if (c == open)
1045 break;
1046 if (!(ASCII_a <= c && c <= ASCII_z)
1047 && !(ASCII_A <= c && c <= ASCII_Z)
1048 && !(ASCII_0 <= c && c <= ASCII_9)
1049 && c != ASCII_PERIOD
1050 && c != ASCII_MINUS
1051 && c != ASCII_UNDERSCORE) {
1052 *nextTokPtr = ptr;
1053 return 0;
1054 }
1055 }
1056 *nextTokPtr = ptr + enc->minBytesPerChar;
1057 return 1;
1058}
1059
1060static const char KW_version[] = {
1061 ASCII_v, ASCII_e, ASCII_r, ASCII_s, ASCII_i, ASCII_o, ASCII_n, '\0'
1062};
1063
1064static const char KW_encoding[] = {
1065 ASCII_e, ASCII_n, ASCII_c, ASCII_o, ASCII_d, ASCII_i, ASCII_n, ASCII_g, '\0'
1066};
1067
1068static const char KW_standalone[] = {
1069 ASCII_s, ASCII_t, ASCII_a, ASCII_n, ASCII_d, ASCII_a, ASCII_l, ASCII_o,
1070 ASCII_n, ASCII_e, '\0'
1071};
1072
1073static const char KW_yes[] = {
1074 ASCII_y, ASCII_e, ASCII_s, '\0'
1075};
1076
1077static const char KW_no[] = {
1078 ASCII_n, ASCII_o, '\0'
1079};
1080
1081static int
1082doParseXmlDecl(const ENCODING *(*encodingFinder)(const ENCODING *,
1083 const char *,
1084 const char *),
1085 int isGeneralTextEntity,
1086 const ENCODING *enc,
1087 const char *ptr,
1088 const char *end,
1089 const char **badPtr,
1090 const char **versionPtr,
1091 const char **versionEndPtr,
1092 const char **encodingName,
1093 const ENCODING **encoding,
1094 int *standalone)
1095{
1096 const char *val = NULL;
1097 const char *name = NULL;
1098 const char *nameEnd = NULL;
1099 ptr += 5 * enc->minBytesPerChar;
1100 end -= 2 * enc->minBytesPerChar;
1101 if (!parsePseudoAttribute(enc, ptr, end, &name, &nameEnd, &val, &ptr)
1102 || !name) {
1103 *badPtr = ptr;
1104 return 0;
1105 }
1106 if (!XmlNameMatchesAscii(enc, name, nameEnd, KW_version)) {
1107 if (!isGeneralTextEntity) {
1108 *badPtr = name;
1109 return 0;
1110 }
1111 }
1112 else {
1113 if (versionPtr)
1114 *versionPtr = val;
1115 if (versionEndPtr)
1116 *versionEndPtr = ptr;
1117 if (!parsePseudoAttribute(enc, ptr, end, &name, &nameEnd, &val, &ptr)) {
1118 *badPtr = ptr;
1119 return 0;
1120 }
1121 if (!name) {
1122 if (isGeneralTextEntity) {
1123 /* a TextDecl must have an EncodingDecl */
1124 *badPtr = ptr;
1125 return 0;
1126 }
1127 return 1;
1128 }
1129 }
1130 if (XmlNameMatchesAscii(enc, name, nameEnd, KW_encoding)) {
1131 int c = toAscii(enc, val, end);
1132 if (!(ASCII_a <= c && c <= ASCII_z) && !(ASCII_A <= c && c <= ASCII_Z)) {
1133 *badPtr = val;
1134 return 0;
1135 }
1136 if (encodingName)
1137 *encodingName = val;
1138 if (encoding)
1139 *encoding = encodingFinder(enc, val, ptr - enc->minBytesPerChar);
1140 if (!parsePseudoAttribute(enc, ptr, end, &name, &nameEnd, &val, &ptr)) {
1141 *badPtr = ptr;
1142 return 0;
1143 }
1144 if (!name)
1145 return 1;
1146 }
1147 if (!XmlNameMatchesAscii(enc, name, nameEnd, KW_standalone)
1148 || isGeneralTextEntity) {
1149 *badPtr = name;
1150 return 0;
1151 }
1152 if (XmlNameMatchesAscii(enc, val, ptr - enc->minBytesPerChar, KW_yes)) {
1153 if (standalone)
1154 *standalone = 1;
1155 }
1156 else if (XmlNameMatchesAscii(enc, val, ptr - enc->minBytesPerChar, KW_no)) {
1157 if (standalone)
1158 *standalone = 0;
1159 }
1160 else {
1161 *badPtr = val;
1162 return 0;
1163 }
1164 while (isSpace(toAscii(enc, ptr, end)))
1165 ptr += enc->minBytesPerChar;
1166 if (ptr != end) {
1167 *badPtr = ptr;
1168 return 0;
1169 }
1170 return 1;
1171}
1172
1173static int FASTCALL
1174checkCharRefNumber(int result)
1175{
1176 switch (result >> 8) {
1177 case 0xD8: case 0xD9: case 0xDA: case 0xDB:
1178 case 0xDC: case 0xDD: case 0xDE: case 0xDF:
1179 return -1;
1180 case 0:
1181 if (latin1_encoding.type[result] == BT_NONXML)
1182 return -1;
1183 break;
1184 case 0xFF:
1185 if (result == 0xFFFE || result == 0xFFFF)
1186 return -1;
1187 break;
1188 }
1189 return result;
1190}
1191
1192int FASTCALL
1193XmlUtf8Encode(int c, char *buf)
1194{
1195 enum {
1196 /* minN is minimum legal resulting value for N byte sequence */
1197 min2 = 0x80,
1198 min3 = 0x800,
1199 min4 = 0x10000
1200 };
1201
1202 if (c < 0)
1203 return 0;
1204 if (c < min2) {
1205 buf[0] = (char)(c | UTF8_cval1);
1206 return 1;
1207 }
1208 if (c < min3) {
1209 buf[0] = (char)((c >> 6) | UTF8_cval2);
1210 buf[1] = (char)((c & 0x3f) | 0x80);
1211 return 2;
1212 }
1213 if (c < min4) {
1214 buf[0] = (char)((c >> 12) | UTF8_cval3);
1215 buf[1] = (char)(((c >> 6) & 0x3f) | 0x80);
1216 buf[2] = (char)((c & 0x3f) | 0x80);
1217 return 3;
1218 }
1219 if (c < 0x110000) {
1220 buf[0] = (char)((c >> 18) | UTF8_cval4);
1221 buf[1] = (char)(((c >> 12) & 0x3f) | 0x80);
1222 buf[2] = (char)(((c >> 6) & 0x3f) | 0x80);
1223 buf[3] = (char)((c & 0x3f) | 0x80);
1224 return 4;
1225 }
1226 return 0;
1227}
1228
1229int FASTCALL
1230XmlUtf16Encode(int charNum, unsigned short *buf)
1231{
1232 if (charNum < 0)
1233 return 0;
1234 if (charNum < 0x10000) {
1235 buf[0] = (unsigned short)charNum;
1236 return 1;
1237 }
1238 if (charNum < 0x110000) {
1239 charNum -= 0x10000;
1240 buf[0] = (unsigned short)((charNum >> 10) + 0xD800);
1241 buf[1] = (unsigned short)((charNum & 0x3FF) + 0xDC00);
1242 return 2;
1243 }
1244 return 0;
1245}
1246
1247struct unknown_encoding {
1248 struct normal_encoding normal;
1249 CONVERTER convert;
1250 void *userData;
1251 unsigned short utf16[256];
1252 char utf8[256][4];
1253};
1254
1255#define AS_UNKNOWN_ENCODING(enc) ((const struct unknown_encoding *) (enc))
1256
1257int
1258XmlSizeOfUnknownEncoding(void)
1259{
1260 return sizeof(struct unknown_encoding);
1261}
1262
1263static int PTRFASTCALL
1264unknown_isName(const ENCODING *enc, const char *p)
1265{
1266 const struct unknown_encoding *uenc = AS_UNKNOWN_ENCODING(enc);
1267 int c = uenc->convert(uenc->userData, p);
1268 if (c & ~0xFFFF)
1269 return 0;
1270 return UCS2_GET_NAMING(namePages, c >> 8, c & 0xFF);
1271}
1272
1273static int PTRFASTCALL
1274unknown_isNmstrt(const ENCODING *enc, const char *p)
1275{
1276 const struct unknown_encoding *uenc = AS_UNKNOWN_ENCODING(enc);
1277 int c = uenc->convert(uenc->userData, p);
1278 if (c & ~0xFFFF)
1279 return 0;
1280 return UCS2_GET_NAMING(nmstrtPages, c >> 8, c & 0xFF);
1281}
1282
1283static int PTRFASTCALL
1284unknown_isInvalid(const ENCODING *enc, const char *p)
1285{
1286 const struct unknown_encoding *uenc = AS_UNKNOWN_ENCODING(enc);
1287 int c = uenc->convert(uenc->userData, p);
1288 return (c & ~0xFFFF) || checkCharRefNumber(c) < 0;
1289}
1290
1291static void PTRCALL
1292unknown_toUtf8(const ENCODING *enc,
1293 const char **fromP, const char *fromLim,
1294 char **toP, const char *toLim)
1295{
1296 const struct unknown_encoding *uenc = AS_UNKNOWN_ENCODING(enc);
1297 char buf[XML_UTF8_ENCODE_MAX];
1298 for (;;) {
1299 const char *utf8;
1300 int n;
1301 if (*fromP == fromLim)
1302 break;
1303 utf8 = uenc->utf8[(unsigned char)**fromP];
1304 n = *utf8++;
1305 if (n == 0) {
1306 int c = uenc->convert(uenc->userData, *fromP);
1307 n = XmlUtf8Encode(c, buf);
1308 if (n > toLim - *toP)
1309 break;
1310 utf8 = buf;
1311 *fromP += (AS_NORMAL_ENCODING(enc)->type[(unsigned char)**fromP]
1312 - (BT_LEAD2 - 2));
1313 }
1314 else {
1315 if (n > toLim - *toP)
1316 break;
1317 (*fromP)++;
1318 }
1319 do {
1320 *(*toP)++ = *utf8++;
1321 } while (--n != 0);
1322 }
1323}
1324
1325static void PTRCALL
1326unknown_toUtf16(const ENCODING *enc,
1327 const char **fromP, const char *fromLim,
1328 unsigned short **toP, const unsigned short *toLim)
1329{
1330 const struct unknown_encoding *uenc = AS_UNKNOWN_ENCODING(enc);
1331 while (*fromP != fromLim && *toP != toLim) {
1332 unsigned short c = uenc->utf16[(unsigned char)**fromP];
1333 if (c == 0) {
1334 c = (unsigned short)
1335 uenc->convert(uenc->userData, *fromP);
1336 *fromP += (AS_NORMAL_ENCODING(enc)->type[(unsigned char)**fromP]
1337 - (BT_LEAD2 - 2));
1338 }
1339 else
1340 (*fromP)++;
1341 *(*toP)++ = c;
1342 }
1343}
1344
1345ENCODING *
1346XmlInitUnknownEncoding(void *mem,
1347 int *table,
[391]1348 CONVERTER convert,
[2]1349 void *userData)
1350{
1351 int i;
1352 struct unknown_encoding *e = (struct unknown_encoding *)mem;
1353 for (i = 0; i < (int)sizeof(struct normal_encoding); i++)
1354 ((char *)mem)[i] = ((char *)&latin1_encoding)[i];
1355 for (i = 0; i < 128; i++)
1356 if (latin1_encoding.type[i] != BT_OTHER
1357 && latin1_encoding.type[i] != BT_NONXML
1358 && table[i] != i)
1359 return 0;
1360 for (i = 0; i < 256; i++) {
1361 int c = table[i];
1362 if (c == -1) {
1363 e->normal.type[i] = BT_MALFORM;
1364 /* This shouldn't really get used. */
1365 e->utf16[i] = 0xFFFF;
1366 e->utf8[i][0] = 1;
1367 e->utf8[i][1] = 0;
1368 }
1369 else if (c < 0) {
1370 if (c < -4)
1371 return 0;
1372 e->normal.type[i] = (unsigned char)(BT_LEAD2 - (c + 2));
1373 e->utf8[i][0] = 0;
1374 e->utf16[i] = 0;
1375 }
1376 else if (c < 0x80) {
1377 if (latin1_encoding.type[c] != BT_OTHER
1378 && latin1_encoding.type[c] != BT_NONXML
1379 && c != i)
1380 return 0;
1381 e->normal.type[i] = latin1_encoding.type[c];
1382 e->utf8[i][0] = 1;
1383 e->utf8[i][1] = (char)c;
1384 e->utf16[i] = (unsigned short)(c == 0 ? 0xFFFF : c);
1385 }
1386 else if (checkCharRefNumber(c) < 0) {
1387 e->normal.type[i] = BT_NONXML;
1388 /* This shouldn't really get used. */
1389 e->utf16[i] = 0xFFFF;
1390 e->utf8[i][0] = 1;
1391 e->utf8[i][1] = 0;
1392 }
1393 else {
1394 if (c > 0xFFFF)
1395 return 0;
1396 if (UCS2_GET_NAMING(nmstrtPages, c >> 8, c & 0xff))
1397 e->normal.type[i] = BT_NMSTRT;
1398 else if (UCS2_GET_NAMING(namePages, c >> 8, c & 0xff))
1399 e->normal.type[i] = BT_NAME;
1400 else
1401 e->normal.type[i] = BT_OTHER;
1402 e->utf8[i][0] = (char)XmlUtf8Encode(c, e->utf8[i] + 1);
1403 e->utf16[i] = (unsigned short)c;
1404 }
1405 }
1406 e->userData = userData;
1407 e->convert = convert;
1408 if (convert) {
1409 e->normal.isName2 = unknown_isName;
1410 e->normal.isName3 = unknown_isName;
1411 e->normal.isName4 = unknown_isName;
1412 e->normal.isNmstrt2 = unknown_isNmstrt;
1413 e->normal.isNmstrt3 = unknown_isNmstrt;
1414 e->normal.isNmstrt4 = unknown_isNmstrt;
1415 e->normal.isInvalid2 = unknown_isInvalid;
1416 e->normal.isInvalid3 = unknown_isInvalid;
1417 e->normal.isInvalid4 = unknown_isInvalid;
1418 }
1419 e->normal.enc.utf8Convert = unknown_toUtf8;
1420 e->normal.enc.utf16Convert = unknown_toUtf16;
1421 return &(e->normal.enc);
1422}
1423
1424/* If this enumeration is changed, getEncodingIndex and encodings
1425must also be changed. */
1426enum {
1427 UNKNOWN_ENC = -1,
1428 ISO_8859_1_ENC = 0,
1429 US_ASCII_ENC,
1430 UTF_8_ENC,
1431 UTF_16_ENC,
1432 UTF_16BE_ENC,
1433 UTF_16LE_ENC,
1434 /* must match encodingNames up to here */
1435 NO_ENC
1436};
1437
1438static const char KW_ISO_8859_1[] = {
1439 ASCII_I, ASCII_S, ASCII_O, ASCII_MINUS, ASCII_8, ASCII_8, ASCII_5, ASCII_9,
1440 ASCII_MINUS, ASCII_1, '\0'
1441};
1442static const char KW_US_ASCII[] = {
1443 ASCII_U, ASCII_S, ASCII_MINUS, ASCII_A, ASCII_S, ASCII_C, ASCII_I, ASCII_I,
1444 '\0'
1445};
1446static const char KW_UTF_8[] = {
1447 ASCII_U, ASCII_T, ASCII_F, ASCII_MINUS, ASCII_8, '\0'
1448};
1449static const char KW_UTF_16[] = {
1450 ASCII_U, ASCII_T, ASCII_F, ASCII_MINUS, ASCII_1, ASCII_6, '\0'
1451};
1452static const char KW_UTF_16BE[] = {
1453 ASCII_U, ASCII_T, ASCII_F, ASCII_MINUS, ASCII_1, ASCII_6, ASCII_B, ASCII_E,
1454 '\0'
1455};
1456static const char KW_UTF_16LE[] = {
1457 ASCII_U, ASCII_T, ASCII_F, ASCII_MINUS, ASCII_1, ASCII_6, ASCII_L, ASCII_E,
1458 '\0'
1459};
1460
1461static int FASTCALL
1462getEncodingIndex(const char *name)
1463{
1464 static const char * const encodingNames[] = {
1465 KW_ISO_8859_1,
1466 KW_US_ASCII,
1467 KW_UTF_8,
1468 KW_UTF_16,
1469 KW_UTF_16BE,
1470 KW_UTF_16LE,
1471 };
1472 int i;
1473 if (name == NULL)
1474 return NO_ENC;
1475 for (i = 0; i < (int)(sizeof(encodingNames)/sizeof(encodingNames[0])); i++)
1476 if (streqci(name, encodingNames[i]))
1477 return i;
1478 return UNKNOWN_ENC;
1479}
1480
1481/* For binary compatibility, we store the index of the encoding
1482 specified at initialization in the isUtf16 member.
1483*/
1484
1485#define INIT_ENC_INDEX(enc) ((int)(enc)->initEnc.isUtf16)
1486#define SET_INIT_ENC_INDEX(enc, i) ((enc)->initEnc.isUtf16 = (char)i)
1487
1488/* This is what detects the encoding. encodingTable maps from
1489 encoding indices to encodings; INIT_ENC_INDEX(enc) is the index of
1490 the external (protocol) specified encoding; state is
1491 XML_CONTENT_STATE if we're parsing an external text entity, and
1492 XML_PROLOG_STATE otherwise.
1493*/
1494
1495
1496static int
1497initScan(const ENCODING * const *encodingTable,
1498 const INIT_ENCODING *enc,
1499 int state,
1500 const char *ptr,
1501 const char *end,
1502 const char **nextTokPtr)
1503{
1504 const ENCODING **encPtr;
1505
1506 if (ptr == end)
1507 return XML_TOK_NONE;
1508 encPtr = enc->encPtr;
1509 if (ptr + 1 == end) {
1510 /* only a single byte available for auto-detection */
1511#ifndef XML_DTD /* FIXME */
1512 /* a well-formed document entity must have more than one byte */
1513 if (state != XML_CONTENT_STATE)
1514 return XML_TOK_PARTIAL;
1515#endif
1516 /* so we're parsing an external text entity... */
1517 /* if UTF-16 was externally specified, then we need at least 2 bytes */
1518 switch (INIT_ENC_INDEX(enc)) {
1519 case UTF_16_ENC:
1520 case UTF_16LE_ENC:
1521 case UTF_16BE_ENC:
1522 return XML_TOK_PARTIAL;
1523 }
1524 switch ((unsigned char)*ptr) {
1525 case 0xFE:
1526 case 0xFF:
1527 case 0xEF: /* possibly first byte of UTF-8 BOM */
1528 if (INIT_ENC_INDEX(enc) == ISO_8859_1_ENC
1529 && state == XML_CONTENT_STATE)
1530 break;
1531 /* fall through */
1532 case 0x00:
1533 case 0x3C:
1534 return XML_TOK_PARTIAL;
1535 }
1536 }
1537 else {
1538 switch (((unsigned char)ptr[0] << 8) | (unsigned char)ptr[1]) {
1539 case 0xFEFF:
1540 if (INIT_ENC_INDEX(enc) == ISO_8859_1_ENC
1541 && state == XML_CONTENT_STATE)
1542 break;
1543 *nextTokPtr = ptr + 2;
1544 *encPtr = encodingTable[UTF_16BE_ENC];
1545 return XML_TOK_BOM;
1546 /* 00 3C is handled in the default case */
1547 case 0x3C00:
1548 if ((INIT_ENC_INDEX(enc) == UTF_16BE_ENC
1549 || INIT_ENC_INDEX(enc) == UTF_16_ENC)
1550 && state == XML_CONTENT_STATE)
1551 break;
1552 *encPtr = encodingTable[UTF_16LE_ENC];
1553 return XmlTok(*encPtr, state, ptr, end, nextTokPtr);
1554 case 0xFFFE:
1555 if (INIT_ENC_INDEX(enc) == ISO_8859_1_ENC
1556 && state == XML_CONTENT_STATE)
1557 break;
1558 *nextTokPtr = ptr + 2;
1559 *encPtr = encodingTable[UTF_16LE_ENC];
1560 return XML_TOK_BOM;
1561 case 0xEFBB:
1562 /* Maybe a UTF-8 BOM (EF BB BF) */
1563 /* If there's an explicitly specified (external) encoding
1564 of ISO-8859-1 or some flavour of UTF-16
1565 and this is an external text entity,
1566 don't look for the BOM,
1567 because it might be a legal data.
1568 */
1569 if (state == XML_CONTENT_STATE) {
1570 int e = INIT_ENC_INDEX(enc);
1571 if (e == ISO_8859_1_ENC || e == UTF_16BE_ENC
1572 || e == UTF_16LE_ENC || e == UTF_16_ENC)
1573 break;
1574 }
1575 if (ptr + 2 == end)
1576 return XML_TOK_PARTIAL;
1577 if ((unsigned char)ptr[2] == 0xBF) {
1578 *nextTokPtr = ptr + 3;
1579 *encPtr = encodingTable[UTF_8_ENC];
1580 return XML_TOK_BOM;
1581 }
1582 break;
1583 default:
1584 if (ptr[0] == '\0') {
1585 /* 0 isn't a legal data character. Furthermore a document
1586 entity can only start with ASCII characters. So the only
[391]1587 way this can fail to be big-endian UTF-16 is if it is an
[2]1588 external parsed general entity that's labelled as
1589 UTF-16LE.
1590 */
1591 if (state == XML_CONTENT_STATE && INIT_ENC_INDEX(enc) == UTF_16LE_ENC)
1592 break;
1593 *encPtr = encodingTable[UTF_16BE_ENC];
1594 return XmlTok(*encPtr, state, ptr, end, nextTokPtr);
1595 }
1596 else if (ptr[1] == '\0') {
1597 /* We could recover here in the case:
1598 - parsing an external entity
1599 - second byte is 0
1600 - no externally specified encoding
1601 - no encoding declaration
1602 by assuming UTF-16LE. But we don't, because this would mean when
1603 presented just with a single byte, we couldn't reliably determine
1604 whether we needed further bytes.
1605 */
1606 if (state == XML_CONTENT_STATE)
1607 break;
1608 *encPtr = encodingTable[UTF_16LE_ENC];
1609 return XmlTok(*encPtr, state, ptr, end, nextTokPtr);
1610 }
1611 break;
1612 }
1613 }
1614 *encPtr = encodingTable[INIT_ENC_INDEX(enc)];
1615 return XmlTok(*encPtr, state, ptr, end, nextTokPtr);
1616}
1617
1618
1619#define NS(x) x
1620#define ns(x) x
[391]1621#define XML_TOK_NS_C
[2]1622#include "xmltok_ns.c"
[391]1623#undef XML_TOK_NS_C
[2]1624#undef NS
1625#undef ns
1626
1627#ifdef XML_NS
1628
1629#define NS(x) x ## NS
1630#define ns(x) x ## _ns
1631
[391]1632#define XML_TOK_NS_C
[2]1633#include "xmltok_ns.c"
[391]1634#undef XML_TOK_NS_C
[2]1635
1636#undef NS
1637#undef ns
1638
1639ENCODING *
1640XmlInitUnknownEncodingNS(void *mem,
1641 int *table,
[391]1642 CONVERTER convert,
[2]1643 void *userData)
1644{
1645 ENCODING *enc = XmlInitUnknownEncoding(mem, table, convert, userData);
1646 if (enc)
1647 ((struct normal_encoding *)enc)->type[ASCII_COLON] = BT_COLON;
1648 return enc;
1649}
1650
1651#endif /* XML_NS */
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