| 1 | /* Copyright (c) 1998, 1999 Thai Open Source Software Center Ltd |
| 2 | See the file COPYING for copying permission. |
| 3 | */ |
| 4 | |
| 5 | #ifdef COMPILED_FROM_DSP |
| 6 | #include "winconfig.h" |
| 7 | #elif defined(MACOS_CLASSIC) |
| 8 | #include "macconfig.h" |
| 9 | #else |
| 10 | #include "expat_config.h" |
| 11 | #endif /* ndef COMPILED_FROM_DSP */ |
| 12 | |
| 13 | #include "internal.h" |
| 14 | #include "xmltok.h" |
| 15 | #include "nametab.h" |
| 16 | |
| 17 | #ifdef XML_DTD |
| 18 | #define IGNORE_SECTION_TOK_VTABLE , PREFIX(ignoreSectionTok) |
| 19 | #else |
| 20 | #define IGNORE_SECTION_TOK_VTABLE /* as nothing */ |
| 21 | #endif |
| 22 | |
| 23 | #define VTABLE1 \ |
| 24 | { PREFIX(prologTok), PREFIX(contentTok), \ |
| 25 | PREFIX(cdataSectionTok) IGNORE_SECTION_TOK_VTABLE }, \ |
| 26 | { PREFIX(attributeValueTok), PREFIX(entityValueTok) }, \ |
| 27 | PREFIX(sameName), \ |
| 28 | PREFIX(nameMatchesAscii), \ |
| 29 | PREFIX(nameLength), \ |
| 30 | PREFIX(skipS), \ |
| 31 | PREFIX(getAtts), \ |
| 32 | PREFIX(charRefNumber), \ |
| 33 | PREFIX(predefinedEntityName), \ |
| 34 | PREFIX(updatePosition), \ |
| 35 | PREFIX(isPublicId) |
| 36 | |
| 37 | #define VTABLE VTABLE1, PREFIX(toUtf8), PREFIX(toUtf16) |
| 38 | |
| 39 | #define UCS2_GET_NAMING(pages, hi, lo) \ |
| 40 | (namingBitmap[(pages[hi] << 3) + ((lo) >> 5)] & (1 << ((lo) & 0x1F))) |
| 41 | |
| 42 | /* A 2 byte UTF-8 representation splits the characters 11 bits between |
| 43 | the bottom 5 and 6 bits of the bytes. We need 8 bits to index into |
| 44 | pages, 3 bits to add to that index and 5 bits to generate the mask. |
| 45 | */ |
| 46 | #define UTF8_GET_NAMING2(pages, byte) \ |
| 47 | (namingBitmap[((pages)[(((byte)[0]) >> 2) & 7] << 3) \ |
| 48 | + ((((byte)[0]) & 3) << 1) \ |
| 49 | + ((((byte)[1]) >> 5) & 1)] \ |
| 50 | & (1 << (((byte)[1]) & 0x1F))) |
| 51 | |
| 52 | /* A 3 byte UTF-8 representation splits the characters 16 bits between |
| 53 | the bottom 4, 6 and 6 bits of the bytes. We need 8 bits to index |
| 54 | into pages, 3 bits to add to that index and 5 bits to generate the |
| 55 | mask. |
| 56 | */ |
| 57 | #define UTF8_GET_NAMING3(pages, byte) \ |
| 58 | (namingBitmap[((pages)[((((byte)[0]) & 0xF) << 4) \ |
| 59 | + ((((byte)[1]) >> 2) & 0xF)] \ |
| 60 | << 3) \ |
| 61 | + ((((byte)[1]) & 3) << 1) \ |
| 62 | + ((((byte)[2]) >> 5) & 1)] \ |
| 63 | & (1 << (((byte)[2]) & 0x1F))) |
| 64 | |
| 65 | #define UTF8_GET_NAMING(pages, p, n) \ |
| 66 | ((n) == 2 \ |
| 67 | ? UTF8_GET_NAMING2(pages, (const unsigned char *)(p)) \ |
| 68 | : ((n) == 3 \ |
| 69 | ? UTF8_GET_NAMING3(pages, (const unsigned char *)(p)) \ |
| 70 | : 0)) |
| 71 | |
| 72 | /* Detection of invalid UTF-8 sequences is based on Table 3.1B |
| 73 | of Unicode 3.2: http://www.unicode.org/unicode/reports/tr28/ |
| 74 | with the additional restriction of not allowing the Unicode |
| 75 | code points 0xFFFF and 0xFFFE (sequences EF,BF,BF and EF,BF,BE). |
| 76 | Implementation details: |
| 77 | (A & 0x80) == 0 means A < 0x80 |
| 78 | and |
| 79 | (A & 0xC0) == 0xC0 means A > 0xBF |
| 80 | */ |
| 81 | |
| 82 | #define UTF8_INVALID2(p) \ |
| 83 | ((*p) < 0xC2 || ((p)[1] & 0x80) == 0 || ((p)[1] & 0xC0) == 0xC0) |
| 84 | |
| 85 | #define UTF8_INVALID3(p) \ |
| 86 | (((p)[2] & 0x80) == 0 \ |
| 87 | || \ |
| 88 | ((*p) == 0xEF && (p)[1] == 0xBF \ |
| 89 | ? \ |
| 90 | (p)[2] > 0xBD \ |
| 91 | : \ |
| 92 | ((p)[2] & 0xC0) == 0xC0) \ |
| 93 | || \ |
| 94 | ((*p) == 0xE0 \ |
| 95 | ? \ |
| 96 | (p)[1] < 0xA0 || ((p)[1] & 0xC0) == 0xC0 \ |
| 97 | : \ |
| 98 | ((p)[1] & 0x80) == 0 \ |
| 99 | || \ |
| 100 | ((*p) == 0xED ? (p)[1] > 0x9F : ((p)[1] & 0xC0) == 0xC0))) |
| 101 | |
| 102 | #define UTF8_INVALID4(p) \ |
| 103 | (((p)[3] & 0x80) == 0 || ((p)[3] & 0xC0) == 0xC0 \ |
| 104 | || \ |
| 105 | ((p)[2] & 0x80) == 0 || ((p)[2] & 0xC0) == 0xC0 \ |
| 106 | || \ |
| 107 | ((*p) == 0xF0 \ |
| 108 | ? \ |
| 109 | (p)[1] < 0x90 || ((p)[1] & 0xC0) == 0xC0 \ |
| 110 | : \ |
| 111 | ((p)[1] & 0x80) == 0 \ |
| 112 | || \ |
| 113 | ((*p) == 0xF4 ? (p)[1] > 0x8F : ((p)[1] & 0xC0) == 0xC0))) |
| 114 | |
| 115 | static int PTRFASTCALL |
| 116 | isNever(const ENCODING *enc, const char *p) |
| 117 | { |
| 118 | return 0; |
| 119 | } |
| 120 | |
| 121 | static int PTRFASTCALL |
| 122 | utf8_isName2(const ENCODING *enc, const char *p) |
| 123 | { |
| 124 | return UTF8_GET_NAMING2(namePages, (const unsigned char *)p); |
| 125 | } |
| 126 | |
| 127 | static int PTRFASTCALL |
| 128 | utf8_isName3(const ENCODING *enc, const char *p) |
| 129 | { |
| 130 | return UTF8_GET_NAMING3(namePages, (const unsigned char *)p); |
| 131 | } |
| 132 | |
| 133 | #define utf8_isName4 isNever |
| 134 | |
| 135 | static int PTRFASTCALL |
| 136 | utf8_isNmstrt2(const ENCODING *enc, const char *p) |
| 137 | { |
| 138 | return UTF8_GET_NAMING2(nmstrtPages, (const unsigned char *)p); |
| 139 | } |
| 140 | |
| 141 | static int PTRFASTCALL |
| 142 | utf8_isNmstrt3(const ENCODING *enc, const char *p) |
| 143 | { |
| 144 | return UTF8_GET_NAMING3(nmstrtPages, (const unsigned char *)p); |
| 145 | } |
| 146 | |
| 147 | #define utf8_isNmstrt4 isNever |
| 148 | |
| 149 | static int PTRFASTCALL |
| 150 | utf8_isInvalid2(const ENCODING *enc, const char *p) |
| 151 | { |
| 152 | return UTF8_INVALID2((const unsigned char *)p); |
| 153 | } |
| 154 | |
| 155 | static int PTRFASTCALL |
| 156 | utf8_isInvalid3(const ENCODING *enc, const char *p) |
| 157 | { |
| 158 | return UTF8_INVALID3((const unsigned char *)p); |
| 159 | } |
| 160 | |
| 161 | static int PTRFASTCALL |
| 162 | utf8_isInvalid4(const ENCODING *enc, const char *p) |
| 163 | { |
| 164 | return UTF8_INVALID4((const unsigned char *)p); |
| 165 | } |
| 166 | |
| 167 | struct normal_encoding { |
| 168 | ENCODING enc; |
| 169 | unsigned char type[256]; |
| 170 | #ifdef XML_MIN_SIZE |
| 171 | int (PTRFASTCALL *byteType)(const ENCODING *, const char *); |
| 172 | int (PTRFASTCALL *isNameMin)(const ENCODING *, const char *); |
| 173 | int (PTRFASTCALL *isNmstrtMin)(const ENCODING *, const char *); |
| 174 | int (PTRFASTCALL *byteToAscii)(const ENCODING *, const char *); |
| 175 | int (PTRCALL *charMatches)(const ENCODING *, const char *, int); |
| 176 | #endif /* XML_MIN_SIZE */ |
| 177 | int (PTRFASTCALL *isName2)(const ENCODING *, const char *); |
| 178 | int (PTRFASTCALL *isName3)(const ENCODING *, const char *); |
| 179 | int (PTRFASTCALL *isName4)(const ENCODING *, const char *); |
| 180 | int (PTRFASTCALL *isNmstrt2)(const ENCODING *, const char *); |
| 181 | int (PTRFASTCALL *isNmstrt3)(const ENCODING *, const char *); |
| 182 | int (PTRFASTCALL *isNmstrt4)(const ENCODING *, const char *); |
| 183 | int (PTRFASTCALL *isInvalid2)(const ENCODING *, const char *); |
| 184 | int (PTRFASTCALL *isInvalid3)(const ENCODING *, const char *); |
| 185 | int (PTRFASTCALL *isInvalid4)(const ENCODING *, const char *); |
| 186 | }; |
| 187 | |
| 188 | #define AS_NORMAL_ENCODING(enc) ((const struct normal_encoding *) (enc)) |
| 189 | |
| 190 | #ifdef XML_MIN_SIZE |
| 191 | |
| 192 | #define STANDARD_VTABLE(E) \ |
| 193 | E ## byteType, \ |
| 194 | E ## isNameMin, \ |
| 195 | E ## isNmstrtMin, \ |
| 196 | E ## byteToAscii, \ |
| 197 | E ## charMatches, |
| 198 | |
| 199 | #else |
| 200 | |
| 201 | #define STANDARD_VTABLE(E) /* as nothing */ |
| 202 | |
| 203 | #endif |
| 204 | |
| 205 | #define NORMAL_VTABLE(E) \ |
| 206 | E ## isName2, \ |
| 207 | E ## isName3, \ |
| 208 | E ## isName4, \ |
| 209 | E ## isNmstrt2, \ |
| 210 | E ## isNmstrt3, \ |
| 211 | E ## isNmstrt4, \ |
| 212 | E ## isInvalid2, \ |
| 213 | E ## isInvalid3, \ |
| 214 | E ## isInvalid4 |
| 215 | |
| 216 | static int FASTCALL checkCharRefNumber(int); |
| 217 | |
| 218 | #include "xmltok_impl.h" |
| 219 | #include "ascii.h" |
| 220 | |
| 221 | #ifdef XML_MIN_SIZE |
| 222 | #define sb_isNameMin isNever |
| 223 | #define sb_isNmstrtMin isNever |
| 224 | #endif |
| 225 | |
| 226 | #ifdef XML_MIN_SIZE |
| 227 | #define MINBPC(enc) ((enc)->minBytesPerChar) |
| 228 | #else |
| 229 | /* minimum bytes per character */ |
| 230 | #define MINBPC(enc) 1 |
| 231 | #endif |
| 232 | |
| 233 | #define SB_BYTE_TYPE(enc, p) \ |
| 234 | (((struct normal_encoding *)(enc))->type[(unsigned char)*(p)]) |
| 235 | |
| 236 | #ifdef XML_MIN_SIZE |
| 237 | static int PTRFASTCALL |
| 238 | sb_byteType(const ENCODING *enc, const char *p) |
| 239 | { |
| 240 | return SB_BYTE_TYPE(enc, p); |
| 241 | } |
| 242 | #define BYTE_TYPE(enc, p) \ |
| 243 | (AS_NORMAL_ENCODING(enc)->byteType(enc, p)) |
| 244 | #else |
| 245 | #define BYTE_TYPE(enc, p) SB_BYTE_TYPE(enc, p) |
| 246 | #endif |
| 247 | |
| 248 | #ifdef XML_MIN_SIZE |
| 249 | #define BYTE_TO_ASCII(enc, p) \ |
| 250 | (AS_NORMAL_ENCODING(enc)->byteToAscii(enc, p)) |
| 251 | static int PTRFASTCALL |
| 252 | sb_byteToAscii(const ENCODING *enc, const char *p) |
| 253 | { |
| 254 | return *p; |
| 255 | } |
| 256 | #else |
| 257 | #define BYTE_TO_ASCII(enc, p) (*(p)) |
| 258 | #endif |
| 259 | |
| 260 | #define IS_NAME_CHAR(enc, p, n) \ |
| 261 | (AS_NORMAL_ENCODING(enc)->isName ## n(enc, p)) |
| 262 | #define IS_NMSTRT_CHAR(enc, p, n) \ |
| 263 | (AS_NORMAL_ENCODING(enc)->isNmstrt ## n(enc, p)) |
| 264 | #define IS_INVALID_CHAR(enc, p, n) \ |
| 265 | (AS_NORMAL_ENCODING(enc)->isInvalid ## n(enc, p)) |
| 266 | |
| 267 | #ifdef XML_MIN_SIZE |
| 268 | #define IS_NAME_CHAR_MINBPC(enc, p) \ |
| 269 | (AS_NORMAL_ENCODING(enc)->isNameMin(enc, p)) |
| 270 | #define IS_NMSTRT_CHAR_MINBPC(enc, p) \ |
| 271 | (AS_NORMAL_ENCODING(enc)->isNmstrtMin(enc, p)) |
| 272 | #else |
| 273 | #define IS_NAME_CHAR_MINBPC(enc, p) (0) |
| 274 | #define IS_NMSTRT_CHAR_MINBPC(enc, p) (0) |
| 275 | #endif |
| 276 | |
| 277 | #ifdef XML_MIN_SIZE |
| 278 | #define CHAR_MATCHES(enc, p, c) \ |
| 279 | (AS_NORMAL_ENCODING(enc)->charMatches(enc, p, c)) |
| 280 | static int PTRCALL |
| 281 | sb_charMatches(const ENCODING *enc, const char *p, int c) |
| 282 | { |
| 283 | return *p == c; |
| 284 | } |
| 285 | #else |
| 286 | /* c is an ASCII character */ |
| 287 | #define CHAR_MATCHES(enc, p, c) (*(p) == c) |
| 288 | #endif |
| 289 | |
| 290 | #define PREFIX(ident) normal_ ## ident |
| 291 | #include "xmltok_impl.c" |
| 292 | |
| 293 | #undef MINBPC |
| 294 | #undef BYTE_TYPE |
| 295 | #undef BYTE_TO_ASCII |
| 296 | #undef CHAR_MATCHES |
| 297 | #undef IS_NAME_CHAR |
| 298 | #undef IS_NAME_CHAR_MINBPC |
| 299 | #undef IS_NMSTRT_CHAR |
| 300 | #undef IS_NMSTRT_CHAR_MINBPC |
| 301 | #undef IS_INVALID_CHAR |
| 302 | |
| 303 | enum { /* UTF8_cvalN is value of masked first byte of N byte sequence */ |
| 304 | UTF8_cval1 = 0x00, |
| 305 | UTF8_cval2 = 0xc0, |
| 306 | UTF8_cval3 = 0xe0, |
| 307 | UTF8_cval4 = 0xf0 |
| 308 | }; |
| 309 | |
| 310 | static void PTRCALL |
| 311 | utf8_toUtf8(const ENCODING *enc, |
| 312 | const char **fromP, const char *fromLim, |
| 313 | char **toP, const char *toLim) |
| 314 | { |
| 315 | char *to; |
| 316 | const char *from; |
| 317 | if (fromLim - *fromP > toLim - *toP) { |
| 318 | /* Avoid copying partial characters. */ |
| 319 | for (fromLim = *fromP + (toLim - *toP); fromLim > *fromP; fromLim--) |
| 320 | if (((unsigned char)fromLim[-1] & 0xc0) != 0x80) |
| 321 | break; |
| 322 | } |
| 323 | for (to = *toP, from = *fromP; from != fromLim; from++, to++) |
| 324 | *to = *from; |
| 325 | *fromP = from; |
| 326 | *toP = to; |
| 327 | } |
| 328 | |
| 329 | static void PTRCALL |
| 330 | utf8_toUtf16(const ENCODING *enc, |
| 331 | const char **fromP, const char *fromLim, |
| 332 | unsigned short **toP, const unsigned short *toLim) |
| 333 | { |
| 334 | unsigned short *to = *toP; |
| 335 | const char *from = *fromP; |
| 336 | while (from != fromLim && to != toLim) { |
| 337 | switch (((struct normal_encoding *)enc)->type[(unsigned char)*from]) { |
| 338 | case BT_LEAD2: |
| 339 | *to++ = (unsigned short)(((from[0] & 0x1f) << 6) | (from[1] & 0x3f)); |
| 340 | from += 2; |
| 341 | break; |
| 342 | case BT_LEAD3: |
| 343 | *to++ = (unsigned short)(((from[0] & 0xf) << 12) |
| 344 | | ((from[1] & 0x3f) << 6) | (from[2] & 0x3f)); |
| 345 | from += 3; |
| 346 | break; |
| 347 | case BT_LEAD4: |
| 348 | { |
| 349 | unsigned long n; |
| 350 | if (to + 1 == toLim) |
| 351 | goto after; |
| 352 | n = ((from[0] & 0x7) << 18) | ((from[1] & 0x3f) << 12) |
| 353 | | ((from[2] & 0x3f) << 6) | (from[3] & 0x3f); |
| 354 | n -= 0x10000; |
| 355 | to[0] = (unsigned short)((n >> 10) | 0xD800); |
| 356 | to[1] = (unsigned short)((n & 0x3FF) | 0xDC00); |
| 357 | to += 2; |
| 358 | from += 4; |
| 359 | } |
| 360 | break; |
| 361 | default: |
| 362 | *to++ = *from++; |
| 363 | break; |
| 364 | } |
| 365 | } |
| 366 | after: |
| 367 | *fromP = from; |
| 368 | *toP = to; |
| 369 | } |
| 370 | |
| 371 | #ifdef XML_NS |
| 372 | static const struct normal_encoding utf8_encoding_ns = { |
| 373 | { VTABLE1, utf8_toUtf8, utf8_toUtf16, 1, 1, 0 }, |
| 374 | { |
| 375 | #include "asciitab.h" |
| 376 | #include "utf8tab.h" |
| 377 | }, |
| 378 | STANDARD_VTABLE(sb_) NORMAL_VTABLE(utf8_) |
| 379 | }; |
| 380 | #endif |
| 381 | |
| 382 | static const struct normal_encoding utf8_encoding = { |
| 383 | { VTABLE1, utf8_toUtf8, utf8_toUtf16, 1, 1, 0 }, |
| 384 | { |
| 385 | #define BT_COLON BT_NMSTRT |
| 386 | #include "asciitab.h" |
| 387 | #undef BT_COLON |
| 388 | #include "utf8tab.h" |
| 389 | }, |
| 390 | STANDARD_VTABLE(sb_) NORMAL_VTABLE(utf8_) |
| 391 | }; |
| 392 | |
| 393 | #ifdef XML_NS |
| 394 | |
| 395 | static const struct normal_encoding internal_utf8_encoding_ns = { |
| 396 | { VTABLE1, utf8_toUtf8, utf8_toUtf16, 1, 1, 0 }, |
| 397 | { |
| 398 | #include "iasciitab.h" |
| 399 | #include "utf8tab.h" |
| 400 | }, |
| 401 | STANDARD_VTABLE(sb_) NORMAL_VTABLE(utf8_) |
| 402 | }; |
| 403 | |
| 404 | #endif |
| 405 | |
| 406 | static const struct normal_encoding internal_utf8_encoding = { |
| 407 | { VTABLE1, utf8_toUtf8, utf8_toUtf16, 1, 1, 0 }, |
| 408 | { |
| 409 | #define BT_COLON BT_NMSTRT |
| 410 | #include "iasciitab.h" |
| 411 | #undef BT_COLON |
| 412 | #include "utf8tab.h" |
| 413 | }, |
| 414 | STANDARD_VTABLE(sb_) NORMAL_VTABLE(utf8_) |
| 415 | }; |
| 416 | |
| 417 | static void PTRCALL |
| 418 | latin1_toUtf8(const ENCODING *enc, |
| 419 | const char **fromP, const char *fromLim, |
| 420 | char **toP, const char *toLim) |
| 421 | { |
| 422 | for (;;) { |
| 423 | unsigned char c; |
| 424 | if (*fromP == fromLim) |
| 425 | break; |
| 426 | c = (unsigned char)**fromP; |
| 427 | if (c & 0x80) { |
| 428 | if (toLim - *toP < 2) |
| 429 | break; |
| 430 | *(*toP)++ = (char)((c >> 6) | UTF8_cval2); |
| 431 | *(*toP)++ = (char)((c & 0x3f) | 0x80); |
| 432 | (*fromP)++; |
| 433 | } |
| 434 | else { |
| 435 | if (*toP == toLim) |
| 436 | break; |
| 437 | *(*toP)++ = *(*fromP)++; |
| 438 | } |
| 439 | } |
| 440 | } |
| 441 | |
| 442 | static void PTRCALL |
| 443 | latin1_toUtf16(const ENCODING *enc, |
| 444 | const char **fromP, const char *fromLim, |
| 445 | unsigned short **toP, const unsigned short *toLim) |
| 446 | { |
| 447 | while (*fromP != fromLim && *toP != toLim) |
| 448 | *(*toP)++ = (unsigned char)*(*fromP)++; |
| 449 | } |
| 450 | |
| 451 | #ifdef XML_NS |
| 452 | |
| 453 | static const struct normal_encoding latin1_encoding_ns = { |
| 454 | { VTABLE1, latin1_toUtf8, latin1_toUtf16, 1, 0, 0 }, |
| 455 | { |
| 456 | #include "asciitab.h" |
| 457 | #include "latin1tab.h" |
| 458 | }, |
| 459 | STANDARD_VTABLE(sb_) |
| 460 | }; |
| 461 | |
| 462 | #endif |
| 463 | |
| 464 | static const struct normal_encoding latin1_encoding = { |
| 465 | { VTABLE1, latin1_toUtf8, latin1_toUtf16, 1, 0, 0 }, |
| 466 | { |
| 467 | #define BT_COLON BT_NMSTRT |
| 468 | #include "asciitab.h" |
| 469 | #undef BT_COLON |
| 470 | #include "latin1tab.h" |
| 471 | }, |
| 472 | STANDARD_VTABLE(sb_) |
| 473 | }; |
| 474 | |
| 475 | static void PTRCALL |
| 476 | ascii_toUtf8(const ENCODING *enc, |
| 477 | const char **fromP, const char *fromLim, |
| 478 | char **toP, const char *toLim) |
| 479 | { |
| 480 | while (*fromP != fromLim && *toP != toLim) |
| 481 | *(*toP)++ = *(*fromP)++; |
| 482 | } |
| 483 | |
| 484 | #ifdef XML_NS |
| 485 | |
| 486 | static const struct normal_encoding ascii_encoding_ns = { |
| 487 | { VTABLE1, ascii_toUtf8, latin1_toUtf16, 1, 1, 0 }, |
| 488 | { |
| 489 | #include "asciitab.h" |
| 490 | /* BT_NONXML == 0 */ |
| 491 | }, |
| 492 | STANDARD_VTABLE(sb_) |
| 493 | }; |
| 494 | |
| 495 | #endif |
| 496 | |
| 497 | static const struct normal_encoding ascii_encoding = { |
| 498 | { VTABLE1, ascii_toUtf8, latin1_toUtf16, 1, 1, 0 }, |
| 499 | { |
| 500 | #define BT_COLON BT_NMSTRT |
| 501 | #include "asciitab.h" |
| 502 | #undef BT_COLON |
| 503 | /* BT_NONXML == 0 */ |
| 504 | }, |
| 505 | STANDARD_VTABLE(sb_) |
| 506 | }; |
| 507 | |
| 508 | static int PTRFASTCALL |
| 509 | unicode_byte_type(char hi, char lo) |
| 510 | { |
| 511 | switch ((unsigned char)hi) { |
| 512 | case 0xD8: case 0xD9: case 0xDA: case 0xDB: |
| 513 | return BT_LEAD4; |
| 514 | case 0xDC: case 0xDD: case 0xDE: case 0xDF: |
| 515 | return BT_TRAIL; |
| 516 | case 0xFF: |
| 517 | switch ((unsigned char)lo) { |
| 518 | case 0xFF: |
| 519 | case 0xFE: |
| 520 | return BT_NONXML; |
| 521 | } |
| 522 | break; |
| 523 | } |
| 524 | return BT_NONASCII; |
| 525 | } |
| 526 | |
| 527 | #define DEFINE_UTF16_TO_UTF8(E) \ |
| 528 | static void PTRCALL \ |
| 529 | E ## toUtf8(const ENCODING *enc, \ |
| 530 | const char **fromP, const char *fromLim, \ |
| 531 | char **toP, const char *toLim) \ |
| 532 | { \ |
| 533 | const char *from; \ |
| 534 | for (from = *fromP; from != fromLim; from += 2) { \ |
| 535 | int plane; \ |
| 536 | unsigned char lo2; \ |
| 537 | unsigned char lo = GET_LO(from); \ |
| 538 | unsigned char hi = GET_HI(from); \ |
| 539 | switch (hi) { \ |
| 540 | case 0: \ |
| 541 | if (lo < 0x80) { \ |
| 542 | if (*toP == toLim) { \ |
| 543 | *fromP = from; \ |
| 544 | return; \ |
| 545 | } \ |
| 546 | *(*toP)++ = lo; \ |
| 547 | break; \ |
| 548 | } \ |
| 549 | /* fall through */ \ |
| 550 | case 0x1: case 0x2: case 0x3: \ |
| 551 | case 0x4: case 0x5: case 0x6: case 0x7: \ |
| 552 | if (toLim - *toP < 2) { \ |
| 553 | *fromP = from; \ |
| 554 | return; \ |
| 555 | } \ |
| 556 | *(*toP)++ = ((lo >> 6) | (hi << 2) | UTF8_cval2); \ |
| 557 | *(*toP)++ = ((lo & 0x3f) | 0x80); \ |
| 558 | break; \ |
| 559 | default: \ |
| 560 | if (toLim - *toP < 3) { \ |
| 561 | *fromP = from; \ |
| 562 | return; \ |
| 563 | } \ |
| 564 | /* 16 bits divided 4, 6, 6 amongst 3 bytes */ \ |
| 565 | *(*toP)++ = ((hi >> 4) | UTF8_cval3); \ |
| 566 | *(*toP)++ = (((hi & 0xf) << 2) | (lo >> 6) | 0x80); \ |
| 567 | *(*toP)++ = ((lo & 0x3f) | 0x80); \ |
| 568 | break; \ |
| 569 | case 0xD8: case 0xD9: case 0xDA: case 0xDB: \ |
| 570 | if (toLim - *toP < 4) { \ |
| 571 | *fromP = from; \ |
| 572 | return; \ |
| 573 | } \ |
| 574 | plane = (((hi & 0x3) << 2) | ((lo >> 6) & 0x3)) + 1; \ |
| 575 | *(*toP)++ = ((plane >> 2) | UTF8_cval4); \ |
| 576 | *(*toP)++ = (((lo >> 2) & 0xF) | ((plane & 0x3) << 4) | 0x80); \ |
| 577 | from += 2; \ |
| 578 | lo2 = GET_LO(from); \ |
| 579 | *(*toP)++ = (((lo & 0x3) << 4) \ |
| 580 | | ((GET_HI(from) & 0x3) << 2) \ |
| 581 | | (lo2 >> 6) \ |
| 582 | | 0x80); \ |
| 583 | *(*toP)++ = ((lo2 & 0x3f) | 0x80); \ |
| 584 | break; \ |
| 585 | } \ |
| 586 | } \ |
| 587 | *fromP = from; \ |
| 588 | } |
| 589 | |
| 590 | #define DEFINE_UTF16_TO_UTF16(E) \ |
| 591 | static void PTRCALL \ |
| 592 | E ## toUtf16(const ENCODING *enc, \ |
| 593 | const char **fromP, const char *fromLim, \ |
| 594 | unsigned short **toP, const unsigned short *toLim) \ |
| 595 | { \ |
| 596 | /* Avoid copying first half only of surrogate */ \ |
| 597 | if (fromLim - *fromP > ((toLim - *toP) << 1) \ |
| 598 | && (GET_HI(fromLim - 2) & 0xF8) == 0xD8) \ |
| 599 | fromLim -= 2; \ |
| 600 | for (; *fromP != fromLim && *toP != toLim; *fromP += 2) \ |
| 601 | *(*toP)++ = (GET_HI(*fromP) << 8) | GET_LO(*fromP); \ |
| 602 | } |
| 603 | |
| 604 | #define SET2(ptr, ch) \ |
| 605 | (((ptr)[0] = ((ch) & 0xff)), ((ptr)[1] = ((ch) >> 8))) |
| 606 | #define GET_LO(ptr) ((unsigned char)(ptr)[0]) |
| 607 | #define GET_HI(ptr) ((unsigned char)(ptr)[1]) |
| 608 | |
| 609 | DEFINE_UTF16_TO_UTF8(little2_) |
| 610 | DEFINE_UTF16_TO_UTF16(little2_) |
| 611 | |
| 612 | #undef SET2 |
| 613 | #undef GET_LO |
| 614 | #undef GET_HI |
| 615 | |
| 616 | #define SET2(ptr, ch) \ |
| 617 | (((ptr)[0] = ((ch) >> 8)), ((ptr)[1] = ((ch) & 0xFF))) |
| 618 | #define GET_LO(ptr) ((unsigned char)(ptr)[1]) |
| 619 | #define GET_HI(ptr) ((unsigned char)(ptr)[0]) |
| 620 | |
| 621 | DEFINE_UTF16_TO_UTF8(big2_) |
| 622 | DEFINE_UTF16_TO_UTF16(big2_) |
| 623 | |
| 624 | #undef SET2 |
| 625 | #undef GET_LO |
| 626 | #undef GET_HI |
| 627 | |
| 628 | #define LITTLE2_BYTE_TYPE(enc, p) \ |
| 629 | ((p)[1] == 0 \ |
| 630 | ? ((struct normal_encoding *)(enc))->type[(unsigned char)*(p)] \ |
| 631 | : unicode_byte_type((p)[1], (p)[0])) |
| 632 | #define LITTLE2_BYTE_TO_ASCII(enc, p) ((p)[1] == 0 ? (p)[0] : -1) |
| 633 | #define LITTLE2_CHAR_MATCHES(enc, p, c) ((p)[1] == 0 && (p)[0] == c) |
| 634 | #define LITTLE2_IS_NAME_CHAR_MINBPC(enc, p) \ |
| 635 | UCS2_GET_NAMING(namePages, (unsigned char)p[1], (unsigned char)p[0]) |
| 636 | #define LITTLE2_IS_NMSTRT_CHAR_MINBPC(enc, p) \ |
| 637 | UCS2_GET_NAMING(nmstrtPages, (unsigned char)p[1], (unsigned char)p[0]) |
| 638 | |
| 639 | #ifdef XML_MIN_SIZE |
| 640 | |
| 641 | static int PTRFASTCALL |
| 642 | little2_byteType(const ENCODING *enc, const char *p) |
| 643 | { |
| 644 | return LITTLE2_BYTE_TYPE(enc, p); |
| 645 | } |
| 646 | |
| 647 | static int PTRFASTCALL |
| 648 | little2_byteToAscii(const ENCODING *enc, const char *p) |
| 649 | { |
| 650 | return LITTLE2_BYTE_TO_ASCII(enc, p); |
| 651 | } |
| 652 | |
| 653 | static int PTRCALL |
| 654 | little2_charMatches(const ENCODING *enc, const char *p, int c) |
| 655 | { |
| 656 | return LITTLE2_CHAR_MATCHES(enc, p, c); |
| 657 | } |
| 658 | |
| 659 | static int PTRFASTCALL |
| 660 | little2_isNameMin(const ENCODING *enc, const char *p) |
| 661 | { |
| 662 | return LITTLE2_IS_NAME_CHAR_MINBPC(enc, p); |
| 663 | } |
| 664 | |
| 665 | static int PTRFASTCALL |
| 666 | little2_isNmstrtMin(const ENCODING *enc, const char *p) |
| 667 | { |
| 668 | return LITTLE2_IS_NMSTRT_CHAR_MINBPC(enc, p); |
| 669 | } |
| 670 | |
| 671 | #undef VTABLE |
| 672 | #define VTABLE VTABLE1, little2_toUtf8, little2_toUtf16 |
| 673 | |
| 674 | #else /* not XML_MIN_SIZE */ |
| 675 | |
| 676 | #undef PREFIX |
| 677 | #define PREFIX(ident) little2_ ## ident |
| 678 | #define MINBPC(enc) 2 |
| 679 | /* CHAR_MATCHES is guaranteed to have MINBPC bytes available. */ |
| 680 | #define BYTE_TYPE(enc, p) LITTLE2_BYTE_TYPE(enc, p) |
| 681 | #define BYTE_TO_ASCII(enc, p) LITTLE2_BYTE_TO_ASCII(enc, p) |
| 682 | #define CHAR_MATCHES(enc, p, c) LITTLE2_CHAR_MATCHES(enc, p, c) |
| 683 | #define IS_NAME_CHAR(enc, p, n) 0 |
| 684 | #define IS_NAME_CHAR_MINBPC(enc, p) LITTLE2_IS_NAME_CHAR_MINBPC(enc, p) |
| 685 | #define IS_NMSTRT_CHAR(enc, p, n) (0) |
| 686 | #define IS_NMSTRT_CHAR_MINBPC(enc, p) LITTLE2_IS_NMSTRT_CHAR_MINBPC(enc, p) |
| 687 | |
| 688 | #include "xmltok_impl.c" |
| 689 | |
| 690 | #undef MINBPC |
| 691 | #undef BYTE_TYPE |
| 692 | #undef BYTE_TO_ASCII |
| 693 | #undef CHAR_MATCHES |
| 694 | #undef IS_NAME_CHAR |
| 695 | #undef IS_NAME_CHAR_MINBPC |
| 696 | #undef IS_NMSTRT_CHAR |
| 697 | #undef IS_NMSTRT_CHAR_MINBPC |
| 698 | #undef IS_INVALID_CHAR |
| 699 | |
| 700 | #endif /* not XML_MIN_SIZE */ |
| 701 | |
| 702 | #ifdef XML_NS |
| 703 | |
| 704 | static const struct normal_encoding little2_encoding_ns = { |
| 705 | { VTABLE, 2, 0, |
| 706 | #if BYTEORDER == 1234 |
| 707 | 1 |
| 708 | #else |
| 709 | 0 |
| 710 | #endif |
| 711 | }, |
| 712 | { |
| 713 | #include "asciitab.h" |
| 714 | #include "latin1tab.h" |
| 715 | }, |
| 716 | STANDARD_VTABLE(little2_) |
| 717 | }; |
| 718 | |
| 719 | #endif |
| 720 | |
| 721 | static const struct normal_encoding little2_encoding = { |
| 722 | { VTABLE, 2, 0, |
| 723 | #if BYTEORDER == 1234 |
| 724 | 1 |
| 725 | #else |
| 726 | 0 |
| 727 | #endif |
| 728 | }, |
| 729 | { |
| 730 | #define BT_COLON BT_NMSTRT |
| 731 | #include "asciitab.h" |
| 732 | #undef BT_COLON |
| 733 | #include "latin1tab.h" |
| 734 | }, |
| 735 | STANDARD_VTABLE(little2_) |
| 736 | }; |
| 737 | |
| 738 | #if BYTEORDER != 4321 |
| 739 | |
| 740 | #ifdef XML_NS |
| 741 | |
| 742 | static const struct normal_encoding internal_little2_encoding_ns = { |
| 743 | { VTABLE, 2, 0, 1 }, |
| 744 | { |
| 745 | #include "iasciitab.h" |
| 746 | #include "latin1tab.h" |
| 747 | }, |
| 748 | STANDARD_VTABLE(little2_) |
| 749 | }; |
| 750 | |
| 751 | #endif |
| 752 | |
| 753 | static const struct normal_encoding internal_little2_encoding = { |
| 754 | { VTABLE, 2, 0, 1 }, |
| 755 | { |
| 756 | #define BT_COLON BT_NMSTRT |
| 757 | #include "iasciitab.h" |
| 758 | #undef BT_COLON |
| 759 | #include "latin1tab.h" |
| 760 | }, |
| 761 | STANDARD_VTABLE(little2_) |
| 762 | }; |
| 763 | |
| 764 | #endif |
| 765 | |
| 766 | |
| 767 | #define BIG2_BYTE_TYPE(enc, p) \ |
| 768 | ((p)[0] == 0 \ |
| 769 | ? ((struct normal_encoding *)(enc))->type[(unsigned char)(p)[1]] \ |
| 770 | : unicode_byte_type((p)[0], (p)[1])) |
| 771 | #define BIG2_BYTE_TO_ASCII(enc, p) ((p)[0] == 0 ? (p)[1] : -1) |
| 772 | #define BIG2_CHAR_MATCHES(enc, p, c) ((p)[0] == 0 && (p)[1] == c) |
| 773 | #define BIG2_IS_NAME_CHAR_MINBPC(enc, p) \ |
| 774 | UCS2_GET_NAMING(namePages, (unsigned char)p[0], (unsigned char)p[1]) |
| 775 | #define BIG2_IS_NMSTRT_CHAR_MINBPC(enc, p) \ |
| 776 | UCS2_GET_NAMING(nmstrtPages, (unsigned char)p[0], (unsigned char)p[1]) |
| 777 | |
| 778 | #ifdef XML_MIN_SIZE |
| 779 | |
| 780 | static int PTRFASTCALL |
| 781 | big2_byteType(const ENCODING *enc, const char *p) |
| 782 | { |
| 783 | return BIG2_BYTE_TYPE(enc, p); |
| 784 | } |
| 785 | |
| 786 | static int PTRFASTCALL |
| 787 | big2_byteToAscii(const ENCODING *enc, const char *p) |
| 788 | { |
| 789 | return BIG2_BYTE_TO_ASCII(enc, p); |
| 790 | } |
| 791 | |
| 792 | static int PTRCALL |
| 793 | big2_charMatches(const ENCODING *enc, const char *p, int c) |
| 794 | { |
| 795 | return BIG2_CHAR_MATCHES(enc, p, c); |
| 796 | } |
| 797 | |
| 798 | static int PTRFASTCALL |
| 799 | big2_isNameMin(const ENCODING *enc, const char *p) |
| 800 | { |
| 801 | return BIG2_IS_NAME_CHAR_MINBPC(enc, p); |
| 802 | } |
| 803 | |
| 804 | static int PTRFASTCALL |
| 805 | big2_isNmstrtMin(const ENCODING *enc, const char *p) |
| 806 | { |
| 807 | return BIG2_IS_NMSTRT_CHAR_MINBPC(enc, p); |
| 808 | } |
| 809 | |
| 810 | #undef VTABLE |
| 811 | #define VTABLE VTABLE1, big2_toUtf8, big2_toUtf16 |
| 812 | |
| 813 | #else /* not XML_MIN_SIZE */ |
| 814 | |
| 815 | #undef PREFIX |
| 816 | #define PREFIX(ident) big2_ ## ident |
| 817 | #define MINBPC(enc) 2 |
| 818 | /* CHAR_MATCHES is guaranteed to have MINBPC bytes available. */ |
| 819 | #define BYTE_TYPE(enc, p) BIG2_BYTE_TYPE(enc, p) |
| 820 | #define BYTE_TO_ASCII(enc, p) BIG2_BYTE_TO_ASCII(enc, p) |
| 821 | #define CHAR_MATCHES(enc, p, c) BIG2_CHAR_MATCHES(enc, p, c) |
| 822 | #define IS_NAME_CHAR(enc, p, n) 0 |
| 823 | #define IS_NAME_CHAR_MINBPC(enc, p) BIG2_IS_NAME_CHAR_MINBPC(enc, p) |
| 824 | #define IS_NMSTRT_CHAR(enc, p, n) (0) |
| 825 | #define IS_NMSTRT_CHAR_MINBPC(enc, p) BIG2_IS_NMSTRT_CHAR_MINBPC(enc, p) |
| 826 | |
| 827 | #include "xmltok_impl.c" |
| 828 | |
| 829 | #undef MINBPC |
| 830 | #undef BYTE_TYPE |
| 831 | #undef BYTE_TO_ASCII |
| 832 | #undef CHAR_MATCHES |
| 833 | #undef IS_NAME_CHAR |
| 834 | #undef IS_NAME_CHAR_MINBPC |
| 835 | #undef IS_NMSTRT_CHAR |
| 836 | #undef IS_NMSTRT_CHAR_MINBPC |
| 837 | #undef IS_INVALID_CHAR |
| 838 | |
| 839 | #endif /* not XML_MIN_SIZE */ |
| 840 | |
| 841 | #ifdef XML_NS |
| 842 | |
| 843 | static const struct normal_encoding big2_encoding_ns = { |
| 844 | { VTABLE, 2, 0, |
| 845 | #if BYTEORDER == 4321 |
| 846 | 1 |
| 847 | #else |
| 848 | 0 |
| 849 | #endif |
| 850 | }, |
| 851 | { |
| 852 | #include "asciitab.h" |
| 853 | #include "latin1tab.h" |
| 854 | }, |
| 855 | STANDARD_VTABLE(big2_) |
| 856 | }; |
| 857 | |
| 858 | #endif |
| 859 | |
| 860 | static const struct normal_encoding big2_encoding = { |
| 861 | { VTABLE, 2, 0, |
| 862 | #if BYTEORDER == 4321 |
| 863 | 1 |
| 864 | #else |
| 865 | 0 |
| 866 | #endif |
| 867 | }, |
| 868 | { |
| 869 | #define BT_COLON BT_NMSTRT |
| 870 | #include "asciitab.h" |
| 871 | #undef BT_COLON |
| 872 | #include "latin1tab.h" |
| 873 | }, |
| 874 | STANDARD_VTABLE(big2_) |
| 875 | }; |
| 876 | |
| 877 | #if BYTEORDER != 1234 |
| 878 | |
| 879 | #ifdef XML_NS |
| 880 | |
| 881 | static const struct normal_encoding internal_big2_encoding_ns = { |
| 882 | { VTABLE, 2, 0, 1 }, |
| 883 | { |
| 884 | #include "iasciitab.h" |
| 885 | #include "latin1tab.h" |
| 886 | }, |
| 887 | STANDARD_VTABLE(big2_) |
| 888 | }; |
| 889 | |
| 890 | #endif |
| 891 | |
| 892 | static const struct normal_encoding internal_big2_encoding = { |
| 893 | { VTABLE, 2, 0, 1 }, |
| 894 | { |
| 895 | #define BT_COLON BT_NMSTRT |
| 896 | #include "iasciitab.h" |
| 897 | #undef BT_COLON |
| 898 | #include "latin1tab.h" |
| 899 | }, |
| 900 | STANDARD_VTABLE(big2_) |
| 901 | }; |
| 902 | |
| 903 | #endif |
| 904 | |
| 905 | #undef PREFIX |
| 906 | |
| 907 | static int FASTCALL |
| 908 | streqci(const char *s1, const char *s2) |
| 909 | { |
| 910 | for (;;) { |
| 911 | char c1 = *s1++; |
| 912 | char c2 = *s2++; |
| 913 | if (ASCII_a <= c1 && c1 <= ASCII_z) |
| 914 | c1 += ASCII_A - ASCII_a; |
| 915 | if (ASCII_a <= c2 && c2 <= ASCII_z) |
| 916 | c2 += ASCII_A - ASCII_a; |
| 917 | if (c1 != c2) |
| 918 | return 0; |
| 919 | if (!c1) |
| 920 | break; |
| 921 | } |
| 922 | return 1; |
| 923 | } |
| 924 | |
| 925 | static void PTRCALL |
| 926 | initUpdatePosition(const ENCODING *enc, const char *ptr, |
| 927 | const char *end, POSITION *pos) |
| 928 | { |
| 929 | normal_updatePosition(&utf8_encoding.enc, ptr, end, pos); |
| 930 | } |
| 931 | |
| 932 | static int |
| 933 | toAscii(const ENCODING *enc, const char *ptr, const char *end) |
| 934 | { |
| 935 | char buf[1]; |
| 936 | char *p = buf; |
| 937 | XmlUtf8Convert(enc, &ptr, end, &p, p + 1); |
| 938 | if (p == buf) |
| 939 | return -1; |
| 940 | else |
| 941 | return buf[0]; |
| 942 | } |
| 943 | |
| 944 | static int FASTCALL |
| 945 | isSpace(int c) |
| 946 | { |
| 947 | switch (c) { |
| 948 | case 0x20: |
| 949 | case 0xD: |
| 950 | case 0xA: |
| 951 | case 0x9: |
| 952 | return 1; |
| 953 | } |
| 954 | return 0; |
| 955 | } |
| 956 | |
| 957 | /* Return 1 if there's just optional white space or there's an S |
| 958 | followed by name=val. |
| 959 | */ |
| 960 | static int |
| 961 | parsePseudoAttribute(const ENCODING *enc, |
| 962 | const char *ptr, |
| 963 | const char *end, |
| 964 | const char **namePtr, |
| 965 | const char **nameEndPtr, |
| 966 | const char **valPtr, |
| 967 | const char **nextTokPtr) |
| 968 | { |
| 969 | int c; |
| 970 | char open; |
| 971 | if (ptr == end) { |
| 972 | *namePtr = NULL; |
| 973 | return 1; |
| 974 | } |
| 975 | if (!isSpace(toAscii(enc, ptr, end))) { |
| 976 | *nextTokPtr = ptr; |
| 977 | return 0; |
| 978 | } |
| 979 | do { |
| 980 | ptr += enc->minBytesPerChar; |
| 981 | } while (isSpace(toAscii(enc, ptr, end))); |
| 982 | if (ptr == end) { |
| 983 | *namePtr = NULL; |
| 984 | return 1; |
| 985 | } |
| 986 | *namePtr = ptr; |
| 987 | for (;;) { |
| 988 | c = toAscii(enc, ptr, end); |
| 989 | if (c == -1) { |
| 990 | *nextTokPtr = ptr; |
| 991 | return 0; |
| 992 | } |
| 993 | if (c == ASCII_EQUALS) { |
| 994 | *nameEndPtr = ptr; |
| 995 | break; |
| 996 | } |
| 997 | if (isSpace(c)) { |
| 998 | *nameEndPtr = ptr; |
| 999 | do { |
| 1000 | ptr += enc->minBytesPerChar; |
| 1001 | } while (isSpace(c = toAscii(enc, ptr, end))); |
| 1002 | if (c != ASCII_EQUALS) { |
| 1003 | *nextTokPtr = ptr; |
| 1004 | return 0; |
| 1005 | } |
| 1006 | break; |
| 1007 | } |
| 1008 | ptr += enc->minBytesPerChar; |
| 1009 | } |
| 1010 | if (ptr == *namePtr) { |
| 1011 | *nextTokPtr = ptr; |
| 1012 | return 0; |
| 1013 | } |
| 1014 | ptr += enc->minBytesPerChar; |
| 1015 | c = toAscii(enc, ptr, end); |
| 1016 | while (isSpace(c)) { |
| 1017 | ptr += enc->minBytesPerChar; |
| 1018 | c = toAscii(enc, ptr, end); |
| 1019 | } |
| 1020 | if (c != ASCII_QUOT && c != ASCII_APOS) { |
| 1021 | *nextTokPtr = ptr; |
| 1022 | return 0; |
| 1023 | } |
| 1024 | open = (char)c; |
| 1025 | ptr += enc->minBytesPerChar; |
| 1026 | *valPtr = ptr; |
| 1027 | for (;; ptr += enc->minBytesPerChar) { |
| 1028 | c = toAscii(enc, ptr, end); |
| 1029 | if (c == open) |
| 1030 | break; |
| 1031 | if (!(ASCII_a <= c && c <= ASCII_z) |
| 1032 | && !(ASCII_A <= c && c <= ASCII_Z) |
| 1033 | && !(ASCII_0 <= c && c <= ASCII_9) |
| 1034 | && c != ASCII_PERIOD |
| 1035 | && c != ASCII_MINUS |
| 1036 | && c != ASCII_UNDERSCORE) { |
| 1037 | *nextTokPtr = ptr; |
| 1038 | return 0; |
| 1039 | } |
| 1040 | } |
| 1041 | *nextTokPtr = ptr + enc->minBytesPerChar; |
| 1042 | return 1; |
| 1043 | } |
| 1044 | |
| 1045 | static const char KW_version[] = { |
| 1046 | ASCII_v, ASCII_e, ASCII_r, ASCII_s, ASCII_i, ASCII_o, ASCII_n, '\0' |
| 1047 | }; |
| 1048 | |
| 1049 | static const char KW_encoding[] = { |
| 1050 | ASCII_e, ASCII_n, ASCII_c, ASCII_o, ASCII_d, ASCII_i, ASCII_n, ASCII_g, '\0' |
| 1051 | }; |
| 1052 | |
| 1053 | static const char KW_standalone[] = { |
| 1054 | ASCII_s, ASCII_t, ASCII_a, ASCII_n, ASCII_d, ASCII_a, ASCII_l, ASCII_o, |
| 1055 | ASCII_n, ASCII_e, '\0' |
| 1056 | }; |
| 1057 | |
| 1058 | static const char KW_yes[] = { |
| 1059 | ASCII_y, ASCII_e, ASCII_s, '\0' |
| 1060 | }; |
| 1061 | |
| 1062 | static const char KW_no[] = { |
| 1063 | ASCII_n, ASCII_o, '\0' |
| 1064 | }; |
| 1065 | |
| 1066 | static int |
| 1067 | doParseXmlDecl(const ENCODING *(*encodingFinder)(const ENCODING *, |
| 1068 | const char *, |
| 1069 | const char *), |
| 1070 | int isGeneralTextEntity, |
| 1071 | const ENCODING *enc, |
| 1072 | const char *ptr, |
| 1073 | const char *end, |
| 1074 | const char **badPtr, |
| 1075 | const char **versionPtr, |
| 1076 | const char **versionEndPtr, |
| 1077 | const char **encodingName, |
| 1078 | const ENCODING **encoding, |
| 1079 | int *standalone) |
| 1080 | { |
| 1081 | const char *val = NULL; |
| 1082 | const char *name = NULL; |
| 1083 | const char *nameEnd = NULL; |
| 1084 | ptr += 5 * enc->minBytesPerChar; |
| 1085 | end -= 2 * enc->minBytesPerChar; |
| 1086 | if (!parsePseudoAttribute(enc, ptr, end, &name, &nameEnd, &val, &ptr) |
| 1087 | || !name) { |
| 1088 | *badPtr = ptr; |
| 1089 | return 0; |
| 1090 | } |
| 1091 | if (!XmlNameMatchesAscii(enc, name, nameEnd, KW_version)) { |
| 1092 | if (!isGeneralTextEntity) { |
| 1093 | *badPtr = name; |
| 1094 | return 0; |
| 1095 | } |
| 1096 | } |
| 1097 | else { |
| 1098 | if (versionPtr) |
| 1099 | *versionPtr = val; |
| 1100 | if (versionEndPtr) |
| 1101 | *versionEndPtr = ptr; |
| 1102 | if (!parsePseudoAttribute(enc, ptr, end, &name, &nameEnd, &val, &ptr)) { |
| 1103 | *badPtr = ptr; |
| 1104 | return 0; |
| 1105 | } |
| 1106 | if (!name) { |
| 1107 | if (isGeneralTextEntity) { |
| 1108 | /* a TextDecl must have an EncodingDecl */ |
| 1109 | *badPtr = ptr; |
| 1110 | return 0; |
| 1111 | } |
| 1112 | return 1; |
| 1113 | } |
| 1114 | } |
| 1115 | if (XmlNameMatchesAscii(enc, name, nameEnd, KW_encoding)) { |
| 1116 | int c = toAscii(enc, val, end); |
| 1117 | if (!(ASCII_a <= c && c <= ASCII_z) && !(ASCII_A <= c && c <= ASCII_Z)) { |
| 1118 | *badPtr = val; |
| 1119 | return 0; |
| 1120 | } |
| 1121 | if (encodingName) |
| 1122 | *encodingName = val; |
| 1123 | if (encoding) |
| 1124 | *encoding = encodingFinder(enc, val, ptr - enc->minBytesPerChar); |
| 1125 | if (!parsePseudoAttribute(enc, ptr, end, &name, &nameEnd, &val, &ptr)) { |
| 1126 | *badPtr = ptr; |
| 1127 | return 0; |
| 1128 | } |
| 1129 | if (!name) |
| 1130 | return 1; |
| 1131 | } |
| 1132 | if (!XmlNameMatchesAscii(enc, name, nameEnd, KW_standalone) |
| 1133 | || isGeneralTextEntity) { |
| 1134 | *badPtr = name; |
| 1135 | return 0; |
| 1136 | } |
| 1137 | if (XmlNameMatchesAscii(enc, val, ptr - enc->minBytesPerChar, KW_yes)) { |
| 1138 | if (standalone) |
| 1139 | *standalone = 1; |
| 1140 | } |
| 1141 | else if (XmlNameMatchesAscii(enc, val, ptr - enc->minBytesPerChar, KW_no)) { |
| 1142 | if (standalone) |
| 1143 | *standalone = 0; |
| 1144 | } |
| 1145 | else { |
| 1146 | *badPtr = val; |
| 1147 | return 0; |
| 1148 | } |
| 1149 | while (isSpace(toAscii(enc, ptr, end))) |
| 1150 | ptr += enc->minBytesPerChar; |
| 1151 | if (ptr != end) { |
| 1152 | *badPtr = ptr; |
| 1153 | return 0; |
| 1154 | } |
| 1155 | return 1; |
| 1156 | } |
| 1157 | |
| 1158 | static int FASTCALL |
| 1159 | checkCharRefNumber(int result) |
| 1160 | { |
| 1161 | switch (result >> 8) { |
| 1162 | case 0xD8: case 0xD9: case 0xDA: case 0xDB: |
| 1163 | case 0xDC: case 0xDD: case 0xDE: case 0xDF: |
| 1164 | return -1; |
| 1165 | case 0: |
| 1166 | if (latin1_encoding.type[result] == BT_NONXML) |
| 1167 | return -1; |
| 1168 | break; |
| 1169 | case 0xFF: |
| 1170 | if (result == 0xFFFE || result == 0xFFFF) |
| 1171 | return -1; |
| 1172 | break; |
| 1173 | } |
| 1174 | return result; |
| 1175 | } |
| 1176 | |
| 1177 | int FASTCALL |
| 1178 | XmlUtf8Encode(int c, char *buf) |
| 1179 | { |
| 1180 | enum { |
| 1181 | /* minN is minimum legal resulting value for N byte sequence */ |
| 1182 | min2 = 0x80, |
| 1183 | min3 = 0x800, |
| 1184 | min4 = 0x10000 |
| 1185 | }; |
| 1186 | |
| 1187 | if (c < 0) |
| 1188 | return 0; |
| 1189 | if (c < min2) { |
| 1190 | buf[0] = (char)(c | UTF8_cval1); |
| 1191 | return 1; |
| 1192 | } |
| 1193 | if (c < min3) { |
| 1194 | buf[0] = (char)((c >> 6) | UTF8_cval2); |
| 1195 | buf[1] = (char)((c & 0x3f) | 0x80); |
| 1196 | return 2; |
| 1197 | } |
| 1198 | if (c < min4) { |
| 1199 | buf[0] = (char)((c >> 12) | UTF8_cval3); |
| 1200 | buf[1] = (char)(((c >> 6) & 0x3f) | 0x80); |
| 1201 | buf[2] = (char)((c & 0x3f) | 0x80); |
| 1202 | return 3; |
| 1203 | } |
| 1204 | if (c < 0x110000) { |
| 1205 | buf[0] = (char)((c >> 18) | UTF8_cval4); |
| 1206 | buf[1] = (char)(((c >> 12) & 0x3f) | 0x80); |
| 1207 | buf[2] = (char)(((c >> 6) & 0x3f) | 0x80); |
| 1208 | buf[3] = (char)((c & 0x3f) | 0x80); |
| 1209 | return 4; |
| 1210 | } |
| 1211 | return 0; |
| 1212 | } |
| 1213 | |
| 1214 | int FASTCALL |
| 1215 | XmlUtf16Encode(int charNum, unsigned short *buf) |
| 1216 | { |
| 1217 | if (charNum < 0) |
| 1218 | return 0; |
| 1219 | if (charNum < 0x10000) { |
| 1220 | buf[0] = (unsigned short)charNum; |
| 1221 | return 1; |
| 1222 | } |
| 1223 | if (charNum < 0x110000) { |
| 1224 | charNum -= 0x10000; |
| 1225 | buf[0] = (unsigned short)((charNum >> 10) + 0xD800); |
| 1226 | buf[1] = (unsigned short)((charNum & 0x3FF) + 0xDC00); |
| 1227 | return 2; |
| 1228 | } |
| 1229 | return 0; |
| 1230 | } |
| 1231 | |
| 1232 | struct unknown_encoding { |
| 1233 | struct normal_encoding normal; |
| 1234 | int (*convert)(void *userData, const char *p); |
| 1235 | void *userData; |
| 1236 | unsigned short utf16[256]; |
| 1237 | char utf8[256][4]; |
| 1238 | }; |
| 1239 | |
| 1240 | #define AS_UNKNOWN_ENCODING(enc) ((const struct unknown_encoding *) (enc)) |
| 1241 | |
| 1242 | int |
| 1243 | XmlSizeOfUnknownEncoding(void) |
| 1244 | { |
| 1245 | return sizeof(struct unknown_encoding); |
| 1246 | } |
| 1247 | |
| 1248 | static int PTRFASTCALL |
| 1249 | unknown_isName(const ENCODING *enc, const char *p) |
| 1250 | { |
| 1251 | const struct unknown_encoding *uenc = AS_UNKNOWN_ENCODING(enc); |
| 1252 | int c = uenc->convert(uenc->userData, p); |
| 1253 | if (c & ~0xFFFF) |
| 1254 | return 0; |
| 1255 | return UCS2_GET_NAMING(namePages, c >> 8, c & 0xFF); |
| 1256 | } |
| 1257 | |
| 1258 | static int PTRFASTCALL |
| 1259 | unknown_isNmstrt(const ENCODING *enc, const char *p) |
| 1260 | { |
| 1261 | const struct unknown_encoding *uenc = AS_UNKNOWN_ENCODING(enc); |
| 1262 | int c = uenc->convert(uenc->userData, p); |
| 1263 | if (c & ~0xFFFF) |
| 1264 | return 0; |
| 1265 | return UCS2_GET_NAMING(nmstrtPages, c >> 8, c & 0xFF); |
| 1266 | } |
| 1267 | |
| 1268 | static int PTRFASTCALL |
| 1269 | unknown_isInvalid(const ENCODING *enc, const char *p) |
| 1270 | { |
| 1271 | const struct unknown_encoding *uenc = AS_UNKNOWN_ENCODING(enc); |
| 1272 | int c = uenc->convert(uenc->userData, p); |
| 1273 | return (c & ~0xFFFF) || checkCharRefNumber(c) < 0; |
| 1274 | } |
| 1275 | |
| 1276 | static void PTRCALL |
| 1277 | unknown_toUtf8(const ENCODING *enc, |
| 1278 | const char **fromP, const char *fromLim, |
| 1279 | char **toP, const char *toLim) |
| 1280 | { |
| 1281 | const struct unknown_encoding *uenc = AS_UNKNOWN_ENCODING(enc); |
| 1282 | char buf[XML_UTF8_ENCODE_MAX]; |
| 1283 | for (;;) { |
| 1284 | const char *utf8; |
| 1285 | int n; |
| 1286 | if (*fromP == fromLim) |
| 1287 | break; |
| 1288 | utf8 = uenc->utf8[(unsigned char)**fromP]; |
| 1289 | n = *utf8++; |
| 1290 | if (n == 0) { |
| 1291 | int c = uenc->convert(uenc->userData, *fromP); |
| 1292 | n = XmlUtf8Encode(c, buf); |
| 1293 | if (n > toLim - *toP) |
| 1294 | break; |
| 1295 | utf8 = buf; |
| 1296 | *fromP += (AS_NORMAL_ENCODING(enc)->type[(unsigned char)**fromP] |
| 1297 | - (BT_LEAD2 - 2)); |
| 1298 | } |
| 1299 | else { |
| 1300 | if (n > toLim - *toP) |
| 1301 | break; |
| 1302 | (*fromP)++; |
| 1303 | } |
| 1304 | do { |
| 1305 | *(*toP)++ = *utf8++; |
| 1306 | } while (--n != 0); |
| 1307 | } |
| 1308 | } |
| 1309 | |
| 1310 | static void PTRCALL |
| 1311 | unknown_toUtf16(const ENCODING *enc, |
| 1312 | const char **fromP, const char *fromLim, |
| 1313 | unsigned short **toP, const unsigned short *toLim) |
| 1314 | { |
| 1315 | const struct unknown_encoding *uenc = AS_UNKNOWN_ENCODING(enc); |
| 1316 | while (*fromP != fromLim && *toP != toLim) { |
| 1317 | unsigned short c = uenc->utf16[(unsigned char)**fromP]; |
| 1318 | if (c == 0) { |
| 1319 | c = (unsigned short) |
| 1320 | uenc->convert(uenc->userData, *fromP); |
| 1321 | *fromP += (AS_NORMAL_ENCODING(enc)->type[(unsigned char)**fromP] |
| 1322 | - (BT_LEAD2 - 2)); |
| 1323 | } |
| 1324 | else |
| 1325 | (*fromP)++; |
| 1326 | *(*toP)++ = c; |
| 1327 | } |
| 1328 | } |
| 1329 | |
| 1330 | ENCODING * |
| 1331 | XmlInitUnknownEncoding(void *mem, |
| 1332 | int *table, |
| 1333 | CONVERTER convert, |
| 1334 | void *userData) |
| 1335 | { |
| 1336 | int i; |
| 1337 | struct unknown_encoding *e = (struct unknown_encoding *)mem; |
| 1338 | for (i = 0; i < (int)sizeof(struct normal_encoding); i++) |
| 1339 | ((char *)mem)[i] = ((char *)&latin1_encoding)[i]; |
| 1340 | for (i = 0; i < 128; i++) |
| 1341 | if (latin1_encoding.type[i] != BT_OTHER |
| 1342 | && latin1_encoding.type[i] != BT_NONXML |
| 1343 | && table[i] != i) |
| 1344 | return 0; |
| 1345 | for (i = 0; i < 256; i++) { |
| 1346 | int c = table[i]; |
| 1347 | if (c == -1) { |
| 1348 | e->normal.type[i] = BT_MALFORM; |
| 1349 | /* This shouldn't really get used. */ |
| 1350 | e->utf16[i] = 0xFFFF; |
| 1351 | e->utf8[i][0] = 1; |
| 1352 | e->utf8[i][1] = 0; |
| 1353 | } |
| 1354 | else if (c < 0) { |
| 1355 | if (c < -4) |
| 1356 | return 0; |
| 1357 | e->normal.type[i] = (unsigned char)(BT_LEAD2 - (c + 2)); |
| 1358 | e->utf8[i][0] = 0; |
| 1359 | e->utf16[i] = 0; |
| 1360 | } |
| 1361 | else if (c < 0x80) { |
| 1362 | if (latin1_encoding.type[c] != BT_OTHER |
| 1363 | && latin1_encoding.type[c] != BT_NONXML |
| 1364 | && c != i) |
| 1365 | return 0; |
| 1366 | e->normal.type[i] = latin1_encoding.type[c]; |
| 1367 | e->utf8[i][0] = 1; |
| 1368 | e->utf8[i][1] = (char)c; |
| 1369 | e->utf16[i] = (unsigned short)(c == 0 ? 0xFFFF : c); |
| 1370 | } |
| 1371 | else if (checkCharRefNumber(c) < 0) { |
| 1372 | e->normal.type[i] = BT_NONXML; |
| 1373 | /* This shouldn't really get used. */ |
| 1374 | e->utf16[i] = 0xFFFF; |
| 1375 | e->utf8[i][0] = 1; |
| 1376 | e->utf8[i][1] = 0; |
| 1377 | } |
| 1378 | else { |
| 1379 | if (c > 0xFFFF) |
| 1380 | return 0; |
| 1381 | if (UCS2_GET_NAMING(nmstrtPages, c >> 8, c & 0xff)) |
| 1382 | e->normal.type[i] = BT_NMSTRT; |
| 1383 | else if (UCS2_GET_NAMING(namePages, c >> 8, c & 0xff)) |
| 1384 | e->normal.type[i] = BT_NAME; |
| 1385 | else |
| 1386 | e->normal.type[i] = BT_OTHER; |
| 1387 | e->utf8[i][0] = (char)XmlUtf8Encode(c, e->utf8[i] + 1); |
| 1388 | e->utf16[i] = (unsigned short)c; |
| 1389 | } |
| 1390 | } |
| 1391 | e->userData = userData; |
| 1392 | e->convert = convert; |
| 1393 | if (convert) { |
| 1394 | e->normal.isName2 = unknown_isName; |
| 1395 | e->normal.isName3 = unknown_isName; |
| 1396 | e->normal.isName4 = unknown_isName; |
| 1397 | e->normal.isNmstrt2 = unknown_isNmstrt; |
| 1398 | e->normal.isNmstrt3 = unknown_isNmstrt; |
| 1399 | e->normal.isNmstrt4 = unknown_isNmstrt; |
| 1400 | e->normal.isInvalid2 = unknown_isInvalid; |
| 1401 | e->normal.isInvalid3 = unknown_isInvalid; |
| 1402 | e->normal.isInvalid4 = unknown_isInvalid; |
| 1403 | } |
| 1404 | e->normal.enc.utf8Convert = unknown_toUtf8; |
| 1405 | e->normal.enc.utf16Convert = unknown_toUtf16; |
| 1406 | return &(e->normal.enc); |
| 1407 | } |
| 1408 | |
| 1409 | /* If this enumeration is changed, getEncodingIndex and encodings |
| 1410 | must also be changed. */ |
| 1411 | enum { |
| 1412 | UNKNOWN_ENC = -1, |
| 1413 | ISO_8859_1_ENC = 0, |
| 1414 | US_ASCII_ENC, |
| 1415 | UTF_8_ENC, |
| 1416 | UTF_16_ENC, |
| 1417 | UTF_16BE_ENC, |
| 1418 | UTF_16LE_ENC, |
| 1419 | /* must match encodingNames up to here */ |
| 1420 | NO_ENC |
| 1421 | }; |
| 1422 | |
| 1423 | static const char KW_ISO_8859_1[] = { |
| 1424 | ASCII_I, ASCII_S, ASCII_O, ASCII_MINUS, ASCII_8, ASCII_8, ASCII_5, ASCII_9, |
| 1425 | ASCII_MINUS, ASCII_1, '\0' |
| 1426 | }; |
| 1427 | static const char KW_US_ASCII[] = { |
| 1428 | ASCII_U, ASCII_S, ASCII_MINUS, ASCII_A, ASCII_S, ASCII_C, ASCII_I, ASCII_I, |
| 1429 | '\0' |
| 1430 | }; |
| 1431 | static const char KW_UTF_8[] = { |
| 1432 | ASCII_U, ASCII_T, ASCII_F, ASCII_MINUS, ASCII_8, '\0' |
| 1433 | }; |
| 1434 | static const char KW_UTF_16[] = { |
| 1435 | ASCII_U, ASCII_T, ASCII_F, ASCII_MINUS, ASCII_1, ASCII_6, '\0' |
| 1436 | }; |
| 1437 | static const char KW_UTF_16BE[] = { |
| 1438 | ASCII_U, ASCII_T, ASCII_F, ASCII_MINUS, ASCII_1, ASCII_6, ASCII_B, ASCII_E, |
| 1439 | '\0' |
| 1440 | }; |
| 1441 | static const char KW_UTF_16LE[] = { |
| 1442 | ASCII_U, ASCII_T, ASCII_F, ASCII_MINUS, ASCII_1, ASCII_6, ASCII_L, ASCII_E, |
| 1443 | '\0' |
| 1444 | }; |
| 1445 | |
| 1446 | static int FASTCALL |
| 1447 | getEncodingIndex(const char *name) |
| 1448 | { |
| 1449 | static const char *encodingNames[] = { |
| 1450 | KW_ISO_8859_1, |
| 1451 | KW_US_ASCII, |
| 1452 | KW_UTF_8, |
| 1453 | KW_UTF_16, |
| 1454 | KW_UTF_16BE, |
| 1455 | KW_UTF_16LE, |
| 1456 | }; |
| 1457 | int i; |
| 1458 | if (name == NULL) |
| 1459 | return NO_ENC; |
| 1460 | for (i = 0; i < (int)(sizeof(encodingNames)/sizeof(encodingNames[0])); i++) |
| 1461 | if (streqci(name, encodingNames[i])) |
| 1462 | return i; |
| 1463 | return UNKNOWN_ENC; |
| 1464 | } |
| 1465 | |
| 1466 | /* For binary compatibility, we store the index of the encoding |
| 1467 | specified at initialization in the isUtf16 member. |
| 1468 | */ |
| 1469 | |
| 1470 | #define INIT_ENC_INDEX(enc) ((int)(enc)->initEnc.isUtf16) |
| 1471 | #define SET_INIT_ENC_INDEX(enc, i) ((enc)->initEnc.isUtf16 = (char)i) |
| 1472 | |
| 1473 | /* This is what detects the encoding. encodingTable maps from |
| 1474 | encoding indices to encodings; INIT_ENC_INDEX(enc) is the index of |
| 1475 | the external (protocol) specified encoding; state is |
| 1476 | XML_CONTENT_STATE if we're parsing an external text entity, and |
| 1477 | XML_PROLOG_STATE otherwise. |
| 1478 | */ |
| 1479 | |
| 1480 | |
| 1481 | static int |
| 1482 | initScan(const ENCODING **encodingTable, |
| 1483 | const INIT_ENCODING *enc, |
| 1484 | int state, |
| 1485 | const char *ptr, |
| 1486 | const char *end, |
| 1487 | const char **nextTokPtr) |
| 1488 | { |
| 1489 | const ENCODING **encPtr; |
| 1490 | |
| 1491 | if (ptr == end) |
| 1492 | return XML_TOK_NONE; |
| 1493 | encPtr = enc->encPtr; |
| 1494 | if (ptr + 1 == end) { |
| 1495 | /* only a single byte available for auto-detection */ |
| 1496 | #ifndef XML_DTD /* FIXME */ |
| 1497 | /* a well-formed document entity must have more than one byte */ |
| 1498 | if (state != XML_CONTENT_STATE) |
| 1499 | return XML_TOK_PARTIAL; |
| 1500 | #endif |
| 1501 | /* so we're parsing an external text entity... */ |
| 1502 | /* if UTF-16 was externally specified, then we need at least 2 bytes */ |
| 1503 | switch (INIT_ENC_INDEX(enc)) { |
| 1504 | case UTF_16_ENC: |
| 1505 | case UTF_16LE_ENC: |
| 1506 | case UTF_16BE_ENC: |
| 1507 | return XML_TOK_PARTIAL; |
| 1508 | } |
| 1509 | switch ((unsigned char)*ptr) { |
| 1510 | case 0xFE: |
| 1511 | case 0xFF: |
| 1512 | case 0xEF: /* possibly first byte of UTF-8 BOM */ |
| 1513 | if (INIT_ENC_INDEX(enc) == ISO_8859_1_ENC |
| 1514 | && state == XML_CONTENT_STATE) |
| 1515 | break; |
| 1516 | /* fall through */ |
| 1517 | case 0x00: |
| 1518 | case 0x3C: |
| 1519 | return XML_TOK_PARTIAL; |
| 1520 | } |
| 1521 | } |
| 1522 | else { |
| 1523 | switch (((unsigned char)ptr[0] << 8) | (unsigned char)ptr[1]) { |
| 1524 | case 0xFEFF: |
| 1525 | if (INIT_ENC_INDEX(enc) == ISO_8859_1_ENC |
| 1526 | && state == XML_CONTENT_STATE) |
| 1527 | break; |
| 1528 | *nextTokPtr = ptr + 2; |
| 1529 | *encPtr = encodingTable[UTF_16BE_ENC]; |
| 1530 | return XML_TOK_BOM; |
| 1531 | /* 00 3C is handled in the default case */ |
| 1532 | case 0x3C00: |
| 1533 | if ((INIT_ENC_INDEX(enc) == UTF_16BE_ENC |
| 1534 | || INIT_ENC_INDEX(enc) == UTF_16_ENC) |
| 1535 | && state == XML_CONTENT_STATE) |
| 1536 | break; |
| 1537 | *encPtr = encodingTable[UTF_16LE_ENC]; |
| 1538 | return XmlTok(*encPtr, state, ptr, end, nextTokPtr); |
| 1539 | case 0xFFFE: |
| 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_16LE_ENC]; |
| 1545 | return XML_TOK_BOM; |
| 1546 | case 0xEFBB: |
| 1547 | /* Maybe a UTF-8 BOM (EF BB BF) */ |
| 1548 | /* If there's an explicitly specified (external) encoding |
| 1549 | of ISO-8859-1 or some flavour of UTF-16 |
| 1550 | and this is an external text entity, |
| 1551 | don't look for the BOM, |
| 1552 | because it might be a legal data. |
| 1553 | */ |
| 1554 | if (state == XML_CONTENT_STATE) { |
| 1555 | int e = INIT_ENC_INDEX(enc); |
| 1556 | if (e == ISO_8859_1_ENC || e == UTF_16BE_ENC |
| 1557 | || e == UTF_16LE_ENC || e == UTF_16_ENC) |
| 1558 | break; |
| 1559 | } |
| 1560 | if (ptr + 2 == end) |
| 1561 | return XML_TOK_PARTIAL; |
| 1562 | if ((unsigned char)ptr[2] == 0xBF) { |
| 1563 | *nextTokPtr = ptr + 3; |
| 1564 | *encPtr = encodingTable[UTF_8_ENC]; |
| 1565 | return XML_TOK_BOM; |
| 1566 | } |
| 1567 | break; |
| 1568 | default: |
| 1569 | if (ptr[0] == '\0') { |
| 1570 | /* 0 isn't a legal data character. Furthermore a document |
| 1571 | entity can only start with ASCII characters. So the only |
| 1572 | way this can fail to be big-endian UTF-16 if it it's an |
| 1573 | external parsed general entity that's labelled as |
| 1574 | UTF-16LE. |
| 1575 | */ |
| 1576 | if (state == XML_CONTENT_STATE && INIT_ENC_INDEX(enc) == UTF_16LE_ENC) |
| 1577 | break; |
| 1578 | *encPtr = encodingTable[UTF_16BE_ENC]; |
| 1579 | return XmlTok(*encPtr, state, ptr, end, nextTokPtr); |
| 1580 | } |
| 1581 | else if (ptr[1] == '\0') { |
| 1582 | /* We could recover here in the case: |
| 1583 | - parsing an external entity |
| 1584 | - second byte is 0 |
| 1585 | - no externally specified encoding |
| 1586 | - no encoding declaration |
| 1587 | by assuming UTF-16LE. But we don't, because this would mean when |
| 1588 | presented just with a single byte, we couldn't reliably determine |
| 1589 | whether we needed further bytes. |
| 1590 | */ |
| 1591 | if (state == XML_CONTENT_STATE) |
| 1592 | break; |
| 1593 | *encPtr = encodingTable[UTF_16LE_ENC]; |
| 1594 | return XmlTok(*encPtr, state, ptr, end, nextTokPtr); |
| 1595 | } |
| 1596 | break; |
| 1597 | } |
| 1598 | } |
| 1599 | *encPtr = encodingTable[INIT_ENC_INDEX(enc)]; |
| 1600 | return XmlTok(*encPtr, state, ptr, end, nextTokPtr); |
| 1601 | } |
| 1602 | |
| 1603 | |
| 1604 | #define NS(x) x |
| 1605 | #define ns(x) x |
| 1606 | #include "xmltok_ns.c" |
| 1607 | #undef NS |
| 1608 | #undef ns |
| 1609 | |
| 1610 | #ifdef XML_NS |
| 1611 | |
| 1612 | #define NS(x) x ## NS |
| 1613 | #define ns(x) x ## _ns |
| 1614 | |
| 1615 | #include "xmltok_ns.c" |
| 1616 | |
| 1617 | #undef NS |
| 1618 | #undef ns |
| 1619 | |
| 1620 | ENCODING * |
| 1621 | XmlInitUnknownEncodingNS(void *mem, |
| 1622 | int *table, |
| 1623 | CONVERTER convert, |
| 1624 | void *userData) |
| 1625 | { |
| 1626 | ENCODING *enc = XmlInitUnknownEncoding(mem, table, convert, userData); |
| 1627 | if (enc) |
| 1628 | ((struct normal_encoding *)enc)->type[ASCII_COLON] = BT_COLON; |
| 1629 | return enc; |
| 1630 | } |
| 1631 | |
| 1632 | #endif /* XML_NS */ |