/* * %W% %E% * * (C) Copyright IBM Corp. 1998, 1999, 2000 - All Rights Reserved * */ #include "LETypes.h" #include "LEScripts.h" #include "OpenTypeTables.h" #include "OpenTypeUtilities.h" #include "IndicReordering.h" U_NAMESPACE_BEGIN #define ARRAY_SIZE(array) (sizeof array / sizeof array[0]) enum { // Split matra table indices _x1 = 1 << IndicClassTable::CF_INDEX_SHIFT, _x2 = 2 << IndicClassTable::CF_INDEX_SHIFT, _x3 = 3 << IndicClassTable::CF_INDEX_SHIFT, _x4 = 4 << IndicClassTable::CF_INDEX_SHIFT, _x5 = 5 << IndicClassTable::CF_INDEX_SHIFT, _x6 = 6 << IndicClassTable::CF_INDEX_SHIFT, _x7 = 7 << IndicClassTable::CF_INDEX_SHIFT, _x8 = 8 << IndicClassTable::CF_INDEX_SHIFT, _x9 = 9 << IndicClassTable::CF_INDEX_SHIFT, // simple classes _xx = IndicClassTable::CC_RESERVED, _ma = IndicClassTable::CC_MODIFYING_MARK_ABOVE, _mp = IndicClassTable::CC_MODIFYING_MARK_POST, _iv = IndicClassTable::CC_INDEPENDENT_VOWEL, _ct = IndicClassTable::CC_CONSONANT | IndicClassTable::CF_CONSONANT, _cn = IndicClassTable::CC_CONSONANT_WITH_NUKTA | IndicClassTable::CF_CONSONANT, _nu = IndicClassTable::CC_NUKTA, _dv = IndicClassTable::CC_DEPENDENT_VOWEL, _dl = _dv | IndicClassTable::CF_MATRA_PRE, _db = _dv | IndicClassTable::CF_MATRA_BELOW, _da = _dv | IndicClassTable::CF_MATRA_ABOVE, _dr = _dv | IndicClassTable::CF_MATRA_POST, _lm = _dv | IndicClassTable::CF_LENGTH_MARK, _vr = IndicClassTable::CC_VIRAMA, // split matras _s1 = _dv | _x1, _s2 = _dv | _x2, _s3 = _dv | _x3, _s4 = _dv | _x4, _s5 = _dv | _x5, _s6 = _dv | _x6, _s7 = _dv | _x7, _s8 = _dv | _x8, _s9 = _dv | _x9, // consonants with special forms // NOTE: this assumes that no consonants with nukta have // special forms... (Bengali RA?) _bb = _ct | IndicClassTable::CF_BELOW_BASE, _pb = _ct | IndicClassTable::CF_POST_BASE, _vt = _bb | IndicClassTable::CF_VATTU, _rv = _vt | IndicClassTable::CF_REPH, _rp = _pb | IndicClassTable::CF_REPH, _rb = _bb | IndicClassTable::CF_REPH }; // // Character class tables // static const IndicClassTable::CharClass devaCharClasses[] = { _xx, _ma, _ma, _mp, _xx, _iv, _iv, _iv, _iv, _iv, _iv, _iv, _iv, _iv, _iv, _iv, // 0900 - 090F _iv, _iv, _iv, _iv, _iv, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, // 0910 - 091F _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _cn, _ct, _ct, _ct, _ct, _ct, _ct, // 0920 - 092F _rv, _cn, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _xx, _xx, _nu, _xx, _dr, _dl, // 0930 - 093F _dr, _db, _db, _db, _db, _da, _da, _da, _da, _dr, _dr, _dr, _dr, _vr, _xx, _xx, // 0940 - 094F _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _cn, _cn, _cn, _cn, _cn, _cn, _cn, _cn, // 0950 - 095F _iv, _iv, _db, _db, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, // 0960 - 096F _xx // 0970 }; static const IndicClassTable::CharClass bengCharClasses[] = { _xx, _ma, _mp, _mp, _xx, _iv, _iv, _iv, _iv, _iv, _iv, _iv, _iv, _xx, _xx, _iv, // 0980 - 098F _iv, _xx, _xx, _iv, _iv, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, // 0990 - 099F _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _xx, _ct, _ct, _bb, _ct, _ct, _pb, // 09A0 - 09AF _rv, _xx, _ct, _xx, _xx, _xx, _ct, _ct, _ct, _ct, _xx, _xx, _nu, _xx, _dr, _dl, // 09B0 - 09BF _dr, _db, _db, _db, _db, _xx, _xx, _dl, _dl, _xx, _xx, _s1, _s2, _vr, _xx, _xx, // 09C0 - 09CF _xx, _xx, _xx, _xx, _xx, _xx, _xx, _dr, _xx, _xx, _xx, _xx, _cn, _cn, _xx, _cn, // 09D0 - 09DF _iv, _iv, _dv, _dv, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, // 09E0 - 09EF _ct, _ct, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx // 09F0 - 09FA }; static const IndicClassTable::CharClass punjCharClasses[] = { _xx, _xx, _ma, _xx, _xx, _iv, _iv, _iv, _iv, _iv, _iv, _xx, _xx, _xx, _xx, _iv, // 0A00 - 0A0F _iv, _xx, _xx, _iv, _iv, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, // 0A10 - 0A1F _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _xx, _ct, _ct, _ct, _ct, _ct, _bb, // 0A20 - 0A2F _vt, _xx, _ct, _ct, _xx, _bb, _ct, _xx, _ct, _bb, _xx, _xx, _nu, _xx, _dr, _dl, // 0A30 - 0A3F _dr, _db, _db, _xx, _xx, _xx, _xx, _da, _da, _xx, _xx, _da, _da, _vr, _xx, _xx, // 0A40 - 0A4F _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _cn, _cn, _cn, _cn, _xx, _cn, _xx, // 0A50 - 0A5F _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, // 0A60 - 0A6F _ma, _ma, _ct, _ct, _xx // 0A70 - 0A74 }; static const IndicClassTable::CharClass gujrCharClasses[] = { _xx, _ma, _ma, _mp, _xx, _iv, _iv, _iv, _iv, _iv, _iv, _iv, _xx, _iv, _xx, _iv, // 0A80 - 0A8F _iv, _iv, _xx, _iv, _iv, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, // 0A90 - 0A9F _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _xx, _ct, _ct, _ct, _ct, _ct, _ct, // 0AA0 - 0AAF _rv, _xx, _ct, _ct, _xx, _ct, _ct, _ct, _ct, _ct, _xx, _xx, _nu, _xx, _dr, _dl, // 0AB0 - 0ABF _dr, _db, _db, _db, _db, _da, _xx, _da, _da, _dr, _xx, _dr, _dr, _vr, _xx, _xx, // 0AC0 - 0ACF _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, // 0AD0 - 0ADF _iv, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx // 0AE0 - 0AEF }; static const IndicClassTable::CharClass oryaCharClasses[] = { _xx, _ma, _ma, _mp, _xx, _iv, _iv, _iv, _iv, _iv, _iv, _iv, _iv, _xx, _xx, _iv, // 0B00 - 0B0F _iv, _xx, _xx, _iv, _iv, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, // 0B10 - 0B1F _ct, _ct, _ct, _ct, _bb, _ct, _ct, _ct, _bb, _xx, _ct, _ct, _bb, _bb, _bb, _pb, // 0B20 - 0B2F _rv, _xx, _bb, _bb, _xx, _xx, _ct, _ct, _ct, _ct, _xx, _xx, _nu, _xx, _dr, _da, // 0B30 - 0B3F _dr, _db, _db, _db, _xx, _xx, _xx, _dl, _s1, _xx, _xx, _s2, _s3, _vr, _xx, _xx, // 0B40 - 0B4F _xx, _xx, _xx, _xx, _xx, _xx, _da, _dr, _xx, _xx, _xx, _xx, _cn, _cn, _xx, _cn, // 0B50 - 0B5F _iv, _iv, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, // 0B60 - 0B6F _xx // 0B70 }; static const IndicClassTable::CharClass tamlCharClasses[] = { _xx, _xx, _ma, _mp, _xx, _iv, _iv, _iv, _iv, _iv, _iv, _xx, _xx, _xx, _iv, _iv, // 0B80 - 0B8F _iv, _xx, _iv, _iv, _iv, _ct, _xx, _xx, _xx, _ct, _ct, _xx, _ct, _xx, _ct, _ct, // 0B90 - 0B9F _xx, _xx, _xx, _ct, _ct, _xx, _xx, _xx, _ct, _ct, _ct, _xx, _xx, _xx, _ct, _ct, // 0BA0 - 0BAF _ct, _ct, _ct, _ct, _ct, _ct, _xx, _ct, _ct, _ct, _xx, _xx, _xx, _xx, _dr, _dr, // 0BB0 - 0BBF _da, _dr, _dr, _xx, _xx, _xx, _dl, _dl, _dl, _xx, _s1, _s2, _s3, _vr, _xx, _xx, // 0BC0 - 0BCF _xx, _xx, _xx, _xx, _xx, _xx, _xx, _dr, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, // 0BD0 - 0BDF _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, // 0BE0 - 0BEF _xx, _xx, _xx // 0BF0 - 0BF2 }; // FIXME: Should some of the bb's be pb's? (KA, NA, MA, YA, VA, etc. (approx 13)) static const IndicClassTable::CharClass teluCharClasses[] = { _xx, _mp, _mp, _mp, _xx, _iv, _iv, _iv, _iv, _iv, _iv, _iv, _iv, _xx, _iv, _iv, // 0C00 - 0C0F _iv, _xx, _iv, _iv, _iv, _bb, _bb, _bb, _bb, _bb, _bb, _bb, _bb, _bb, _bb, _bb, // 0C10 - 0C1F _bb, _bb, _bb, _bb, _bb, _bb, _bb, _bb, _bb, _xx, _bb, _bb, _bb, _bb, _bb, _bb, // 0C20 - 0C2F _bb, _ct, _bb, _bb, _xx, _bb, _bb, _bb, _bb, _bb, _xx, _xx, _xx, _xx, _da, _da, // 0C30 - 0C3F _da, _dr, _dr, _dr, _dr, _xx, _da, _da, _s1, _xx, _da, _da, _da, _vr, _xx, _xx, // 0C40 - 0C4F _xx, _xx, _xx, _xx, _xx, _da, _db, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, // 0C50 - 0C5F _iv, _iv, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx // 0C60 - 0C6F }; // FIXME: is 0CD5 a dr or an lm?? static const IndicClassTable::CharClass kndaCharClasses[] = { _xx, _xx, _mp, _mp, _xx, _iv, _iv, _iv, _iv, _iv, _iv, _iv, _iv, _iv, _xx, _iv, // 0C80 - 0C8F _iv, _xx, _iv, _iv, _iv, _bb, _bb, _bb, _bb, _bb, _bb, _bb, _bb, _bb, _bb, _bb, // 0C90 - 0C9F _bb, _bb, _bb, _bb, _bb, _bb, _bb, _bb, _bb, _xx, _bb, _bb, _bb, _bb, _bb, _bb, // 0CA0 - 0CAF _rb, _ct, _bb, _bb, _xx, _bb, _bb, _bb, _bb, _bb, _xx, _xx, _xx, _xx, _dr, _da, // 0CB0 - 0CBF _s1, _dr, _dr, _dr, _dr, _xx, _da, _s2, _s3, _xx, _s4, _s5, _da, _vr, _xx, _xx, // 0CC0 - 0CCF _xx, _xx, _xx, _xx, _xx, _lm, _dr, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _ct, _xx, // 0CD0 - 0CDF _iv, _iv, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx // 0CE0 - 0CEF }; // FIXME: this is correct for old-style Malayalam (MAL) but not for reformed Malayalam (MLR) // FIXME: should there be a REPH for old-style Malayalam? static const IndicClassTable::CharClass mlymCharClasses[] = { _xx, _xx, _mp, _mp, _xx, _iv, _iv, _iv, _iv, _iv, _iv, _iv, _iv, _xx, _iv, _iv, // 0D00 - 0D0F _iv, _xx, _iv, _iv, _iv, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _ct, _bb, // 0D10 - 0D1F _ct, _ct, _ct, _bb, _ct, _bb, _bb, _ct, _ct, _xx, _ct, _ct, _ct, _ct, _ct, _ct, // 0D20 - 0D2F _pb, _cn, _bb, _ct, _ct, _pb, _ct, _ct, _ct, _ct, _xx, _xx, _xx, _xx, _dr, _dr, // 0D30 - 0D3F _dr, _db, _db, _db, _xx, _xx, _dl, _dl, _dl, _xx, _s1, _s2, _s3, _vr, _xx, _xx, // 0D40 - 0D4F _xx, _xx, _xx, _xx, _xx, _xx, _xx, _dr, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, // 0D50 - 0D5F _iv, _iv, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx, _xx // 0D60 - 0D6F }; // // Split matra tables // static const SplitMatra bengSplitTable[] = {{0x09C7, 0x09BE}, {0x09C7, 0x09D7}}; static const SplitMatra oryaSplitTable[] = {{0x0B47, 0x0B56}, {0x0B47, 0x0B3E}, {0x0B47, 0x0B57}}; static const SplitMatra tamlSplitTable[] = {{0x0BC6, 0x0BBE}, {0x0BC7, 0x0BBE}, {0x0BC6, 0x0BD7}}; static const SplitMatra teluSplitTable[] = {{0x0C46, 0x0C56}}; static const SplitMatra kndaSplitTable[] = {{0x0CBF, 0x0CD5}, {0x0CC6, 0x0CD5}, {0x0CC6, 0x0CD6}, {0x0CC6, 0x0CC2}, {0x0CC6, 0x0CC2, 0x0CD5}}; static const SplitMatra mlymSplitTable[] = {{0x0D46, 0x0D3E}, {0x0D47, 0x0D3E}, {0x0D46, 0x0D57}}; // // Script Flags // // FIXME: post 'GSUB' reordering of MATRA_PRE's for Malayalam and Tamil // FIXME: reformed Malayalam needs to reorder VATTU to before base glyph... // FIXME: eyelash RA only for Devanagari?? #define DEVA_SCRIPT_FLAGS (IndicClassTable::SF_EYELASH_RA | IndicClassTable::SF_NO_POST_BASE_LIMIT) #define BENG_SCRIPT_FLAGS (IndicClassTable::SF_REPH_AFTER_BELOW | IndicClassTable::SF_NO_POST_BASE_LIMIT) #define PUNJ_SCRIPT_FLAGS (IndicClassTable::SF_NO_POST_BASE_LIMIT) #define GUJR_SCRIPT_FLAGS (IndicClassTable::SF_NO_POST_BASE_LIMIT) #define ORYA_SCRIPT_FLAGS (IndicClassTable::SF_REPH_AFTER_BELOW | IndicClassTable::SF_NO_POST_BASE_LIMIT) #define TAML_SCRIPT_FLAGS (IndicClassTable::SF_MPRE_FIXUP | IndicClassTable::SF_NO_POST_BASE_LIMIT) #define TELU_SCRIPT_FLAGS (IndicClassTable::SF_MATRAS_AFTER_BASE | 3) #define KNDA_SCRIPT_FLAGS (IndicClassTable::SF_MATRAS_AFTER_BASE | 3) #define MLYM_SCRIPT_FLAGS (IndicClassTable::SF_NO_POST_BASE_LIMIT) // // Indic Class Tables // static const IndicClassTable devaClassTable = {0x0900, 0x0970, 2, DEVA_SCRIPT_FLAGS, devaCharClasses, NULL}; static const IndicClassTable bengClassTable = {0x0980, 0x09FA, 3, BENG_SCRIPT_FLAGS, bengCharClasses, bengSplitTable}; static const IndicClassTable punjClassTable = {0x0A00, 0x0A74, 2, PUNJ_SCRIPT_FLAGS, punjCharClasses, NULL}; static const IndicClassTable gujrClassTable = {0x0A80, 0x0AEF, 2, GUJR_SCRIPT_FLAGS, gujrCharClasses, NULL}; static const IndicClassTable oryaClassTable = {0x0B00, 0x0B70, 3, ORYA_SCRIPT_FLAGS, oryaCharClasses, oryaSplitTable}; static const IndicClassTable tamlClassTable = {0x0B80, 0x0BF2, 3, TAML_SCRIPT_FLAGS, tamlCharClasses, tamlSplitTable}; static const IndicClassTable teluClassTable = {0x0C00, 0x0C6F, 3, TELU_SCRIPT_FLAGS, teluCharClasses, teluSplitTable}; static const IndicClassTable kndaClassTable = {0x0C80, 0x0CEF, 4, KNDA_SCRIPT_FLAGS, kndaCharClasses, kndaSplitTable}; static const IndicClassTable mlymClassTable = {0x0D00, 0x0D6F, 3, MLYM_SCRIPT_FLAGS, mlymCharClasses, mlymSplitTable}; // // IndicClassTable addresses // static const IndicClassTable *indicClassTables[] = { NULL, /* 'zyyy' (COMMON) */ NULL, /* 'qaai' (INHERITED) */ NULL, /* 'arab' (ARABIC) */ NULL, /* 'armn' (ARMENIAN) */ &bengClassTable, /* 'beng' (BENGALI) */ NULL, /* 'bopo' (BOPOMOFO) */ NULL, /* 'cher' (CHEROKEE) */ NULL, /* 'qaac' (COPTIC) */ NULL, /* 'cyrl' (CYRILLIC) */ NULL, /* 'dsrt' (DESERET) */ &devaClassTable, /* 'deva' (DEVANAGARI) */ NULL, /* 'ethi' (ETHIOPIC) */ NULL, /* 'geor' (GEORGIAN) */ NULL, /* 'goth' (GOTHIC) */ NULL, /* 'grek' (GREEK) */ &gujrClassTable, /* 'gujr' (GUJARATI) */ &punjClassTable, /* 'guru' (GURMUKHI) */ NULL, /* 'hani' (HAN) */ NULL, /* 'hang' (HANGUL) */ NULL, /* 'hebr' (HEBREW) */ NULL, /* 'hira' (HIRAGANA) */ &kndaClassTable, /* 'knda' (KANNADA) */ NULL, /* 'kata' (KATAKANA) */ NULL, /* 'khmr' (KHMER) */ NULL, /* 'laoo' (LAO) */ NULL, /* 'latn' (LATIN) */ &mlymClassTable, /* 'mlym' (MALAYALAM) */ NULL, /* 'mong' (MONGOLIAN) */ NULL, /* 'mymr' (MYANMAR) */ NULL, /* 'ogam' (OGHAM) */ NULL, /* 'ital' (OLD-ITALIC) */ &oryaClassTable, /* 'orya' (ORIYA) */ NULL, /* 'runr' (RUNIC) */ NULL, /* 'sinh' (SINHALA) */ NULL, /* 'syrc' (SYRIAC) */ &tamlClassTable, /* 'taml' (TAMIL) */ &teluClassTable, /* 'telu' (TELUGU) */ NULL, /* 'thaa' (THAANA) */ NULL, /* 'thai' (THAI) */ NULL, /* 'tibt' (TIBETAN) */ NULL, /* 'cans' (CANADIAN-ABORIGINAL) */ NULL /* 'yiii' (YI) */ }; IndicClassTable::CharClass IndicClassTable::getCharClass(LEUnicode ch) const { if (ch == C_SIGN_ZWJ) { return CF_CONSONANT | CC_ZERO_WIDTH_MARK; } if (ch == C_SIGN_ZWNJ) { return CC_ZERO_WIDTH_MARK; } if (ch < firstChar || ch > lastChar) { return CC_RESERVED; } return classTable[ch - firstChar]; } const IndicClassTable *IndicClassTable::getScriptClassTable(le_int32 scriptCode) { if (scriptCode < 0 || scriptCode >= scriptCodeCount) { return NULL; } return indicClassTables[scriptCode]; } le_int32 IndicReordering::getWorstCaseExpansion(le_int32 scriptCode) { const IndicClassTable *classTable = IndicClassTable::getScriptClassTable(scriptCode); if (classTable == NULL) { return 1; } return classTable->getWorstCaseExpansion(); } U_NAMESPACE_END