/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #include "nsUnicodeRange.h" #include "nsGkAtoms.h" #include "mozilla/NullPtr.h" // This table depends on unicode range definitions. // Each item's index must correspond unicode range value // eg. x-cyrillic = LangGroupTable[kRangeCyrillic] static nsIAtom **gUnicodeRangeToLangGroupAtomTable[] = { &nsGkAtoms::x_cyrillic, &nsGkAtoms::el_, &nsGkAtoms::he, &nsGkAtoms::ar, &nsGkAtoms::th, &nsGkAtoms::ko, &nsGkAtoms::Japanese, &nsGkAtoms::zh_cn, &nsGkAtoms::zh_tw, &nsGkAtoms::x_devanagari, &nsGkAtoms::x_tamil, &nsGkAtoms::x_armn, &nsGkAtoms::x_beng, &nsGkAtoms::x_cans, &nsGkAtoms::x_ethi, &nsGkAtoms::x_geor, &nsGkAtoms::x_gujr, &nsGkAtoms::x_guru, &nsGkAtoms::x_khmr, &nsGkAtoms::x_mlym, &nsGkAtoms::x_orya, &nsGkAtoms::x_telu, &nsGkAtoms::x_knda, &nsGkAtoms::x_sinh, &nsGkAtoms::x_tibt }; /********************************************************************** * Unicode subranges as defined in unicode 3.0 * x-western -> latin * 0000 - 036f * 1e00 - 1eff * 2000 - 206f (general punctuation) * 20a0 - 20cf (currency symbols) * 2100 - 214f (letterlike symbols) * 2150 - 218f (Number Forms) * el -> greek * 0370 - 03ff * 1f00 - 1fff * x-cyrillic -> cyrillic * 0400 - 04ff * he -> hebrew * 0590 - 05ff * ar -> arabic * 0600 - 06ff * fb50 - fdff (arabic presentation forms) * fe70 - feff (arabic presentation forms b) * th - thai * 0e00 - 0e7f * ko -> korean * ac00 - d7af (hangul Syllables) * 1100 - 11ff (jamo) * 3130 - 318f (hangul compatibility jamo) * ja * 3040 - 309f (hiragana) * 30a0 - 30ff (katakana) * zh-CN * zh-TW * * CJK * 3100 - 312f (bopomofo) * 31a0 - 31bf (bopomofo extended) * 3000 - 303f (CJK Symbols and Punctuation) * 2e80 - 2eff (CJK radicals supplement) * 2f00 - 2fdf (Kangxi Radicals) * 2ff0 - 2fff (Ideographic Description Characters) * 3190 - 319f (kanbun) * 3200 - 32ff (Enclosed CJK letters and Months) * 3300 - 33ff (CJK compatibility) * 3400 - 4dbf (CJK Unified Ideographs Extension A) * 4e00 - 9faf (CJK Unified Ideographs) * f900 - fa5f (CJK Compatibility Ideographs) * fe30 - fe4f (CJK compatibility Forms) * ff00 - ffef (halfwidth and fullwidth forms) * * Armenian * 0530 - 058f * Sriac * 0700 - 074f * Thaana * 0780 - 07bf * Devanagari * 0900 - 097f * Bengali * 0980 - 09ff * Gurmukhi * 0a00 - 0a7f * Gujarati * 0a80 - 0aff * Oriya * 0b00 - 0b7f * Tamil * 0b80 - 0bff * Telugu * 0c00 - 0c7f * Kannada * 0c80 - 0cff * Malayalam * 0d00 - 0d7f * Sinhala * 0d80 - 0def * Lao * 0e80 - 0eff * Tibetan * 0f00 - 0fbf * Myanmar * 1000 - 109f * Georgian * 10a0 - 10ff * Ethiopic * 1200 - 137f * Cherokee * 13a0 - 13ff * Canadian Aboriginal Syllabics * 1400 - 167f * Ogham * 1680 - 169f * Runic * 16a0 - 16ff * Khmer * 1780 - 17ff * Mongolian * 1800 - 18af * Misc - superscripts and subscripts * 2070 - 209f * Misc - Combining Diacritical Marks for Symbols * 20d0 - 20ff * Misc - Arrows * 2190 - 21ff * Misc - Mathematical Operators * 2200 - 22ff * Misc - Miscellaneous Technical * 2300 - 23ff * Misc - Control picture * 2400 - 243f * Misc - Optical character recognition * 2440 - 2450 * Misc - Enclose Alphanumerics * 2460 - 24ff * Misc - Box Drawing * 2500 - 257f * Misc - Block Elements * 2580 - 259f * Misc - Geometric Shapes * 25a0 - 25ff * Misc - Miscellaneous Symbols * 2600 - 267f * Misc - Dingbats * 2700 - 27bf * Misc - Braille Patterns * 2800 - 28ff * Yi Syllables * a000 - a48f * Yi radicals * a490 - a4cf * Alphabetic Presentation Forms * fb00 - fb4f * Misc - Combining half Marks * fe20 - fe2f * Misc - small form variants * fe50 - fe6f * Misc - Specials * fff0 - ffff *********************************************************************/ #define NUM_OF_SUBTABLES 10 #define SUBTABLE_SIZE 16 static const uint8_t gUnicodeSubrangeTable[NUM_OF_SUBTABLES][SUBTABLE_SIZE] = { { // table for X--- kRangeTableBase+1, //u0xxx kRangeTableBase+2, //u1xxx kRangeTableBase+3, //u2xxx kRangeSetCJK, //u3xxx kRangeSetCJK, //u4xxx kRangeSetCJK, //u5xxx kRangeSetCJK, //u6xxx kRangeSetCJK, //u7xxx kRangeSetCJK, //u8xxx kRangeSetCJK, //u9xxx kRangeTableBase+4, //uaxxx kRangeKorean, //ubxxx kRangeKorean, //ucxxx kRangeTableBase+5, //udxxx kRangePrivate, //uexxx kRangeTableBase+6 //ufxxx }, { //table for 0X-- kRangeSetLatin, //u00xx kRangeSetLatin, //u01xx kRangeSetLatin, //u02xx kRangeGreek, //u03xx XXX 0300-036f is in fact kRangeCombiningDiacriticalMarks kRangeCyrillic, //u04xx kRangeTableBase+7, //u05xx, includes Cyrillic supplement, Hebrew, and Armenian kRangeArabic, //u06xx kRangeTertiaryTable, //u07xx kRangeUnassigned, //u08xx kRangeTertiaryTable, //u09xx kRangeTertiaryTable, //u0axx kRangeTertiaryTable, //u0bxx kRangeTertiaryTable, //u0cxx kRangeTertiaryTable, //u0dxx kRangeTertiaryTable, //u0exx kRangeTibetan //u0fxx }, { //table for 1x-- kRangeTertiaryTable, //u10xx kRangeKorean, //u11xx kRangeEthiopic, //u12xx kRangeTertiaryTable, //u13xx kRangeCanadian, //u14xx kRangeCanadian, //u15xx kRangeTertiaryTable, //u16xx kRangeKhmer, //u17xx kRangeMongolian, //u18xx kRangeUnassigned, //u19xx kRangeUnassigned, //u1axx kRangeUnassigned, //u1bxx kRangeUnassigned, //u1cxx kRangeUnassigned, //u1dxx kRangeSetLatin, //u1exx kRangeGreek //u1fxx }, { //table for 2x-- kRangeSetLatin, //u20xx kRangeSetLatin, //u21xx kRangeMathOperators, //u22xx kRangeMiscTechnical, //u23xx kRangeControlOpticalEnclose, //u24xx kRangeBoxBlockGeometrics, //u25xx kRangeMiscSymbols, //u26xx kRangeDingbats, //u27xx kRangeBraillePattern, //u28xx kRangeUnassigned, //u29xx kRangeUnassigned, //u2axx kRangeUnassigned, //u2bxx kRangeUnassigned, //u2cxx kRangeUnassigned, //u2dxx kRangeSetCJK, //u2exx kRangeSetCJK //u2fxx }, { //table for ax-- kRangeYi, //ua0xx kRangeYi, //ua1xx kRangeYi, //ua2xx kRangeYi, //ua3xx kRangeYi, //ua4xx kRangeUnassigned, //ua5xx kRangeUnassigned, //ua6xx kRangeUnassigned, //ua7xx kRangeUnassigned, //ua8xx kRangeUnassigned, //ua9xx kRangeUnassigned, //uaaxx kRangeUnassigned, //uabxx kRangeKorean, //uacxx kRangeKorean, //uadxx kRangeKorean, //uaexx kRangeKorean //uafxx }, { //table for dx-- kRangeKorean, //ud0xx kRangeKorean, //ud1xx kRangeKorean, //ud2xx kRangeKorean, //ud3xx kRangeKorean, //ud4xx kRangeKorean, //ud5xx kRangeKorean, //ud6xx kRangeKorean, //ud7xx kRangeSurrogate, //ud8xx kRangeSurrogate, //ud9xx kRangeSurrogate, //udaxx kRangeSurrogate, //udbxx kRangeSurrogate, //udcxx kRangeSurrogate, //uddxx kRangeSurrogate, //udexx kRangeSurrogate //udfxx }, { // table for fx-- kRangePrivate, //uf0xx kRangePrivate, //uf1xx kRangePrivate, //uf2xx kRangePrivate, //uf3xx kRangePrivate, //uf4xx kRangePrivate, //uf5xx kRangePrivate, //uf6xx kRangePrivate, //uf7xx kRangePrivate, //uf8xx kRangeSetCJK, //uf9xx kRangeSetCJK, //ufaxx kRangeArabic, //ufbxx, includes alphabic presentation form kRangeArabic, //ufcxx kRangeArabic, //ufdxx kRangeTableBase+8, //ufexx kRangeTableBase+9 //uffxx, halfwidth and fullwidth forms, includes Specials }, { //table for 0x0500 - 0x05ff kRangeCyrillic, //u050x kRangeCyrillic, //u051x kRangeCyrillic, //u052x kRangeArmenian, //u053x kRangeArmenian, //u054x kRangeArmenian, //u055x kRangeArmenian, //u056x kRangeArmenian, //u057x kRangeArmenian, //u058x kRangeHebrew, //u059x kRangeHebrew, //u05ax kRangeHebrew, //u05bx kRangeHebrew, //u05cx kRangeHebrew, //u05dx kRangeHebrew, //u05ex kRangeHebrew //u05fx }, { //table for 0xfe00 - 0xfeff kRangeSetCJK, //ufe0x kRangeSetCJK, //ufe1x kRangeSetCJK, //ufe2x kRangeSetCJK, //ufe3x kRangeSetCJK, //ufe4x kRangeSetCJK, //ufe5x kRangeSetCJK, //ufe6x kRangeArabic, //ufe7x kRangeArabic, //ufe8x kRangeArabic, //ufe9x kRangeArabic, //ufeax kRangeArabic, //ufebx kRangeArabic, //ufecx kRangeArabic, //ufedx kRangeArabic, //ufeex kRangeArabic //ufefx }, { //table for 0xff00 - 0xffff kRangeSetCJK, //uff0x, fullwidth latin kRangeSetCJK, //uff1x, fullwidth latin kRangeSetCJK, //uff2x, fullwidth latin kRangeSetCJK, //uff3x, fullwidth latin kRangeSetCJK, //uff4x, fullwidth latin kRangeSetCJK, //uff5x, fullwidth latin kRangeSetCJK, //uff6x, halfwidth katakana kRangeSetCJK, //uff7x, halfwidth katakana kRangeSetCJK, //uff8x, halfwidth katakana kRangeSetCJK, //uff9x, halfwidth katakana kRangeSetCJK, //uffax, halfwidth hangul jamo kRangeSetCJK, //uffbx, halfwidth hangul jamo kRangeSetCJK, //uffcx, halfwidth hangul jamo kRangeSetCJK, //uffdx, halfwidth hangul jamo kRangeSetCJK, //uffex, fullwidth symbols kRangeSpecials, //ufffx, Specials }, }; // Most scripts between U+0700 and U+16FF are assigned a chunk of 128 (0x80) // code points so that the number of entries in the tertiary range // table for that range is obtained by dividing (0x1700 - 0x0700) by 128. // Exceptions: Ethiopic, Tibetan, Hangul Jamo and Canadian aboriginal // syllabaries take multiple chunks and Ogham and Runic share a single chunk. #define TERTIARY_TABLE_SIZE ((0x1700 - 0x0700) / 0x80) static const uint8_t gUnicodeTertiaryRangeTable[TERTIARY_TABLE_SIZE] = { //table for 0x0700 - 0x1600 kRangeSyriac, //u070x kRangeThaana, //u078x kRangeUnassigned, //u080x place holder(resolved in the 2ndary tab.) kRangeUnassigned, //u088x place holder(resolved in the 2ndary tab.) kRangeDevanagari, //u090x kRangeBengali, //u098x kRangeGurmukhi, //u0a0x kRangeGujarati, //u0a8x kRangeOriya, //u0b0x kRangeTamil, //u0b8x kRangeTelugu, //u0c0x kRangeKannada, //u0c8x kRangeMalayalam, //u0d0x kRangeSinhala, //u0d8x kRangeThai, //u0e0x kRangeLao, //u0e8x kRangeTibetan, //u0f0x place holder(resolved in the 2ndary tab.) kRangeTibetan, //u0f8x place holder(resolved in the 2ndary tab.) kRangeMyanmar, //u100x kRangeGeorgian, //u108x kRangeKorean, //u110x place holder(resolved in the 2ndary tab.) kRangeKorean, //u118x place holder(resolved in the 2ndary tab.) kRangeEthiopic, //u120x place holder(resolved in the 2ndary tab.) kRangeEthiopic, //u128x place holder(resolved in the 2ndary tab.) kRangeEthiopic, //u130x kRangeCherokee, //u138x kRangeCanadian, //u140x place holder(resolved in the 2ndary tab.) kRangeCanadian, //u148x place holder(resolved in the 2ndary tab.) kRangeCanadian, //u150x place holder(resolved in the 2ndary tab.) kRangeCanadian, //u158x place holder(resolved in the 2ndary tab.) kRangeCanadian, //u160x kRangeOghamRunic //u168x this contains two scripts, Ogham & Runic }; // A two level index is almost enough for locating a range, with the // exception of u03xx and u05xx. Since we don't really care about range for // combining diacritical marks in our font application, they are // not discriminated further. But future adoption of this module for other use // should be aware of this limitation. The implementation can be extended if // there is such a need. // For Indic, Southeast Asian scripts and some other scripts between // U+0700 and U+16FF, it's extended to the third level. uint32_t FindCharUnicodeRange(uint32_t ch) { uint32_t range; // aggregate ranges for non-BMP codepoints if (ch > 0xFFFF) { uint32_t p = (ch >> 16); if (p == 1) { return kRangeSMP; } else if (p == 2) { return kRangeSetCJK; } return kRangeHigherPlanes; } // lookup explicit range for BMP codepoints // first general range range = gUnicodeSubrangeTable[0][ch >> 12]; // if general range is good enough, return that if (range < kRangeTableBase) // we try to get a specific range return range; // otherwise, use subrange tables range = gUnicodeSubrangeTable[range - kRangeTableBase][(ch & 0x0f00) >> 8]; if (range < kRangeTableBase) return range; if (range < kRangeTertiaryTable) return gUnicodeSubrangeTable[range - kRangeTableBase][(ch & 0x00f0) >> 4]; // Yet another table to look at : U+0700 - U+16FF : 128 code point blocks return gUnicodeTertiaryRangeTable[(ch - 0x0700) >> 7]; } nsIAtom *LangGroupFromUnicodeRange(uint8_t unicodeRange) { if (kRangeSpecificItemNum > unicodeRange) { nsIAtom **atom = gUnicodeRangeToLangGroupAtomTable[unicodeRange]; return *atom; } return nullptr; }