/*
* Copyright (C) 2007 Apple Computer, Inc.
*
* Portions are Copyright (C) 1998 Netscape Communications Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Alternatively, the contents of this file may be used under the terms
* of either the Mozilla Public License Version 1.1, found at
* http://www.mozilla.org/MPL/ (the "MPL") or the GNU General Public
* License Version 2.0, found at http://www.fsf.org/copyleft/gpl.html
* (the "GPL"), in which case the provisions of the MPL or the GPL are
* applicable instead of those above. If you wish to allow use of your
* version of this file only under the terms of one of those two
* licenses (the MPL or the GPL) and not to allow others to use your
* version of this file under the LGPL, indicate your decision by
* deletingthe provisions above and replace them with the notice and
* other provisions required by the MPL or the GPL, as the case may be.
* If you do not delete the provisions above, a recipient may use your
* version of this file under any of the LGPL, the MPL or the GPL.
*/
#include "config.h"
#include "platform/text/UnicodeRange.h"
namespace WebCore {
// This table depends on unicode range definitions.
// Each item's index must correspond to a unicode range value
// eg. x-cyrillic = LangGroupTable[cRangeCyrillic]
static const char* const gUnicodeRangeToLangGroupTable[] =
{
"x-cyrillic",
"el",
"tr",
"he",
"ar",
"x-baltic",
"th",
"ko",
"ja",
"zh-CN",
"zh-TW",
"x-devanagari",
"x-tamil",
"x-armn",
"x-beng",
"x-cans",
"x-ethi",
"x-geor",
"x-gujr",
"x-guru",
"x-khmr",
"x-mlym"
};
/**********************************************************************
* Unicode subranges as defined in unicode 3.0
* x-western, x-central-euro, tr, x-baltic -> 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
*********************************************************************/
static const unsigned cNumSubTables = 9;
static const unsigned cSubTableSize = 16;
static const unsigned char gUnicodeSubrangeTable[cNumSubTables][cSubTableSize] =
{
{ // table for X---
cRangeTableBase+1, //u0xxx
cRangeTableBase+2, //u1xxx
cRangeTableBase+3, //u2xxx
cRangeSetCJK, //u3xxx
cRangeSetCJK, //u4xxx
cRangeSetCJK, //u5xxx
cRangeSetCJK, //u6xxx
cRangeSetCJK, //u7xxx
cRangeSetCJK, //u8xxx
cRangeSetCJK, //u9xxx
cRangeTableBase+4, //uaxxx
cRangeKorean, //ubxxx
cRangeKorean, //ucxxx
cRangeTableBase+5, //udxxx
cRangePrivate, //uexxx
cRangeTableBase+6 //ufxxx
},
{ //table for 0X--
cRangeSetLatin, //u00xx
cRangeSetLatin, //u01xx
cRangeSetLatin, //u02xx
cRangeGreek, //u03xx XXX 0300-036f is in fact cRangeCombiningDiacriticalMarks
cRangeCyrillic, //u04xx
cRangeTableBase+7, //u05xx, includes Cyrillic supplement, Hebrew, and Armenian
cRangeArabic, //u06xx
cRangeTertiaryTable, //u07xx
cRangeUnassigned, //u08xx
cRangeTertiaryTable, //u09xx
cRangeTertiaryTable, //u0axx
cRangeTertiaryTable, //u0bxx
cRangeTertiaryTable, //u0cxx
cRangeTertiaryTable, //u0dxx
cRangeTertiaryTable, //u0exx
cRangeTibetan, //u0fxx
},
{ //table for 1x--
cRangeTertiaryTable, //u10xx
cRangeKorean, //u11xx
cRangeEthiopic, //u12xx
cRangeTertiaryTable, //u13xx
cRangeCanadian, //u14xx
cRangeCanadian, //u15xx
cRangeTertiaryTable, //u16xx
cRangeKhmer, //u17xx
cRangeMongolian, //u18xx
cRangeUnassigned, //u19xx
cRangeUnassigned, //u1axx
cRangeUnassigned, //u1bxx
cRangeUnassigned, //u1cxx
cRangeUnassigned, //u1dxx
cRangeSetLatin, //u1exx
cRangeGreek, //u1fxx
},
{ //table for 2x--
cRangeSetLatin, //u20xx
cRangeSetLatin, //u21xx
cRangeMathOperators, //u22xx
cRangeMiscTechnical, //u23xx
cRangeControlOpticalEnclose, //u24xx
cRangeBoxBlockGeometrics, //u25xx
cRangeMiscSymbols, //u26xx
cRangeDingbats, //u27xx
cRangeBraillePattern, //u28xx
cRangeUnassigned, //u29xx
cRangeUnassigned, //u2axx
cRangeUnassigned, //u2bxx
cRangeUnassigned, //u2cxx
cRangeUnassigned, //u2dxx
cRangeSetCJK, //u2exx
cRangeSetCJK, //u2fxx
},
{ //table for ax--
cRangeYi, //ua0xx
cRangeYi, //ua1xx
cRangeYi, //ua2xx
cRangeYi, //ua3xx
cRangeYi, //ua4xx
cRangeUnassigned, //ua5xx
cRangeUnassigned, //ua6xx
cRangeUnassigned, //ua7xx
cRangeUnassigned, //ua8xx
cRangeUnassigned, //ua9xx
cRangeUnassigned, //uaaxx
cRangeUnassigned, //uabxx
cRangeKorean, //uacxx
cRangeKorean, //uadxx
cRangeKorean, //uaexx
cRangeKorean, //uafxx
},
{ //table for dx--
cRangeKorean, //ud0xx
cRangeKorean, //ud1xx
cRangeKorean, //ud2xx
cRangeKorean, //ud3xx
cRangeKorean, //ud4xx
cRangeKorean, //ud5xx
cRangeKorean, //ud6xx
cRangeKorean, //ud7xx
cRangeSurrogate, //ud8xx
cRangeSurrogate, //ud9xx
cRangeSurrogate, //udaxx
cRangeSurrogate, //udbxx
cRangeSurrogate, //udcxx
cRangeSurrogate, //uddxx
cRangeSurrogate, //udexx
cRangeSurrogate, //udfxx
},
{ // table for fx--
cRangePrivate, //uf0xx
cRangePrivate, //uf1xx
cRangePrivate, //uf2xx
cRangePrivate, //uf3xx
cRangePrivate, //uf4xx
cRangePrivate, //uf5xx
cRangePrivate, //uf6xx
cRangePrivate, //uf7xx
cRangePrivate, //uf8xx
cRangeSetCJK, //uf9xx
cRangeSetCJK, //ufaxx
cRangeArabic, //ufbxx, includes alphabic presentation form
cRangeArabic, //ufcxx
cRangeArabic, //ufdxx
cRangeArabic, //ufexx, includes Combining half marks,
// CJK compatibility forms,
// CJK compatibility forms,
// small form variants
cRangeTableBase+8, //uffxx, halfwidth and fullwidth forms, includes Specials
},
{ //table for 0x0500 - 0x05ff
cRangeCyrillic, //u050x
cRangeCyrillic, //u051x
cRangeCyrillic, //u052x
cRangeArmenian, //u053x
cRangeArmenian, //u054x
cRangeArmenian, //u055x
cRangeArmenian, //u056x
cRangeArmenian, //u057x
cRangeArmenian, //u058x
cRangeHebrew, //u059x
cRangeHebrew, //u05ax
cRangeHebrew, //u05bx
cRangeHebrew, //u05cx
cRangeHebrew, //u05dx
cRangeHebrew, //u05ex
cRangeHebrew, //u05fx
},
{ //table for 0xff00 - 0xffff
cRangeSetCJK, //uff0x, fullwidth latin
cRangeSetCJK, //uff1x, fullwidth latin
cRangeSetCJK, //uff2x, fullwidth latin
cRangeSetCJK, //uff3x, fullwidth latin
cRangeSetCJK, //uff4x, fullwidth latin
cRangeSetCJK, //uff5x, fullwidth latin
cRangeSetCJK, //uff6x, halfwidth katakana
cRangeSetCJK, //uff7x, halfwidth katakana
cRangeSetCJK, //uff8x, halfwidth katakana
cRangeSetCJK, //uff9x, halfwidth katakana
cRangeSetCJK, //uffax, halfwidth hangul jamo
cRangeSetCJK, //uffbx, halfwidth hangul jamo
cRangeSetCJK, //uffcx, halfwidth hangul jamo
cRangeSetCJK, //uffdx, halfwidth hangul jamo
cRangeSetCJK, //uffex, fullwidth symbols
cRangeSpecials, //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.
static const unsigned cTertiaryTableSize = ((0x1700 - 0x0700) / 0x80);
static const unsigned char gUnicodeTertiaryRangeTable[cTertiaryTableSize] =
{ //table for 0x0700 - 0x1600
cRangeSyriac, //u070x
cRangeThaana, //u078x
cRangeUnassigned, //u080x place holder(resolved in the 2ndary tab.)
cRangeUnassigned, //u088x place holder(resolved in the 2ndary tab.)
cRangeDevanagari, //u090x
cRangeBengali, //u098x
cRangeGurmukhi, //u0a0x
cRangeGujarati, //u0a8x
cRangeOriya, //u0b0x
cRangeTamil, //u0b8x
cRangeTelugu, //u0c0x
cRangeKannada, //u0c8x
cRangeMalayalam, //u0d0x
cRangeSinhala, //u0d8x
cRangeThai, //u0e0x
cRangeLao, //u0e8x
cRangeTibetan, //u0f0x place holder(resolved in the 2ndary tab.)
cRangeTibetan, //u0f8x place holder(resolved in the 2ndary tab.)
cRangeMyanmar, //u100x
cRangeGeorgian, //u108x
cRangeKorean, //u110x place holder(resolved in the 2ndary tab.)
cRangeKorean, //u118x place holder(resolved in the 2ndary tab.)
cRangeEthiopic, //u120x place holder(resolved in the 2ndary tab.)
cRangeEthiopic, //u128x place holder(resolved in the 2ndary tab.)
cRangeEthiopic, //u130x
cRangeCherokee, //u138x
cRangeCanadian, //u140x place holder(resolved in the 2ndary tab.)
cRangeCanadian, //u148x place holder(resolved in the 2ndary tab.)
cRangeCanadian, //u150x place holder(resolved in the 2ndary tab.)
cRangeCanadian, //u158x place holder(resolved in the 2ndary tab.)
cRangeCanadian, //u160x
cRangeOghamRunic, //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. Future adoption of this method 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.
unsigned findCharUnicodeRange(UChar32 ch)
{
if (ch >= 0xFFFF)
return 0;
unsigned range;
//search the first table
range = gUnicodeSubrangeTable[0][ch >> 12];
if (range < cRangeTableBase)
// we try to get a specific range
return range;
// otherwise, we have one more table to look at
range = gUnicodeSubrangeTable[range - cRangeTableBase][(ch & 0x0f00) >> 8];
if (range < cRangeTableBase)
return range;
if (range < cRangeTertiaryTable)
return gUnicodeSubrangeTable[range - cRangeTableBase][(ch & 0x00f0) >> 4];
// Yet another table to look at : U+0700 - U+16FF : 128 code point blocks
return gUnicodeTertiaryRangeTable[(ch - 0x0700) >> 7];
}
const char* langGroupFromUnicodeRange(unsigned char unicodeRange)
{
if (cRangeSpecificItemNum > unicodeRange)
return gUnicodeRangeToLangGroupTable[unicodeRange];
return 0;
}
}