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/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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/*
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*
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7486
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* (C) Copyright IBM Corp. 1998-2009 - All Rights Reserved
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2
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*
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*/
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#include "LETypes.h"
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#include "OpenTypeTables.h"
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#include "OpenTypeUtilities.h"
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#include "IndicReordering.h"
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#include "LEGlyphStorage.h"
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#include "MPreFixups.h"
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3935
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U_NAMESPACE_BEGIN
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#define loclFeatureTag LE_LOCL_FEATURE_TAG
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2
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#define initFeatureTag LE_INIT_FEATURE_TAG
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#define nuktFeatureTag LE_NUKT_FEATURE_TAG
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#define akhnFeatureTag LE_AKHN_FEATURE_TAG
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#define rphfFeatureTag LE_RPHF_FEATURE_TAG
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#define rkrfFeatureTag LE_RKRF_FEATURE_TAG
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2
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#define blwfFeatureTag LE_BLWF_FEATURE_TAG
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#define halfFeatureTag LE_HALF_FEATURE_TAG
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#define pstfFeatureTag LE_PSTF_FEATURE_TAG
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#define vatuFeatureTag LE_VATU_FEATURE_TAG
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#define presFeatureTag LE_PRES_FEATURE_TAG
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#define blwsFeatureTag LE_BLWS_FEATURE_TAG
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#define abvsFeatureTag LE_ABVS_FEATURE_TAG
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#define pstsFeatureTag LE_PSTS_FEATURE_TAG
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#define halnFeatureTag LE_HALN_FEATURE_TAG
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#define cjctFeatureTag LE_CJCT_FEATURE_TAG
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2
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#define blwmFeatureTag LE_BLWM_FEATURE_TAG
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#define abvmFeatureTag LE_ABVM_FEATURE_TAG
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#define distFeatureTag LE_DIST_FEATURE_TAG
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#define caltFeatureTag LE_CALT_FEATURE_TAG
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#define kernFeatureTag LE_KERN_FEATURE_TAG
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2
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#define loclFeatureMask 0x80000000UL
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#define rphfFeatureMask 0x40000000UL
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#define blwfFeatureMask 0x20000000UL
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#define halfFeatureMask 0x10000000UL
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#define pstfFeatureMask 0x08000000UL
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#define nuktFeatureMask 0x04000000UL
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#define akhnFeatureMask 0x02000000UL
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#define vatuFeatureMask 0x01000000UL
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#define presFeatureMask 0x00800000UL
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#define blwsFeatureMask 0x00400000UL
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#define abvsFeatureMask 0x00200000UL
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#define pstsFeatureMask 0x00100000UL
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#define halnFeatureMask 0x00080000UL
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#define blwmFeatureMask 0x00040000UL
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#define abvmFeatureMask 0x00020000UL
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#define distFeatureMask 0x00010000UL
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#define initFeatureMask 0x00008000UL
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#define cjctFeatureMask 0x00004000UL
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#define rkrfFeatureMask 0x00002000UL
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#define caltFeatureMask 0x00001000UL
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#define kernFeatureMask 0x00000800UL
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// Syllable structure bits
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#define baseConsonantMask 0x00000400UL
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#define consonantMask 0x00000200UL
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#define halfConsonantMask 0x00000100UL
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#define rephConsonantMask 0x00000080UL
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#define matraMask 0x00000040UL
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#define vowelModifierMask 0x00000020UL
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#define markPositionMask 0x00000018UL
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#define postBasePosition 0x00000000UL
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#define preBasePosition 0x00000008UL
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#define aboveBasePosition 0x00000010UL
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#define belowBasePosition 0x00000018UL
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#define repositionedGlyphMask 0x00000002UL
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#define basicShapingFormsMask ( loclFeatureMask | nuktFeatureMask | akhnFeatureMask | rkrfFeatureMask | blwfFeatureMask | halfFeatureMask | vatuFeatureMask | cjctFeatureMask )
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#define positioningFormsMask ( kernFeatureMask | distFeatureMask | abvmFeatureMask | blwmFeatureMask )
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#define presentationFormsMask ( presFeatureMask | abvsFeatureMask | blwsFeatureMask | pstsFeatureMask | halnFeatureMask | caltFeatureMask )
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#define C_MALAYALAM_VOWEL_SIGN_U 0x0D41
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#define C_DOTTED_CIRCLE 0x25CC
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#define NO_GLYPH 0xFFFF
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// Some level of debate as to the proper value for MAX_CONSONANTS_PER_SYLLABLE. Ticket 5588 states that 4
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// is the magic number according to ISCII, but 5 seems to be the more consistent with XP.
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#define MAX_CONSONANTS_PER_SYLLABLE 5
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#define INDIC_BLOCK_SIZE 0x7F
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class IndicReorderingOutput : public UMemory {
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private:
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le_int32 fSyllableCount;
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le_int32 fOutIndex;
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LEUnicode *fOutChars;
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LEGlyphStorage &fGlyphStorage;
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LEUnicode fMpre;
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le_int32 fMpreIndex;
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LEUnicode fMbelow;
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le_int32 fMbelowIndex;
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129 |
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LEUnicode fMabove;
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le_int32 fMaboveIndex;
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LEUnicode fMpost;
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le_int32 fMpostIndex;
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LEUnicode fLengthMark;
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le_int32 fLengthMarkIndex;
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LEUnicode fAlLakuna;
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le_int32 fAlLakunaIndex;
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2
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FeatureMask fMatraFeatures;
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le_int32 fMPreOutIndex;
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MPreFixups *fMPreFixups;
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LEUnicode fVMabove;
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LEUnicode fVMpost;
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le_int32 fVMIndex;
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FeatureMask fVMFeatures;
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LEUnicode fSMabove;
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LEUnicode fSMbelow;
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le_int32 fSMIndex;
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FeatureMask fSMFeatures;
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LEUnicode fPreBaseConsonant;
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LEUnicode fPreBaseVirama;
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le_int32 fPBCIndex;
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FeatureMask fPBCFeatures;
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void saveMatra(LEUnicode matra, le_int32 matraIndex, IndicClassTable::CharClass matraClass)
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{
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// FIXME: check if already set, or if not a matra...
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if (IndicClassTable::isLengthMark(matraClass)) {
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fLengthMark = matra;
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fLengthMarkIndex = matraIndex;
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} else if (IndicClassTable::isAlLakuna(matraClass)) {
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fAlLakuna = matra;
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fAlLakunaIndex = matraIndex;
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2
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} else {
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switch (matraClass & CF_POS_MASK) {
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case CF_POS_BEFORE:
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fMpre = matra;
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fMpreIndex = matraIndex;
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break;
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case CF_POS_BELOW:
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fMbelow = matra;
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fMbelowIndex = matraIndex;
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break;
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case CF_POS_ABOVE:
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fMabove = matra;
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fMaboveIndex = matraIndex;
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break;
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case CF_POS_AFTER:
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fMpost = matra;
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fMpostIndex = matraIndex;
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break;
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default:
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// can't get here...
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break;
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}
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}
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}
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public:
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IndicReorderingOutput(LEUnicode *outChars, LEGlyphStorage &glyphStorage, MPreFixups *mpreFixups)
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: fSyllableCount(0), fOutIndex(0), fOutChars(outChars), fGlyphStorage(glyphStorage),
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fMpre(0), fMpreIndex(0), fMbelow(0), fMbelowIndex(0), fMabove(0), fMaboveIndex(0),
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fMpost(0), fMpostIndex(0), fLengthMark(0), fLengthMarkIndex(0), fAlLakuna(0), fAlLakunaIndex(0),
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2
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fMatraFeatures(0), fMPreOutIndex(-1), fMPreFixups(mpreFixups),
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fVMabove(0), fVMpost(0), fVMIndex(0), fVMFeatures(0),
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7486
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fSMabove(0), fSMbelow(0), fSMIndex(0), fSMFeatures(0),
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fPreBaseConsonant(0), fPreBaseVirama(0), fPBCIndex(0), fPBCFeatures(0)
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2
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{
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// nothing else to do...
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}
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7486
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~IndicReorderingOutput()
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2
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{
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215 |
// nothing to do here...
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}
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217 |
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218 |
void reset()
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{
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7486
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220 |
fSyllableCount += 1;
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221 |
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222 |
fMpre = fMbelow = fMabove = fMpost = fLengthMark = fAlLakuna = 0;
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2
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fMPreOutIndex = -1;
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224 |
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fVMabove = fVMpost = 0;
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fSMabove = fSMbelow = 0;
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227 |
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fPreBaseConsonant = fPreBaseVirama = 0;
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2
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}
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230 |
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231 |
void writeChar(LEUnicode ch, le_uint32 charIndex, FeatureMask charFeatures)
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232 |
{
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233 |
LEErrorCode success = LE_NO_ERROR;
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234 |
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235 |
fOutChars[fOutIndex] = ch;
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236 |
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fGlyphStorage.setCharIndex(fOutIndex, charIndex, success);
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7486
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fGlyphStorage.setAuxData(fOutIndex, charFeatures | (fSyllableCount & LE_GLYPH_GROUP_MASK), success);
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2
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239 |
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240 |
fOutIndex += 1;
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241 |
}
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242 |
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7486
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void setFeatures ( le_uint32 charIndex, FeatureMask charFeatures)
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244 |
{
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245 |
LEErrorCode success = LE_NO_ERROR;
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246 |
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247 |
fGlyphStorage.setAuxData( charIndex, charFeatures, success );
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248 |
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249 |
}
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250 |
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251 |
FeatureMask getFeatures ( le_uint32 charIndex )
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252 |
{
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253 |
LEErrorCode success = LE_NO_ERROR;
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254 |
return fGlyphStorage.getAuxData(charIndex,success);
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255 |
}
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256 |
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22330
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257 |
void decomposeReorderMatras ( const IndicClassTable *classTable, le_int32 beginSyllable, le_int32 nextSyllable, le_int32 inv_count ) {
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258 |
le_int32 i;
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7486
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259 |
LEErrorCode success = LE_NO_ERROR;
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260 |
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261 |
for ( i = beginSyllable ; i < nextSyllable ; i++ ) {
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262 |
if ( classTable->isMatra(fOutChars[i+inv_count])) {
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263 |
IndicClassTable::CharClass matraClass = classTable->getCharClass(fOutChars[i+inv_count]);
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264 |
if ( classTable->isSplitMatra(matraClass)) {
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265 |
le_int32 saveIndex = fGlyphStorage.getCharIndex(i+inv_count,success);
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266 |
le_uint32 saveAuxData = fGlyphStorage.getAuxData(i+inv_count,success);
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267 |
const SplitMatra *splitMatra = classTable->getSplitMatra(matraClass);
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268 |
int j;
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16889
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269 |
for (j = 0 ; j < SM_MAX_PIECES && *(splitMatra)[j] != 0 ; j++) {
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7486
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LEUnicode piece = (*splitMatra)[j];
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271 |
if ( j == 0 ) {
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272 |
fOutChars[i+inv_count] = piece;
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273 |
matraClass = classTable->getCharClass(piece);
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274 |
} else {
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275 |
insertCharacter(piece,i+1+inv_count,saveIndex,saveAuxData);
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276 |
nextSyllable++;
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277 |
}
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278 |
}
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279 |
}
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280 |
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281 |
if ((matraClass & CF_POS_MASK) == CF_POS_BEFORE) {
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282 |
moveCharacter(i+inv_count,beginSyllable+inv_count);
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283 |
}
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284 |
}
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285 |
}
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286 |
}
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287 |
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288 |
void moveCharacter( le_int32 fromPosition, le_int32 toPosition ) {
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289 |
le_int32 i,saveIndex;
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290 |
le_uint32 saveAuxData;
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291 |
LEUnicode saveChar = fOutChars[fromPosition];
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292 |
LEErrorCode success = LE_NO_ERROR;
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293 |
LEErrorCode success2 = LE_NO_ERROR;
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294 |
saveIndex = fGlyphStorage.getCharIndex(fromPosition,success);
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295 |
saveAuxData = fGlyphStorage.getAuxData(fromPosition,success);
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296 |
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297 |
if ( fromPosition > toPosition ) {
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298 |
for ( i = fromPosition ; i > toPosition ; i-- ) {
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299 |
fOutChars[i] = fOutChars[i-1];
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300 |
fGlyphStorage.setCharIndex(i,fGlyphStorage.getCharIndex(i-1,success2),success);
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301 |
fGlyphStorage.setAuxData(i,fGlyphStorage.getAuxData(i-1,success2), success);
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302 |
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303 |
}
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304 |
} else {
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305 |
for ( i = fromPosition ; i < toPosition ; i++ ) {
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306 |
fOutChars[i] = fOutChars[i+1];
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307 |
fGlyphStorage.setCharIndex(i,fGlyphStorage.getCharIndex(i+1,success2),success);
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308 |
fGlyphStorage.setAuxData(i,fGlyphStorage.getAuxData(i+1,success2), success);
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309 |
}
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310 |
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|
311 |
}
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|
312 |
fOutChars[toPosition] = saveChar;
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|
313 |
fGlyphStorage.setCharIndex(toPosition,saveIndex,success);
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314 |
fGlyphStorage.setAuxData(toPosition,saveAuxData,success);
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315 |
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316 |
}
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|
317 |
void insertCharacter( LEUnicode ch, le_int32 toPosition, le_int32 charIndex, le_uint32 auxData ) {
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|
318 |
LEErrorCode success = LE_NO_ERROR;
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|
319 |
le_int32 i;
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|
320 |
fOutIndex += 1;
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321 |
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322 |
for ( i = fOutIndex ; i > toPosition ; i--) {
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323 |
fOutChars[i] = fOutChars[i-1];
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324 |
fGlyphStorage.setCharIndex(i,fGlyphStorage.getCharIndex(i-1,success),success);
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325 |
fGlyphStorage.setAuxData(i,fGlyphStorage.getAuxData(i-1,success), success);
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|
326 |
}
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327 |
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|
328 |
fOutChars[toPosition] = ch;
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|
329 |
fGlyphStorage.setCharIndex(toPosition,charIndex,success);
|
|
|
330 |
fGlyphStorage.setAuxData(toPosition,auxData,success);
|
|
|
331 |
|
|
|
332 |
}
|
|
|
333 |
void removeCharacter( le_int32 fromPosition ) {
|
|
|
334 |
LEErrorCode success = LE_NO_ERROR;
|
|
|
335 |
le_int32 i;
|
|
|
336 |
fOutIndex -= 1;
|
|
|
337 |
|
|
|
338 |
for ( i = fromPosition ; i < fOutIndex ; i--) {
|
|
|
339 |
fOutChars[i] = fOutChars[i+1];
|
|
|
340 |
fGlyphStorage.setCharIndex(i,fGlyphStorage.getCharIndex(i+1,success),success);
|
|
|
341 |
fGlyphStorage.setAuxData(i,fGlyphStorage.getAuxData(i+1,success), success);
|
|
|
342 |
}
|
|
|
343 |
}
|
|
|
344 |
|
|
3935
|
345 |
le_bool noteMatra(const IndicClassTable *classTable, LEUnicode matra, le_uint32 matraIndex, FeatureMask matraFeatures, le_bool wordStart)
|
|
2
|
346 |
{
|
|
|
347 |
IndicClassTable::CharClass matraClass = classTable->getCharClass(matra);
|
|
|
348 |
|
|
|
349 |
fMatraFeatures = matraFeatures;
|
|
|
350 |
|
|
|
351 |
if (wordStart) {
|
|
|
352 |
fMatraFeatures |= initFeatureMask;
|
|
|
353 |
}
|
|
|
354 |
|
|
|
355 |
if (IndicClassTable::isMatra(matraClass)) {
|
|
|
356 |
if (IndicClassTable::isSplitMatra(matraClass)) {
|
|
|
357 |
const SplitMatra *splitMatra = classTable->getSplitMatra(matraClass);
|
|
|
358 |
int i;
|
|
|
359 |
|
|
16889
|
360 |
for (i = 0; i < SM_MAX_PIECES && (*splitMatra)[i] != 0; i += 1) {
|
|
2
|
361 |
LEUnicode piece = (*splitMatra)[i];
|
|
|
362 |
IndicClassTable::CharClass pieceClass = classTable->getCharClass(piece);
|
|
|
363 |
|
|
|
364 |
saveMatra(piece, matraIndex, pieceClass);
|
|
|
365 |
}
|
|
|
366 |
} else {
|
|
|
367 |
saveMatra(matra, matraIndex, matraClass);
|
|
|
368 |
}
|
|
|
369 |
|
|
|
370 |
return TRUE;
|
|
|
371 |
}
|
|
|
372 |
|
|
|
373 |
return FALSE;
|
|
|
374 |
}
|
|
|
375 |
|
|
3935
|
376 |
void noteVowelModifier(const IndicClassTable *classTable, LEUnicode vowelModifier, le_uint32 vowelModifierIndex, FeatureMask vowelModifierFeatures)
|
|
2
|
377 |
{
|
|
|
378 |
IndicClassTable::CharClass vmClass = classTable->getCharClass(vowelModifier);
|
|
|
379 |
|
|
|
380 |
fVMIndex = vowelModifierIndex;
|
|
3935
|
381 |
fVMFeatures = vowelModifierFeatures;
|
|
2
|
382 |
|
|
|
383 |
if (IndicClassTable::isVowelModifier(vmClass)) {
|
|
|
384 |
switch (vmClass & CF_POS_MASK) {
|
|
|
385 |
case CF_POS_ABOVE:
|
|
|
386 |
fVMabove = vowelModifier;
|
|
|
387 |
break;
|
|
|
388 |
|
|
|
389 |
case CF_POS_AFTER:
|
|
|
390 |
fVMpost = vowelModifier;
|
|
|
391 |
break;
|
|
|
392 |
|
|
|
393 |
default:
|
|
|
394 |
// FIXME: this is an error...
|
|
|
395 |
break;
|
|
|
396 |
}
|
|
|
397 |
}
|
|
|
398 |
}
|
|
|
399 |
|
|
3935
|
400 |
void noteStressMark(const IndicClassTable *classTable, LEUnicode stressMark, le_uint32 stressMarkIndex, FeatureMask stressMarkFeatures)
|
|
2
|
401 |
{
|
|
|
402 |
IndicClassTable::CharClass smClass = classTable->getCharClass(stressMark);
|
|
|
403 |
|
|
|
404 |
fSMIndex = stressMarkIndex;
|
|
3935
|
405 |
fSMFeatures = stressMarkFeatures;
|
|
2
|
406 |
|
|
|
407 |
if (IndicClassTable::isStressMark(smClass)) {
|
|
|
408 |
switch (smClass & CF_POS_MASK) {
|
|
|
409 |
case CF_POS_ABOVE:
|
|
|
410 |
fSMabove = stressMark;
|
|
|
411 |
break;
|
|
|
412 |
|
|
|
413 |
case CF_POS_BELOW:
|
|
|
414 |
fSMbelow = stressMark;
|
|
|
415 |
break;
|
|
|
416 |
|
|
|
417 |
default:
|
|
|
418 |
// FIXME: this is an error...
|
|
|
419 |
break;
|
|
|
420 |
}
|
|
|
421 |
}
|
|
|
422 |
}
|
|
|
423 |
|
|
7486
|
424 |
void notePreBaseConsonant(le_uint32 index,LEUnicode PBConsonant, LEUnicode PBVirama, FeatureMask features)
|
|
|
425 |
{
|
|
|
426 |
fPBCIndex = index;
|
|
|
427 |
fPreBaseConsonant = PBConsonant;
|
|
|
428 |
fPreBaseVirama = PBVirama;
|
|
|
429 |
fPBCFeatures = features;
|
|
|
430 |
}
|
|
|
431 |
|
|
2
|
432 |
void noteBaseConsonant()
|
|
|
433 |
{
|
|
|
434 |
if (fMPreFixups != NULL && fMPreOutIndex >= 0) {
|
|
|
435 |
fMPreFixups->add(fOutIndex, fMPreOutIndex);
|
|
|
436 |
}
|
|
|
437 |
}
|
|
|
438 |
|
|
7486
|
439 |
// Handles Al-Lakuna in Sinhala split vowels.
|
|
|
440 |
void writeAlLakuna()
|
|
2
|
441 |
{
|
|
7486
|
442 |
if (fAlLakuna != 0) {
|
|
|
443 |
writeChar(fAlLakuna, fAlLakunaIndex, fMatraFeatures);
|
|
2
|
444 |
}
|
|
|
445 |
}
|
|
|
446 |
|
|
|
447 |
void writeMpre()
|
|
|
448 |
{
|
|
|
449 |
if (fMpre != 0) {
|
|
|
450 |
fMPreOutIndex = fOutIndex;
|
|
|
451 |
writeChar(fMpre, fMpreIndex, fMatraFeatures);
|
|
|
452 |
}
|
|
|
453 |
}
|
|
|
454 |
|
|
|
455 |
void writeMbelow()
|
|
|
456 |
{
|
|
|
457 |
if (fMbelow != 0) {
|
|
|
458 |
writeChar(fMbelow, fMbelowIndex, fMatraFeatures);
|
|
|
459 |
}
|
|
|
460 |
}
|
|
|
461 |
|
|
|
462 |
void writeMabove()
|
|
|
463 |
{
|
|
|
464 |
if (fMabove != 0) {
|
|
|
465 |
writeChar(fMabove, fMaboveIndex, fMatraFeatures);
|
|
|
466 |
}
|
|
|
467 |
}
|
|
|
468 |
|
|
|
469 |
void writeMpost()
|
|
|
470 |
{
|
|
|
471 |
if (fMpost != 0) {
|
|
|
472 |
writeChar(fMpost, fMpostIndex, fMatraFeatures);
|
|
|
473 |
}
|
|
|
474 |
}
|
|
|
475 |
|
|
|
476 |
void writeLengthMark()
|
|
|
477 |
{
|
|
|
478 |
if (fLengthMark != 0) {
|
|
|
479 |
writeChar(fLengthMark, fLengthMarkIndex, fMatraFeatures);
|
|
|
480 |
}
|
|
|
481 |
}
|
|
|
482 |
|
|
|
483 |
void writeVMabove()
|
|
|
484 |
{
|
|
|
485 |
if (fVMabove != 0) {
|
|
|
486 |
writeChar(fVMabove, fVMIndex, fVMFeatures);
|
|
|
487 |
}
|
|
|
488 |
}
|
|
|
489 |
|
|
|
490 |
void writeVMpost()
|
|
|
491 |
{
|
|
|
492 |
if (fVMpost != 0) {
|
|
|
493 |
writeChar(fVMpost, fVMIndex, fVMFeatures);
|
|
|
494 |
}
|
|
|
495 |
}
|
|
|
496 |
|
|
|
497 |
void writeSMabove()
|
|
|
498 |
{
|
|
|
499 |
if (fSMabove != 0) {
|
|
|
500 |
writeChar(fSMabove, fSMIndex, fSMFeatures);
|
|
|
501 |
}
|
|
|
502 |
}
|
|
|
503 |
|
|
|
504 |
void writeSMbelow()
|
|
|
505 |
{
|
|
|
506 |
if (fSMbelow != 0) {
|
|
|
507 |
writeChar(fSMbelow, fSMIndex, fSMFeatures);
|
|
|
508 |
}
|
|
|
509 |
}
|
|
|
510 |
|
|
7486
|
511 |
void writePreBaseConsonant()
|
|
|
512 |
{
|
|
|
513 |
// The TDIL spec says that consonant + virama + RRA should produce a rakar in Malayalam. However,
|
|
|
514 |
// it seems that almost none of the fonts for Malayalam are set up to handle this.
|
|
|
515 |
// So, we're going to force the issue here by using the rakar as defined with RA in most fonts.
|
|
|
516 |
|
|
|
517 |
if (fPreBaseConsonant == 0x0d31) { // RRA
|
|
|
518 |
fPreBaseConsonant = 0x0d30; // RA
|
|
|
519 |
}
|
|
|
520 |
|
|
|
521 |
if (fPreBaseConsonant != 0) {
|
|
|
522 |
writeChar(fPreBaseConsonant, fPBCIndex, fPBCFeatures);
|
|
|
523 |
writeChar(fPreBaseVirama,fPBCIndex-1,fPBCFeatures);
|
|
|
524 |
}
|
|
|
525 |
}
|
|
|
526 |
|
|
2
|
527 |
le_int32 getOutputIndex()
|
|
|
528 |
{
|
|
|
529 |
return fOutIndex;
|
|
|
530 |
}
|
|
|
531 |
};
|
|
|
532 |
|
|
7486
|
533 |
|
|
2
|
534 |
|
|
|
535 |
// TODO: Find better names for these!
|
|
7486
|
536 |
#define tagArray4 (loclFeatureMask | nuktFeatureMask | akhnFeatureMask | vatuFeatureMask | presFeatureMask | blwsFeatureMask | abvsFeatureMask | pstsFeatureMask | halnFeatureMask | blwmFeatureMask | abvmFeatureMask | distFeatureMask)
|
|
2
|
537 |
#define tagArray3 (pstfFeatureMask | tagArray4)
|
|
|
538 |
#define tagArray2 (halfFeatureMask | tagArray3)
|
|
|
539 |
#define tagArray1 (blwfFeatureMask | tagArray2)
|
|
|
540 |
#define tagArray0 (rphfFeatureMask | tagArray1)
|
|
|
541 |
|
|
7486
|
542 |
static const FeatureMap featureMap[] = {
|
|
|
543 |
{loclFeatureTag, loclFeatureMask},
|
|
2
|
544 |
{initFeatureTag, initFeatureMask},
|
|
|
545 |
{nuktFeatureTag, nuktFeatureMask},
|
|
|
546 |
{akhnFeatureTag, akhnFeatureMask},
|
|
|
547 |
{rphfFeatureTag, rphfFeatureMask},
|
|
|
548 |
{blwfFeatureTag, blwfFeatureMask},
|
|
|
549 |
{halfFeatureTag, halfFeatureMask},
|
|
|
550 |
{pstfFeatureTag, pstfFeatureMask},
|
|
|
551 |
{vatuFeatureTag, vatuFeatureMask},
|
|
|
552 |
{presFeatureTag, presFeatureMask},
|
|
|
553 |
{blwsFeatureTag, blwsFeatureMask},
|
|
|
554 |
{abvsFeatureTag, abvsFeatureMask},
|
|
|
555 |
{pstsFeatureTag, pstsFeatureMask},
|
|
|
556 |
{halnFeatureTag, halnFeatureMask},
|
|
|
557 |
{blwmFeatureTag, blwmFeatureMask},
|
|
|
558 |
{abvmFeatureTag, abvmFeatureMask},
|
|
|
559 |
{distFeatureTag, distFeatureMask}
|
|
|
560 |
};
|
|
|
561 |
|
|
|
562 |
static const le_int32 featureCount = LE_ARRAY_SIZE(featureMap);
|
|
|
563 |
|
|
7486
|
564 |
static const FeatureMap v2FeatureMap[] = {
|
|
|
565 |
{loclFeatureTag, loclFeatureMask},
|
|
|
566 |
{nuktFeatureTag, nuktFeatureMask},
|
|
|
567 |
{akhnFeatureTag, akhnFeatureMask},
|
|
|
568 |
{rphfFeatureTag, rphfFeatureMask},
|
|
|
569 |
{rkrfFeatureTag, rkrfFeatureMask},
|
|
|
570 |
{blwfFeatureTag, blwfFeatureMask},
|
|
|
571 |
{halfFeatureTag, halfFeatureMask},
|
|
|
572 |
{vatuFeatureTag, vatuFeatureMask},
|
|
|
573 |
{cjctFeatureTag, cjctFeatureMask},
|
|
|
574 |
{presFeatureTag, presFeatureMask},
|
|
|
575 |
{abvsFeatureTag, abvsFeatureMask},
|
|
|
576 |
{blwsFeatureTag, blwsFeatureMask},
|
|
|
577 |
{pstsFeatureTag, pstsFeatureMask},
|
|
|
578 |
{halnFeatureTag, halnFeatureMask},
|
|
|
579 |
{caltFeatureTag, caltFeatureMask},
|
|
|
580 |
{kernFeatureTag, kernFeatureMask},
|
|
|
581 |
{distFeatureTag, distFeatureMask},
|
|
|
582 |
{abvmFeatureTag, abvmFeatureMask},
|
|
|
583 |
{blwmFeatureTag, blwmFeatureMask}
|
|
|
584 |
};
|
|
|
585 |
|
|
|
586 |
static const le_int32 v2FeatureMapCount = LE_ARRAY_SIZE(v2FeatureMap);
|
|
|
587 |
|
|
2
|
588 |
static const le_int8 stateTable[][CC_COUNT] =
|
|
|
589 |
{
|
|
7486
|
590 |
// xx vm sm iv i2 i3 ct cn nu dv s1 s2 s3 vr zw al
|
|
|
591 |
{ 1, 6, 1, 5, 8, 11, 3, 2, 1, 5, 9, 5, 5, 1, 1, 1}, // 0 - ground state
|
|
|
592 |
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, // 1 - exit state
|
|
|
593 |
{-1, 6, 1, -1, -1, -1, -1, -1, -1, 5, 9, 5, 5, 4, 12, -1}, // 2 - consonant with nukta
|
|
|
594 |
{-1, 6, 1, -1, -1, -1, -1, -1, 2, 5, 9, 5, 5, 4, 12, 13}, // 3 - consonant
|
|
|
595 |
{-1, -1, -1, -1, -1, -1, 3, 2, -1, -1, -1, -1, -1, -1, 7, -1}, // 4 - consonant virama
|
|
|
596 |
{-1, 6, 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, // 5 - dependent vowels
|
|
|
597 |
{-1, -1, 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, // 6 - vowel mark
|
|
|
598 |
{-1, -1, -1, -1, -1, -1, 3, 2, -1, -1, -1, -1, -1, -1, -1, -1}, // 7 - consonant virama ZWJ, consonant ZWJ virama
|
|
|
599 |
{-1, 6, 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4, -1, -1}, // 8 - independent vowels that can take a virama
|
|
|
600 |
{-1, 6, 1, -1, -1, -1, -1, -1, -1, -1, -1, 10, 5, -1, -1, -1}, // 9 - first part of split vowel
|
|
|
601 |
{-1, 6, 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 5, -1, -1, -1}, // 10 - second part of split vowel
|
|
|
602 |
{-1, 6, 1, -1, -1, -1, -1, -1, -1, 5, 9, 5, 5, 4, -1, -1}, // 11 - independent vowels that can take an iv
|
|
|
603 |
{-1, -1, 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 7, -1, 7}, // 12 - consonant ZWJ (TODO: Take everything else that can be after a consonant?)
|
|
|
604 |
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 7, -1} // 13 - consonant al-lakuna ZWJ consonant
|
|
2
|
605 |
};
|
|
|
606 |
|
|
|
607 |
|
|
|
608 |
const FeatureMap *IndicReordering::getFeatureMap(le_int32 &count)
|
|
|
609 |
{
|
|
|
610 |
count = featureCount;
|
|
|
611 |
|
|
|
612 |
return featureMap;
|
|
|
613 |
}
|
|
|
614 |
|
|
7486
|
615 |
const FeatureMap *IndicReordering::getv2FeatureMap(le_int32 &count)
|
|
|
616 |
{
|
|
|
617 |
count = v2FeatureMapCount;
|
|
|
618 |
|
|
|
619 |
return v2FeatureMap;
|
|
|
620 |
}
|
|
|
621 |
|
|
3935
|
622 |
le_int32 IndicReordering::findSyllable(const IndicClassTable *classTable, const LEUnicode *chars, le_int32 prev, le_int32 charCount)
|
|
2
|
623 |
{
|
|
|
624 |
le_int32 cursor = prev;
|
|
|
625 |
le_int8 state = 0;
|
|
7486
|
626 |
le_int8 consonant_count = 0;
|
|
2
|
627 |
|
|
|
628 |
while (cursor < charCount) {
|
|
|
629 |
IndicClassTable::CharClass charClass = classTable->getCharClass(chars[cursor]);
|
|
|
630 |
|
|
7486
|
631 |
if ( IndicClassTable::isConsonant(charClass) ) {
|
|
|
632 |
consonant_count++;
|
|
|
633 |
if ( consonant_count > MAX_CONSONANTS_PER_SYLLABLE ) {
|
|
|
634 |
break;
|
|
|
635 |
}
|
|
|
636 |
}
|
|
|
637 |
|
|
2
|
638 |
state = stateTable[state][charClass & CF_CLASS_MASK];
|
|
|
639 |
|
|
|
640 |
if (state < 0) {
|
|
|
641 |
break;
|
|
|
642 |
}
|
|
|
643 |
|
|
|
644 |
cursor += 1;
|
|
|
645 |
}
|
|
|
646 |
|
|
|
647 |
return cursor;
|
|
|
648 |
}
|
|
|
649 |
|
|
|
650 |
le_int32 IndicReordering::reorder(const LEUnicode *chars, le_int32 charCount, le_int32 scriptCode,
|
|
|
651 |
LEUnicode *outChars, LEGlyphStorage &glyphStorage,
|
|
7486
|
652 |
MPreFixups **outMPreFixups, LEErrorCode& success)
|
|
2
|
653 |
{
|
|
7486
|
654 |
if (LE_FAILURE(success)) {
|
|
|
655 |
return 0;
|
|
|
656 |
}
|
|
|
657 |
|
|
2
|
658 |
MPreFixups *mpreFixups = NULL;
|
|
|
659 |
const IndicClassTable *classTable = IndicClassTable::getScriptClassTable(scriptCode);
|
|
|
660 |
|
|
16891
|
661 |
if(classTable==NULL) {
|
|
|
662 |
success = LE_MEMORY_ALLOCATION_ERROR;
|
|
|
663 |
return 0;
|
|
|
664 |
}
|
|
|
665 |
|
|
2
|
666 |
if (classTable->scriptFlags & SF_MPRE_FIXUP) {
|
|
|
667 |
mpreFixups = new MPreFixups(charCount);
|
|
7486
|
668 |
if (mpreFixups == NULL) {
|
|
|
669 |
success = LE_MEMORY_ALLOCATION_ERROR;
|
|
|
670 |
return 0;
|
|
|
671 |
}
|
|
2
|
672 |
}
|
|
|
673 |
|
|
7486
|
674 |
IndicReorderingOutput output(outChars, glyphStorage, mpreFixups);
|
|
2
|
675 |
le_int32 i, prev = 0;
|
|
|
676 |
le_bool lastInWord = FALSE;
|
|
|
677 |
|
|
|
678 |
while (prev < charCount) {
|
|
|
679 |
le_int32 syllable = findSyllable(classTable, chars, prev, charCount);
|
|
|
680 |
le_int32 matra, markStart = syllable;
|
|
|
681 |
|
|
|
682 |
output.reset();
|
|
|
683 |
|
|
|
684 |
if (classTable->isStressMark(chars[markStart - 1])) {
|
|
|
685 |
markStart -= 1;
|
|
|
686 |
output.noteStressMark(classTable, chars[markStart], markStart, tagArray1);
|
|
|
687 |
}
|
|
|
688 |
|
|
7486
|
689 |
if (markStart != prev && classTable->isVowelModifier(chars[markStart - 1])) {
|
|
2
|
690 |
markStart -= 1;
|
|
|
691 |
output.noteVowelModifier(classTable, chars[markStart], markStart, tagArray1);
|
|
|
692 |
}
|
|
|
693 |
|
|
|
694 |
matra = markStart - 1;
|
|
|
695 |
|
|
|
696 |
while (output.noteMatra(classTable, chars[matra], matra, tagArray1, !lastInWord) && matra != prev) {
|
|
|
697 |
matra -= 1;
|
|
|
698 |
}
|
|
|
699 |
|
|
|
700 |
lastInWord = TRUE;
|
|
|
701 |
|
|
|
702 |
switch (classTable->getCharClass(chars[prev]) & CF_CLASS_MASK) {
|
|
|
703 |
case CC_RESERVED:
|
|
|
704 |
lastInWord = FALSE;
|
|
|
705 |
/* fall through */
|
|
|
706 |
|
|
|
707 |
case CC_INDEPENDENT_VOWEL:
|
|
|
708 |
case CC_ZERO_WIDTH_MARK:
|
|
|
709 |
for (i = prev; i < syllable; i += 1) {
|
|
|
710 |
output.writeChar(chars[i], i, tagArray1);
|
|
|
711 |
}
|
|
|
712 |
|
|
|
713 |
break;
|
|
|
714 |
|
|
7486
|
715 |
case CC_AL_LAKUNA:
|
|
2
|
716 |
case CC_NUKTA:
|
|
7486
|
717 |
output.writeChar(C_DOTTED_CIRCLE, prev, tagArray1);
|
|
|
718 |
output.writeChar(chars[prev], prev, tagArray1);
|
|
|
719 |
break;
|
|
|
720 |
|
|
2
|
721 |
case CC_VIRAMA:
|
|
7486
|
722 |
// A lone virama is illegal unless it follows a
|
|
|
723 |
// MALAYALAM_VOWEL_SIGN_U. Such a usage is called
|
|
|
724 |
// "samvruthokaram".
|
|
|
725 |
if (chars[prev - 1] != C_MALAYALAM_VOWEL_SIGN_U) {
|
|
2
|
726 |
output.writeChar(C_DOTTED_CIRCLE, prev, tagArray1);
|
|
7486
|
727 |
}
|
|
|
728 |
|
|
2
|
729 |
output.writeChar(chars[prev], prev, tagArray1);
|
|
|
730 |
break;
|
|
|
731 |
|
|
|
732 |
case CC_DEPENDENT_VOWEL:
|
|
|
733 |
case CC_SPLIT_VOWEL_PIECE_1:
|
|
|
734 |
case CC_SPLIT_VOWEL_PIECE_2:
|
|
|
735 |
case CC_SPLIT_VOWEL_PIECE_3:
|
|
|
736 |
case CC_VOWEL_MODIFIER:
|
|
|
737 |
case CC_STRESS_MARK:
|
|
|
738 |
output.writeMpre();
|
|
|
739 |
|
|
|
740 |
output.writeChar(C_DOTTED_CIRCLE, prev, tagArray1);
|
|
|
741 |
|
|
|
742 |
output.writeMbelow();
|
|
|
743 |
output.writeSMbelow();
|
|
|
744 |
output.writeMabove();
|
|
|
745 |
|
|
|
746 |
if ((classTable->scriptFlags & SF_MATRAS_AFTER_BASE) != 0) {
|
|
|
747 |
output.writeMpost();
|
|
|
748 |
}
|
|
|
749 |
|
|
|
750 |
if ((classTable->scriptFlags & SF_REPH_AFTER_BELOW) != 0) {
|
|
|
751 |
output.writeVMabove();
|
|
|
752 |
output.writeSMabove(); // FIXME: there are no SM's in these scripts...
|
|
|
753 |
}
|
|
|
754 |
|
|
|
755 |
if ((classTable->scriptFlags & SF_MATRAS_AFTER_BASE) == 0) {
|
|
|
756 |
output.writeMpost();
|
|
|
757 |
}
|
|
|
758 |
|
|
|
759 |
output.writeLengthMark();
|
|
7486
|
760 |
output.writeAlLakuna();
|
|
2
|
761 |
|
|
|
762 |
if ((classTable->scriptFlags & SF_REPH_AFTER_BELOW) == 0) {
|
|
|
763 |
output.writeVMabove();
|
|
|
764 |
output.writeSMabove();
|
|
|
765 |
}
|
|
|
766 |
|
|
|
767 |
output.writeVMpost();
|
|
|
768 |
break;
|
|
|
769 |
|
|
|
770 |
case CC_INDEPENDENT_VOWEL_2:
|
|
|
771 |
case CC_INDEPENDENT_VOWEL_3:
|
|
|
772 |
case CC_CONSONANT:
|
|
|
773 |
case CC_CONSONANT_WITH_NUKTA:
|
|
|
774 |
{
|
|
|
775 |
le_uint32 length = markStart - prev;
|
|
|
776 |
le_int32 lastConsonant = markStart - 1;
|
|
|
777 |
le_int32 baseLimit = prev;
|
|
|
778 |
|
|
|
779 |
// Check for REPH at front of syllable
|
|
7486
|
780 |
if (length > 2 && classTable->isReph(chars[prev]) && classTable->isVirama(chars[prev + 1]) && chars[prev + 2] != C_SIGN_ZWNJ) {
|
|
2
|
781 |
baseLimit += 2;
|
|
|
782 |
|
|
|
783 |
// Check for eyelash RA, if the script supports it
|
|
|
784 |
if ((classTable->scriptFlags & SF_EYELASH_RA) != 0 &&
|
|
|
785 |
chars[baseLimit] == C_SIGN_ZWJ) {
|
|
|
786 |
if (length > 3) {
|
|
|
787 |
baseLimit += 1;
|
|
|
788 |
} else {
|
|
|
789 |
baseLimit -= 2;
|
|
|
790 |
}
|
|
|
791 |
}
|
|
|
792 |
}
|
|
|
793 |
|
|
|
794 |
while (lastConsonant > baseLimit && !classTable->isConsonant(chars[lastConsonant])) {
|
|
|
795 |
lastConsonant -= 1;
|
|
|
796 |
}
|
|
|
797 |
|
|
7486
|
798 |
|
|
|
799 |
IndicClassTable::CharClass charClass = CC_RESERVED;
|
|
|
800 |
IndicClassTable::CharClass nextClass = CC_RESERVED;
|
|
2
|
801 |
le_int32 baseConsonant = lastConsonant;
|
|
|
802 |
le_int32 postBase = lastConsonant + 1;
|
|
|
803 |
le_int32 postBaseLimit = classTable->scriptFlags & SF_POST_BASE_LIMIT_MASK;
|
|
|
804 |
le_bool seenVattu = FALSE;
|
|
|
805 |
le_bool seenBelowBaseForm = FALSE;
|
|
7486
|
806 |
le_bool seenPreBaseForm = FALSE;
|
|
|
807 |
le_bool hasNukta = FALSE;
|
|
|
808 |
le_bool hasBelowBaseForm = FALSE;
|
|
|
809 |
le_bool hasPostBaseForm = FALSE;
|
|
|
810 |
le_bool hasPreBaseForm = FALSE;
|
|
2
|
811 |
|
|
|
812 |
if (postBase < markStart && classTable->isNukta(chars[postBase])) {
|
|
7486
|
813 |
charClass = CC_NUKTA;
|
|
2
|
814 |
postBase += 1;
|
|
|
815 |
}
|
|
|
816 |
|
|
|
817 |
while (baseConsonant > baseLimit) {
|
|
7486
|
818 |
nextClass = charClass;
|
|
|
819 |
hasNukta = IndicClassTable::isNukta(nextClass);
|
|
|
820 |
charClass = classTable->getCharClass(chars[baseConsonant]);
|
|
|
821 |
|
|
|
822 |
hasBelowBaseForm = IndicClassTable::hasBelowBaseForm(charClass) && !hasNukta;
|
|
|
823 |
hasPostBaseForm = IndicClassTable::hasPostBaseForm(charClass) && !hasNukta;
|
|
|
824 |
hasPreBaseForm = IndicClassTable::hasPreBaseForm(charClass) && !hasNukta;
|
|
2
|
825 |
|
|
|
826 |
if (IndicClassTable::isConsonant(charClass)) {
|
|
|
827 |
if (postBaseLimit == 0 || seenVattu ||
|
|
|
828 |
(baseConsonant > baseLimit && !classTable->isVirama(chars[baseConsonant - 1])) ||
|
|
7486
|
829 |
!(hasBelowBaseForm || hasPostBaseForm || hasPreBaseForm)) {
|
|
2
|
830 |
break;
|
|
|
831 |
}
|
|
|
832 |
|
|
7486
|
833 |
// Note any pre-base consonants
|
|
|
834 |
if ( baseConsonant == lastConsonant && lastConsonant > 0 &&
|
|
|
835 |
hasPreBaseForm && classTable->isVirama(chars[baseConsonant - 1])) {
|
|
|
836 |
output.notePreBaseConsonant(lastConsonant,chars[lastConsonant],chars[lastConsonant-1],tagArray2);
|
|
|
837 |
seenPreBaseForm = TRUE;
|
|
2
|
838 |
|
|
7486
|
839 |
}
|
|
|
840 |
// consonants with nuktas are never vattus
|
|
|
841 |
seenVattu = IndicClassTable::isVattu(charClass) && !hasNukta;
|
|
|
842 |
|
|
|
843 |
// consonants with nuktas never have below- or post-base forms
|
|
|
844 |
if (hasPostBaseForm) {
|
|
2
|
845 |
if (seenBelowBaseForm) {
|
|
|
846 |
break;
|
|
|
847 |
}
|
|
|
848 |
|
|
|
849 |
postBase = baseConsonant;
|
|
7486
|
850 |
} else if (hasBelowBaseForm) {
|
|
2
|
851 |
seenBelowBaseForm = TRUE;
|
|
|
852 |
}
|
|
|
853 |
|
|
|
854 |
postBaseLimit -= 1;
|
|
|
855 |
}
|
|
|
856 |
|
|
|
857 |
baseConsonant -= 1;
|
|
|
858 |
}
|
|
|
859 |
|
|
|
860 |
// Write Mpre
|
|
|
861 |
output.writeMpre();
|
|
|
862 |
|
|
|
863 |
// Write eyelash RA
|
|
|
864 |
// NOTE: baseLimit == prev + 3 iff eyelash RA present...
|
|
|
865 |
if (baseLimit == prev + 3) {
|
|
|
866 |
output.writeChar(chars[prev], prev, tagArray2);
|
|
|
867 |
output.writeChar(chars[prev + 1], prev + 1, tagArray2);
|
|
|
868 |
output.writeChar(chars[prev + 2], prev + 2, tagArray2);
|
|
|
869 |
}
|
|
|
870 |
|
|
|
871 |
// write any pre-base consonants
|
|
7486
|
872 |
output.writePreBaseConsonant();
|
|
|
873 |
|
|
2
|
874 |
le_bool supressVattu = TRUE;
|
|
|
875 |
|
|
|
876 |
for (i = baseLimit; i < baseConsonant; i += 1) {
|
|
|
877 |
LEUnicode ch = chars[i];
|
|
7486
|
878 |
// Don't put 'pstf' or 'blwf' on anything before the base consonant.
|
|
|
879 |
FeatureMask features = tagArray1 & ~( pstfFeatureMask | blwfFeatureMask );
|
|
|
880 |
|
|
|
881 |
charClass = classTable->getCharClass(ch);
|
|
|
882 |
nextClass = classTable->getCharClass(chars[i + 1]);
|
|
|
883 |
hasNukta = IndicClassTable::isNukta(nextClass);
|
|
2
|
884 |
|
|
|
885 |
if (IndicClassTable::isConsonant(charClass)) {
|
|
7486
|
886 |
if (IndicClassTable::isVattu(charClass) && !hasNukta && supressVattu) {
|
|
2
|
887 |
features = tagArray4;
|
|
|
888 |
}
|
|
|
889 |
|
|
7486
|
890 |
supressVattu = IndicClassTable::isVattu(charClass) && !hasNukta;
|
|
2
|
891 |
} else if (IndicClassTable::isVirama(charClass) && chars[i + 1] == C_SIGN_ZWNJ)
|
|
|
892 |
{
|
|
|
893 |
features = tagArray4;
|
|
|
894 |
}
|
|
|
895 |
|
|
|
896 |
output.writeChar(ch, i, features);
|
|
|
897 |
}
|
|
|
898 |
|
|
|
899 |
le_int32 bcSpan = baseConsonant + 1;
|
|
|
900 |
|
|
|
901 |
if (bcSpan < markStart && classTable->isNukta(chars[bcSpan])) {
|
|
|
902 |
bcSpan += 1;
|
|
|
903 |
}
|
|
|
904 |
|
|
7486
|
905 |
if (baseConsonant == lastConsonant && bcSpan < markStart &&
|
|
|
906 |
(classTable->isVirama(chars[bcSpan]) || classTable->isAlLakuna(chars[bcSpan]))) {
|
|
2
|
907 |
bcSpan += 1;
|
|
|
908 |
|
|
|
909 |
if (bcSpan < markStart && chars[bcSpan] == C_SIGN_ZWNJ) {
|
|
|
910 |
bcSpan += 1;
|
|
|
911 |
}
|
|
|
912 |
}
|
|
|
913 |
|
|
|
914 |
// note the base consonant for post-GSUB fixups
|
|
|
915 |
output.noteBaseConsonant();
|
|
|
916 |
|
|
|
917 |
// write base consonant
|
|
|
918 |
for (i = baseConsonant; i < bcSpan; i += 1) {
|
|
|
919 |
output.writeChar(chars[i], i, tagArray4);
|
|
|
920 |
}
|
|
|
921 |
|
|
|
922 |
if ((classTable->scriptFlags & SF_MATRAS_AFTER_BASE) != 0) {
|
|
|
923 |
output.writeMbelow();
|
|
|
924 |
output.writeSMbelow(); // FIXME: there are no SMs in these scripts...
|
|
|
925 |
output.writeMabove();
|
|
|
926 |
output.writeMpost();
|
|
|
927 |
}
|
|
|
928 |
|
|
|
929 |
// write below-base consonants
|
|
7486
|
930 |
if (baseConsonant != lastConsonant && !seenPreBaseForm) {
|
|
2
|
931 |
for (i = bcSpan + 1; i < postBase; i += 1) {
|
|
|
932 |
output.writeChar(chars[i], i, tagArray1);
|
|
|
933 |
}
|
|
|
934 |
|
|
|
935 |
if (postBase > lastConsonant) {
|
|
|
936 |
// write halant that was after base consonant
|
|
|
937 |
output.writeChar(chars[bcSpan], bcSpan, tagArray1);
|
|
|
938 |
}
|
|
|
939 |
}
|
|
|
940 |
|
|
|
941 |
// write Mbelow, SMbelow, Mabove
|
|
|
942 |
if ((classTable->scriptFlags & SF_MATRAS_AFTER_BASE) == 0) {
|
|
|
943 |
output.writeMbelow();
|
|
|
944 |
output.writeSMbelow();
|
|
|
945 |
output.writeMabove();
|
|
|
946 |
}
|
|
|
947 |
|
|
|
948 |
if ((classTable->scriptFlags & SF_REPH_AFTER_BELOW) != 0) {
|
|
|
949 |
if (baseLimit == prev + 2) {
|
|
|
950 |
output.writeChar(chars[prev], prev, tagArray0);
|
|
|
951 |
output.writeChar(chars[prev + 1], prev + 1, tagArray0);
|
|
|
952 |
}
|
|
|
953 |
|
|
|
954 |
output.writeVMabove();
|
|
|
955 |
output.writeSMabove(); // FIXME: there are no SM's in these scripts...
|
|
|
956 |
}
|
|
|
957 |
|
|
|
958 |
// write post-base consonants
|
|
|
959 |
// FIXME: does this put the right tags on post-base consonants?
|
|
7486
|
960 |
if (baseConsonant != lastConsonant && !seenPreBaseForm) {
|
|
2
|
961 |
if (postBase <= lastConsonant) {
|
|
|
962 |
for (i = postBase; i <= lastConsonant; i += 1) {
|
|
|
963 |
output.writeChar(chars[i], i, tagArray3);
|
|
|
964 |
}
|
|
|
965 |
|
|
|
966 |
// write halant that was after base consonant
|
|
|
967 |
output.writeChar(chars[bcSpan], bcSpan, tagArray1);
|
|
|
968 |
}
|
|
|
969 |
|
|
|
970 |
// write the training halant, if there is one
|
|
|
971 |
if (lastConsonant < matra && classTable->isVirama(chars[matra])) {
|
|
|
972 |
output.writeChar(chars[matra], matra, tagArray4);
|
|
|
973 |
}
|
|
|
974 |
}
|
|
|
975 |
|
|
|
976 |
// write Mpost
|
|
|
977 |
if ((classTable->scriptFlags & SF_MATRAS_AFTER_BASE) == 0) {
|
|
|
978 |
output.writeMpost();
|
|
|
979 |
}
|
|
|
980 |
|
|
|
981 |
output.writeLengthMark();
|
|
7486
|
982 |
output.writeAlLakuna();
|
|
2
|
983 |
|
|
|
984 |
// write reph
|
|
|
985 |
if ((classTable->scriptFlags & SF_REPH_AFTER_BELOW) == 0) {
|
|
|
986 |
if (baseLimit == prev + 2) {
|
|
|
987 |
output.writeChar(chars[prev], prev, tagArray0);
|
|
|
988 |
output.writeChar(chars[prev + 1], prev + 1, tagArray0);
|
|
|
989 |
}
|
|
|
990 |
|
|
|
991 |
output.writeVMabove();
|
|
|
992 |
output.writeSMabove();
|
|
|
993 |
}
|
|
|
994 |
|
|
|
995 |
output.writeVMpost();
|
|
|
996 |
|
|
|
997 |
break;
|
|
|
998 |
}
|
|
|
999 |
|
|
|
1000 |
default:
|
|
|
1001 |
break;
|
|
|
1002 |
}
|
|
|
1003 |
|
|
|
1004 |
prev = syllable;
|
|
|
1005 |
}
|
|
|
1006 |
|
|
|
1007 |
*outMPreFixups = mpreFixups;
|
|
|
1008 |
|
|
|
1009 |
return output.getOutputIndex();
|
|
|
1010 |
}
|
|
|
1011 |
|
|
7486
|
1012 |
void IndicReordering::adjustMPres(MPreFixups *mpreFixups, LEGlyphStorage &glyphStorage, LEErrorCode& success)
|
|
2
|
1013 |
{
|
|
|
1014 |
if (mpreFixups != NULL) {
|
|
7486
|
1015 |
mpreFixups->apply(glyphStorage, success);
|
|
2
|
1016 |
|
|
|
1017 |
delete mpreFixups;
|
|
|
1018 |
}
|
|
|
1019 |
}
|
|
3935
|
1020 |
|
|
7486
|
1021 |
void IndicReordering::applyPresentationForms(LEGlyphStorage &glyphStorage, le_int32 count)
|
|
|
1022 |
{
|
|
|
1023 |
LEErrorCode success = LE_NO_ERROR;
|
|
|
1024 |
|
|
|
1025 |
// This sets us up for 2nd pass of glyph substitution as well as setting the feature masks for the
|
|
|
1026 |
// GPOS table lookups
|
|
|
1027 |
|
|
|
1028 |
for ( le_int32 i = 0 ; i < count ; i++ ) {
|
|
|
1029 |
glyphStorage.setAuxData(i, ( presentationFormsMask | positioningFormsMask ), success);
|
|
|
1030 |
}
|
|
|
1031 |
|
|
|
1032 |
}
|
|
|
1033 |
void IndicReordering::finalReordering(LEGlyphStorage &glyphStorage, le_int32 count)
|
|
|
1034 |
{
|
|
|
1035 |
LEErrorCode success = LE_NO_ERROR;
|
|
|
1036 |
|
|
|
1037 |
// Reposition REPH as appropriate
|
|
|
1038 |
|
|
|
1039 |
for ( le_int32 i = 0 ; i < count ; i++ ) {
|
|
|
1040 |
|
|
|
1041 |
le_int32 tmpAuxData = glyphStorage.getAuxData(i,success);
|
|
|
1042 |
LEGlyphID tmpGlyph = glyphStorage.getGlyphID(i,success);
|
|
|
1043 |
|
|
|
1044 |
if ( ( tmpGlyph != NO_GLYPH ) && (tmpAuxData & rephConsonantMask) && !(tmpAuxData & repositionedGlyphMask)) {
|
|
|
1045 |
|
|
|
1046 |
le_bool targetPositionFound = false;
|
|
|
1047 |
le_int32 targetPosition = i+1;
|
|
|
1048 |
le_int32 baseConsonantData;
|
|
|
1049 |
|
|
|
1050 |
while (!targetPositionFound) {
|
|
|
1051 |
tmpGlyph = glyphStorage.getGlyphID(targetPosition,success);
|
|
|
1052 |
tmpAuxData = glyphStorage.getAuxData(targetPosition,success);
|
|
|
1053 |
|
|
|
1054 |
if ( tmpAuxData & baseConsonantMask ) {
|
|
|
1055 |
baseConsonantData = tmpAuxData;
|
|
|
1056 |
targetPositionFound = true;
|
|
|
1057 |
} else {
|
|
|
1058 |
targetPosition++;
|
|
|
1059 |
}
|
|
|
1060 |
}
|
|
|
1061 |
|
|
|
1062 |
// Make sure we are not putting the reph into an empty hole
|
|
|
1063 |
|
|
|
1064 |
le_bool targetPositionHasGlyph = false;
|
|
|
1065 |
while (!targetPositionHasGlyph) {
|
|
|
1066 |
tmpGlyph = glyphStorage.getGlyphID(targetPosition,success);
|
|
|
1067 |
if ( tmpGlyph != NO_GLYPH ) {
|
|
|
1068 |
targetPositionHasGlyph = true;
|
|
|
1069 |
} else {
|
|
|
1070 |
targetPosition--;
|
|
|
1071 |
}
|
|
|
1072 |
}
|
|
|
1073 |
|
|
|
1074 |
// Make sure that REPH is positioned after any above base or post base matras
|
|
|
1075 |
//
|
|
|
1076 |
le_bool checkMatraDone = false;
|
|
|
1077 |
le_int32 checkMatraPosition = targetPosition+1;
|
|
|
1078 |
while ( !checkMatraDone ) {
|
|
|
1079 |
tmpAuxData = glyphStorage.getAuxData(checkMatraPosition,success);
|
|
|
1080 |
if ( checkMatraPosition >= count || ( (tmpAuxData ^ baseConsonantData) & LE_GLYPH_GROUP_MASK)) {
|
|
|
1081 |
checkMatraDone = true;
|
|
|
1082 |
continue;
|
|
|
1083 |
}
|
|
|
1084 |
if ( (tmpAuxData & matraMask) &&
|
|
|
1085 |
(((tmpAuxData & markPositionMask) == aboveBasePosition) ||
|
|
|
1086 |
((tmpAuxData & markPositionMask) == postBasePosition))) {
|
|
|
1087 |
targetPosition = checkMatraPosition;
|
|
|
1088 |
}
|
|
|
1089 |
checkMatraPosition++;
|
|
|
1090 |
}
|
|
|
1091 |
|
|
|
1092 |
glyphStorage.moveGlyph(i,targetPosition,repositionedGlyphMask);
|
|
|
1093 |
}
|
|
|
1094 |
}
|
|
|
1095 |
}
|
|
|
1096 |
|
|
|
1097 |
|
|
|
1098 |
le_int32 IndicReordering::v2process(const LEUnicode *chars, le_int32 charCount, le_int32 scriptCode,
|
|
|
1099 |
LEUnicode *outChars, LEGlyphStorage &glyphStorage)
|
|
|
1100 |
{
|
|
|
1101 |
const IndicClassTable *classTable = IndicClassTable::getScriptClassTable(scriptCode);
|
|
|
1102 |
|
|
|
1103 |
DynamicProperties dynProps[INDIC_BLOCK_SIZE];
|
|
|
1104 |
IndicReordering::getDynamicProperties(dynProps,classTable);
|
|
|
1105 |
|
|
|
1106 |
IndicReorderingOutput output(outChars, glyphStorage, NULL);
|
|
|
1107 |
le_int32 i, firstConsonant, baseConsonant, secondConsonant, inv_count = 0, beginSyllable = 0;
|
|
|
1108 |
//le_bool lastInWord = FALSE;
|
|
|
1109 |
|
|
|
1110 |
while (beginSyllable < charCount) {
|
|
|
1111 |
le_int32 nextSyllable = findSyllable(classTable, chars, beginSyllable, charCount);
|
|
|
1112 |
|
|
|
1113 |
output.reset();
|
|
|
1114 |
|
|
|
1115 |
// Find the First Consonant
|
|
|
1116 |
for ( firstConsonant = beginSyllable ; firstConsonant < nextSyllable ; firstConsonant++ ) {
|
|
|
1117 |
if ( classTable->isConsonant(chars[firstConsonant]) ) {
|
|
|
1118 |
break;
|
|
|
1119 |
}
|
|
|
1120 |
}
|
|
|
1121 |
|
|
|
1122 |
// Find the base consonant
|
|
|
1123 |
|
|
|
1124 |
baseConsonant = nextSyllable - 1;
|
|
|
1125 |
secondConsonant = firstConsonant;
|
|
|
1126 |
|
|
|
1127 |
// TODO: Use Dynamic Properties for hasBelowBaseForm and hasPostBaseForm()
|
|
|
1128 |
|
|
|
1129 |
while ( baseConsonant > firstConsonant ) {
|
|
|
1130 |
if ( classTable->isConsonant(chars[baseConsonant]) &&
|
|
|
1131 |
!classTable->hasBelowBaseForm(chars[baseConsonant]) &&
|
|
|
1132 |
!classTable->hasPostBaseForm(chars[baseConsonant]) ) {
|
|
|
1133 |
break;
|
|
|
1134 |
}
|
|
|
1135 |
else {
|
|
|
1136 |
if ( classTable->isConsonant(chars[baseConsonant]) ) {
|
|
|
1137 |
secondConsonant = baseConsonant;
|
|
|
1138 |
}
|
|
|
1139 |
baseConsonant--;
|
|
|
1140 |
}
|
|
|
1141 |
}
|
|
|
1142 |
|
|
|
1143 |
// If the syllable starts with Ra + Halant ( in a script that has Reph ) and has more than one
|
|
|
1144 |
// consonant, Ra is excluced from candidates for base consonants
|
|
|
1145 |
|
|
|
1146 |
if ( classTable->isReph(chars[beginSyllable]) &&
|
|
|
1147 |
beginSyllable+1 < nextSyllable && classTable->isVirama(chars[beginSyllable+1]) &&
|
|
|
1148 |
secondConsonant != firstConsonant) {
|
|
|
1149 |
baseConsonant = secondConsonant;
|
|
|
1150 |
}
|
|
|
1151 |
|
|
|
1152 |
// Populate the output
|
|
|
1153 |
for ( i = beginSyllable ; i < nextSyllable ; i++ ) {
|
|
|
1154 |
|
|
|
1155 |
// Handle invalid combinartions
|
|
|
1156 |
|
|
|
1157 |
if ( classTable->isVirama(chars[beginSyllable]) ||
|
|
|
1158 |
classTable->isMatra(chars[beginSyllable]) ||
|
|
|
1159 |
classTable->isVowelModifier(chars[beginSyllable]) ||
|
|
|
1160 |
classTable->isNukta(chars[beginSyllable]) ) {
|
|
|
1161 |
output.writeChar(C_DOTTED_CIRCLE,beginSyllable,basicShapingFormsMask);
|
|
|
1162 |
inv_count++;
|
|
|
1163 |
}
|
|
|
1164 |
output.writeChar(chars[i],i, basicShapingFormsMask);
|
|
|
1165 |
|
|
|
1166 |
}
|
|
|
1167 |
|
|
|
1168 |
// Adjust features and set syllable structure bits
|
|
|
1169 |
|
|
|
1170 |
for ( i = beginSyllable ; i < nextSyllable ; i++ ) {
|
|
|
1171 |
|
|
|
1172 |
FeatureMask outMask = output.getFeatures(i+inv_count);
|
|
|
1173 |
FeatureMask saveMask = outMask;
|
|
|
1174 |
|
|
|
1175 |
// Since reph can only validly occur at the beginning of a syllable
|
|
|
1176 |
// We only apply it to the first 2 characters in the syllable, to keep it from
|
|
|
1177 |
// conflicting with other features ( i.e. rkrf )
|
|
|
1178 |
|
|
|
1179 |
// TODO : Use the dynamic property for determining isREPH
|
|
|
1180 |
if ( i == beginSyllable && i < baseConsonant && classTable->isReph(chars[i]) &&
|
|
|
1181 |
i+1 < nextSyllable && classTable->isVirama(chars[i+1])) {
|
|
|
1182 |
outMask |= rphfFeatureMask;
|
|
|
1183 |
outMask |= rephConsonantMask;
|
|
|
1184 |
output.setFeatures(i+1+inv_count,outMask);
|
|
|
1185 |
|
|
|
1186 |
}
|
|
|
1187 |
|
|
|
1188 |
if ( i == baseConsonant ) {
|
|
|
1189 |
outMask |= baseConsonantMask;
|
|
|
1190 |
}
|
|
|
1191 |
|
|
|
1192 |
if ( classTable->isMatra(chars[i])) {
|
|
|
1193 |
outMask |= matraMask;
|
|
|
1194 |
if ( classTable->hasAboveBaseForm(chars[i])) {
|
|
|
1195 |
outMask |= aboveBasePosition;
|
|
|
1196 |
} else if ( classTable->hasBelowBaseForm(chars[i])) {
|
|
|
1197 |
outMask |= belowBasePosition;
|
|
|
1198 |
}
|
|
|
1199 |
}
|
|
|
1200 |
|
|
|
1201 |
// Don't apply half form to virama that stands alone at the end of a syllable
|
|
|
1202 |
// to prevent half forms from forming when syllable ends with virama
|
|
|
1203 |
|
|
|
1204 |
if ( classTable->isVirama(chars[i]) && (i+1 == nextSyllable) ) {
|
|
|
1205 |
outMask ^= halfFeatureMask;
|
|
|
1206 |
if ( classTable->isConsonant(chars[i-1]) ) {
|
|
|
1207 |
FeatureMask tmp = output.getFeatures(i-1+inv_count);
|
|
|
1208 |
tmp ^= halfFeatureMask;
|
|
|
1209 |
output.setFeatures(i-1+inv_count,tmp);
|
|
|
1210 |
}
|
|
|
1211 |
}
|
|
|
1212 |
|
|
|
1213 |
if ( outMask != saveMask ) {
|
|
|
1214 |
output.setFeatures(i+inv_count,outMask);
|
|
|
1215 |
}
|
|
|
1216 |
}
|
|
|
1217 |
|
|
|
1218 |
output.decomposeReorderMatras(classTable,beginSyllable,nextSyllable,inv_count);
|
|
|
1219 |
|
|
|
1220 |
beginSyllable = nextSyllable;
|
|
|
1221 |
}
|
|
|
1222 |
|
|
|
1223 |
|
|
|
1224 |
return output.getOutputIndex();
|
|
|
1225 |
}
|
|
|
1226 |
|
|
|
1227 |
|
|
|
1228 |
void IndicReordering::getDynamicProperties( DynamicProperties *, const IndicClassTable *classTable ) {
|
|
|
1229 |
|
|
|
1230 |
|
|
|
1231 |
LEUnicode currentChar;
|
|
|
1232 |
LEUnicode workChars[2];
|
|
|
1233 |
LEGlyphStorage workGlyphs;
|
|
|
1234 |
|
|
|
1235 |
IndicReorderingOutput workOutput(workChars, workGlyphs, NULL);
|
|
|
1236 |
|
|
|
1237 |
//le_int32 offset = 0;
|
|
|
1238 |
|
|
16889
|
1239 |
#if 0
|
|
|
1240 |
// TODO: Should this section of code have actually been doing something?
|
|
7486
|
1241 |
// First find the relevant virama for the script we are dealing with
|
|
16889
|
1242 |
LEUnicode virama;
|
|
7486
|
1243 |
for ( currentChar = classTable->firstChar ; currentChar <= classTable->lastChar ; currentChar++ ) {
|
|
|
1244 |
if ( classTable->isVirama(currentChar)) {
|
|
|
1245 |
virama = currentChar;
|
|
|
1246 |
break;
|
|
|
1247 |
}
|
|
|
1248 |
}
|
|
16889
|
1249 |
#endif
|
|
7486
|
1250 |
|
|
|
1251 |
for ( currentChar = classTable->firstChar ; currentChar <= classTable->lastChar ; currentChar++ ) {
|
|
|
1252 |
if ( classTable->isConsonant(currentChar)) {
|
|
|
1253 |
workOutput.reset();
|
|
|
1254 |
}
|
|
|
1255 |
}
|
|
|
1256 |
|
|
|
1257 |
|
|
|
1258 |
}
|
|
|
1259 |
|
|
3935
|
1260 |
U_NAMESPACE_END
|