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* (C) Copyright IBM Corp. 1998-2009 - All Rights Reserved
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#ifndef __INDICREORDERING_H
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#define __INDICREORDERING_H
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#include "OpenTypeTables.h"
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// Characters that get refered to by name...
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#define C_SIGN_ZWNJ 0x200C
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#define C_SIGN_ZWJ 0x200D
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// Character class values
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#define CC_RESERVED 0U
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#define CC_VOWEL_MODIFIER 1U
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#define CC_STRESS_MARK 2U
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#define CC_INDEPENDENT_VOWEL 3U
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#define CC_INDEPENDENT_VOWEL_2 4U
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#define CC_INDEPENDENT_VOWEL_3 5U
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#define CC_CONSONANT 6U
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#define CC_CONSONANT_WITH_NUKTA 7U
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#define CC_DEPENDENT_VOWEL 9U
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#define CC_SPLIT_VOWEL_PIECE_1 10U
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#define CC_SPLIT_VOWEL_PIECE_2 11U
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#define CC_SPLIT_VOWEL_PIECE_3 12U
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#define CC_ZERO_WIDTH_MARK 14U
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#define CC_AL_LAKUNA 15U
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// Character class flags
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#define CF_CLASS_MASK 0x0000FFFFU
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#define CF_CONSONANT 0x80000000U
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#define CF_REPH 0x40000000U
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#define CF_VATTU 0x20000000U
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#define CF_BELOW_BASE 0x10000000U
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#define CF_POST_BASE 0x08000000U
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#define CF_LENGTH_MARK 0x04000000U
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#define CF_PRE_BASE 0x02000000U
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#define CF_POS_BEFORE 0x00300000U
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#define CF_POS_BELOW 0x00200000U
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#define CF_POS_ABOVE 0x00100000U
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#define CF_POS_AFTER 0x00000000U
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#define CF_POS_MASK 0x00300000U
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#define CF_INDEX_MASK 0x000F0000U
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#define CF_INDEX_SHIFT 16
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#define SF_MATRAS_AFTER_BASE 0x80000000U
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#define SF_REPH_AFTER_BELOW 0x40000000U
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#define SF_EYELASH_RA 0x20000000U
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#define SF_MPRE_FIXUP 0x10000000U
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#define SF_FILTER_ZERO_WIDTH 0x08000000U
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#define SF_POST_BASE_LIMIT_MASK 0x0000FFFFU
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#define SF_NO_POST_BASE_LIMIT 0x00007FFFU
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typedef LEUnicode SplitMatra[3];
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// Dynamic Properties ( v2 fonts only )
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typedef le_uint32 DynamicProperties;
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#define DP_REPH 0x80000000U
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#define DP_HALF 0x40000000U
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#define DP_PREF 0x20000000U
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#define DP_BLWF 0x10000000U
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#define DP_PSTF 0x08000000U
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struct IndicClassTable
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typedef le_uint32 CharClass;
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typedef le_uint32 ScriptFlags;
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le_int32 worstCaseExpansion;
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ScriptFlags scriptFlags;
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const CharClass *classTable;
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const SplitMatra *splitMatraTable;
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inline le_int32 getWorstCaseExpansion() const;
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inline le_bool getFilterZeroWidth() const;
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CharClass getCharClass(LEUnicode ch) const;
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inline const SplitMatra *getSplitMatra(CharClass charClass) const;
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inline le_bool isVowelModifier(LEUnicode ch) const;
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inline le_bool isStressMark(LEUnicode ch) const;
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inline le_bool isConsonant(LEUnicode ch) const;
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inline le_bool isReph(LEUnicode ch) const;
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inline le_bool isVirama(LEUnicode ch) const;
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inline le_bool isAlLakuna(LEUnicode ch) const;
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inline le_bool isNukta(LEUnicode ch) const;
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inline le_bool isVattu(LEUnicode ch) const;
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inline le_bool isMatra(LEUnicode ch) const;
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inline le_bool isSplitMatra(LEUnicode ch) const;
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inline le_bool isLengthMark(LEUnicode ch) const;
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inline le_bool hasPostOrBelowBaseForm(LEUnicode ch) const;
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inline le_bool hasPostBaseForm(LEUnicode ch) const;
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inline le_bool hasBelowBaseForm(LEUnicode ch) const;
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inline le_bool hasAboveBaseForm(LEUnicode ch) const;
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inline le_bool hasPreBaseForm(LEUnicode ch) const;
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inline static le_bool isVowelModifier(CharClass charClass);
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inline static le_bool isStressMark(CharClass charClass);
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inline static le_bool isConsonant(CharClass charClass);
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inline static le_bool isReph(CharClass charClass);
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inline static le_bool isVirama(CharClass charClass);
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inline static le_bool isAlLakuna(CharClass charClass);
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inline static le_bool isNukta(CharClass charClass);
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inline static le_bool isVattu(CharClass charClass);
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inline static le_bool isMatra(CharClass charClass);
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inline static le_bool isSplitMatra(CharClass charClass);
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inline static le_bool isLengthMark(CharClass charClass);
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inline static le_bool hasPostOrBelowBaseForm(CharClass charClass);
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inline static le_bool hasPostBaseForm(CharClass charClass);
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inline static le_bool hasBelowBaseForm(CharClass charClass);
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inline static le_bool hasAboveBaseForm(CharClass charClass);
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inline static le_bool hasPreBaseForm(CharClass charClass);
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static const IndicClassTable *getScriptClassTable(le_int32 scriptCode);
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class IndicReordering /* not : public UObject because all methods are static */ {
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static le_int32 getWorstCaseExpansion(le_int32 scriptCode);
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static le_bool getFilterZeroWidth(le_int32 scriptCode);
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static le_int32 reorder(const LEUnicode *theChars, le_int32 charCount, le_int32 scriptCode,
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LEUnicode *outChars, LEGlyphStorage &glyphStorage,
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MPreFixups **outMPreFixups, LEErrorCode& success);
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static void adjustMPres(MPreFixups *mpreFixups, LEGlyphStorage &glyphStorage, LEErrorCode& success);
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static le_int32 v2process(const LEUnicode *theChars, le_int32 charCount, le_int32 scriptCode,
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LEUnicode *outChars, LEGlyphStorage &glyphStorage);
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static const FeatureMap *getFeatureMap(le_int32 &count);
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static const FeatureMap *getv2FeatureMap(le_int32 &count);
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static void applyPresentationForms(LEGlyphStorage &glyphStorage, le_int32 count);
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static void finalReordering(LEGlyphStorage &glyphStorage, le_int32 count);
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static void getDynamicProperties(DynamicProperties *dProps, const IndicClassTable *classTable);
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// do not instantiate
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static le_int32 findSyllable(const IndicClassTable *classTable, const LEUnicode *chars, le_int32 prev, le_int32 charCount);
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inline le_int32 IndicClassTable::getWorstCaseExpansion() const
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return worstCaseExpansion;
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inline le_bool IndicClassTable::getFilterZeroWidth() const
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return (scriptFlags & SF_FILTER_ZERO_WIDTH) != 0;
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inline const SplitMatra *IndicClassTable::getSplitMatra(CharClass charClass) const
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le_int32 index = (charClass & CF_INDEX_MASK) >> CF_INDEX_SHIFT;
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return &splitMatraTable[index - 1];
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inline le_bool IndicClassTable::isVowelModifier(CharClass charClass)
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return (charClass & CF_CLASS_MASK) == CC_VOWEL_MODIFIER;
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inline le_bool IndicClassTable::isStressMark(CharClass charClass)
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return (charClass & CF_CLASS_MASK) == CC_STRESS_MARK;
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inline le_bool IndicClassTable::isConsonant(CharClass charClass)
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return (charClass & CF_CONSONANT) != 0;
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inline le_bool IndicClassTable::isReph(CharClass charClass)
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return (charClass & CF_REPH) != 0;
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inline le_bool IndicClassTable::isNukta(CharClass charClass)
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return (charClass & CF_CLASS_MASK) == CC_NUKTA;
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inline le_bool IndicClassTable::isVirama(CharClass charClass)
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return (charClass & CF_CLASS_MASK) == CC_VIRAMA;
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inline le_bool IndicClassTable::isAlLakuna(CharClass charClass)
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return (charClass & CF_CLASS_MASK) == CC_AL_LAKUNA;
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inline le_bool IndicClassTable::isVattu(CharClass charClass)
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return (charClass & CF_VATTU) != 0;
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inline le_bool IndicClassTable::isMatra(CharClass charClass)
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charClass &= CF_CLASS_MASK;
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return charClass >= CC_DEPENDENT_VOWEL && charClass <= CC_SPLIT_VOWEL_PIECE_3;
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inline le_bool IndicClassTable::isSplitMatra(CharClass charClass)
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return (charClass & CF_INDEX_MASK) != 0;
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inline le_bool IndicClassTable::isLengthMark(CharClass charClass)
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return (charClass & CF_LENGTH_MARK) != 0;
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inline le_bool IndicClassTable::hasPostOrBelowBaseForm(CharClass charClass)
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return (charClass & (CF_POST_BASE | CF_BELOW_BASE)) != 0;
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inline le_bool IndicClassTable::hasPostBaseForm(CharClass charClass)
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return (charClass & CF_POST_BASE) != 0;
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inline le_bool IndicClassTable::hasPreBaseForm(CharClass charClass)
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return (charClass & CF_PRE_BASE) != 0;
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inline le_bool IndicClassTable::hasBelowBaseForm(CharClass charClass)
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return (charClass & CF_BELOW_BASE) != 0;
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inline le_bool IndicClassTable::hasAboveBaseForm(CharClass charClass)
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return ((charClass & CF_POS_MASK) == CF_POS_ABOVE);
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inline le_bool IndicClassTable::isVowelModifier(LEUnicode ch) const
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return isVowelModifier(getCharClass(ch));
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inline le_bool IndicClassTable::isStressMark(LEUnicode ch) const
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return isStressMark(getCharClass(ch));
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inline le_bool IndicClassTable::isConsonant(LEUnicode ch) const
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return isConsonant(getCharClass(ch));
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inline le_bool IndicClassTable::isReph(LEUnicode ch) const
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return isReph(getCharClass(ch));
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inline le_bool IndicClassTable::isVirama(LEUnicode ch) const
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return isVirama(getCharClass(ch));
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inline le_bool IndicClassTable::isAlLakuna(LEUnicode ch) const
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return isAlLakuna(getCharClass(ch));
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inline le_bool IndicClassTable::isNukta(LEUnicode ch) const
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return isNukta(getCharClass(ch));
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inline le_bool IndicClassTable::isVattu(LEUnicode ch) const
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return isVattu(getCharClass(ch));
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inline le_bool IndicClassTable::isMatra(LEUnicode ch) const
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return isMatra(getCharClass(ch));
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inline le_bool IndicClassTable::isSplitMatra(LEUnicode ch) const
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return isSplitMatra(getCharClass(ch));
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inline le_bool IndicClassTable::isLengthMark(LEUnicode ch) const
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return isLengthMark(getCharClass(ch));
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inline le_bool IndicClassTable::hasPostOrBelowBaseForm(LEUnicode ch) const
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return hasPostOrBelowBaseForm(getCharClass(ch));
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inline le_bool IndicClassTable::hasPostBaseForm(LEUnicode ch) const
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return hasPostBaseForm(getCharClass(ch));
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inline le_bool IndicClassTable::hasBelowBaseForm(LEUnicode ch) const
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return hasBelowBaseForm(getCharClass(ch));
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inline le_bool IndicClassTable::hasPreBaseForm(LEUnicode ch) const
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return hasPreBaseForm(getCharClass(ch));
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inline le_bool IndicClassTable::hasAboveBaseForm(LEUnicode ch) const
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return hasAboveBaseForm(getCharClass(ch));