sl@0: /*
sl@0:  * %W% %W%
sl@0:  *
sl@0:  * (C) Copyright IBM Corp. 1998 - 2004 - All Rights Reserved
sl@0:  *
sl@0:  */
sl@0: 
sl@0: 
sl@0: #include "LETypes.h"
sl@0: #include "LayoutTables.h"
sl@0: #include "MorphTables.h"
sl@0: #include "SubtableProcessor.h"
sl@0: #include "IndicRearrangementProcessor.h"
sl@0: #include "ContextualGlyphSubstProc.h"
sl@0: #include "LigatureSubstProc.h"
sl@0: #include "NonContextualGlyphSubstProc.h"
sl@0: //#include "ContextualGlyphInsertionProcessor.h"
sl@0: #include "LEGlyphStorage.h"
sl@0: #include "LESwaps.h"
sl@0: 
sl@0: U_NAMESPACE_BEGIN
sl@0: 
sl@0: void MorphTableHeader::process(LEGlyphStorage &glyphStorage) const
sl@0: {
sl@0:     const ChainHeader *chainHeader = chains;
sl@0:     le_uint32 chainCount = SWAPL(this->nChains);
sl@0:     le_uint32 chain;
sl@0: 
sl@0:     for (chain = 0; chain < chainCount; chain += 1) {
sl@0:         FeatureFlags defaultFlags = SWAPL(chainHeader->defaultFlags);
sl@0:         le_uint32 chainLength = SWAPL(chainHeader->chainLength);
sl@0:         le_int16 nFeatureEntries = SWAPW(chainHeader->nFeatureEntries);
sl@0:         le_int16 nSubtables = SWAPW(chainHeader->nSubtables);
sl@0:         const MorphSubtableHeader *subtableHeader =
sl@0:             (const MorphSubtableHeader *)&chainHeader->featureTable[nFeatureEntries];
sl@0:         le_int16 subtable;
sl@0: 
sl@0:         for (subtable = 0; subtable < nSubtables; subtable += 1) {
sl@0:             le_int16 length = SWAPW(subtableHeader->length);
sl@0:             SubtableCoverage coverage = SWAPW(subtableHeader->coverage);
sl@0:             FeatureFlags subtableFeatures = SWAPL(subtableHeader->subtableFeatures);
sl@0: 
sl@0:             // should check coverage more carefully...
sl@0:             if ((coverage & scfVertical) == 0 && (subtableFeatures & defaultFlags) != 0) {
sl@0:                 subtableHeader->process(glyphStorage);
sl@0:             }
sl@0: 
sl@0:             subtableHeader = (const MorphSubtableHeader *) ((char *)subtableHeader + length);
sl@0:         }
sl@0: 
sl@0:         chainHeader = (const ChainHeader *)((char *)chainHeader + chainLength);
sl@0:     }
sl@0: }
sl@0: 
sl@0: void MorphSubtableHeader::process(LEGlyphStorage &glyphStorage) const
sl@0: {
sl@0:     SubtableProcessor *processor = NULL;
sl@0: 
sl@0:     switch (SWAPW(coverage) & scfTypeMask)
sl@0:     {
sl@0:     case mstIndicRearrangement:
sl@0:         processor = new IndicRearrangementProcessor(this);
sl@0:         break;
sl@0: 
sl@0:     case mstContextualGlyphSubstitution:
sl@0:         processor = new ContextualGlyphSubstitutionProcessor(this);
sl@0:         break;
sl@0: 
sl@0:     case mstLigatureSubstitution:
sl@0:         processor = new LigatureSubstitutionProcessor(this);
sl@0:         break;
sl@0: 
sl@0:     case mstReservedUnused:
sl@0:         break;
sl@0: 
sl@0:     case mstNonContextualGlyphSubstitution:
sl@0:         processor = NonContextualGlyphSubstitutionProcessor::createInstance(this);
sl@0:         break;
sl@0: 
sl@0:     /*
sl@0:     case mstContextualGlyphInsertion:
sl@0:         processor = new ContextualGlyphInsertionProcessor(this);
sl@0:         break;
sl@0:     */
sl@0: 
sl@0:     default:
sl@0:         break;
sl@0:     }
sl@0: 
sl@0:     if (processor != NULL) {
sl@0:         processor->process(glyphStorage);
sl@0:         delete processor;
sl@0:     }
sl@0: }
sl@0: 
sl@0: U_NAMESPACE_END