| | 1 | /* |
| | 2 | * %W% %W% |
| | 3 | * |
| | 4 | * (C) Copyright IBM Corp. 1998 - 2004 - All Rights Reserved |
| | 5 | * |
| | 6 | */ |
| | 7 | |
| | 8 | |
| | 9 | #include "LETypes.h" |
| | 10 | #include "LayoutTables.h" |
| | 11 | #include "MorphTables.h" |
| | 12 | #include "SubtableProcessor.h" |
| | 13 | #include "IndicRearrangementProcessor.h" |
| | 14 | #include "ContextualGlyphSubstProc.h" |
| | 15 | #include "LigatureSubstProc.h" |
| | 16 | #include "NonContextualGlyphSubstProc.h" |
| | 17 | //#include "ContextualGlyphInsertionProcessor.h" |
| | 18 | #include "LEGlyphStorage.h" |
| | 19 | #include "LESwaps.h" |
| | 20 | |
| | 21 | U_NAMESPACE_BEGIN |
| | 22 | |
| | 23 | void MorphTableHeader::process(LEGlyphStorage &glyphStorage) const |
| | 24 | { |
| | 25 | const ChainHeader *chainHeader = chains; |
| | 26 | le_uint32 chainCount = SWAPL(this->nChains); |
| | 27 | le_uint32 chain; |
| | 28 | |
| | 29 | for (chain = 0; chain < chainCount; chain += 1) { |
| | 30 | FeatureFlags defaultFlags = SWAPL(chainHeader->defaultFlags); |
| | 31 | le_uint32 chainLength = SWAPL(chainHeader->chainLength); |
| | 32 | le_int16 nFeatureEntries = SWAPW(chainHeader->nFeatureEntries); |
| | 33 | le_int16 nSubtables = SWAPW(chainHeader->nSubtables); |
| | 34 | const MorphSubtableHeader *subtableHeader = |
| | 35 | (const MorphSubtableHeader *)&chainHeader->featureTable[nFeatureEntries]; |
| | 36 | le_int16 subtable; |
| | 37 | |
| | 38 | for (subtable = 0; subtable < nSubtables; subtable += 1) { |
| | 39 | le_int16 length = SWAPW(subtableHeader->length); |
| | 40 | SubtableCoverage coverage = SWAPW(subtableHeader->coverage); |
| | 41 | FeatureFlags subtableFeatures = SWAPL(subtableHeader->subtableFeatures); |
| | 42 | |
| | 43 | // should check coverage more carefully... |
| | 44 | if ((coverage & scfVertical) == 0 && (subtableFeatures & defaultFlags) != 0) { |
| | 45 | subtableHeader->process(glyphStorage); |
| | 46 | } |
| | 47 | |
| | 48 | subtableHeader = (const MorphSubtableHeader *) ((char *)subtableHeader + length); |
| | 49 | } |
| | 50 | |
| | 51 | chainHeader = (const ChainHeader *)((char *)chainHeader + chainLength); |
| | 52 | } |
| | 53 | } |
| | 54 | |
| | 55 | void MorphSubtableHeader::process(LEGlyphStorage &glyphStorage) const |
| | 56 | { |
| | 57 | SubtableProcessor *processor = NULL; |
| | 58 | |
| | 59 | switch (SWAPW(coverage) & scfTypeMask) |
| | 60 | { |
| | 61 | case mstIndicRearrangement: |
| | 62 | processor = new IndicRearrangementProcessor(this); |
| | 63 | break; |
| | 64 | |
| | 65 | case mstContextualGlyphSubstitution: |
| | 66 | processor = new ContextualGlyphSubstitutionProcessor(this); |
| | 67 | break; |
| | 68 | |
| | 69 | case mstLigatureSubstitution: |
| | 70 | processor = new LigatureSubstitutionProcessor(this); |
| | 71 | break; |
| | 72 | |
| | 73 | case mstReservedUnused: |
| | 74 | break; |
| | 75 | |
| | 76 | case mstNonContextualGlyphSubstitution: |
| | 77 | processor = NonContextualGlyphSubstitutionProcessor::createInstance(this); |
| | 78 | break; |
| | 79 | |
| | 80 | /* |
| | 81 | case mstContextualGlyphInsertion: |
| | 82 | processor = new ContextualGlyphInsertionProcessor(this); |
| | 83 | break; |
| | 84 | */ |
| | 85 | |
| | 86 | default: |
| | 87 | break; |
| | 88 | } |
| | 89 | |
| | 90 | if (processor != NULL) { |
| | 91 | processor->process(glyphStorage); |
| | 92 | delete processor; |
| | 93 | } |
| | 94 | } |
| | 95 | |
| | 96 | U_NAMESPACE_END |
projects / apple / icu.git / blame_incremental