projects / apple / icu.git / blame
| Commit | Line | Data |
|---|---|---|
| b75a7d8f A |
1 | /* |
| 2 | * %W% %W% | |
| 3 | * | |
| 374ca955 | 4 | * (C) Copyright IBM Corp. 1998 - 2004 - All Rights Reserved |
| b75a7d8f A |
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" | |
| 374ca955 | 18 | #include "LEGlyphStorage.h" |
| b75a7d8f A |
19 | #include "LESwaps.h" |
| 20 | ||
| 21 | U_NAMESPACE_BEGIN | |
| 22 | ||
| 374ca955 | 23 | void MorphTableHeader::process(LEGlyphStorage &glyphStorage) const |
| b75a7d8f A |
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) { | |
| 374ca955 | 45 | subtableHeader->process(glyphStorage); |
| b75a7d8f A |
46 | } |
| 47 | ||
| 48 | subtableHeader = (const MorphSubtableHeader *) ((char *)subtableHeader + length); | |
| 49 | } | |
| 50 | ||
| 51 | chainHeader = (const ChainHeader *)((char *)chainHeader + chainLength); | |
| 52 | } | |
| 53 | } | |
| 54 | ||
| 374ca955 | 55 | void MorphSubtableHeader::process(LEGlyphStorage &glyphStorage) const |
| b75a7d8f A |
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) { | |
| 374ca955 | 91 | processor->process(glyphStorage); |
| b75a7d8f A |
92 | delete processor; |
| 93 | } | |
| 94 | } | |
| 95 | ||
| 96 | U_NAMESPACE_END |