projects / apple / icu.git / blame
| Commit | Line | Data |
|---|---|---|
| b75a7d8f | 1 | /* |
| b75a7d8f | 2 | * |
| 57a6839d | 3 | * (C) Copyright IBM Corp. 1998-2013 - All Rights Reserved |
| b75a7d8f A |
4 | * |
| 5 | */ | |
| 6 | ||
| 7 | #include "LETypes.h" | |
| 8 | #include "MorphTables.h" | |
| 9 | #include "StateTables.h" | |
| 10 | #include "MorphStateTables.h" | |
| 11 | #include "SubtableProcessor.h" | |
| 12 | #include "StateTableProcessor.h" | |
| 13 | #include "ContextualGlyphSubstProc.h" | |
| 374ca955 | 14 | #include "LEGlyphStorage.h" |
| b75a7d8f A |
15 | #include "LESwaps.h" |
| 16 | ||
| 17 | U_NAMESPACE_BEGIN | |
| 18 | ||
| 374ca955 | 19 | UOBJECT_DEFINE_RTTI_IMPLEMENTATION(ContextualGlyphSubstitutionProcessor) |
| b75a7d8f | 20 | |
| 57a6839d A |
21 | ContextualGlyphSubstitutionProcessor::ContextualGlyphSubstitutionProcessor(const LEReferenceTo<MorphSubtableHeader> &morphSubtableHeader, LEErrorCode &success) |
| 22 | : StateTableProcessor(morphSubtableHeader, success), entryTable(), contextualGlyphSubstitutionHeader(morphSubtableHeader, success) | |
| b75a7d8f | 23 | { |
| 57a6839d A |
24 | contextualGlyphSubstitutionHeader.orphan(); |
| 25 | substitutionTableOffset = SWAPW(contextualGlyphSubstitutionHeader->substitutionTableOffset); | |
| 26 | ||
| 27 | ||
| 28 | entryTable = LEReferenceToArrayOf<ContextualGlyphSubstitutionStateEntry>(stateTableHeader, success, | |
| 29 | (const ContextualGlyphSubstitutionStateEntry*)(&stateTableHeader->stHeader), | |
| 30 | entryTableOffset, LE_UNBOUNDED_ARRAY); | |
| 31 | int16Table = LEReferenceToArrayOf<le_int16>(stateTableHeader, success, (const le_int16*)(&stateTableHeader->stHeader), | |
| 32 | 0, LE_UNBOUNDED_ARRAY); // rest of the table as le_int16s | |
| b75a7d8f A |
33 | } |
| 34 | ||
| 35 | ContextualGlyphSubstitutionProcessor::~ContextualGlyphSubstitutionProcessor() | |
| 36 | { | |
| 37 | } | |
| 38 | ||
| 39 | void ContextualGlyphSubstitutionProcessor::beginStateTable() | |
| 40 | { | |
| 41 | markGlyph = 0; | |
| 42 | } | |
| 43 | ||
| 374ca955 | 44 | ByteOffset ContextualGlyphSubstitutionProcessor::processStateEntry(LEGlyphStorage &glyphStorage, le_int32 &currGlyph, EntryTableIndex index) |
| b75a7d8f | 45 | { |
| 57a6839d A |
46 | LEErrorCode success = LE_NO_ERROR; |
| 47 | const ContextualGlyphSubstitutionStateEntry *entry = entryTable.getAlias(index, success); | |
| 48 | ByteOffset newState = SWAPW(entry->newStateOffset); | |
| 49 | le_int16 flags = SWAPW(entry->flags); | |
| 50 | WordOffset markOffset = SWAPW(entry->markOffset); | |
| 51 | WordOffset currOffset = SWAPW(entry->currOffset); | |
| 52 | ||
| 53 | if (markOffset != 0 && LE_SUCCESS(success)) { | |
| 54 | LEGlyphID mGlyph = glyphStorage[markGlyph]; | |
| 55 | TTGlyphID newGlyph = SWAPW(int16Table.getObject(markOffset + LE_GET_GLYPH(mGlyph), success)); // whew. | |
| 56 | ||
| 57 | glyphStorage[markGlyph] = LE_SET_GLYPH(mGlyph, newGlyph); | |
| 58 | } | |
| 59 | ||
| 60 | if (currOffset != 0) { | |
| 61 | LEGlyphID thisGlyph = glyphStorage[currGlyph]; | |
| 62 | TTGlyphID newGlyph = SWAPW(int16Table.getObject(currOffset + LE_GET_GLYPH(thisGlyph), success)); // whew. | |
| 63 | ||
| 64 | glyphStorage[currGlyph] = LE_SET_GLYPH(thisGlyph, newGlyph); | |
| 65 | } | |
| b75a7d8f A |
66 | |
| 67 | if (flags & cgsSetMark) { | |
| 68 | markGlyph = currGlyph; | |
| 69 | } | |
| 70 | ||
| 71 | if (!(flags & cgsDontAdvance)) { | |
| 72 | // should handle reverse too! | |
| 73 | currGlyph += 1; | |
| 74 | } | |
| 75 | ||
| 76 | return newState; | |
| 77 | } | |
| 78 | ||
| 79 | void ContextualGlyphSubstitutionProcessor::endStateTable() | |
| 80 | { | |
| 81 | } | |
| 82 | ||
| 83 | U_NAMESPACE_END |