| /* |
| * |
| * (C) Copyright IBM Corp. 1998-2013 - All Rights Reserved |
| * |
| */ |
| |
| #include "LETypes.h" |
| #include "MorphTables.h" |
| #include "StateTables.h" |
| #include "MorphStateTables.h" |
| #include "SubtableProcessor.h" |
| #include "StateTableProcessor.h" |
| #include "LEGlyphStorage.h" |
| #include "LESwaps.h" |
| |
| U_NAMESPACE_BEGIN |
| |
| StateTableProcessor::StateTableProcessor() |
| { |
| } |
| |
| StateTableProcessor::StateTableProcessor(const LEReferenceTo<MorphSubtableHeader> &morphSubtableHeader, LEErrorCode &success) |
| : SubtableProcessor(morphSubtableHeader, success), stateTableHeader(morphSubtableHeader, success), |
| stHeader(stateTableHeader, success, (const StateTableHeader*)&stateTableHeader->stHeader) |
| { |
| if(LE_FAILURE(success)) return; |
| stateSize = SWAPW(stateTableHeader->stHeader.stateSize); |
| classTableOffset = SWAPW(stateTableHeader->stHeader.classTableOffset); |
| stateArrayOffset = SWAPW(stateTableHeader->stHeader.stateArrayOffset); |
| entryTableOffset = SWAPW(stateTableHeader->stHeader.entryTableOffset); |
| |
| classTable = LEReferenceTo<ClassTable>(stateTableHeader, success, ((char *) &stateTableHeader->stHeader + classTableOffset)); |
| if(LE_FAILURE(success)) return; |
| firstGlyph = SWAPW(classTable->firstGlyph); |
| lastGlyph = firstGlyph + SWAPW(classTable->nGlyphs); |
| } |
| |
| StateTableProcessor::~StateTableProcessor() |
| { |
| } |
| |
| void StateTableProcessor::process(LEGlyphStorage &glyphStorage, LEErrorCode &success) |
| { |
| if (LE_FAILURE(success)) return; |
| LE_STATE_PATIENCE_INIT(); |
| |
| // Start at state 0 |
| // XXX: How do we know when to start at state 1? |
| ByteOffset currentState = stateArrayOffset; |
| |
| // XXX: reverse? |
| le_int32 currGlyph = 0; |
| le_int32 glyphCount = glyphStorage.getGlyphCount(); |
| |
| beginStateTable(); |
| |
| while (currGlyph <= glyphCount) { |
| if(LE_STATE_PATIENCE_DECR()) break; // patience exceeded. |
| ClassCode classCode = classCodeOOB; |
| if (currGlyph == glyphCount) { |
| // XXX: How do we handle EOT vs. EOL? |
| classCode = classCodeEOT; |
| } else { |
| TTGlyphID glyphCode = (TTGlyphID) LE_GET_GLYPH(glyphStorage[currGlyph]); |
| |
| if (glyphCode == 0xFFFF) { |
| classCode = classCodeDEL; |
| } else if ((glyphCode >= firstGlyph) && (glyphCode < lastGlyph)) { |
| classCode = classTable->classArray[glyphCode - firstGlyph]; |
| } |
| } |
| |
| LEReferenceToArrayOf<EntryTableIndex> stateArray(stHeader, success, currentState, LE_UNBOUNDED_ARRAY); |
| EntryTableIndex entryTableIndex = stateArray.getObject((le_uint8)classCode, success); |
| LE_STATE_PATIENCE_CURR(le_int32, currGlyph); |
| currentState = processStateEntry(glyphStorage, currGlyph, entryTableIndex); |
| LE_STATE_PATIENCE_INCR(currGlyph); |
| } |
| |
| endStateTable(); |
| } |
| |
| U_NAMESPACE_END |