+++ /dev/null
-/*
- *
- * (C) Copyright IBM Corp. and others 1998-2016 - All Rights Reserved
- *
- */
-
-#include "LETypes.h"
-#include "MorphTables.h"
-#include "StateTables.h"
-#include "MorphStateTables.h"
-#include "SubtableProcessor2.h"
-#include "StateTableProcessor2.h"
-#include "ContextualGlyphSubstProc2.h"
-#include "LEGlyphStorage.h"
-#include "LESwaps.h"
-
-U_NAMESPACE_BEGIN
-
-UOBJECT_DEFINE_RTTI_IMPLEMENTATION(ContextualGlyphSubstitutionProcessor2)
-
-ContextualGlyphSubstitutionProcessor2::ContextualGlyphSubstitutionProcessor2(
- const LEReferenceTo<MorphSubtableHeader2> &morphSubtableHeader, LEErrorCode &success)
- : StateTableProcessor2(morphSubtableHeader, success), contextualGlyphHeader(morphSubtableHeader, success)
-{
- if(LE_FAILURE(success)) return;
- le_uint32 perGlyphTableOffset = SWAPL(contextualGlyphHeader->perGlyphTableOffset);
- perGlyphTable = LEReferenceToArrayOf<le_uint32> (stHeader, success, perGlyphTableOffset, LE_UNBOUNDED_ARRAY);
- entryTable = LEReferenceToArrayOf<ContextualGlyphStateEntry2>(stHeader, success, entryTableOffset, LE_UNBOUNDED_ARRAY);
-}
-
-ContextualGlyphSubstitutionProcessor2::~ContextualGlyphSubstitutionProcessor2()
-{
-}
-
-void ContextualGlyphSubstitutionProcessor2::beginStateTable()
-{
- markGlyph = 0;
-}
-
-le_uint16 ContextualGlyphSubstitutionProcessor2::processStateEntry(LEGlyphStorage &glyphStorage, le_int32 &currGlyph,
- EntryTableIndex2 index, LEErrorCode &success)
-{
- if(LE_FAILURE(success)) return 0;
- const ContextualGlyphStateEntry2 *entry = entryTable.getAlias(index, success);
- if(LE_FAILURE(success)) return 0;
- le_uint16 newState = SWAPW(entry->newStateIndex);
- le_uint16 flags = SWAPW(entry->flags);
- le_int16 markIndex = SWAPW(entry->markIndex);
- le_int16 currIndex = SWAPW(entry->currIndex);
-
- if (markIndex != -1) {
- le_uint32 offset = SWAPL(perGlyphTable(markIndex, success));
- LEGlyphID mGlyph = glyphStorage[markGlyph];
- TTGlyphID newGlyph = lookup(offset, mGlyph, success);
- glyphStorage[markGlyph] = LE_SET_GLYPH(mGlyph, newGlyph);
- }
-
- if (currIndex != -1) {
- le_uint32 offset = SWAPL(perGlyphTable(currIndex, success));
- LEGlyphID thisGlyph = glyphStorage[currGlyph];
- TTGlyphID newGlyph = lookup(offset, thisGlyph, success);
- glyphStorage[currGlyph] = LE_SET_GLYPH(thisGlyph, newGlyph);
- }
-
- if (flags & cgsSetMark) {
- markGlyph = currGlyph;
- }
-
- if (!(flags & cgsDontAdvance)) {
- currGlyph += dir;
- }
-
- return newState;
-}
-
-TTGlyphID ContextualGlyphSubstitutionProcessor2::lookup(le_uint32 offset, LEGlyphID gid, LEErrorCode &success)
-{
- TTGlyphID newGlyph = 0xFFFF;
- if(LE_FAILURE(success)) return newGlyph;
- LEReferenceTo<LookupTableBase> lookupTable(perGlyphTable, success, offset);
- if(LE_FAILURE(success)) return newGlyph;
- le_int16 format = SWAPW(lookupTable->format);
-
- switch (format) {
- case ltfSimpleArray: {
-#ifdef TEST_FORMAT
- // Disabled pending for design review
- LEReferenceTo<SimpleArrayLookupTable> lookupTable0(lookupTable, success);
- LEReferenceToArrayOf<LookupValue> valueArray(lookupTable0, success, &lookupTable0->valueArray[0], LE_UNBOUNDED_ARRAY);
- if(LE_FAILURE(success)) return newGlyph;
- TTGlyphID glyphCode = (TTGlyphID) LE_GET_GLYPH(gid);
- newGlyph = SWAPW(lookupTable0->valueArray(glyphCode, success));
-#endif
- break;
- }
- case ltfSegmentSingle: {
-#ifdef TEST_FORMAT
- // Disabled pending for design review
- LEReferenceTo<SegmentSingleLookupTable> lookupTable2 = (SegmentSingleLookupTable *) lookupTable;
- const LookupSegment *segment = lookupTable2->lookupSegment(lookupTable2->segments, gid);
- if (segment != NULL) {
- newGlyph = SWAPW(segment->value);
- }
-#endif
- break;
- }
- case ltfSegmentArray: {
- //printf("Context Lookup Table Format4: specific interpretation needed!\n");
- break;
- }
- case ltfSingleTable:
- {
-#ifdef TEST_FORMAT
- // Disabled pending for design review
- LEReferenceTo<SingleTableLookupTable> lookupTable6 = (SingleTableLookupTable *) lookupTable;
- const LEReferenceTo<LookupSingle> segment = lookupTable6->lookupSingle(lookupTable6->entries, gid);
- if (segment != NULL) {
- newGlyph = SWAPW(segment->value);
- }
-#endif
- break;
- }
- case ltfTrimmedArray: {
- LEReferenceTo<TrimmedArrayLookupTable> lookupTable8(lookupTable, success);
- if (LE_FAILURE(success)) return newGlyph;
- TTGlyphID firstGlyph = SWAPW(lookupTable8->firstGlyph);
- TTGlyphID glyphCount = SWAPW(lookupTable8->glyphCount);
- TTGlyphID lastGlyph = firstGlyph + glyphCount;
- TTGlyphID glyphCode = (TTGlyphID) LE_GET_GLYPH(gid);
- if ((glyphCode >= firstGlyph) && (glyphCode < lastGlyph)) {
- LEReferenceToArrayOf<LookupValue> valueArray(lookupTable8, success, &lookupTable8->valueArray[0], glyphCount);
- newGlyph = SWAPW(valueArray(glyphCode - firstGlyph, success));
- }
- }
- default:
- break;
- }
- return newGlyph;
-}
-
-void ContextualGlyphSubstitutionProcessor2::endStateTable()
-{
-}
-
-U_NAMESPACE_END