+++ /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 "LEGlyphStorage.h"
-#include "LESwaps.h"
-#include "LookupTables.h"
-
-U_NAMESPACE_BEGIN
-
-StateTableProcessor2::StateTableProcessor2()
-{
-}
-
-StateTableProcessor2::StateTableProcessor2(const LEReferenceTo<MorphSubtableHeader2> &morphSubtableHeader, LEErrorCode &success)
- : SubtableProcessor2(morphSubtableHeader, success),
- dir(1),
- format(0),
- nClasses(0),
- classTableOffset(0),
- stateArrayOffset(0),
- entryTableOffset(0),
- classTable(),
- stateArray(),
- stateTableHeader(morphSubtableHeader, success),
- stHeader(stateTableHeader, success, (const StateTableHeader2*)&stateTableHeader->stHeader)
-{
- if (LE_FAILURE(success)) {
- return;
- }
- nClasses = SWAPL(stHeader->nClasses);
- classTableOffset = SWAPL(stHeader->classTableOffset);
- stateArrayOffset = SWAPL(stHeader->stateArrayOffset);
- entryTableOffset = SWAPL(stHeader->entryTableOffset);
-
- classTable = LEReferenceTo<LookupTableBase>(stHeader, success, classTableOffset);
- format = SWAPW(classTable->format);
-
- stateArray = LEReferenceToArrayOf<EntryTableIndex2>(stHeader, success, stateArrayOffset, LE_UNBOUNDED_ARRAY);
-}
-
-StateTableProcessor2::~StateTableProcessor2()
-{
-}
-
-void StateTableProcessor2::process(LEGlyphStorage &glyphStorage, LEErrorCode &success)
-{
- if (LE_FAILURE(success)) return;
- // Start at state 0
- // XXX: How do we know when to start at state 1?
- le_uint16 currentState = 0;
- le_int32 glyphCount = glyphStorage.getGlyphCount();
-
- LE_STATE_PATIENCE_INIT();
-
- le_int32 currGlyph = 0;
- if ((coverage & scfReverse2) != 0) { // process glyphs in descending order
- currGlyph = glyphCount - 1;
- dir = -1;
- } else {
- dir = 1;
- }
-
- beginStateTable();
- switch (format) {
- case ltfSimpleArray: {
-#ifdef TEST_FORMAT
- LEReferenceTo<SimpleArrayLookupTable> lookupTable0(classTable, success);
- if(LE_FAILURE(success)) break;
- while ((dir == 1 && currGlyph <= glyphCount) || (dir == -1 && currGlyph >= -1)) {
- if (LE_FAILURE(success)) break;
- if (LE_STATE_PATIENCE_DECR()) {
- LE_DEBUG_BAD_FONT("patience exceeded - state table not moving")
- break; // patience exceeded.
- }
- LookupValue classCode = classCodeOOB;
- if (currGlyph == glyphCount || currGlyph == -1) {
- // XXX: How do we handle EOT vs. EOL?
- classCode = classCodeEOT;
- } else {
- LEGlyphID gid = glyphStorage[currGlyph];
- TTGlyphID glyphCode = (TTGlyphID) LE_GET_GLYPH(gid);
-
- if (glyphCode == 0xFFFF) {
- classCode = classCodeDEL;
- } else {
- classCode = SWAPW(lookupTable0->valueArray[gid]);
- }
- }
- EntryTableIndex2 entryTableIndex = SWAPW(stateArray(classCode + currentState * nClasses, success));
- LE_STATE_PATIENCE_CURR(le_int32, currGlyph);
- currentState = processStateEntry(glyphStorage, currGlyph, entryTableIndex); // return a zero-based index instead of a byte offset
- LE_STATE_PATIENCE_INCR(currGlyph);
- }
-#endif
- break;
- }
- case ltfSegmentSingle: {
- LEReferenceTo<SegmentSingleLookupTable> lookupTable2(classTable, success);
- if(LE_FAILURE(success)) break;
- while ((dir == 1 && currGlyph <= glyphCount) || (dir == -1 && currGlyph >= -1)) {
- if (LE_FAILURE(success)) break;
- if (LE_STATE_PATIENCE_DECR()) {
- LE_DEBUG_BAD_FONT("patience exceeded - state table not moving")
- break; // patience exceeded.
- }
- LookupValue classCode = classCodeOOB;
- if (currGlyph == glyphCount || currGlyph == -1) {
- // XXX: How do we handle EOT vs. EOL?
- classCode = classCodeEOT;
- } else {
- LEGlyphID gid = glyphStorage[currGlyph];
- TTGlyphID glyphCode = (TTGlyphID) LE_GET_GLYPH(gid);
-
- if (glyphCode == 0xFFFF) {
- classCode = classCodeDEL;
- } else {
- const LookupSegment *segment =
- lookupTable2->lookupSegment(lookupTable2, lookupTable2->segments, gid, success);
- if (segment != NULL && LE_SUCCESS(success)) {
- classCode = SWAPW(segment->value);
- }
- }
- }
- EntryTableIndex2 entryTableIndex = SWAPW(stateArray(classCode + currentState * nClasses,success));
- LE_STATE_PATIENCE_CURR(le_int32, currGlyph);
- currentState = processStateEntry(glyphStorage, currGlyph, entryTableIndex, success);
- LE_STATE_PATIENCE_INCR(currGlyph);
- }
- break;
- }
- case ltfSegmentArray: {
- //printf("Lookup Table Format4: specific interpretation needed!\n");
- break;
- }
- case ltfSingleTable: {
- LEReferenceTo<SingleTableLookupTable> lookupTable6(classTable, success);
- while ((dir == 1 && currGlyph <= glyphCount) || (dir == -1 && currGlyph >= -1)) {
- if (LE_FAILURE(success)) break;
- if (LE_STATE_PATIENCE_DECR()) {
- LE_DEBUG_BAD_FONT("patience exceeded - state table not moving")
- break; // patience exceeded.
- }
- LookupValue classCode = classCodeOOB;
- if (currGlyph == glyphCount || currGlyph == -1) {
- // XXX: How do we handle EOT vs. EOL?
- classCode = classCodeEOT;
- } else if(currGlyph > glyphCount) {
- // note if > glyphCount, we've run off the end (bad font)
- currGlyph = glyphCount;
- classCode = classCodeEOT;
- } else {
- LEGlyphID gid = glyphStorage[currGlyph];
- TTGlyphID glyphCode = (TTGlyphID) LE_GET_GLYPH(gid);
-
- if (glyphCode == 0xFFFF) {
- classCode = classCodeDEL;
- } else {
- const LookupSingle *segment = lookupTable6->lookupSingle(lookupTable6, lookupTable6->entries, gid, success);
- if (segment != NULL) {
- classCode = SWAPW(segment->value);
- }
- }
- }
- EntryTableIndex2 entryTableIndex = SWAPW(stateArray(classCode + currentState * nClasses, success));
- LE_STATE_PATIENCE_CURR(le_int32, currGlyph);
- currentState = processStateEntry(glyphStorage, currGlyph, entryTableIndex, success);
- LE_STATE_PATIENCE_INCR(currGlyph);
- }
- break;
- }
- case ltfTrimmedArray: {
- LEReferenceTo<TrimmedArrayLookupTable> lookupTable8(classTable, success);
- if (LE_FAILURE(success)) break;
- TTGlyphID firstGlyph = SWAPW(lookupTable8->firstGlyph);
- TTGlyphID lastGlyph = firstGlyph + SWAPW(lookupTable8->glyphCount);
-
- while ((dir == 1 && currGlyph <= glyphCount) || (dir == -1 && currGlyph >= -1)) {
- if(LE_STATE_PATIENCE_DECR()) {
- LE_DEBUG_BAD_FONT("patience exceeded - state table not moving")
- break; // patience exceeded.
- }
-
- LookupValue classCode = classCodeOOB;
- if (currGlyph == glyphCount || currGlyph == -1) {
- // 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 = SWAPW(lookupTable8->valueArray[glyphCode - firstGlyph]);
- }
- }
- EntryTableIndex2 entryTableIndex = SWAPW(stateArray(classCode + currentState * nClasses, success));
- LE_STATE_PATIENCE_CURR(le_int32, currGlyph);
- currentState = processStateEntry(glyphStorage, currGlyph, entryTableIndex, success);
- LE_STATE_PATIENCE_INCR(currGlyph);
- }
- break;
- }
- default:
- break;
- }
-
- endStateTable();
-}
-
-U_NAMESPACE_END
projects / apple / icu.git / blobdiff