/*
*
- * (C) Copyright IBM Corp. and others 1998-2013 - All Rights Reserved
+ * (C) Copyright IBM Corp. and others 1998-2014 - All Rights Reserved
*
*/
#include "LEGlyphStorage.h"
#include "LESwaps.h"
#include "LookupTables.h"
-#include <stdio.h>
U_NAMESPACE_BEGIN
{
}
-StateTableProcessor2::StateTableProcessor2(const MorphSubtableHeader2 *morphSubtableHeader)
- : SubtableProcessor2(morphSubtableHeader)
+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)
{
- stateTableHeader = (const MorphStateTableHeader2 *) morphSubtableHeader;
- nClasses = SWAPL(stateTableHeader->stHeader.nClasses);
- classTableOffset = SWAPL(stateTableHeader->stHeader.classTableOffset);
- stateArrayOffset = SWAPL(stateTableHeader->stHeader.stateArrayOffset);
- entryTableOffset = SWAPL(stateTableHeader->stHeader.entryTableOffset);
-
- classTable = (LookupTable *) ((char *) &stateTableHeader->stHeader + classTableOffset);
- format = SWAPW(classTable->format);
-
- stateArray = (const EntryTableIndex2 *) ((char *) &stateTableHeader->stHeader + stateArrayOffset);
+ if (LE_FAILURE(success)) {
+ return;
+ }
+ nClasses = SWAPL(stHeader->nClasses);
+ classTableOffset = SWAPL(stHeader->classTableOffset);
+ stateArrayOffset = SWAPL(stHeader->stateArrayOffset);
+ entryTableOffset = SWAPL(stHeader->entryTableOffset);
+
+ classTable = LEReferenceTo<LookupTable>(stHeader, success, classTableOffset);
+ format = SWAPW(classTable->format);
+
+ stateArray = LEReferenceToArrayOf<EntryTableIndex2>(stHeader, success, stateArrayOffset, LE_UNBOUNDED_ARRAY);
}
StateTableProcessor2::~StateTableProcessor2()
{
}
-void StateTableProcessor2::process(LEGlyphStorage &glyphStorage)
+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;
switch (format) {
case ltfSimpleArray: {
#ifdef TEST_FORMAT
- SimpleArrayLookupTable *lookupTable0 = (SimpleArrayLookupTable *) classTable;
+ 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 = SWAPW(lookupTable0->valueArray[gid]);
}
}
- EntryTableIndex2 entryTableIndex = SWAPW(stateArray[classCode + currentState * nClasses]);
+ 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: {
- SegmentSingleLookupTable *lookupTable2 = (SegmentSingleLookupTable *) classTable;
+ 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?
if (glyphCode == 0xFFFF) {
classCode = classCodeDEL;
} else {
- const LookupSegment *segment = lookupTable2->lookupSegment(lookupTable2->segments, gid);
- if (segment != NULL) {
+ 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]);
- currentState = processStateEntry(glyphStorage, currGlyph, entryTableIndex);
+ 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");
+ //printf("Lookup Table Format4: specific interpretation needed!\n");
break;
}
case ltfSingleTable: {
- SingleTableLookupTable *lookupTable6 = (SingleTableLookupTable *) classTable;
+ 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->entries, gid);
+ const LookupSingle *segment = lookupTable6->lookupSingle(lookupTable6, lookupTable6->entries, gid, success);
if (segment != NULL) {
classCode = SWAPW(segment->value);
}
}
}
- EntryTableIndex2 entryTableIndex = SWAPW(stateArray[classCode + currentState * nClasses]);
- currentState = processStateEntry(glyphStorage, currGlyph, entryTableIndex);
+ 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: {
- TrimmedArrayLookupTable *lookupTable8 = (TrimmedArrayLookupTable *) classTable;
+ 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 = SWAPW(lookupTable8->valueArray[glyphCode - firstGlyph]);
}
}
- EntryTableIndex2 entryTableIndex = SWAPW(stateArray[classCode + currentState * nClasses]);
- currentState = processStateEntry(glyphStorage, currGlyph, entryTableIndex);
+ 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;
}
projects / apple / icu.git / blobdiff