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-rw-r--r--Build/source/libs/icu/icu-xetex/test/letest/cmaps.cpp200
1 files changed, 200 insertions, 0 deletions
diff --git a/Build/source/libs/icu/icu-xetex/test/letest/cmaps.cpp b/Build/source/libs/icu/icu-xetex/test/letest/cmaps.cpp
new file mode 100644
index 00000000000..3b8501b4cec
--- /dev/null
+++ b/Build/source/libs/icu/icu-xetex/test/letest/cmaps.cpp
@@ -0,0 +1,200 @@
+/***************************************************************************
+*
+* Copyright (C) 1998-2003, International Business Machines
+* Corporation and others. All Rights Reserved.
+*
+************************************************************************/
+
+#include "LETypes.h"
+#include "LESwaps.h"
+
+#include "sfnt.h"
+#include "cmaps.h"
+
+#define SWAPU16(code) ((LEUnicode16) SWAPW(code))
+#define SWAPU32(code) ((LEUnicode32) SWAPL(code))
+
+//
+// Finds the high bit by binary searching
+// through the bits in value.
+//
+le_int8 highBit(le_uint32 value)
+{
+ le_uint8 bit = 0;
+
+ if (value >= 1 << 16) {
+ value >>= 16;
+ bit += 16;
+ }
+
+ if (value >= 1 << 8) {
+ value >>= 8;
+ bit += 8;
+ }
+
+ if (value >= 1 << 4) {
+ value >>= 4;
+ bit += 4;
+ }
+
+ if (value >= 1 << 2) {
+ value >>= 2;
+ bit += 2;
+ }
+
+ if (value >= 1 << 1) {
+ value >>= 1;
+ bit += 1;
+ }
+
+ return bit;
+}
+
+CMAPMapper *CMAPMapper::createUnicodeMapper(const CMAPTable *cmap)
+{
+ le_uint16 i;
+ le_uint16 nSubtables = SWAPW(cmap->numberSubtables);
+ const CMAPEncodingSubtable *subtable = NULL;
+ le_uint32 offset1 = 0, offset10 = 0;
+
+ for (i = 0; i < nSubtables; i += 1) {
+ const CMAPEncodingSubtableHeader *esh = &cmap->encodingSubtableHeaders[i];
+
+ if (SWAPW(esh->platformID) == 3) {
+ switch (SWAPW(esh->platformSpecificID)) {
+ case 1:
+ offset1 = SWAPL(esh->encodingOffset);
+ break;
+
+ case 10:
+ offset10 = SWAPL(esh->encodingOffset);
+ break;
+ }
+ }
+ }
+
+
+ if (offset10 != 0)
+ {
+ subtable = (const CMAPEncodingSubtable *) ((const char *) cmap + offset10);
+ } else if (offset1 != 0) {
+ subtable = (const CMAPEncodingSubtable *) ((const char *) cmap + offset1);
+ } else {
+ return NULL;
+ }
+
+ switch (SWAPW(subtable->format)) {
+ case 4:
+ return new CMAPFormat4Mapper(cmap, (const CMAPFormat4Encoding *) subtable);
+
+ case 12:
+ {
+ const CMAPFormat12Encoding *encoding = (const CMAPFormat12Encoding *) subtable;
+
+ return new CMAPGroupMapper(cmap, encoding->groups, SWAPL(encoding->nGroups));
+ }
+
+ default:
+ break;
+ }
+
+ return NULL;
+}
+
+CMAPFormat4Mapper::CMAPFormat4Mapper(const CMAPTable *cmap, const CMAPFormat4Encoding *header)
+ : CMAPMapper(cmap)
+{
+ le_uint16 segCount = SWAPW(header->segCountX2) / 2;
+
+ fEntrySelector = SWAPW(header->entrySelector);
+ fRangeShift = SWAPW(header->rangeShift) / 2;
+ fEndCodes = &header->endCodes[0];
+ fStartCodes = &header->endCodes[segCount + 1]; // + 1 for reservedPad...
+ fIdDelta = &fStartCodes[segCount];
+ fIdRangeOffset = &fIdDelta[segCount];
+}
+
+LEGlyphID CMAPFormat4Mapper::unicodeToGlyph(LEUnicode32 unicode32) const
+{
+ if (unicode32 >= 0x10000) {
+ return 0;
+ }
+
+ LEUnicode16 unicode = (LEUnicode16) unicode32;
+ le_uint16 index = 0;
+ le_uint16 probe = 1 << fEntrySelector;
+ TTGlyphID result = 0;
+
+ if (SWAPU16(fStartCodes[fRangeShift]) <= unicode) {
+ index = fRangeShift;
+ }
+
+ while (probe > (1 << 0)) {
+ probe >>= 1;
+
+ if (SWAPU16(fStartCodes[index + probe]) <= unicode) {
+ index += probe;
+ }
+ }
+
+ if (unicode >= SWAPU16(fStartCodes[index]) && unicode <= SWAPU16(fEndCodes[index])) {
+ if (fIdRangeOffset[index] == 0) {
+ result = (TTGlyphID) unicode;
+ } else {
+ le_uint16 offset = unicode - SWAPU16(fStartCodes[index]);
+ le_uint16 rangeOffset = SWAPW(fIdRangeOffset[index]);
+ le_uint16 *glyphIndexTable = (le_uint16 *) ((char *) &fIdRangeOffset[index] + rangeOffset);
+
+ result = SWAPW(glyphIndexTable[offset]);
+ }
+
+ result += SWAPW(fIdDelta[index]);
+ } else {
+ result = 0;
+ }
+
+ return LE_SET_GLYPH(0, result);
+}
+
+CMAPFormat4Mapper::~CMAPFormat4Mapper()
+{
+ // parent destructor does it all
+}
+
+CMAPGroupMapper::CMAPGroupMapper(const CMAPTable *cmap, const CMAPGroup *groups, le_uint32 nGroups)
+ : CMAPMapper(cmap), fGroups(groups)
+{
+ le_uint8 bit = highBit(nGroups);
+ fPower = 1 << bit;
+ fRangeOffset = nGroups - fPower;
+}
+
+LEGlyphID CMAPGroupMapper::unicodeToGlyph(LEUnicode32 unicode32) const
+{
+ le_int32 probe = fPower;
+ le_int32 range = 0;
+
+ if (SWAPU32(fGroups[fRangeOffset].startCharCode) <= unicode32) {
+ range = fRangeOffset;
+ }
+
+ while (probe > (1 << 0)) {
+ probe >>= 1;
+
+ if (SWAPU32(fGroups[range + probe].startCharCode) <= unicode32) {
+ range += probe;
+ }
+ }
+
+ if (SWAPU32(fGroups[range].startCharCode) <= unicode32 && SWAPU32(fGroups[range].endCharCode) >= unicode32) {
+ return (LEGlyphID) (SWAPU32(fGroups[range].startGlyphCode) + unicode32 - SWAPU32(fGroups[range].startCharCode));
+ }
+
+ return 0;
+}
+
+CMAPGroupMapper::~CMAPGroupMapper()
+{
+ // parent destructor does it all
+}
+