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-rw-r--r--Build/source/libs/icu/icu-4.6/layout/CoverageTables.cpp91
1 files changed, 91 insertions, 0 deletions
diff --git a/Build/source/libs/icu/icu-4.6/layout/CoverageTables.cpp b/Build/source/libs/icu/icu-4.6/layout/CoverageTables.cpp
new file mode 100644
index 00000000000..e5f1597f864
--- /dev/null
+++ b/Build/source/libs/icu/icu-4.6/layout/CoverageTables.cpp
@@ -0,0 +1,91 @@
+/*
+ *
+ * (C) Copyright IBM Corp. 1998-2006 - All Rights Reserved
+ *
+ */
+
+#include "LETypes.h"
+#include "OpenTypeTables.h"
+#include "OpenTypeUtilities.h"
+#include "CoverageTables.h"
+#include "LESwaps.h"
+
+U_NAMESPACE_BEGIN
+
+le_int32 CoverageTable::getGlyphCoverage(LEGlyphID glyphID) const
+{
+ switch(SWAPW(coverageFormat))
+ {
+ case 0:
+ return -1;
+
+ case 1:
+ {
+ const CoverageFormat1Table *f1Table = (const CoverageFormat1Table *) this;
+
+ return f1Table->getGlyphCoverage(glyphID);
+ }
+
+ case 2:
+ {
+ const CoverageFormat2Table *f2Table = (const CoverageFormat2Table *) this;
+
+ return f2Table->getGlyphCoverage(glyphID);
+ }
+
+ default:
+ return -1;
+ }
+}
+
+le_int32 CoverageFormat1Table::getGlyphCoverage(LEGlyphID glyphID) const
+{
+ TTGlyphID ttGlyphID = (TTGlyphID) LE_GET_GLYPH(glyphID);
+ le_uint16 count = SWAPW(glyphCount);
+ le_uint8 bit = OpenTypeUtilities::highBit(count);
+ le_uint16 power = 1 << bit;
+ le_uint16 extra = count - power;
+ le_uint16 probe = power;
+ le_uint16 index = 0;
+
+ if (count == 0) {
+ return -1;
+ }
+
+ if (SWAPW(glyphArray[extra]) <= ttGlyphID) {
+ index = extra;
+ }
+
+ while (probe > (1 << 0)) {
+ probe >>= 1;
+
+ if (SWAPW(glyphArray[index + probe]) <= ttGlyphID) {
+ index += probe;
+ }
+ }
+
+ if (SWAPW(glyphArray[index]) == ttGlyphID) {
+ return index;
+ }
+
+ return -1;
+}
+
+le_int32 CoverageFormat2Table::getGlyphCoverage(LEGlyphID glyphID) const
+{
+ TTGlyphID ttGlyphID = (TTGlyphID) LE_GET_GLYPH(glyphID);
+ le_uint16 count = SWAPW(rangeCount);
+ le_int32 rangeIndex =
+ OpenTypeUtilities::getGlyphRangeIndex(ttGlyphID, rangeRecordArray, count);
+
+ if (rangeIndex < 0) {
+ return -1;
+ }
+
+ TTGlyphID firstInRange = SWAPW(rangeRecordArray[rangeIndex].firstGlyph);
+ le_uint16 startCoverageIndex = SWAPW(rangeRecordArray[rangeIndex].rangeValue);
+
+ return startCoverageIndex + (ttGlyphID - firstInRange);
+}
+
+U_NAMESPACE_END