ICU-511.25.tar.gz

[apple/icu.git] / icuSources / layout / SegmentArrayProcessor2.cpp

diff --git a/icuSources/layout/SegmentArrayProcessor2.cpp b/icuSources/layout/SegmentArrayProcessor2.cpp
new file mode 100644 (file)
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+++ b/icuSources/layout/SegmentArrayProcessor2.cpp
@@ -0,0 +1,60 @@
+/*
+ *
+ * (C) Copyright IBM Corp.  and others 1998-2013 - All Rights Reserved
+ *
+ */
+
+#include "LETypes.h"
+#include "MorphTables.h"
+#include "SubtableProcessor2.h"
+#include "NonContextualGlyphSubst.h"
+#include "NonContextualGlyphSubstProc2.h"
+#include "SegmentArrayProcessor2.h"
+#include "LEGlyphStorage.h"
+#include "LESwaps.h"
+
+U_NAMESPACE_BEGIN
+
+UOBJECT_DEFINE_RTTI_IMPLEMENTATION(SegmentArrayProcessor2)
+
+SegmentArrayProcessor2::SegmentArrayProcessor2()
+{
+}
+
+SegmentArrayProcessor2::SegmentArrayProcessor2(const MorphSubtableHeader2 *morphSubtableHeader)
+  : NonContextualGlyphSubstitutionProcessor2(morphSubtableHeader)
+{
+    const NonContextualGlyphSubstitutionHeader2 *header = (const NonContextualGlyphSubstitutionHeader2 *) morphSubtableHeader;
+
+    segmentArrayLookupTable = (const SegmentArrayLookupTable *) &header->table;
+}
+
+SegmentArrayProcessor2::~SegmentArrayProcessor2()
+{
+}
+
+void SegmentArrayProcessor2::process(LEGlyphStorage &glyphStorage)
+{
+    const LookupSegment *segments = segmentArrayLookupTable->segments;
+    le_int32 glyphCount = glyphStorage.getGlyphCount();
+    le_int32 glyph;
+
+    for (glyph = 0; glyph < glyphCount; glyph += 1) {
+        LEGlyphID thisGlyph = glyphStorage[glyph];
+        const LookupSegment *lookupSegment = segmentArrayLookupTable->lookupSegment(segments, thisGlyph);
+
+        if (lookupSegment != NULL)  {
+            TTGlyphID firstGlyph = SWAPW(lookupSegment->firstGlyph);
+            le_int16  offset = SWAPW(lookupSegment->value);
+
+            if (offset != 0) {
+                TTGlyphID  *glyphArray = (TTGlyphID *) ((char *) subtableHeader + offset);
+                TTGlyphID   newGlyph   = SWAPW(glyphArray[LE_GET_GLYPH(thisGlyph) - firstGlyph]);
+                
+                glyphStorage[glyph] = LE_SET_GLYPH(thisGlyph, newGlyph);
+            } 
+        }
+    }
+}
+ 
+U_NAMESPACE_END