--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/fontservices/textshaperplugin/IcuSource/layout/ContextualGlyphSubstProc.cpp	Tue Feb 02 02:02:46 2010 +0200
@@ -0,0 +1,79 @@
+/*
+ *
+ * (C) Copyright IBM Corp. 1998-2004 - All Rights Reserved
+ *
+ */
+
+#include "LETypes.h"
+#include "MorphTables.h"
+#include "StateTables.h"
+#include "MorphStateTables.h"
+#include "SubtableProcessor.h"
+#include "StateTableProcessor.h"
+#include "ContextualGlyphSubstProc.h"
+#include "LEGlyphStorage.h"
+#include "LESwaps.h"
+
+U_NAMESPACE_BEGIN
+
+UOBJECT_DEFINE_RTTI_IMPLEMENTATION(ContextualGlyphSubstitutionProcessor)
+
+ContextualGlyphSubstitutionProcessor::ContextualGlyphSubstitutionProcessor(const MorphSubtableHeader *morphSubtableHeader)
+  : StateTableProcessor(morphSubtableHeader)
+{
+    contextualGlyphSubstitutionHeader = (const ContextualGlyphSubstitutionHeader *) morphSubtableHeader;
+    substitutionTableOffset = SWAPW(contextualGlyphSubstitutionHeader->substitutionTableOffset);
+
+    entryTable = (const ContextualGlyphSubstitutionStateEntry *) ((char *) &stateTableHeader->stHeader + entryTableOffset);
+}
+
+ContextualGlyphSubstitutionProcessor::~ContextualGlyphSubstitutionProcessor()
+{
+}
+
+void ContextualGlyphSubstitutionProcessor::beginStateTable()
+{
+    markGlyph = 0;
+}
+
+ByteOffset ContextualGlyphSubstitutionProcessor::processStateEntry(LEGlyphStorage &glyphStorage, le_int32 &currGlyph, EntryTableIndex index)
+{
+    const ContextualGlyphSubstitutionStateEntry *entry = &entryTable[index];
+    ByteOffset newState = SWAPW(entry->newStateOffset);
+    le_int16 flags = SWAPW(entry->flags);
+    WordOffset markOffset = SWAPW(entry->markOffset);
+    WordOffset currOffset = SWAPW(entry->currOffset);
+
+    if (markOffset != 0) {
+        const le_int16 *table = (const le_int16 *) ((char *) &stateTableHeader->stHeader + markOffset * 2);
+        LEGlyphID mGlyph = glyphStorage[markGlyph];
+        TTGlyphID newGlyph = SWAPW(table[LE_GET_GLYPH(mGlyph)]);
+
+         glyphStorage[markGlyph] = LE_SET_GLYPH(mGlyph, newGlyph);
+    }
+
+    if (currOffset != 0) {
+        const le_int16 *table = (const le_int16 *) ((char *) &stateTableHeader->stHeader + currOffset * 2);
+        LEGlyphID thisGlyph = glyphStorage[currGlyph];
+        TTGlyphID newGlyph = SWAPW(table[LE_GET_GLYPH(thisGlyph)]);
+
+        glyphStorage[currGlyph] = LE_SET_GLYPH(thisGlyph, newGlyph);
+    }
+
+    if (flags & cgsSetMark) {
+        markGlyph = currGlyph;
+    }
+
+    if (!(flags & cgsDontAdvance)) {
+        // should handle reverse too!
+        currGlyph += 1;
+    }
+
+    return newState;
+}
+
+void ContextualGlyphSubstitutionProcessor::endStateTable()
+{
+}
+
+U_NAMESPACE_END