--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/fontservices/textshaperplugin/IcuSource/layout/IndicLayoutEngine.cpp	Tue Feb 02 02:02:46 2010 +0200
@@ -0,0 +1,118 @@
+
+/*
+ *
+ * (C) Copyright IBM Corp. 1998-2005 - All Rights Reserved
+ *
+ */
+
+#include "LETypes.h"
+#include "LayoutEngine.h"
+#include "OpenTypeLayoutEngine.h"
+#include "IndicLayoutEngine.h"
+#include "ScriptAndLanguageTags.h"
+
+#include "GlyphSubstitutionTables.h"
+#include "GlyphDefinitionTables.h"
+#include "GlyphPositioningTables.h"
+
+#include "GDEFMarkFilter.h"
+#include "LEGlyphStorage.h"
+
+#include "IndicReordering.h"
+
+U_NAMESPACE_BEGIN
+
+UOBJECT_DEFINE_RTTI_IMPLEMENTATION(IndicOpenTypeLayoutEngine)
+
+IndicOpenTypeLayoutEngine::IndicOpenTypeLayoutEngine(const LEFontInstance *fontInstance, le_int32 scriptCode, le_int32 languageCode,
+                    le_int32 typoFlags, const GlyphSubstitutionTableHeader *gsubTable)
+    : OpenTypeLayoutEngine(fontInstance, scriptCode, languageCode, typoFlags, gsubTable), fMPreFixups(NULL)
+{
+    fFeatureOrder = IndicReordering::getFeatureOrder();
+}
+
+IndicOpenTypeLayoutEngine::IndicOpenTypeLayoutEngine(const LEFontInstance *fontInstance, le_int32 scriptCode, le_int32 languageCode, le_int32 typoFlags)
+    : OpenTypeLayoutEngine(fontInstance, scriptCode, languageCode, typoFlags), fMPreFixups(NULL)
+{
+    fFeatureOrder = IndicReordering::getFeatureOrder();
+}
+
+IndicOpenTypeLayoutEngine::~IndicOpenTypeLayoutEngine()
+{
+    // nothing to do
+}
+
+// Input: characters, tags
+// Output: glyphs, char indices
+le_int32 IndicOpenTypeLayoutEngine::glyphProcessing(const LEUnicode chars[], le_int32 offset, le_int32 count, le_int32 max, le_bool rightToLeft,
+                    LEGlyphStorage &glyphStorage, LEErrorCode &success)
+{
+    if (LE_FAILURE(success)) {
+        return 0;
+    }
+
+    if (chars == NULL || offset < 0 || count < 0 || max < 0 || offset >= max || offset + count > max) {
+        success = LE_ILLEGAL_ARGUMENT_ERROR;
+        return 0;
+    }
+
+    le_int32 retCount = OpenTypeLayoutEngine::glyphProcessing(chars, offset, count, max, rightToLeft, glyphStorage, success);
+
+    if (LE_FAILURE(success)) {
+        return 0;
+    }
+
+    IndicReordering::adjustMPres(fMPreFixups, glyphStorage, success);
+
+    return retCount;
+}
+
+// Input: characters
+// Output: characters, char indices, tags
+// Returns: output character count
+le_int32 IndicOpenTypeLayoutEngine::characterProcessing(const LEUnicode chars[], le_int32 offset, le_int32 count, le_int32 max, le_bool rightToLeft,
+        LEUnicode *&outChars, LEGlyphStorage &glyphStorage, LEErrorCode &success)
+{
+    if (LE_FAILURE(success)) {
+        return 0;
+    }
+
+    if (chars == NULL || offset < 0 || count < 0 || max < 0 || offset >= max || offset + count > max) {
+        success = LE_ILLEGAL_ARGUMENT_ERROR;
+        return 0;
+    }
+
+    le_int32 worstCase = count * IndicReordering::getWorstCaseExpansion(fScriptCode);
+
+    outChars = LE_NEW_ARRAY(LEUnicode, worstCase);
+
+    if (outChars == NULL) {
+        success = LE_MEMORY_ALLOCATION_ERROR;
+        return 0;
+    }
+
+    glyphStorage.allocateGlyphArray(worstCase, rightToLeft, success);
+    glyphStorage.allocateAuxData(success);
+
+    if (LE_FAILURE(success)) {
+        LE_DELETE_ARRAY(outChars);
+        outChars = NULL;
+        return 0;
+    }
+
+    // NOTE: assumes this allocates featureTags...
+    // (probably better than doing the worst case stuff here...)
+    le_int32 outCharCount = IndicReordering::reorder(&chars[offset], count,
+        fScriptCode, outChars, glyphStorage, &fMPreFixups, success);
+
+    if (LE_FAILURE(success)) {
+        LE_DELETE_ARRAY(outChars);
+        outChars = NULL;
+        return 0;
+    }
+
+    glyphStorage.adoptGlyphCount(outCharCount);
+    return outCharCount;
+}
+
+U_NAMESPACE_END