ICU-59180.0.1.tar.gz

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

diff --git a/icuSources/layout/ContextualGlyphSubstProc.cpp b/icuSources/layout/ContextualGlyphSubstProc.cpp
index 009866dae9941066c173a26b0678a39dc8a33c2f..4884710d814d656b2f89f149126ad20d0eb1d592 100644 (file)
--- a/icuSources/layout/ContextualGlyphSubstProc.cpp
+++ b/icuSources/layout/ContextualGlyphSubstProc.cpp
@@ -1,7 +1,6 @@
 /*
- * @(#)ContextualGlyphSubstProc.cpp    1.6 00/03/15
  *
- * (C) Copyright IBM Corp. 1998-2003 - All Rights Reserved
+ * (C) Copyright IBM Corp. 1998-2013 - All Rights Reserved
  *
  */
 
@@ -12,19 +11,25 @@
 #include "SubtableProcessor.h"
 #include "StateTableProcessor.h"
 #include "ContextualGlyphSubstProc.h"
+#include "LEGlyphStorage.h"
 #include "LESwaps.h"
 
 U_NAMESPACE_BEGIN
 
-const char ContextualGlyphSubstitutionProcessor::fgClassID=0;
+UOBJECT_DEFINE_RTTI_IMPLEMENTATION(ContextualGlyphSubstitutionProcessor)
 
-ContextualGlyphSubstitutionProcessor::ContextualGlyphSubstitutionProcessor(const MorphSubtableHeader *morphSubtableHeader)
-  : StateTableProcessor(morphSubtableHeader)
+ContextualGlyphSubstitutionProcessor::ContextualGlyphSubstitutionProcessor(const LEReferenceTo<MorphSubtableHeader> &morphSubtableHeader, LEErrorCode &success)
+  : StateTableProcessor(morphSubtableHeader, success), entryTable(), contextualGlyphSubstitutionHeader(morphSubtableHeader, success)
 {
-    contextualGlyphSubstitutionHeader = (const ContextualGlyphSubstitutionHeader *) morphSubtableHeader;
-    substitutionTableOffset = SWAPW(contextualGlyphSubstitutionHeader->substitutionTableOffset);
-
-    entryTable = (const ContextualGlyphSubstitutionStateEntry *) ((char *) &stateTableHeader->stHeader + entryTableOffset);
+  contextualGlyphSubstitutionHeader.orphan();
+  substitutionTableOffset = SWAPW(contextualGlyphSubstitutionHeader->substitutionTableOffset);
+
+  
+  entryTable = LEReferenceToArrayOf<ContextualGlyphSubstitutionStateEntry>(stateTableHeader, success, 
+                                                                           (const ContextualGlyphSubstitutionStateEntry*)(&stateTableHeader->stHeader),
+                                                                           entryTableOffset, LE_UNBOUNDED_ARRAY);
+  int16Table = LEReferenceToArrayOf<le_int16>(stateTableHeader, success, (const le_int16*)(&stateTableHeader->stHeader),
+                                              0, LE_UNBOUNDED_ARRAY); // rest of the table as le_int16s
 }
 
 ContextualGlyphSubstitutionProcessor::~ContextualGlyphSubstitutionProcessor()
@@ -36,27 +41,28 @@ void ContextualGlyphSubstitutionProcessor::beginStateTable()
     markGlyph = 0;
 }
 
-ByteOffset ContextualGlyphSubstitutionProcessor::processStateEntry(LEGlyphID *glyphs, le_int32 * /*charIndices*/, le_int32 &currGlyph, le_int32 /*glyphCount*/, EntryTableIndex index)
+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);
-        TTGlyphID newGlyph = SWAPW(table[LE_GET_GLYPH(glyphs[markGlyph])]);
-
-         glyphs[markGlyph] = LE_SET_GLYPH(glyphs[markGlyph], newGlyph);
-    }
-
-    if (currOffset != 0) {
-        const le_int16 *table = (const le_int16 *) ((char *) &stateTableHeader->stHeader + currOffset * 2);
-        le_int16 newGlyph = SWAPW(table[LE_GET_GLYPH(glyphs[currGlyph])]);
-
-        glyphs[currGlyph] = LE_SET_GLYPH(glyphs[currGlyph], newGlyph);
-    }
+  LEErrorCode success = LE_NO_ERROR;
+  const ContextualGlyphSubstitutionStateEntry *entry = entryTable.getAlias(index, success);
+  ByteOffset newState = SWAPW(entry->newStateOffset);
+  le_int16 flags = SWAPW(entry->flags);
+  WordOffset markOffset = SWAPW(entry->markOffset);
+  WordOffset currOffset = SWAPW(entry->currOffset);
+  
+  if (markOffset != 0 && LE_SUCCESS(success)) {
+    LEGlyphID mGlyph = glyphStorage[markGlyph];
+    TTGlyphID newGlyph = SWAPW(int16Table.getObject(markOffset + LE_GET_GLYPH(mGlyph), success)); // whew. 
+
+    glyphStorage[markGlyph] = LE_SET_GLYPH(mGlyph, newGlyph);  
+  }
+
+  if (currOffset != 0) {
+    LEGlyphID thisGlyph = glyphStorage[currGlyph];
+    TTGlyphID newGlyph = SWAPW(int16Table.getObject(currOffset + LE_GET_GLYPH(thisGlyph), success)); // whew. 
+    
+    glyphStorage[currGlyph] = LE_SET_GLYPH(thisGlyph, newGlyph);
+  }
 
     if (flags & cgsSetMark) {
         markGlyph = currGlyph;