ICU-57132.0.1.tar.gz

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

diff --git a/icuSources/layout/MarkToMarkPosnSubtables.cpp b/icuSources/layout/MarkToMarkPosnSubtables.cpp
index 66d1b9dd1c21a1e3088314a7833f45fc23f10bd8..d31e1639641fe9389a99409f02100f39ac5f8580 100644 (file)
--- a/icuSources/layout/MarkToMarkPosnSubtables.cpp
+++ b/icuSources/layout/MarkToMarkPosnSubtables.cpp
@@ -1,6 +1,6 @@
 /*
  *
- * (C) Copyright IBM Corp. 1998-2004 - All Rights Reserved
+ * (C) Copyright IBM Corp. 1998-2013 - All Rights Reserved
  *
  */
 
@@ -26,10 +26,10 @@ LEGlyphID MarkToMarkPositioningSubtable::findMark2Glyph(GlyphIterator *glyphIter
     return 0xFFFF;
 }
 
-le_int32 MarkToMarkPositioningSubtable::process(GlyphIterator *glyphIterator, const LEFontInstance *fontInstance) const
+le_int32 MarkToMarkPositioningSubtable::process(const LETableReference &base, GlyphIterator *glyphIterator, const LEFontInstance *fontInstance, LEErrorCode &success) const
 {
     LEGlyphID markGlyph = glyphIterator->getCurrGlyphID();
-    le_int32 markCoverage = getGlyphCoverage((LEGlyphID) markGlyph);
+    le_int32 markCoverage = getGlyphCoverage(base, (LEGlyphID) markGlyph, success);
 
     if (markCoverage < 0) {
         // markGlyph isn't a covered mark glyph
@@ -49,7 +49,7 @@ le_int32 MarkToMarkPositioningSubtable::process(GlyphIterator *glyphIterator, co
 
     GlyphIterator mark2Iterator(*glyphIterator);
     LEGlyphID mark2Glyph = findMark2Glyph(&mark2Iterator);
-    le_int32 mark2Coverage = getBaseCoverage((LEGlyphID) mark2Glyph);
+    le_int32 mark2Coverage = getBaseCoverage(base, (LEGlyphID) mark2Glyph, success);
     const Mark2Array *mark2Array = (const Mark2Array *) ((char *) this + SWAPW(baseArrayOffset));
     le_uint16 mark2Count = SWAPW(mark2Array->mark2RecordCount);
 
@@ -65,6 +65,11 @@ le_int32 MarkToMarkPositioningSubtable::process(GlyphIterator *glyphIterator, co
     const AnchorTable *anchorTable = (const AnchorTable *) ((char *) mark2Array + anchorTableOffset);
     LEPoint mark2Anchor, markAdvance, pixels;
 
+    if (anchorTableOffset == 0) {
+        // this seems to mean that the marks don't attach...
+        return 0;
+    }
+
     anchorTable->getAnchor(mark2Glyph, fontInstance, mark2Anchor);
 
     fontInstance->getGlyphAdvance(markGlyph, pixels);