projects / apple / icu.git / blame
| Commit | Line | Data |
|---|---|---|
| b75a7d8f A |
1 | /* |
| 2 | * %W% %E% | |
| 3 | * | |
| 729e4ab9 | 4 | * (C) Copyright IBM Corp. 2008-2010 - All Rights Reserved |
| b75a7d8f A |
5 | * |
| 6 | */ | |
| 7 | ||
| 8 | #include "LETypes.h" | |
| 9 | #include "OpenTypeTables.h" | |
| 10 | #include "GlyphSubstitutionTables.h" | |
| 11 | #include "LookupProcessor.h" | |
| 12 | #include "ExtensionSubtables.h" | |
| 13 | #include "GlyphIterator.h" | |
| 14 | #include "LESwaps.h" | |
| 15 | ||
| 16 | U_NAMESPACE_BEGIN | |
| 17 | ||
| 729e4ab9 A |
18 | // read a 32-bit value that might only be 16-bit-aligned in memory |
| 19 | #define READ_LONG(code) (le_uint32)((SWAPW(*(le_uint16*)&code) << 16) + SWAPW(*(((le_uint16*)&code) + 1))) | |
| b75a7d8f A |
20 | |
| 21 | // FIXME: should look at the format too... maybe have a sub-class for it? | |
| 22 | le_uint32 ExtensionSubtable::process(const LookupProcessor *lookupProcessor, le_uint16 lookupType, | |
| 729e4ab9 | 23 | GlyphIterator *glyphIterator, const LEFontInstance *fontInstance, LEErrorCode& success) const |
| b75a7d8f | 24 | { |
| 729e4ab9 A |
25 | if (LE_FAILURE(success)) { |
| 26 | return 0; | |
| 27 | } | |
| 28 | ||
| b75a7d8f A |
29 | le_uint16 elt = SWAPW(extensionLookupType); |
| 30 | ||
| 31 | if (elt != lookupType) { | |
| 729e4ab9 | 32 | le_uint32 extOffset = READ_LONG(extensionOffset); |
| b75a7d8f A |
33 | LookupSubtable *subtable = (LookupSubtable *) ((char *) this + extOffset); |
| 34 | ||
| 729e4ab9 | 35 | return lookupProcessor->applySubtable(subtable, elt, glyphIterator, fontInstance, success); |
| b75a7d8f A |
36 | } |
| 37 | ||
| 38 | return 0; | |
| 39 | } | |
| 40 | ||
| 41 | U_NAMESPACE_END |