sl@0: /*
sl@0:  * @(#)Features.cpp 1.4 00/03/15
sl@0:  *
sl@0:  * (C) Copyright IBM Corp. 1998-2003 - All Rights Reserved
sl@0:  *
sl@0:  */
sl@0: 
sl@0: #include "LETypes.h"
sl@0: #include "OpenTypeUtilities.h"
sl@0: #include "OpenTypeTables.h"
sl@0: #include "Features.h"
sl@0: #include "LESwaps.h"
sl@0: 
sl@0: U_NAMESPACE_BEGIN
sl@0: 
sl@0: const FeatureTable *FeatureListTable::getFeatureTable(le_uint16 featureIndex, LETag *featureTag) const
sl@0: {
sl@0:     if (featureIndex >= SWAPW(featureCount)) {
sl@0:         return 0;
sl@0:     }
sl@0: 
sl@0:     Offset featureTableOffset = featureRecordArray[featureIndex].featureTableOffset;
sl@0: 
sl@0:     *featureTag = SWAPT(featureRecordArray[featureIndex].featureTag);
sl@0: 
sl@0:     return (const FeatureTable *) ((char *) this + SWAPW(featureTableOffset));
sl@0: }
sl@0: 
sl@0: /*
sl@0:  * Note: according to the OpenType Spec. v 1.4, the entries in the Feature
sl@0:  * List Table are sorted alphabetically by feature tag; however, there seem
sl@0:  * to be some fonts which have an unsorted list; that's why the binary search
sl@0:  * is #if 0'd out and replaced by a linear search.
sl@0:  *
sl@0:  * Also note: as of ICU 2.6, this method isn't called anyhow...
sl@0:  */
sl@0: const FeatureTable *FeatureListTable::getFeatureTable(LETag featureTag) const
sl@0: {
sl@0: #if 0
sl@0:     Offset featureTableOffset =
sl@0:         OpenTypeUtilities::getTagOffset(featureTag, (TagAndOffsetRecord *) featureRecordArray, SWAPW(featureCount));
sl@0: 
sl@0:     if (featureTableOffset == 0) {
sl@0:         return 0;
sl@0:     }
sl@0: 
sl@0:     return (const FeatureTable *) ((char *) this + SWAPW(featureTableOffset));
sl@0: #else
sl@0:     int count = SWAPW(featureCount);
sl@0:     
sl@0:     for (int i = 0; i < count; i += 1) {
sl@0:         if (SWAPT(featureRecordArray[i].featureTag) == featureTag) {
sl@0:             return (const FeatureTable *) ((char *) this + SWAPW(featureRecordArray[i].featureTableOffset));
sl@0:         }
sl@0:     }
sl@0: 
sl@0:     return 0;
sl@0: #endif
sl@0: }
sl@0: 
sl@0: U_NAMESPACE_END