source/layout/Features.cpp

/*
 * @(#)Features.cpp	1.4 00/03/15
 *
 * (C) Copyright IBM Corp. 1998, 1999, 2000, 2001 - All Rights Reserved
 *
 */

#include "LETypes.h"
#include "OpenTypeUtilities.h"
#include "OpenTypeTables.h"
#include "Features.h"
#include "LESwaps.h"

U_NAMESPACE_BEGIN

const FeatureTable *FeatureListTable::getFeatureTable(le_uint16 featureIndex, LETag *featureTag) const
{
    if (featureIndex >= SWAPW(featureCount)) {
        return 0;
    }

    Offset featureTableOffset = featureRecordArray[featureIndex].featureTableOffset;

    *featureTag = SWAPT(featureRecordArray[featureIndex].featureTag);

    return (const FeatureTable *) ((char *) this + SWAPW(featureTableOffset));
}

const FeatureTable *FeatureListTable::getFeatureTable(LETag featureTag) const
{
#if 0
    Offset featureTableOffset =
        OpenTypeUtilities::getTagOffset(featureTag, (TagAndOffsetRecord *) featureRecordArray, SWAPW(featureCount));

    if (featureTableOffset == 0) {
        return 0;
    }

    return (const FeatureTable *) ((char *) this + SWAPW(featureTableOffset));
#else
    int count = SWAPW(featureCount);
    
    for (int i = 0; i < count; i += 1) {
	if (SWAPT(featureRecordArray[i].featureTag) == featureTag) {
	    return (const FeatureTable *) ((char *) this + SWAPW(featureRecordArray[i].featureTableOffset));
	}
    }

    return 0;
#endif
}

U_NAMESPACE_END