/*

 * @(#)Features.cpp 1.4 00/03/15

 *

 * (C) Copyright IBM Corp. 1998-2003 - 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));

}

/*

 * Note: according to the OpenType Spec. v 1.4, the entries in the Feature

 * List Table are sorted alphabetically by feature tag; however, there seem

 * to be some fonts which have an unsorted list; that's why the binary search

 * is #if 0'd out and replaced by a linear search.

 *

 * Also note: as of ICU 2.6, this method isn't called anyhow...

 */

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