/*

 *

 * (C) Copyright IBM Corp. 1998-2004 - All Rights Reserved

 *

 */

#include "LETypes.h"

#include "MorphTables.h"

#include "SubtableProcessor.h"

#include "NonContextualGlyphSubst.h"

#include "NonContextualGlyphSubstProc.h"

#include "SegmentArrayProcessor.h"

#include "LEGlyphStorage.h"

#include "LESwaps.h"

U_NAMESPACE_BEGIN

UOBJECT_DEFINE_RTTI_IMPLEMENTATION(SegmentArrayProcessor)

SegmentArrayProcessor::SegmentArrayProcessor()

{

}

SegmentArrayProcessor::SegmentArrayProcessor(const MorphSubtableHeader *morphSubtableHeader)

  : NonContextualGlyphSubstitutionProcessor(morphSubtableHeader)

{

    const NonContextualGlyphSubstitutionHeader *header = (const NonContextualGlyphSubstitutionHeader *) morphSubtableHeader;

    segmentArrayLookupTable = (const SegmentArrayLookupTable *) &header->table;

}

SegmentArrayProcessor::~SegmentArrayProcessor()

{

}

void SegmentArrayProcessor::process(LEGlyphStorage &glyphStorage)

{

    const LookupSegment *segments = segmentArrayLookupTable->segments;

    le_int32 glyphCount = glyphStorage.getGlyphCount();

    le_int32 glyph;

    for (glyph = 0; glyph < glyphCount; glyph += 1) {

        LEGlyphID thisGlyph = glyphStorage[glyph];

        const LookupSegment *lookupSegment = segmentArrayLookupTable->lookupSegment(segments, thisGlyph);

        if (lookupSegment != NULL)  {

            TTGlyphID firstGlyph = SWAPW(lookupSegment->firstGlyph);

            le_int16  offset = SWAPW(lookupSegment->value);

            if (offset != 0) {

                TTGlyphID  *glyphArray = (TTGlyphID *) ((char *) subtableHeader + offset);

                TTGlyphID   newGlyph   = SWAPW(glyphArray[LE_GET_GLYPH(thisGlyph) - firstGlyph]);

                glyphStorage[glyph] = LE_SET_GLYPH(thisGlyph, newGlyph);

            } 

        }

    }

}

U_NAMESPACE_END