SegmentArrayProcessor2.cpp revision 12949:7b7c731a73d1 
1/*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation.  Oracle designates this
7 * particular file as subject to the "Classpath" exception as provided
8 * by Oracle in the LICENSE file that accompanied this code.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
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24 */
25
26/*
27 *
28 * (C) Copyright IBM Corp.  and others 1998-2013 - All Rights Reserved
29 *
30 */
31
32#include "LETypes.h"
33#include "MorphTables.h"
34#include "SubtableProcessor2.h"
35#include "NonContextualGlyphSubst.h"
36#include "NonContextualGlyphSubstProc2.h"
37#include "SegmentArrayProcessor2.h"
38#include "LEGlyphStorage.h"
39#include "LESwaps.h"
40
41U_NAMESPACE_BEGIN
42
43UOBJECT_DEFINE_RTTI_IMPLEMENTATION(SegmentArrayProcessor2)
44
45SegmentArrayProcessor2::SegmentArrayProcessor2()
46{
47}
48
49SegmentArrayProcessor2::SegmentArrayProcessor2(const LEReferenceTo<MorphSubtableHeader2> &morphSubtableHeader, LEErrorCode &success)
50  : NonContextualGlyphSubstitutionProcessor2(morphSubtableHeader, success)
51{
52  const LEReferenceTo<NonContextualGlyphSubstitutionHeader2> header(morphSubtableHeader, success);
53  segmentArrayLookupTable = LEReferenceTo<SegmentArrayLookupTable>(morphSubtableHeader,  success, &header->table); // don't parent to 'header' as it is on the stack
54}
55
56SegmentArrayProcessor2::~SegmentArrayProcessor2()
57{
58}
59
60void SegmentArrayProcessor2::process(LEGlyphStorage &glyphStorage, LEErrorCode &success)
61{
62    const LookupSegment *segments = segmentArrayLookupTable->segments;
63    le_int32 glyphCount = glyphStorage.getGlyphCount();
64    le_int32 glyph;
65
66    if (LE_FAILURE(success)) return;
67
68    for (glyph = 0; glyph < glyphCount; glyph += 1) {
69        LEGlyphID thisGlyph = glyphStorage[glyph];
70        // lookupSegment already range checked by lookupSegment() function.
71        const LookupSegment *lookupSegment = segmentArrayLookupTable->lookupSegment(segmentArrayLookupTable, segments, thisGlyph, success);
72
73        if (lookupSegment != NULL&& LE_SUCCESS(success))  {
74            TTGlyphID firstGlyph = SWAPW(lookupSegment->firstGlyph);
75            TTGlyphID lastGlyph = SWAPW(lookupSegment->lastGlyph);
76            le_int16  offset = SWAPW(lookupSegment->value);
77            TTGlyphID thisGlyphId=  LE_GET_GLYPH(thisGlyph);
78            LEReferenceToArrayOf<TTGlyphID> glyphArray(subtableHeader, success, offset, lastGlyph - firstGlyph + 1);
79            if (offset != 0 && thisGlyphId <= lastGlyph && thisGlyphId >= firstGlyph && LE_SUCCESS(success) ) {
80              TTGlyphID   newGlyph   = SWAPW(glyphArray[thisGlyphId]);
81              glyphStorage[glyph] = LE_SET_GLYPH(thisGlyph, newGlyph);
82            }
83        }
84    }
85}
86
87U_NAMESPACE_END
88