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
22 * questions.
23 *
24 */
25
26/*
27 *
28 * (C) Copyright IBM Corp. 1998-2004 - All Rights Reserved
29 *
30 */
31
32#include "LETypes.h"
33#include "MorphTables.h"
34#include "SubtableProcessor.h"
35#include "NonContextualGlyphSubst.h"
36#include "NonContextualGlyphSubstProc.h"
37#include "SegmentArrayProcessor.h"
38#include "LEGlyphStorage.h"
39#include "LESwaps.h"
40
41U_NAMESPACE_BEGIN
42
43UOBJECT_DEFINE_RTTI_IMPLEMENTATION(SegmentArrayProcessor)
44
45SegmentArrayProcessor::SegmentArrayProcessor()
46{
47}
48
49SegmentArrayProcessor::SegmentArrayProcessor(const LEReferenceTo<MorphSubtableHeader> &morphSubtableHeader, LEErrorCode &success)
50  : NonContextualGlyphSubstitutionProcessor(morphSubtableHeader, success)
51{
52  LEReferenceTo<NonContextualGlyphSubstitutionHeader> header(morphSubtableHeader, success);
53  segmentArrayLookupTable = LEReferenceTo<SegmentArrayLookupTable>(morphSubtableHeader, success, (const SegmentArrayLookupTable*)&header->table);
54}
55
56SegmentArrayProcessor::~SegmentArrayProcessor()
57{
58}
59
60void SegmentArrayProcessor::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        const LookupSegment *lookupSegment = segmentArrayLookupTable->lookupSegment(segmentArrayLookupTable, segments, thisGlyph, success);
71
72        if (lookupSegment != NULL)  {
73            TTGlyphID firstGlyph = SWAPW(lookupSegment->firstGlyph);
74            le_int16  offset = SWAPW(lookupSegment->value);
75
76            if (offset != 0) {
77              LEReferenceToArrayOf<TTGlyphID> glyphArray(subtableHeader, success, offset, LE_UNBOUNDED_ARRAY);
78              if (LE_FAILURE(success)) { continue; }
79              TTGlyphID   newGlyph   = SWAPW(glyphArray(LE_GET_GLYPH(thisGlyph) - firstGlyph, success));
80              glyphStorage[glyph] = LE_SET_GLYPH(thisGlyph, newGlyph);
81            }
82        }
83    }
84}
85
86U_NAMESPACE_END
87