| /* |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| /* |
| * |
| * (C) Copyright IBM Corp. 1998-2004 - All Rights Reserved |
| * |
| */ |
| |
| #include "LETypes.h" |
| #include "MorphTables.h" |
| #include "StateTables.h" |
| #include "MorphStateTables.h" |
| #include "SubtableProcessor.h" |
| #include "StateTableProcessor.h" |
| #include "ContextualGlyphSubstProc.h" |
| #include "LEGlyphStorage.h" |
| #include "LESwaps.h" |
| |
| U_NAMESPACE_BEGIN |
| |
| UOBJECT_DEFINE_RTTI_IMPLEMENTATION(ContextualGlyphSubstitutionProcessor) |
| |
| ContextualGlyphSubstitutionProcessor::ContextualGlyphSubstitutionProcessor(const LEReferenceTo<MorphSubtableHeader> &morphSubtableHeader, LEErrorCode &success) |
| : StateTableProcessor(morphSubtableHeader, success), entryTable(), contextualGlyphSubstitutionHeader(morphSubtableHeader, success) |
| { |
| if (LE_FAILURE(success)) return; |
| contextualGlyphSubstitutionHeader.orphan(); |
| substitutionTableOffset = SWAPW(contextualGlyphSubstitutionHeader->substitutionTableOffset); |
| |
| |
| entryTable = LEReferenceToArrayOf<ContextualGlyphSubstitutionStateEntry>(stateTableHeader, success, |
| (const ContextualGlyphSubstitutionStateEntry*)(&stateTableHeader->stHeader), |
| entryTableOffset, LE_UNBOUNDED_ARRAY); |
| int16Table = LEReferenceToArrayOf<le_int16>(stateTableHeader, success, (const le_int16*)(&stateTableHeader->stHeader), |
| 0, LE_UNBOUNDED_ARRAY); // rest of the table as le_int16s |
| } |
| |
| ContextualGlyphSubstitutionProcessor::~ContextualGlyphSubstitutionProcessor() |
| { |
| } |
| |
| void ContextualGlyphSubstitutionProcessor::beginStateTable() |
| { |
| markGlyph = 0; |
| } |
| |
| ByteOffset ContextualGlyphSubstitutionProcessor::processStateEntry(LEGlyphStorage &glyphStorage, le_int32 &currGlyph, EntryTableIndex index, LEErrorCode &success) |
| { |
| const ContextualGlyphSubstitutionStateEntry *entry = entryTable.getAlias(index, success); |
| if (LE_FAILURE(success)) return 0; |
| ByteOffset newState = SWAPW(entry->newStateOffset); |
| le_int16 flags = SWAPW(entry->flags); |
| WordOffset markOffset = SWAPW(entry->markOffset); |
| WordOffset currOffset = SWAPW(entry->currOffset); |
| |
| if (markOffset != 0 && LE_SUCCESS(success)) { |
| if (markGlyph < 0 || markGlyph >= glyphStorage.getGlyphCount()) { |
| success = LE_INDEX_OUT_OF_BOUNDS_ERROR; |
| return 0; |
| } |
| LEGlyphID mGlyph = glyphStorage[markGlyph]; |
| TTGlyphID newGlyph = SWAPW(int16Table.getObject(markOffset + LE_GET_GLYPH(mGlyph), success)); // whew. |
| |
| glyphStorage[markGlyph] = LE_SET_GLYPH(mGlyph, newGlyph); |
| } |
| |
| if (currOffset != 0) { |
| if (currGlyph < 0 || currGlyph >= glyphStorage.getGlyphCount()) { |
| success = LE_INDEX_OUT_OF_BOUNDS_ERROR; |
| return 0; |
| } |
| LEGlyphID thisGlyph = glyphStorage[currGlyph]; |
| TTGlyphID newGlyph = SWAPW(int16Table.getObject(currOffset + LE_GET_GLYPH(thisGlyph), success)); // whew. |
| |
| glyphStorage[currGlyph] = LE_SET_GLYPH(thisGlyph, newGlyph); |
| } |
| |
| if (flags & cgsSetMark) { |
| markGlyph = currGlyph; |
| } |
| |
| if (!(flags & cgsDontAdvance)) { |
| // should handle reverse too! |
| currGlyph += 1; |
| } |
| |
| return newState; |
| } |
| |
| void ContextualGlyphSubstitutionProcessor::endStateTable() |
| { |
| } |
| |
| U_NAMESPACE_END |