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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <i18nutil/widthfolding.hxx>
+#include <com/sun/star/uno/Sequence.hxx>
+#include "widthfolding_data.h"
+
+using namespace com::sun::star::uno;
+
+
+namespace i18nutil {
+
+sal_Unicode widthfolding::decompose_ja_voiced_sound_marksChar2Char (sal_Unicode inChar)
+{
+ if (0x30a0 <= inChar && inChar <= 0x30ff) {
+ sal_Int16 i = inChar - 0x3040;
+ if (decomposition_table[i].decomposited_character_1)
+ return 0xFFFF;
+ }
+ return inChar;
+}
+
+/**
+ * Decompose Japanese specific voiced and semi-voiced sound marks.
+ */
+OUString widthfolding::decompose_ja_voiced_sound_marks (const OUString& inStr, sal_Int32 startPos, sal_Int32 nCount, Sequence< sal_Int32 >* pOffset )
+{
+ // Create a string buffer which can hold nCount * 2 + 1 characters.
+ // Its size may become double of nCount.
+ // The reference count is 1 now.
+ rtl_uString * newStr = rtl_uString_alloc(nCount * 2);
+
+ sal_Int32 *p = nullptr;
+ sal_Int32 position = 0;
+ if (pOffset) {
+ // Allocate double of nCount length to offset argument.
+ pOffset->realloc( nCount * 2 );
+ p = pOffset->getArray();
+ position = startPos;
+ }
+
+ // Prepare pointers of unicode character arrays.
+ const sal_Unicode* src = inStr.getStr() + startPos;
+ sal_Unicode* dst = newStr->buffer;
+
+ // Decomposition: GA --> KA + voice-mark
+ while (nCount -- > 0) {
+ sal_Unicode c = *src++;
+ // see http://charts.unicode.org/Web/U3040.html Hiragana (U+3040..U+309F)
+ // see http://charts.unicode.org/Web/U30A0.html Katakana (U+30A0..U+30FF)
+ // Hiragana is not applied to decomposition.
+ // Only Katakana is applied to decomposition
+ if (0x30a0 <= c && c <= 0x30ff) {
+ int i = int(c - 0x3040);
+ sal_Unicode first = decomposition_table[i].decomposited_character_1;
+ if (first != 0x0000) {
+ *dst ++ = first;
+ *dst ++ = decomposition_table[i].decomposited_character_2; // second
+ if (pOffset) {
+ *p ++ = position;
+ *p ++ = position ++;
+ }
+ continue;
+ }
+ }
+ *dst ++ = c;
+ if (pOffset)
+ *p ++ = position ++;
+ }
+ *dst = u'\0';
+
+ newStr->length = sal_Int32(dst - newStr->buffer);
+ if (pOffset)
+ pOffset->realloc(newStr->length);
+ return OUString(newStr, SAL_NO_ACQUIRE); // take ownership
+}
+
+oneToOneMapping& widthfolding::getfull2halfTable()
+{
+ static oneToOneMappingWithFlag table(full2half, sizeof(full2half), FULL2HALF_NORMAL);
+ table.makeIndex();
+ return table;
+}
+
+/**
+ * Compose Japanese specific voiced and semi-voiced sound marks.
+ */
+OUString widthfolding::compose_ja_voiced_sound_marks (const OUString& inStr, sal_Int32 startPos, sal_Int32 nCount, Sequence< sal_Int32 >* pOffset, sal_Int32 nFlags )
+{
+ // Create a string buffer which can hold nCount + 1 characters.
+ // Its size may become equal to nCount or smaller.
+ // The reference count is 1 now.
+ rtl_uString * newStr = rtl_uString_alloc(nCount);
+
+ // Prepare pointers of unicode character arrays.
+ const sal_Unicode* src = inStr.getStr() + startPos;
+ sal_Unicode* dst = newStr->buffer;
+
+ // This conversion algorithm requires at least one character.
+ if (nCount > 0) {
+
+ // .. .. KA VOICE .. ..
+ // ^ ^
+ // previousChar currentChar
+ // ^
+ // position
+ //
+ // will be converted to
+ // .. .. GA .. ..
+
+ sal_Int32 *p = nullptr;
+ sal_Int32 position = 0;
+ if (pOffset) {
+ // Allocate nCount length to offset argument.
+ pOffset->realloc( nCount );
+ p = pOffset->getArray();
+ position = startPos;
+ }
+
+ //
+ sal_Unicode previousChar = *src ++;
+ sal_Unicode currentChar;
+
+ // Composition: KA + voice-mark --> GA
+ while (-- nCount > 0) {
+ currentChar = *src ++;
+ // see http://charts.unicode.org/Web/U3040.html Hiragana (U+3040..U+309F)
+ // see http://charts.unicode.org/Web/U30A0.html Katakana (U+30A0..U+30FF)
+ // 0x3099 COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK
+ // 0x309a COMBINING KATAKANA-HIRAGANA SEMI-VOICED SOUND MARK
+ // 0x309b KATAKANA-HIRAGANA VOICED SOUND MARK
+ // 0x309c KATAKANA-HIRAGANA SEMI-VOICED SOUND MARK
+ int j = currentChar - 0x3099; // 0x3099, 0x309a, 0x309b, 0x309c ?
+
+ if (2 <= j && j <= 3) // 0x309b or 0x309c
+ j -= 2;
+
+ if (0 <= j && j <= 1) {
+ // 0 addresses a code point regarding 0x3099 or 0x309b (voiced sound mark),
+ // 1 is 0x309a or 0x309c (semi-voiced sound mark)
+ int i = int(previousChar - 0x3040); // i acts as an index of array
+ bool bCompose = false;
+
+ if (0 <= i && i <= (0x30ff - 0x3040) && composition_table[i][j])
+ bCompose = true;
+
+ // not to use combined KATAKANA LETTER VU
+ if ( previousChar == 0x30a6 && (nFlags & WIDTHFOLDING_DONT_USE_COMBINED_VU) )
+ bCompose = false;
+
+ if( bCompose ){
+ if (pOffset) {
+ position ++;
+ *p ++ = position ++;
+ }
+ *dst ++ = composition_table[i][j];
+ previousChar = *src ++;
+ nCount --;
+ continue;
+ }
+ }
+ if (pOffset)
+ *p ++ = position ++;
+ *dst ++ = previousChar;
+ previousChar = currentChar;
+ }
+
+ if (nCount == 0) {
+ if (pOffset)
+ *p = position;
+ *dst ++ = previousChar;
+ }
+
+ *dst = u'\0';
+
+ newStr->length = sal_Int32(dst - newStr->buffer);
+ }
+ if (pOffset)
+ pOffset->realloc(newStr->length);
+ return OUString(newStr, SAL_NO_ACQUIRE); // take ownership
+}
+
+oneToOneMapping& widthfolding::gethalf2fullTable()
+{
+ static oneToOneMappingWithFlag table(half2full, sizeof(half2full), HALF2FULL_NORMAL);
+ table.makeIndex();
+ return table;
+}
+
+sal_Unicode widthfolding::getCompositionChar(sal_Unicode c1, sal_Unicode c2)
+{
+ return composition_table[c1 - 0x3040][c2 - 0x3099];
+}
+
+
+oneToOneMapping& widthfolding::getfull2halfTableForASC()
+{
+ static oneToOneMappingWithFlag table(full2half, sizeof(full2half), FULL2HALF_ASC_FUNCTION);
+ table.makeIndex();
+
+ return table;
+}
+
+oneToOneMapping& widthfolding::gethalf2fullTableForJIS()
+{
+ static oneToOneMappingWithFlag table(half2full, sizeof(half2full), HALF2FULL_JIS_FUNCTION);
+ table.makeIndex();
+
+ return table;
+}
+
+oneToOneMapping& widthfolding::getfullKana2halfKanaTable()
+{
+ static oneToOneMappingWithFlag table(full2half, sizeof(full2half), FULL2HALF_KATAKANA_ONLY);
+ table.makeIndex();
+ return table;
+}
+
+oneToOneMapping& widthfolding::gethalfKana2fullKanaTable()
+{
+ static oneToOneMappingWithFlag table(half2full, sizeof(half2full), HALF2FULL_KATAKANA_ONLY);
+ table.makeIndex();
+ return table;
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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