/* -*- 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 <assert.h>
#include <textconversion.hxx>
#include <com/sun/star/i18n/TextConversionType.hpp>
#include <com/sun/star/i18n/TextConversionOption.hpp>
#include <com/sun/star/lang/NoSupportException.hpp>
#include <com/sun/star/linguistic2/ConversionDirection.hpp>
#include <com/sun/star/linguistic2/ConversionDictionaryType.hpp>
#include <com/sun/star/linguistic2/ConversionDictionaryList.hpp>
#include <rtl/ustrbuf.hxx>
#include <unicode/uchar.h>
#include <memory>
using namespace com::sun::star::lang;
using namespace com::sun::star::i18n;
using namespace com::sun::star::linguistic2;
using namespace com::sun::star::uno;
namespace i18npool {
#define SCRIPT_OTHERS 0
#define SCRIPT_HANJA 1
#define SCRIPT_HANGUL 2
TextConversion_ko::TextConversion_ko( const Reference < XComponentContext >& xContext )
: TextConversionService("com.sun.star.i18n.TextConversion_ko")
{
Reference < XInterface > xI;
xI = xContext->getServiceManager()->createInstanceWithContext(
"com.sun.star.i18n.ConversionDictionary_ko", xContext);
if ( xI.is() )
xCD.set( xI, UNO_QUERY );
xCDL = ConversionDictionaryList::create(xContext);
maxLeftLength = maxRightLength = 1;
// get maximum length of word in dictionary
if (xCDL.is()) {
Locale loc("ko", "KR", OUString());
maxLeftLength = xCDL->queryMaxCharCount(loc,
ConversionDictionaryType::HANGUL_HANJA,
ConversionDirection_FROM_LEFT);
maxRightLength = xCDL->queryMaxCharCount(loc,
ConversionDictionaryType::HANGUL_HANJA,
ConversionDirection_FROM_RIGHT);
if (xCD.is()) {
sal_Int32 tmp = xCD->getMaxCharCount(ConversionDirection_FROM_LEFT);
if (tmp > maxLeftLength)
maxLeftLength = tmp;
tmp = xCD->getMaxCharCount(ConversionDirection_FROM_RIGHT);
if (tmp > maxRightLength)
maxRightLength = tmp;
}
} else if (xCD.is()) {
maxLeftLength = xCD->getMaxCharCount(ConversionDirection_FROM_LEFT);
maxRightLength = xCD->getMaxCharCount(ConversionDirection_FROM_RIGHT);
}
}
sal_Int16 checkScriptType(sal_Unicode c)
{
typedef struct {
UBlockCode from;
UBlockCode to;
sal_Int16 script;
} UBlock2Script;
static const UBlock2Script scriptList[] = {
{UBLOCK_HANGUL_JAMO, UBLOCK_HANGUL_JAMO, SCRIPT_HANGUL},
{UBLOCK_CJK_RADICALS_SUPPLEMENT, UBLOCK_BOPOMOFO, SCRIPT_HANJA},
{UBLOCK_HANGUL_COMPATIBILITY_JAMO, UBLOCK_HANGUL_COMPATIBILITY_JAMO, SCRIPT_HANGUL},
{UBLOCK_KANBUN, UBLOCK_YI_RADICALS, SCRIPT_HANJA},
{UBLOCK_HANGUL_SYLLABLES, UBLOCK_HANGUL_SYLLABLES, SCRIPT_HANGUL},
{UBLOCK_CJK_COMPATIBILITY_IDEOGRAPHS, UBLOCK_CJK_COMPATIBILITY_IDEOGRAPHS, SCRIPT_HANJA},
{UBLOCK_COMBINING_HALF_MARKS, UBLOCK_SMALL_FORM_VARIANTS, SCRIPT_HANJA},
{UBLOCK_HALFWIDTH_AND_FULLWIDTH_FORMS, UBLOCK_HALFWIDTH_AND_FULLWIDTH_FORMS, SCRIPT_HANJA},
};
UBlockCode block=ublock_getCode(static_cast<sal_uInt32>(c));
sal_uInt16 i;
for ( i = 0; i < SAL_N_ELEMENTS(scriptList); i++) {
if (block <= scriptList[i].to) break;
}
return (i < SAL_N_ELEMENTS(scriptList) && block >= scriptList[i].from) ? scriptList[i].script : SCRIPT_OTHERS;
}
#ifdef DISABLE_DYNLOADING
extern "C" {
const sal_Unicode* getHangul2HanjaData();
const Hangul_Index* getHangul2HanjaIndex();
sal_Int16 getHangul2HanjaIndexCount();
const sal_uInt16* getHanja2HangulIndex();
const sal_Unicode* getHanja2HangulData();
}
#endif
Sequence< OUString >
TextConversion_ko::getCharConversions(const OUString& aText, sal_Int32 nStartPos, sal_Int32 nLength, bool toHanja)
{
sal_Unicode ch;
Sequence< OUString > output;
#ifndef DISABLE_DYNLOADING
const sal_Unicode* (*getHangul2HanjaData)() = reinterpret_cast<const sal_Unicode* (*)()>(getFunctionBySymbol("getHangul2HanjaData"));
const Hangul_Index* (*getHangul2HanjaIndex)() = reinterpret_cast<const Hangul_Index* (*)()>(getFunctionBySymbol("getHangul2HanjaIndex"));
sal_Int16 (*getHangul2HanjaIndexCount)() = reinterpret_cast<sal_Int16 (*)()>(getFunctionBySymbol("getHangul2HanjaIndexCount"));
const sal_uInt16* (*getHanja2HangulIndex)() = reinterpret_cast<const sal_uInt16* (*)()>(getFunctionBySymbol("getHanja2HangulIndex"));
const sal_Unicode* (*getHanja2HangulData)() = reinterpret_cast<const sal_Unicode* (*)()>(getFunctionBySymbol("getHanja2HangulData"));
#else
#pragma GCC diagnostic push
#ifdef __clang__
#pragma GCC diagnostic warning "-Wbool-conversions"
#else
#pragma GCC diagnostic warning "-Waddress"
#endif
#endif
if (toHanja && getHangul2HanjaIndex && getHangul2HanjaIndexCount && getHangul2HanjaData) {
ch = aText[nStartPos];
const Hangul_Index *Hangul_ko = getHangul2HanjaIndex();
sal_Int16 top = getHangul2HanjaIndexCount();
--top;
sal_Int16 bottom = 0;
while (bottom <= top) {
sal_Int16 current = (top + bottom) / 2;
sal_Unicode current_ch = Hangul_ko[current].code;
if (ch < current_ch)
top = current - 1;
else if (ch > current_ch)
bottom = current + 1;
else {
const sal_Unicode *ptr = getHangul2HanjaData() + Hangul_ko[current].address;
sal_Int16 count = Hangul_ko[current].count;
output.realloc(count);
for (sal_Int16 i = 0; i < count; i++)
output[i] = OUString(ptr + i, 1);
break;
}
}
} else if (! toHanja && getHanja2HangulIndex && getHanja2HangulData)
{
std::unique_ptr<sal_Unicode[]> newStr(new sal_Unicode[nLength+1]);
sal_Int32 count = 0;
while (count < nLength)
{
ch = aText[nStartPos + count];
sal_Unicode address = getHanja2HangulIndex()[ch>>8];
if (address != 0xFFFF)
address = getHanja2HangulData()[address + (ch & 0xFF)];
if (address != 0xFFFF)
newStr[count++] = address;
else
break;
}
if (count > 0)
{
output.realloc(1);
output[0] = OUString(newStr.get(), count);
}
}
#if defined(DISABLE_DYNLOADING)
#pragma GCC diagnostic pop
#endif
return output;
}
static Sequence< OUString >& operator += (Sequence< OUString > &rSeq1, Sequence< OUString > &rSeq2 )
{
if (! rSeq1.hasElements() && rSeq2.hasElements())
rSeq1 = rSeq2;
else if (rSeq2.hasElements()) {
sal_Int32 i, j, k, l;
k = l = rSeq1.getLength();
rSeq1.realloc(l + rSeq2.getLength());
for (i = 0; i < rSeq2.getLength(); i++) {
for (j = 0; j < l; j++)
if (rSeq1[j] == rSeq2[i])
break;
if (j == l)
rSeq1[k++] = rSeq2[i];
}
if (rSeq1.getLength() > k)
rSeq1.realloc(k);
}
return rSeq1;
}
TextConversionResult SAL_CALL
TextConversion_ko::getConversions( const OUString& aText, sal_Int32 nStartPos, sal_Int32 nLength,
const Locale& aLocale, sal_Int16 nConversionType, sal_Int32 nConversionOptions)
{
TextConversionResult result;
Sequence <OUString> candidates;
result.Boundary.startPos = result.Boundary.endPos = 0;
// do conversion only when there are right conversion type and dictionary services.
if (nConversionType != TextConversionType::TO_HANGUL &&
nConversionType != TextConversionType::TO_HANJA)
throw NoSupportException(); // Conversion type is not supported in this service.
sal_Int32 start, end, length = aText.getLength() - nStartPos;
if (length < 0 || nStartPos < 0)
length = 0;
else if (length > nLength)
length = nLength;
sal_Int16 scriptType = SCRIPT_OTHERS;
sal_Int32 len = 1;
bool toHanja = (nConversionType == TextConversionType::TO_HANJA);
// FROM_LEFT: Hangul -> Hanja
// FROM_RIGHT: Hanja -> Hangul
ConversionDirection eDirection = toHanja ? ConversionDirection_FROM_LEFT : ConversionDirection_FROM_RIGHT;
sal_Int32 maxLength = toHanja ? maxLeftLength : maxRightLength;
if (maxLength == 0) maxLength = 1;
// search for a max length of convertible text
for (start = 0, end = 0; start < length; start++) {
if (end <= start) {
scriptType = checkScriptType(aText[nStartPos + start]);
if (nConversionType == TextConversionType::TO_HANJA) {
if (scriptType != SCRIPT_HANGUL) // skip non-Hangul characters
continue;
} else {
if (scriptType != SCRIPT_HANJA) // skip non-Hanja characters
continue;
}
end = start + 1;
}
if (nConversionOptions & TextConversionOption::CHARACTER_BY_CHARACTER) {
result.Candidates = getCharConversions(aText, nStartPos + start, len, toHanja); // char2char conversion
} else {
for (; end < length && end - start < maxLength; end++)
if (checkScriptType(aText[nStartPos + end]) != scriptType)
break;
for (len = end - start; len > 0; len--) {
if (len > 1) {
try {
if (xCDL.is())
result.Candidates = xCDL->queryConversions(aText, start + nStartPos, len,
aLocale, ConversionDictionaryType::HANGUL_HANJA, eDirection, nConversionOptions); // user dictionary
}
catch ( NoSupportException & ) {
// clear reference (when there is no user dictionary) in order
// to not always have to catch this exception again
// in further calls. (save time)
xCDL = nullptr;
}
catch (...) {
// catch all other exceptions to allow
// querying the system dictionary in the next line
}
if (xCD.is() && toHanja) { // System dictionary would not do Hanja_to_Hangul conversion.
candidates = xCD->getConversions(aText, start + nStartPos, len, eDirection, nConversionOptions);
result.Candidates += candidates;
}
} else if (! toHanja) { // do whole word character 2 character conversion for Hanja to Hangul conversion
result.Candidates = getCharConversions(aText, nStartPos + start, length - start, toHanja);
if (result.Candidates.hasElements())
len = result.Candidates[0].getLength();
}
if (result.Candidates.hasElements())
break;
}
}
// found match
if (result.Candidates.hasElements()) {
result.Boundary.startPos = start + nStartPos;
result.Boundary.endPos = start + len + nStartPos;
return result;
}
}
return result;
}
OUString SAL_CALL
TextConversion_ko::getConversion( const OUString& aText, sal_Int32 nStartPos, sal_Int32 nLength,
const Locale& aLocale, sal_Int16 nConversionType, sal_Int32 nConversionOptions)
{
sal_Int32 length = aText.getLength() - nStartPos;
if (length <= 0 || nStartPos < 0)
return OUString();
else if (length > nLength)
length = nLength;
OUStringBuffer aBuf(length + 1);
TextConversionResult result;
const sal_Unicode *str = aText.getStr();
for (sal_Int32 start = nStartPos; length + nStartPos > start; start = result.Boundary.endPos) {
result = getConversions(aText, start, length + nStartPos - start, aLocale, nConversionType, nConversionOptions);
if (result.Boundary.endPos > 0) {
if (result.Boundary.startPos > start)
aBuf.append(str + start, result.Boundary.startPos - start); // append skip portion
aBuf.append(result.Candidates[0]); // append converted portion
} else {
if (length + nStartPos > start)
aBuf.append(str + start, length + nStartPos - start); // append last portion
break;
}
}
return aBuf.makeStringAndClear();
}
OUString SAL_CALL
TextConversion_ko::getConversionWithOffset( const OUString& aText, sal_Int32 nStartPos, sal_Int32 nLength,
const Locale& rLocale, sal_Int16 nConversionType, sal_Int32 nConversionOptions, Sequence<sal_Int32>& offset)
{
offset.realloc(0);
return getConversion(aText, nStartPos, nLength, rLocale, nConversionType, nConversionOptions);
}
sal_Bool SAL_CALL
TextConversion_ko::interactiveConversion( const Locale& /*rLocale*/, sal_Int16 /*nTextConversionType*/, sal_Int32 /*nTextConversionOptions*/ )
{
return true;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
↑ V547 Expression 'length + nStartPos > start' is always true.