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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 <com/sun/star/i18n/CTLScriptType.hpp>
#include <com/sun/star/i18n/ScriptDirection.hpp>
#include <com/sun/star/i18n/UnicodeScript.hpp>
#include <i18nutil/scripttypedetector.hxx>
#include <i18nutil/unicode.hxx>
using namespace com::sun::star::i18n;
static sal_Int16 scriptDirection[] = {
ScriptDirection::LEFT_TO_RIGHT, // DirectionProperty_LEFT_TO_RIGHT = 0,
ScriptDirection::RIGHT_TO_LEFT, // DirectionProperty_RIGHT_TO_LEFT = 1,
ScriptDirection::LEFT_TO_RIGHT, // DirectionProperty_EUROPEAN_NUMBER = 2,
ScriptDirection::LEFT_TO_RIGHT, // DirectionProperty_EUROPEAN_NUMBER_SEPARATOR = 3,
ScriptDirection::LEFT_TO_RIGHT, // DirectionProperty_EUROPEAN_NUMBER_TERMINATOR = 4,
ScriptDirection::RIGHT_TO_LEFT, // DirectionProperty_ARABIC_NUMBER = 5,
ScriptDirection::NEUTRAL, // DirectionProperty_COMMON_NUMBER_SEPARATOR = 6,
ScriptDirection::NEUTRAL, // DirectionProperty_BLOCK_SEPARATOR = 7,
ScriptDirection::NEUTRAL, // DirectionProperty_SEGMENT_SEPARATOR = 8,
ScriptDirection::NEUTRAL, // DirectionProperty_WHITE_SPACE_NEUTRAL = 9,
ScriptDirection::NEUTRAL, // DirectionProperty_OTHER_NEUTRAL = 10,
ScriptDirection::LEFT_TO_RIGHT, // DirectionProperty_LEFT_TO_RIGHT_EMBEDDING = 11,
ScriptDirection::LEFT_TO_RIGHT, // DirectionProperty_LEFT_TO_RIGHT_OVERRIDE = 12,
ScriptDirection::RIGHT_TO_LEFT, // DirectionProperty_RIGHT_TO_LEFT_ARABIC = 13,
ScriptDirection::RIGHT_TO_LEFT, // DirectionProperty_RIGHT_TO_LEFT_EMBEDDING = 14,
ScriptDirection::RIGHT_TO_LEFT, // DirectionProperty_RIGHT_TO_LEFT_OVERRIDE = 15,
ScriptDirection::NEUTRAL, // DirectionProperty_POP_DIRECTIONAL_FORMAT = 16,
ScriptDirection::NEUTRAL, // DirectionProperty_DIR_NON_SPACING_MARK = 17,
ScriptDirection::NEUTRAL, // DirectionProperty_BOUNDARY_NEUTRAL = 18,
};
sal_Int16 ScriptTypeDetector::getScriptDirection( const OUString& Text, sal_Int32 nPos, sal_Int16 defaultScriptDirection )
{
sal_Int16 dir = scriptDirection[unicode::getUnicodeDirection(Text[nPos])];
return (dir == ScriptDirection::NEUTRAL) ? defaultScriptDirection : dir;
}
// return value '-1' means either the direction on nPos is not same as scriptDirection or nPos is out of range.
sal_Int32 ScriptTypeDetector::beginOfScriptDirection( const OUString& Text, sal_Int32 nPos, sal_Int16 direction )
{
sal_Int32 cPos = nPos;
if (cPos < Text.getLength()) {
for (; cPos >= 0; cPos--) {
if (direction != getScriptDirection(Text, cPos, direction))
break;
}
}
return cPos == nPos ? -1 : cPos + 1;
}
sal_Int32 ScriptTypeDetector::endOfScriptDirection( const OUString& Text, sal_Int32 nPos, sal_Int16 direction )
{
sal_Int32 cPos = nPos;
sal_Int32 len = Text.getLength();
if (cPos >=0) {
for (; cPos < len; cPos++) {
if (direction != getScriptDirection(Text, cPos, direction))
break;
}
}
return cPos == nPos ? -1 : cPos;
}
sal_Int16 ScriptTypeDetector::getCTLScriptType( const OUString& Text, sal_Int32 nPos )
{
static ScriptTypeList typeList[] = {
{ UnicodeScript_kHebrew, UnicodeScript_kHebrew, CTLScriptType::CTL_HEBREW }, // 10
{ UnicodeScript_kArabic, UnicodeScript_kArabic, CTLScriptType::CTL_ARABIC }, // 11
{ UnicodeScript_kDevanagari, UnicodeScript_kDevanagari, CTLScriptType::CTL_INDIC }, // 14
{ UnicodeScript_kThai, UnicodeScript_kThai, CTLScriptType::CTL_THAI }, // 24
{ UnicodeScript_kScriptCount, UnicodeScript_kScriptCount, CTLScriptType::CTL_UNKNOWN } // 88
};
return unicode::getUnicodeScriptType(Text[nPos], typeList, CTLScriptType::CTL_UNKNOWN);
}
// Begin of Script Type is inclusive.
sal_Int32 ScriptTypeDetector::beginOfCTLScriptType( const OUString& Text, sal_Int32 nPos )
{
if (nPos < 0)
return 0;
else if (nPos >= Text.getLength())
return Text.getLength();
else {
sal_Int16 cType = getCTLScriptType(Text, nPos);
for (nPos--; nPos >= 0; nPos--) {
if (cType != getCTLScriptType(Text, nPos))
break;
}
return nPos + 1;
}
}
// End of the Script Type is exclusive, the return value pointing to the begin of next script type
sal_Int32 ScriptTypeDetector::endOfCTLScriptType( const OUString& Text, sal_Int32 nPos )
{
if (nPos < 0)
return 0;
else if (nPos >= Text.getLength())
return Text.getLength();
else {
sal_Int16 cType = getCTLScriptType(Text, nPos);
sal_Int32 len = Text.getLength();
for (nPos++; nPos < len; nPos++) {
if (cType != getCTLScriptType(Text, nPos))
break;
}
return nPos;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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