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Diffstat (limited to 'i18npool/source/characterclassification/scripttypedetector.cxx')
| -rw-r--r-- | i18npool/source/characterclassification/scripttypedetector.cxx | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/i18npool/source/characterclassification/scripttypedetector.cxx b/i18npool/source/characterclassification/scripttypedetector.cxx new file mode 100644 index 000000000000..cb90e99075e1 --- /dev/null +++ b/i18npool/source/characterclassification/scripttypedetector.cxx @@ -0,0 +1,182 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org 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 Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +// MARKER(update_precomp.py): autogen include statement, do not remove +#include "precompiled_i18npool.hxx" + +#include <com/sun/star/i18n/CTLScriptType.hpp> +#include <com/sun/star/i18n/ScriptDirection.hpp> +#include <com/sun/star/i18n/UnicodeScript.hpp> +#include <scripttypedetector.hxx> +#include <i18nutil/unicode.hxx> + +// ---------------------------------------------------- +// class ScriptTypeDetector +// ----------------------------------------------------; + +using namespace com::sun::star::i18n; + +ScriptTypeDetector::ScriptTypeDetector() +{ +} + +ScriptTypeDetector::~ScriptTypeDetector() +{ +} + +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 SAL_CALL +ScriptTypeDetector::getScriptDirection( const ::rtl::OUString& Text, sal_Int32 nPos, sal_Int16 defaultScriptDirection ) throw (::com::sun::star::uno::RuntimeException) +{ + 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 SAL_CALL +ScriptTypeDetector::beginOfScriptDirection( const ::rtl::OUString& Text, sal_Int32 nPos, sal_Int16 direction ) throw (::com::sun::star::uno::RuntimeException) +{ + 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 SAL_CALL +ScriptTypeDetector::endOfScriptDirection( const ::rtl::OUString& Text, sal_Int32 nPos, sal_Int16 direction ) throw (::com::sun::star::uno::RuntimeException) +{ + 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 SAL_CALL +ScriptTypeDetector::getCTLScriptType( const ::rtl::OUString& Text, sal_Int32 nPos ) throw (::com::sun::star::uno::RuntimeException) +{ + 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 SAL_CALL +ScriptTypeDetector::beginOfCTLScriptType( const ::rtl::OUString& Text, sal_Int32 nPos ) throw (::com::sun::star::uno::RuntimeException) +{ + 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 SAL_CALL +ScriptTypeDetector::endOfCTLScriptType( const ::rtl::OUString& Text, sal_Int32 nPos ) throw (::com::sun::star::uno::RuntimeException) +{ + 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; + } +} + +const sal_Char sDetector[] = "draft.com.sun.star.i18n.ScriptTypeDetector"; + +rtl::OUString SAL_CALL +ScriptTypeDetector::getImplementationName() throw( ::com::sun::star::uno::RuntimeException ) +{ + return ::rtl::OUString::createFromAscii(sDetector); +} + +sal_Bool SAL_CALL +ScriptTypeDetector::supportsService(const rtl::OUString& ServiceName) throw( ::com::sun::star::uno::RuntimeException ) +{ + return !ServiceName.compareToAscii(sDetector); +} + +::com::sun::star::uno::Sequence< rtl::OUString > SAL_CALL +ScriptTypeDetector::getSupportedServiceNames() throw( ::com::sun::star::uno::RuntimeException ) +{ + ::com::sun::star::uno::Sequence< ::rtl::OUString > aRet(1); + aRet[0] = ::rtl::OUString::createFromAscii(sDetector); + return aRet; +} + |