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Diffstat (limited to '')
-rw-r--r-- | dbaccess/source/core/inc/composertools.hxx | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/dbaccess/source/core/inc/composertools.hxx b/dbaccess/source/core/inc/composertools.hxx new file mode 100644 index 000000000..337064757 --- /dev/null +++ b/dbaccess/source/core/inc/composertools.hxx @@ -0,0 +1,121 @@ +/* -*- 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 . + */ + +#pragma once + +#include <rtl/ustrbuf.hxx> +#include <osl/diagnose.h> + +namespace dbaccess +{ + + // TokenComposer + struct TokenComposer + { + private: + #ifdef DBG_UTIL + bool m_bUsed; + #endif + + protected: + OUStringBuffer m_aBuffer; + + public: + OUString getComposedAndClear() + { + #ifdef DBG_UTIL + m_bUsed = true; + #endif + return m_aBuffer.makeStringAndClear(); + } + + void clear() + { + #ifdef DBG_UTIL + m_bUsed = false; + #endif + m_aBuffer.setLength(0); + } + + public: + TokenComposer() + #ifdef DBG_UTIL + :m_bUsed( false ) + #endif + { + } + + virtual ~TokenComposer() + { + } + + TokenComposer(TokenComposer const &) = default; + TokenComposer(TokenComposer &&) = default; + TokenComposer & operator =(TokenComposer const &) = default; + TokenComposer & operator =(TokenComposer &&) = default; + + void operator() (const OUString& lhs) + { + append(lhs); + } + + void append( const OUString& lhs ) + { + #ifdef DBG_UTIL + OSL_ENSURE( !m_bUsed, "FilterCreator::append: already used up!" ); + #endif + if ( !lhs.isEmpty() ) + { + if ( !m_aBuffer.isEmpty() ) + appendNonEmptyToNonEmpty( lhs ); + else + m_aBuffer.append( lhs ); + } + } + + /// append the given part. Only to be called when both the part and our buffer so far are not empty + virtual void appendNonEmptyToNonEmpty( const OUString& lhs ) = 0; + }; + + // FilterCreator + struct FilterCreator : public TokenComposer + { + virtual void appendNonEmptyToNonEmpty( const OUString& lhs ) override + { + m_aBuffer.insert( 0, ' ' ); + m_aBuffer.insert( 0, '(' ); + m_aBuffer.append( " ) AND ( " ); + m_aBuffer.append( lhs ); + m_aBuffer.append( " )" ); + } + }; + + // FilterCreator + struct OrderCreator : public TokenComposer + { + virtual void appendNonEmptyToNonEmpty( const OUString& lhs ) override + { + m_aBuffer.append( ", " ); + m_aBuffer.append( lhs ); + } + }; + +} // namespace dbaccess + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |