663939976a
This class works with a string whose ownership is shared with others. The goal is that this will avoid copying strings around. Right now, writing into that string is not implemented, because only reading from an existing string is needed for the single .ini file use case (MBC #1208).
61 lines
1.9 KiB
C++
61 lines
1.9 KiB
C++
/*
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* Copyright (C) 2008-2009 Patrick Ohly <patrick.ohly@gmx.de>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) version 3.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*/
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#ifndef INCL_EVOLUTION_STRING_DATA_BLOB
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# define INCL_EVOLUTION_STRING_DATA_BLOB
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#include <syncevo/DataBlob.h>
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#include <boost/shared_ptr.hpp>
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#include <string>
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#include <syncevo/declarations.h>
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SE_BEGIN_CXX
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/**
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* Stores data chunk in memory.
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* Ownership of that memory is shared.
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*/
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class StringDataBlob : public DataBlob
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{
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std::string m_name;
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boost::shared_ptr<std::string> m_data;
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bool m_readonly;
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public:
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/**
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* @param name name for the data blob
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* @param data reference to string holding data, NULL pointer if it doesn't exist
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* @param readonly true if write() is meant to fail
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*/
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StringDataBlob(const std::string &name,
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const boost::shared_ptr<std::string> &data,
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bool readonly);
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virtual boost::shared_ptr<std::ostream> write();
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virtual boost::shared_ptr<std::istream> read();
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virtual boost::shared_ptr<std::string> getData() { return m_data; }
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virtual std::string getName() const { return m_name; }
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virtual bool exists() const { return m_data; }
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virtual bool isReadonly() const { return m_readonly; }
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};
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SE_END_CXX
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#endif // INCL_EVOLUTION_STRING_DATA_BLOB
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