grive2/libgrive/src/util/StringStream.hh

55 lines
1.5 KiB
C++

/*
webwrite: an GPL program to sync a local directory with Google Drive
Copyright (C) 2012 Wan Wai Ho
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation version 2
of the License.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#pragma once
#include "DataStream.hh"
#include <string>
namespace gr {
/** \brief DataStream base on `std::string`s
StringStream is a DataStream back-end that uses std::string for storage.
It is useful for unit tests and text parsing, especially when used with
StreamParser.
*/
class StringStream : public SeekStream
{
public :
explicit StringStream( const std::string& init = std::string() ) ;
std::size_t Read( char *data, std::size_t size ) ;
std::size_t Write( const char *data, std::size_t size ) ;
off_t Seek( off_t offset, int whence ) ;
off_t Tell() const ;
u64_t Size() const ;
const std::string& Str() const ;
void Str( const std::string& str ) ;
private :
std::string m_str ;
std::size_t m_pos ;
} ;
} // end of namespace