mirror of https://github.com/vitalif/grive2
68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
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/*
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webwrite: an GPL program to sync a local directory with Google Drive
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Copyright (C) 2012 Wan Wai Ho
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation version 2
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of the License.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "StringStream.hh"
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#include <algorithm>
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namespace gr {
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namespace
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{
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// the max size of the cached string. this is to prevent allocating
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// too much memory if client sends a line too long (i.e. DOS attack)
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const std::size_t capacity = 1024 ;
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}
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StringStream::StringStream( const std::string& init ) :
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m_str( init )
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{
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}
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/// Read `size` bytes from the stream. Those bytes will be removed from
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/// the underlying string by calling `std::string::erase()`. Therefore, it is
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/// not a good idea to call Read() to read byte-by-byte.
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std::size_t StringStream::Read( char *data, std::size_t size )
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{
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// wow! no need to count count == 0
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std::size_t count = std::min( m_str.size(), size ) ;
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std::copy( m_str.begin(), m_str.begin() + count, data ) ;
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m_str.erase( 0, count ) ;
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return count ;
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}
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std::size_t StringStream::Write( const char *data, std::size_t size )
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{
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std::size_t count = std::min( size, capacity - m_str.size() ) ;
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m_str.insert( m_str.end(), data, data+count ) ;
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return count ;
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}
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const std::string& StringStream::Str() const
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{
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return m_str ;
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}
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void StringStream::Str( const std::string& str )
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{
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m_str = str ;
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}
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} // end of namespace
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