91 lines
2.5 KiB
C++
91 lines
2.5 KiB
C++
/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2017 KiCad Developers, see AUTHORS.txt for contributors.
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*
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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; either version 2
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* of the License, or (at your option) any later version.
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*
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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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*
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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, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "stdstream_line_reader.h"
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#include <ios>
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STDISTREAM_LINE_READER::STDISTREAM_LINE_READER() :
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LINE_READER( 0 ),
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m_stream( nullptr )
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{
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m_line = nullptr;
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m_lineNum = 0;
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}
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STDISTREAM_LINE_READER::~STDISTREAM_LINE_READER()
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{
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// this is only a view into a string, it cant be deleted by the base
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m_line = nullptr;
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}
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char* STDISTREAM_LINE_READER::ReadLine()
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{
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getline( *m_stream, m_buffer );
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m_buffer.append( 1, '\n' );
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m_length = m_buffer.size();
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m_line = (char*) m_buffer.data(); //ew why no const??
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// lineNum is incremented even if there was no line read, because this
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// leads to better error reporting when we hit an end of file.
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++m_lineNum;
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return m_stream->eof() ? nullptr : m_line;
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}
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void STDISTREAM_LINE_READER::setStream( std::istream& aStream )
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{
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// Could be done with a virtual getStream function, but the
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// virtual function call is a noticable (but minor) penalty within
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// ReadLine() in tight loops
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m_stream = &aStream;
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}
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IFSTREAM_LINE_READER::IFSTREAM_LINE_READER( const wxFileName& aFileName ) :
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m_fStream( aFileName.GetFullName().ToUTF8() )
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{
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if( !m_fStream.is_open() )
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{
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wxString msg = wxString::Format(
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_( "Unable to open filename \"%s\" for reading" ), aFileName.GetFullPath().GetData() );
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THROW_IO_ERROR( msg );
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}
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setStream( m_fStream );
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m_source = aFileName.GetFullName();
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}
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void IFSTREAM_LINE_READER::Rewind()
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{
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m_fStream.clear() ;
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m_fStream.seekg(0, std::ios::beg );
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}
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