OpenWalnut  1.4.0
WIOTools.cpp
00001 //---------------------------------------------------------------------------
00002 //
00003 // Project: OpenWalnut ( http://www.openwalnut.org )
00004 //
00005 // Copyright 2009 OpenWalnut Community, BSV@Uni-Leipzig and CNCF@MPI-CBS
00006 // For more information see http://www.openwalnut.org/copying
00007 //
00008 // This file is part of OpenWalnut.
00009 //
00010 // OpenWalnut is free software: you can redistribute it and/or modify
00011 // it under the terms of the GNU Lesser General Public License as published by
00012 // the Free Software Foundation, either version 3 of the License, or
00013 // (at your option) any later version.
00014 //
00015 // OpenWalnut is distributed in the hope that it will be useful,
00016 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00018 // GNU Lesser General Public License for more details.
00019 //
00020 // You should have received a copy of the GNU Lesser General Public License
00021 // along with OpenWalnut. If not, see <http://www.gnu.org/licenses/>.
00022 //
00023 //---------------------------------------------------------------------------
00024 
00025 #include <fstream>
00026 #include <streambuf>
00027 #include <string>
00028 
00029 #include <boost/filesystem.hpp>
00030 
00031 #include "exceptions/WFileNotFound.h"
00032 #include "exceptions/WFileOpenFailed.h"
00033 #include "WIOTools.h"
00034 
00035 std::string readFileIntoString( const std::string& name )
00036 {
00037     return readFileIntoString( boost::filesystem::path( name ) );
00038 }
00039 
00040 std::string readFileIntoString( const boost::filesystem::path& path )
00041 {
00042     std::string filename = path.string();
00043     std::ifstream input( filename.c_str() );
00044     if( !input.is_open() )
00045     {
00046         throw WFileNotFound( std::string( "The file \"" ) + path.string() + std::string( "\" does not exist." ) );
00047     }
00048 
00049     // preallocate space for the string.
00050     std::string str;
00051     input.seekg( 0, std::ios::end );
00052     str.reserve( input.tellg() );
00053     input.seekg( 0, std::ios::beg );
00054 
00055     str.assign( ( std::istreambuf_iterator< char >( input ) ), std::istreambuf_iterator< char >() );
00056 
00057     input.close();
00058     return str;
00059 }
00060 
00061 void writeStringIntoFile( const std::string& name, const std::string& content )
00062 {
00063     writeStringIntoFile( boost::filesystem::path( name ), content );
00064 }
00065 
00066 void writeStringIntoFile( const boost::filesystem::path& path, const std::string& content )
00067 {
00068     std::ofstream outfile( path.string().c_str() );
00069     if( !outfile.is_open() )
00070     {
00071         throw WFileOpenFailed( "The file \"" +  path.string() + "\" could not be opened." );
00072     }
00073 
00074     outfile << content << std::flush;
00075     outfile.close();
00076 }
00077 
00078 boost::filesystem::path tempFileName()
00079 {
00080     return tempFilename();
00081 }
00082 
00083 boost::filesystem::path tempFilename( boost::filesystem::path model )
00084 {
00085     return boost::filesystem::temp_directory_path() / boost::filesystem::unique_path( model );
00086 }
00087