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140 lines
3.9 KiB
C++
140 lines
3.9 KiB
C++
// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of the Andrey N. Sabelnikov nor the
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// names of its contributors may be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER BE LIABLE FOR ANY
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// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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#ifndef _FILE_IO_UTILS_H_
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#define _FILE_IO_UTILS_H_
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#include <iostream>
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#include <boost/filesystem/path.hpp>
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#include <boost/filesystem/operations.hpp>
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namespace epee
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{
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namespace file_io_utils
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{
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inline
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bool is_file_exist(const std::string& path)
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{
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boost::filesystem::path p(path);
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return boost::filesystem::exists(p);
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}
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inline
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bool save_string_to_file(const std::string& path_to_file, const std::string& str)
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{
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try
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{
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std::ofstream fstream;
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fstream.exceptions(std::ifstream::failbit | std::ifstream::badbit);
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fstream.open(path_to_file, std::ios_base::binary | std::ios_base::out | std::ios_base::trunc);
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fstream << str;
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fstream.close();
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return true;
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}
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catch(...)
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{
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return false;
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}
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}
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inline
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bool get_file_time(const std::string& path_to_file, time_t& ft)
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{
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boost::system::error_code ec;
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ft = boost::filesystem::last_write_time(boost::filesystem::path(path_to_file), ec);
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if(!ec)
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return true;
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else
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return false;
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}
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inline
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bool set_file_time(const std::string& path_to_file, const time_t& ft)
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{
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boost::system::error_code ec;
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boost::filesystem::last_write_time(boost::filesystem::path(path_to_file), ft, ec);
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if(!ec)
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return true;
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else
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return false;
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}
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inline
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bool load_file_to_string(const std::string& path_to_file, std::string& target_str)
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{
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try
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{
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std::ifstream fstream;
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fstream.exceptions(std::ifstream::failbit | std::ifstream::badbit);
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fstream.open(path_to_file, std::ios_base::binary | std::ios_base::in | std::ios::ate);
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std::ifstream::pos_type file_size = fstream.tellg();
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if(file_size > 1000000000)
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return false;//don't go crazy
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size_t file_size_t = static_cast<size_t>(file_size);
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target_str.resize(file_size_t);
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fstream.seekg (0, std::ios::beg);
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fstream.read((char*)target_str.data(), target_str.size());
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fstream.close();
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return true;
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}
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catch(...)
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{
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return false;
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}
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}
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inline
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bool append_string_to_file(const std::string& path_to_file, const std::string& str)
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{
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try
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{
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std::ofstream fstream;
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fstream.exceptions(std::ifstream::failbit | std::ifstream::badbit);
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fstream.open(path_to_file.c_str(), std::ios_base::binary | std::ios_base::out | std::ios_base::app);
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fstream << str;
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fstream.close();
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return true;
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}
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catch(...)
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{
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return false;
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}
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}
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}
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}
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#endif //_FILE_IO_UTILS_H_
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