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// This file is part of the dune-stuff project:
// http://users.dune-project.org/projects/dune-stuff
// Copyright holders: Rene Milk, Felix Schindler
// License: BSD 2-Clause License (http://opensource.org/licenses/BSD-2-Clause)
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#ifndef DUNE_STUFF_FILESYSTEM_HH
#define DUNE_STUFF_FILESYSTEM_HH
#include "debug.hh"
#include "string.hh"
#include "logstreams.hh"
#include <string>
#include <fstream>
#include <boost/filesystem.hpp>
#include <boost/filesystem/fstream.hpp>
namespace Dune {
namespace Stuff {
namespace Common {
//! strip filename from \path if present, return empty string if only filename present
std::string pathOnly(std::string _path)
{
return boost::filesystem::path(_path).parent_path().string();
}
//! return everything after the last slash
std::string filenameOnly(const std::string& _path)
{
#if BOOST_FILESYSTEM_VERSION > 2
return boost::filesystem::path(_path).filename().string();
#else // if BOOST_FILESYSTEM_VERSION > 2
return boost::filesystem::path(_path).filename();
#endif // if BOOST_FILESYSTEM_VERSION > 2
} // filenameOnly
//! may include filename, will be stripped
void testCreateDirectory(const std::string _path)
{
std::string pathonly = pathOnly(_path);
if (!pathonly.empty())
boost::filesystem::create_directories(pathonly);
}
//! pure c++ emulation of system's touch binary
bool touch(const std::string& _path)
{
return std::ofstream(_path.c_str()).is_open();
}
boost::filesystem::ofstream* make_ofstream(const boost::filesystem::path& path,
const std::ios_base::openmode mode = std::ios_base::out)
{
testCreateDirectory(path.string());
return new boost::filesystem::ofstream(path, mode);
}
boost::filesystem::ifstream* make_ifstream(const boost::filesystem::path& path,
const std::ios_base::openmode mode = std::ios_base::in)
{
testCreateDirectory(path.string());
return new boost::filesystem::ifstream(path, mode);
}
//! read a file and output all lines containing filter string to a stream
void fileToStreamFiltered(std::ostream& stream, std::string filename, std::string filter)
{
std::ifstream file(filename.c_str(), std::ifstream::in);
std::string line;
while (file.good()) {
std::getline(file, line);
if (line.find(filter) != std::string::npos)
stream << line << "\n";
}
file.close();
} // fileToStreamFiltered
//! output programs mem usage stats by reading from /proc
void meminfo(Dune::Stuff::Common::LogStream& stream)
{
stream << "Memory info: \n";
stream.resume();
pid_t pid = getpid();
std::stringstream filename;
filename << "/proc/" << pid << "/status";
fileToStreamFiltered(stream, filename.str(), "Vm");
fileToStreamFiltered(stream, "/proc/meminfo", "Mem");
stream << "------------ \n\n" << std::endl;
} // meminfo
} // namespace Common
} // namespace Stuff
} // namespace Dune
#endif // DUNE_STUFF_FILESYSTEM_HH
/** Copyright (c) 2012, Rene Milk
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those
* of the authors and should not be interpreted as representing official policies,
* either expressed or implied, of the FreeBSD Project.
**/