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// K-3D
// Copyright (c) 1995-2004, Timothy M. Shead
//
// Contact: tshead@k-3d.com
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public
// License along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
/** \file
\brief Implements system related functions
\author Romain Behar (romainbehar@yahoo.com)
*/
#include "result.h"
#include "string_modifiers.h"
#include "system_functions.h"
#include <boost/filesystem/path.hpp>
#include <boost/tokenizer.hpp>
#include <sys/stat.h>
// Define some platform-specific odds-and-ends
#ifdef K3D_PLATFORM_WIN32_NATIVE
#define SEARCHPATH_SEPARATOR_STRING ";"
#define DEFAULT_TEMP_DIRECTORY "c:\\"
#define DEFAULT_HOME_DIRECTORY "c:\\"
#include <io.h>
#else // K3D_PLATFORM_WIN32_NATIVE
#define SEARCHPATH_SEPARATOR_STRING ":"
#define DEFAULT_TEMP_DIRECTORY "/tmp"
#define DEFAULT_HOME_DIRECTORY "/"
#endif // !K3D_PLATFORM_WIN32_NATIVE
namespace k3d
{
namespace system
{
const std::string get_env(const std::string& EnvironmentVariable)
{
const char* variable = getenv(EnvironmentVariable.c_str());
if(variable)
return std::string(variable);
return std::string();
}
const boost::filesystem::path get_home_directory()
{
static boost::filesystem::path home_directory;
if(home_directory.empty())
{
if(getenv("HOME"))
{
home_directory = boost::filesystem::path(getenv("HOME"), boost::filesystem::native);
}
else
{
home_directory = boost::filesystem::path(DEFAULT_HOME_DIRECTORY, boost::filesystem::native);
std::cerr << __PRETTY_FUNCTION__ << ": using default home directory [" << home_directory.native_file_string() << "]" << std::endl;
}
}
return home_directory;
}
const boost::filesystem::path get_temp_directory()
{
static boost::filesystem::path temp_directory;
if(temp_directory.empty())
{
if(getenv("TMPDIR"))
{
temp_directory = boost::filesystem::path(getenv("TMPDIR"), boost::filesystem::native);
}
else if(getenv("TMP"))
{
temp_directory = boost::filesystem::path(getenv("TMP"), boost::filesystem::native);
}
else if(getenv("TEMP"))
{
temp_directory = boost::filesystem::path(getenv("TEMP"), boost::filesystem::native);
}
else
{
temp_directory = boost::filesystem::path(DEFAULT_TEMP_DIRECTORY, boost::filesystem::native);
}
}
return temp_directory;
}
bool file_modification_time(const boost::filesystem::path& File, time_t& ModificationTime)
{
struct stat statistics;
if(-1 == stat(File.native_file_string().c_str(), &statistics))
return false;
ModificationTime = statistics.st_mtime;
return true;
}
bool run_process(const std::string& CommandLine, std::ostream& Stream)
{
// Sanity checks ...
return_val_if_fail(CommandLine.size(), false);
// Start the child process ...
FILE* file = popen(CommandLine.c_str(), "r");
return_val_if_fail(file, false);
// Allocate a buffer for reading ...
const unsigned long buffersize = 512;
char* buffer = new char[buffersize+1];
return_val_if_fail(buffer, false);
// Read data from the pipe ...
for(int bytesread = read(fileno(file), buffer, buffersize); bytesread > 0; bytesread = read(fileno(file), buffer, buffersize))
{
buffer[bytesread] = '\0';
Stream << buffer;
}
// Delete the buffer ...
delete[] buffer;
return true;
}
void decompose_path_list(const std::string Input, paths_t& Output)
{
typedef boost::tokenizer<boost::char_separator<char> > tokenizer;
boost::char_separator<char> separator(SEARCHPATH_SEPARATOR_STRING);
tokenizer input(Input, separator);
for(tokenizer::iterator path = input.begin(); path != input.end(); ++path)
{
const std::string path_string = k3d::trim(*path);
if(!path_string.empty())
Output.push_back(boost::filesystem::path(path_string, boost::filesystem::native));
}
}
} // namespace system
} // namespace k3d
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