grive2/libgrive/src/util/OS.cc

/*
	grive: an GPL program to sync a local directory with Google Drive
	Copyright (C) 2012  Wan Wai Ho

	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 version 2
	of the License.

	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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/

#include "OS.hh"

#include "DateTime.hh"
#include "Exception.hh"
#include "Path.hh"

// OS specific headers
#include <errno.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>

namespace gr { namespace os {

void MakeDir( const Path& dir )
{
	MakeDir( dir.Str() ) ;
}

void MakeDir( const std::string& dir )
{
	mkdir( dir.c_str(), 0700 ) ;
}

DateTime FileMTime( const Path& filename )
{
	return FileMTime( filename.Str() ) ;
}

DateTime FileMTime( const std::string& filename )
{
	struct stat s = {} ;
	if ( ::stat( filename.c_str(), &s ) != 0 )
	{
		// save errno to prevend overwritten later
		int err_num = errno ;
		throw Exception()
			<< expt::ErrMsg( "cannot get file attribute of " + filename )
			<< expt::ErrorNumber( err_num ) ;
	}
	
#if defined __APPLE__ && defined __DARWIN_64_BIT_INO_T
	return DateTime( s.st_mtimespec.tv_sec, s.st_mtimespec.tv_nsec ) ;
#else
	return DateTime( s.st_mtim.tv_sec, s.st_mtim.tv_nsec);
#endif
}

void SetFileTime( const Path& filename, const DateTime& t )
{
	return SetFileTime( filename.Str(), t ) ;
}

void SetFileTime( const std::string& filename, const DateTime& t )
{
	struct timeval tvp[2] = { t.Tv(), t.Tv() } ;
	if ( ::utimes( filename.c_str(), tvp ) != 0 )
		throw expt::ErrMsg( "cannot set file time" ) ;
}

} } // end of namespaces