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/*
Copyright (C) 2011 Laszlo Kajan, Technical University of Munich, Germany
This file is part of librostlab.
librostlab is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef ROSTLAB_STDLIB
#define ROSTLAB_STDLIB 1
#include <errno.h>
#include <stdexcept>
#include <stdarg.h>
#include <stdlib.h>
#include <string>
#include <sstream>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <vector>
namespace rostlab {
typedef std::vector<std::string>
argvec_type;
inline argvec_type
mkargvec( const char* __path, ... );
inline bool file_exists( const std::string& __path );
inline int system( const char* __path, ... );
inline int system( const std::vector<std::string>& __args );
inline std::string tolower( std::string __str );
inline bool file_exists( const std::string& __path )
{
struct stat buf;
if( stat( __path.c_str(), &buf ) ) return false;
return true;
}
inline argvec_type
mkargvec( const char* __path, ... )
{
std::vector<std::string> argvec;
argvec.push_back( __path );
va_list listPointer;
va_start( listPointer, __path );
char* arg;
while( ( arg = va_arg( listPointer, char* ) ) != NULL )
{
argvec.push_back( arg );
}
va_end( listPointer );
return argvec;
}
inline int system( const char* __path, ... )
{
std::vector<std::string> argvec;
argvec.push_back( __path );
va_list listPointer;
va_start( listPointer, __path );
char* arg;
while( ( arg = va_arg( listPointer, char* ) ) != NULL )
{
argvec.push_back( arg );
}
va_end( listPointer );
return system( argvec );
}
inline int system( const std::vector<std::string>& __args )
{
pid_t pid = fork();
if( pid == -1 ) throw runtime_error( strerror( errno ) );
if( !pid )
{
char* argv[ __args.size()+1 ];
for( size_t i = 0; i < __args.size(); ++i ) argv[i] = const_cast<char*>( __args[i].c_str() );
argv[__args.size()] = NULL;
if( execvp( argv[0], argv ) ) throw runtime_error( strerror( errno ) );
exit(0);
}
int status;
if( !waitpid( pid, &status, 0 ) ) throw runtime_error( strerror( errno ) );
if( !WIFEXITED(status) ) throw runtime_error( "child exited abnormally" );
return status;
}
inline std::string tolower( std::string __str )
{
for( std::string::iterator s_i = __str.begin(); s_i != __str.end(); ++s_i ) *s_i = ::tolower( *s_i );
return __str;
}
} // namespace rostlab
#endif // ROSTLAB_STDLIB
// vim:et:ts=4:ai:
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