#include <iostream>
#include <string>
#include <vector>
#include <stdio.h>
#include <errno.h>
#include "d_exec.h"

using namespace std;

// ------------------------------------------------------------------------
d_exec::d_exec( void )
{
	// do nothing
}
// ------------------------------------------------------------------------
//d_exec::d_exec( string w )
//{
//	char ss[1024];
//	strcpy( ss, w.c_str() );
//
//	this->prun( ss );
//}
/// ------------------------------------------------------------------------
//d_exec::d_exec( char *w )
//{
//	this->prun( w );
//}
//// ------------------------------------------------------------------------
void d_exec::prun( string w )
{
	char ss[1024];
	strcpy( ss, w.c_str() );

	this->prun( ss );
}
// ------------------------------------------------------------------------
int d_exec::prun( const char *w )
{
	FILE *tr;
	char ch;
	string tmp;

	tr = popen( w, "r" );

	//cout << "errno = " << errno << endl;

	//if( tr == NULL )
	//{
	//	cout << "fork or pipe failed or can't allocate memory" << endl;
	//	return( 0 );
	//}

	//if( tr == -1 )
	//{
	//	cout << "wait4 returned an error, or something else went wrong" << endl;
	//	return( 0 );
	//}

	while( !feof(tr) )
	{
		ch = fgetc( tr );

		if( ch == '\n' )
		{
			if( !feof(tr) )
			{
				data.push_back( tmp );
				tmp = "";
		    }
		} else {
			if( !feof(tr) ) tmp += ch;
		}
	}

	if( tmp.size() > 0 )
	{
		data.push_back( tmp );
	}

	pclose( tr );

	//cout << "errno = " << errno << endl;

	return( 0 );
}
// ------------------------------------------------------------------------
//void d_exec::spit( void )
ostream &operator<<( ostream &out, const d_exec &L )
{
	int i;

	for( i = 0; i < L.data.size(); i++ )
	{
		//cout << i << "\t" << data[i] << endl;
		out << i << " =\t" << L.data[i] << endl;
	}

	return( out );
}
// ------------------------------------------------------------------------