#include <iostream>
#include <string>
#include <vector>
#include <unistd.h>
#include "d_env.h"

using namespace std;

// ------------------------------------------------------------------------
d_env::d_env( void )
{
	int i;
	int cnt = 0;
	extern char **environ;

	while( environ[cnt] != NULL )
	{
		cnt++;
	}

	envar.resize(cnt);

	for( i = 0; i < cnt; i++ )
	{
		if( environ[i] != NULL )
		{
			envar[i] = environ[i];
		}
	}
}
// ------------------------------------------------------------------------
// returns line that contains string w
string d_env::get( char * w )
{
	int i, l;

	for( i = 0; i < envar.size(); i++ )
	{
		l = envar[i].find( w );

		if( l == 0 ) return envar[i];
	}
	return string("");
}
// ------------------------------------------------------------------------
// returns string value of the line that contains string w
string d_env::gets( char * w )
{
	int i, l, r1, r2;

	for( i = 0; i < envar.size(); i++ )
	{
		l = envar[i].find( w );

		if( l == 0 )
		{
			r1 = envar[i].find( "=", 0 ) + 1;
			r2 = envar[i].size() - r1;

			return envar[i].substr(r1, r2);
		}
	}
	return string("");
}
// ------------------------------------------------------------------------
// returns integer value of the line that contains string w
int d_env::geti( char * w )
//string d_env::getv( char * w )
{
	int i, l, r1, r2;
	char tmp[12];
	string tmp2;

	for( i = 0; i < envar.size(); i++ )
	{
		l = envar[i].find( w );

		if( l == 0 )
		{
			r1 = envar[i].find( "=", 0 ) + 1;
			r2 = envar[i].size() - r1;

			//return envar[i].substr(r1, r2);
			tmp2 = envar[i].substr(r1, r2);
			//strcpy( tmp, envar[i].substr(r1,r2);
			strcpy( tmp, tmp2.c_str() );
			return( atoi( tmp ) );
		}
	}
	//return string("");
	return( -1 );
}

// ------------------------------------------------------------------------
ostream &operator<< (ostream &out, const d_env &L )
{
	int i;

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

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