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/*
Copyright (C) 2010 Paul Davis
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <cstdlib>
#include <iostream>
#include "pbd/epa.h"
extern char** environ;
using namespace PBD;
using namespace std;
EnvironmentalProtectionAgency* EnvironmentalProtectionAgency::_global_epa = 0;
EnvironmentalProtectionAgency::EnvironmentalProtectionAgency ()
{
save ();
}
EnvironmentalProtectionAgency::~EnvironmentalProtectionAgency()
{
restore ();
}
void
EnvironmentalProtectionAgency::save ()
{
e.clear ();
for (size_t i = 0; environ[i]; ++i) {
string estring = environ[i];
string::size_type equal = estring.find_first_of ('=');
if (equal == string::npos) {
/* say what? an environ value without = ? */
continue;
}
string before = estring.substr (0, equal);
string after = estring.substr (equal+1);
cerr << "Save [" << before << "] = " << after << endl;
e.insert (pair<string,string>(before,after));
}
}
void
EnvironmentalProtectionAgency::restore ()
{
for (map<string,string>::iterator i = e.begin(); i != e.end(); ++i) {
cerr << "Restore [" << i->first << "] = " << i->second << endl;
setenv (i->first.c_str(), i->second.c_str(), 1);
}
}
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