diff options
Diffstat (limited to 'libs/pbd/epa.cc')
-rw-r--r-- | libs/pbd/epa.cc | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/libs/pbd/epa.cc b/libs/pbd/epa.cc new file mode 100644 index 0000000000..71387b4c23 --- /dev/null +++ b/libs/pbd/epa.cc @@ -0,0 +1,72 @@ +/* + 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); + } +} |