Chris@16: // Copyright Vladimir Prus 2004.
Chris@16: // Distributed under the Boost Software License, Version 1.0.
Chris@16: // (See accompanying file LICENSE_1_0.txt
Chris@16: // or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: 
Chris@16: #ifndef BOOST_ENVIRONMENT_ITERATOR_VP_2004_05_14
Chris@16: #define BOOST_ENVIRONMENT_ITERATOR_VP_2004_05_14
Chris@16: 
Chris@16: #include "eof_iterator.hpp"
Chris@16: 
Chris@16: #include <utility>
Chris@16: #include <string>
Chris@16: #include <cassert>
Chris@16: 
Chris@16: namespace boost {
Chris@16: 
Chris@16:     class environment_iterator 
Chris@16:         : public eof_iterator<environment_iterator, 
Chris@16:                               std::pair<std::string, std::string> >
Chris@16:     {
Chris@16:     public:
Chris@16:         environment_iterator(char** environment)
Chris@16:         : m_environment(environment)
Chris@16:         {
Chris@16:             get();
Chris@16:         }
Chris@16:         
Chris@16:         environment_iterator()
Chris@16:         {
Chris@16:             found_eof();
Chris@16:         }
Chris@16:         
Chris@16:         void get()
Chris@16:         {
Chris@16:             if (*m_environment == 0)
Chris@16:                 found_eof();
Chris@16:             else {
Chris@16:                 std::string s(*m_environment);
Chris@16:                 std::string::size_type n = s.find('=');
Chris@16:                 assert(n != s.npos);
Chris@16:                 value().first = s.substr(0, n);
Chris@16:                 value().second = s.substr(n+1);
Chris@16:             }            
Chris@16:             ++m_environment;
Chris@16:         }
Chris@16:         
Chris@16:     private:
Chris@16:         char** m_environment;
Chris@16:     };
Chris@16: }
Chris@16: #endif