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[857] | 1 | // Copyright Vladimir Prus 2004.
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| 2 | // Distributed under the Boost Software License, Version 1.0.
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| 3 | // (See accompanying file LICENSE_1_0.txt
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| 4 | // or copy at http://www.boost.org/LICENSE_1_0.txt)
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| 5 |
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| 6 | #ifndef BOOST_ENVIRONMENT_ITERATOR_VP_2004_05_14
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| 7 | #define BOOST_ENVIRONMENT_ITERATOR_VP_2004_05_14
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| 8 |
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| 9 | #include "eof_iterator.hpp"
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| 10 |
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| 11 | #include <utility>
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| 12 | #include <string>
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| 13 | #include <cassert>
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| 14 |
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| 15 | namespace boost {
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| 16 |
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| 17 | class environment_iterator
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| 18 | : public eof_iterator<environment_iterator,
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| 19 | std::pair<std::string, std::string> >
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| 20 | {
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| 21 | public:
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| 22 | environment_iterator(char** environment)
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| 23 | : m_environment(environment)
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| 24 | {
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| 25 | get();
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| 26 | }
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| 27 |
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| 28 | environment_iterator()
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| 29 | {
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| 30 | found_eof();
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| 31 | }
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| 32 |
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| 33 | void get()
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| 34 | {
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| 35 | if (*m_environment == 0)
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| 36 | found_eof();
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| 37 | else {
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| 38 | std::string s(*m_environment);
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| 39 | std::string::size_type n = s.find('=');
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| 40 | assert(n != s.npos);
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| 41 | value().first = s.substr(0, n);
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| 42 | value().second = s.substr(n+1);
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| 43 | }
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| 44 | ++m_environment;
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| 45 | }
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| 46 |
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| 47 | private:
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| 48 | char** m_environment;
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| 49 | };
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| 50 | }
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| 51 | #endif
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