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Diffstat (limited to 'src/third_party/boost-1.69.0/boost/test/utils/runtime/cla/argv_traverser.hpp')
-rw-r--r-- | src/third_party/boost-1.69.0/boost/test/utils/runtime/cla/argv_traverser.hpp | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/src/third_party/boost-1.69.0/boost/test/utils/runtime/cla/argv_traverser.hpp b/src/third_party/boost-1.69.0/boost/test/utils/runtime/cla/argv_traverser.hpp new file mode 100644 index 00000000000..d65c88e9205 --- /dev/null +++ b/src/third_party/boost-1.69.0/boost/test/utils/runtime/cla/argv_traverser.hpp @@ -0,0 +1,106 @@ +// (C) Copyright Gennadiy Rozental 2001. +// Use, modification, and distribution are subject to the +// Boost Software License, Version 1.0. (See accompanying file +// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) + +// See http://www.boost.org/libs/test for the library home page. +// +// File : $RCSfile$ +// +// Version : $Revision$ +// +// Description : defines facility to hide input traversing details +// *************************************************************************** + +#ifndef BOOST_TEST_UTILS_RUNTIME_CLA_ARGV_TRAVERSER_HPP +#define BOOST_TEST_UTILS_RUNTIME_CLA_ARGV_TRAVERSER_HPP + +// Boost.Test Runtime parameters +#include <boost/test/utils/runtime/fwd.hpp> +#include <cstring> + +#include <boost/test/detail/suppress_warnings.hpp> + +namespace boost { +namespace runtime { +namespace cla { + +// ************************************************************************** // +// ************** runtime::cla::argv_traverser ************** // +// ************************************************************************** // + +class argv_traverser { + typedef char const** argv_type; +public: + /// Constructs traverser based on argc/argv pair + /// argv is taken "by reference" and later can be + /// updated in remainder method + argv_traverser( int argc, argv_type argv ) + : m_argc( argc ) + , m_curr_token( 0 ) + , m_token_size( 0 ) + , m_argv( argv ) + { + // save program name + save_token(); + } + + /// Returns new argc + int remainder() + { + return m_argc; + } + + /// Returns true, if we reached end on input + bool eoi() const + { + return m_curr_token == m_argc; + } + + /// Returns current token in the input + cstring current_token() + { + if( eoi() ) + return cstring(); + + return cstring( m_argv[m_curr_token], m_token_size ); + } + + /// Saves current token for remainder + void save_token() + { + ++m_curr_token; + + if( !eoi() ) + m_token_size = ::strlen( m_argv[m_curr_token] ); + } + + /// Commit current token and iterate to next one + void next_token() + { + if( !eoi() ) { + for( std::size_t i = m_curr_token; i < m_argc-1; ++i ) + m_argv[i] = m_argv[i + 1]; + + --m_argc; + + m_token_size = ::strlen( m_argv[m_curr_token] ); + } + } + +private: + + // Data members + std::size_t m_argc; // total number of arguments + std::size_t m_curr_token; // current token index in argv + std::size_t m_token_size; // current token size + argv_type m_argv; // all arguments +}; + +} // namespace cla +} // namespace runtime +} // namespace boost + +#include <boost/test/detail/enable_warnings.hpp> + +#endif // BOOST_TEST_UTILS_RUNTIME_CLA_ARGV_TRAVERSER_HPP |