// Copyright Sascha Ochsenknecht 2009.
// Distributed under 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)

#define BOOST_PROGRAM_OPTIONS_SOURCE

#include <boost/program_options/parsers.hpp>
#include <boost/tokenizer.hpp>

#include <string>
#include <vector>

namespace boost { namespace program_options { namespace detail {

   template< class charT >
   std::vector<std::basic_string<charT> > 
   split_unix(
         const std::basic_string<charT>& cmdline, 
         const std::basic_string<charT>& seperator, 
         const std::basic_string<charT>& quote, 
         const std::basic_string<charT>& escape)
   {   
      typedef boost::tokenizer< boost::escaped_list_separator<charT>, 
            typename std::basic_string<charT>::const_iterator, 
            std::basic_string<charT> >  tokenizerT;
         
      tokenizerT tok(cmdline.begin(), cmdline.end(), 
                boost::escaped_list_separator< charT >(escape, seperator, quote));
         
      std::vector< std::basic_string<charT> > result;
      for (typename tokenizerT::iterator cur_token(tok.begin()), end_token(tok.end()); cur_token != end_token; ++cur_token) {
         if (!cur_token->empty())
            result.push_back(*cur_token);
      }
      return result;
   }
   
}}}   // namespace

namespace boost { namespace program_options {

   // Take a command line string and splits in into tokens, according
   // to the given collection of seperators chars.
   BOOST_PROGRAM_OPTIONS_DECL std::vector<std::string> 
   split_unix(const std::string& cmdline, const std::string& seperator, 
         const std::string& quote, const std::string& escape)
   {
      return detail::split_unix< char >(cmdline, seperator, quote, escape);
   }

#ifndef BOOST_NO_STD_WSTRING
   BOOST_PROGRAM_OPTIONS_DECL std::vector<std::wstring>
   split_unix(const std::wstring& cmdline, const std::wstring& seperator, 
         const std::wstring& quote, const std::wstring& escape)
   {
      return detail::split_unix< wchar_t >(cmdline, seperator, quote, escape);
   }
#endif

}}  // namespace