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3rdparty/boost_1_81_0/boost/process/start_dir.hpp 3.42 KB
0b6a182c   Hu Chunming   添加无鉴权注册和注销
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  // Copyright (c) 2006, 2007 Julio M. Merino Vidal
  // Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
  // Copyright (c) 2009 Boris Schaeling
  // Copyright (c) 2010 Felipe Tanus, Boris Schaeling
  // Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
  //
  // 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)
  
  #ifndef BOOST_PROCESS_START_IN_DIR_HPP
  #define BOOST_PROCESS_START_IN_DIR_HPP
  
  #include <boost/process/detail/config.hpp>
  #include <boost/process/detail/handler.hpp>
  #include <boost/process/locale.hpp>
  #include <boost/process/detail/traits/wchar_t.hpp>
  
  #if defined (BOOST_POSIX_API)
  #include <boost/process/detail/posix/start_dir.hpp>
  #elif defined (BOOST_WINDOWS_API)
  #include <boost/process/detail/windows/start_dir.hpp>
  #endif
  
  #include <boost/process/detail/config.hpp>
  #include <string>
  #include <boost/process/filesystem.hpp>
  
  /** \file boost/process/start_dir.hpp
   *
  Header which provides the start_dir property, which allows to set the directory
  the process shall be started in.
  \xmlonly
  <programlisting>
  namespace boost {
    namespace process {
      <emphasis>unspecified</emphasis> <globalname alt="boost::process::start_dir">start_dir</globalname>;
    }
  }
  </programlisting>
  \endxmlonly
  
   */
  
  namespace boost { namespace process { namespace detail {
  
  struct start_dir_
  {
      constexpr start_dir_() {};
  
      template<typename Char>
      api::start_dir_init<Char> operator()(const std::basic_string<Char> & st) const {return {st}; }
      template<typename Char>
      api::start_dir_init<Char> operator()(std::basic_string<Char> && s) const {return {std::move(s)}; }
      template<typename Char>
      api::start_dir_init<Char> operator()(const Char* s)                const {return {s}; }
      api::start_dir_init<typename boost::process::filesystem::path::value_type>
                                operator()(const boost::process::filesystem::path & st) const {return {st.native()}; }
  
      template<typename Char>
      api::start_dir_init<Char> operator= (const std::basic_string<Char> & st) const {return {st}; }
      template<typename Char>
      api::start_dir_init<Char> operator= (std::basic_string<Char> && s) const {return {std::move(s)}; }
      template<typename Char>
      api::start_dir_init<Char> operator= (const Char* s)                const {return {s}; }
      api::start_dir_init<typename boost::process::filesystem::path::value_type>
                                operator= (const boost::process::filesystem::path & st) const {return {st.native()}; }
  
  };
  
  template<> struct is_wchar_t<api::start_dir_init<wchar_t>> : std::true_type {};
  
  template<>
  struct char_converter<char, api::start_dir_init<wchar_t>>
  {
      static api::start_dir_init<char> conv(const api::start_dir_init<wchar_t> & in)
      {
          return api::start_dir_init<char>{::boost::process::detail::convert(in.str())};
      }
  };
  
  template<>
  struct char_converter<wchar_t, api::start_dir_init<char>>
  {
      static api::start_dir_init<wchar_t> conv(const api::start_dir_init<char> & in)
      {
          return api::start_dir_init<wchar_t>{::boost::process::detail::convert(in.str())};
      }
  };
  
  }
  
  /**
  
  To set the start dir, the `start_dir` property is provided.
  
  The valid operations are the following:
  
  \code{.cpp}
  start_dir=path
  start_dir(path)
  \endcode
  
  It can be used with `std::string`, `std::wstring` and `boost::process::filesystem::path`.
  
  
   */
  constexpr ::boost::process::detail::start_dir_ start_dir;
  
  }}
  
  #endif