Introduce boost::filesystem and its dependency cpp.

libs/filesystem/src/codecvt_error_category.cpp

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+//  codecvt_error_category implementation file  ----------------------------------------//
+
+//  Copyright Beman Dawes 2009
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt)
+
+//  Library home page at http://www.boost.org/libs/filesystem
+
+//--------------------------------------------------------------------------------------//
+
+#include <boost/config/warning_disable.hpp>
+
+// define BOOST_FILESYSTEM_SOURCE so that <boost/filesystem/config.hpp> knows
+// the library is being built (possibly exporting rather than importing code)
+#define BOOST_FILESYSTEM_SOURCE
+
+#ifndef BOOST_SYSTEM_NO_DEPRECATED 
+#  define BOOST_SYSTEM_NO_DEPRECATED
+#endif
+
+#include <boost/filesystem/config.hpp>
+#include <boost/filesystem/path_traits.hpp>
+#include <boost/system/error_code.hpp>
+#include <locale>
+#include <vector>
+#include <cstdlib>
+#include <cassert>
+
+//--------------------------------------------------------------------------------------//
+
+namespace
+{
+  class codecvt_error_cat : public boost::system::error_category
+  {
+  public:
+    codecvt_error_cat(){}
+    const char*   name() const BOOST_SYSTEM_NOEXCEPT;
+    std::string    message(int ev) const;
+  };
+
+  const char* codecvt_error_cat::name() const BOOST_SYSTEM_NOEXCEPT
+  {
+    return "codecvt";
+  }
+
+  std::string codecvt_error_cat::message(int ev) const
+  {
+    std::string str;
+    switch (ev)
+    {
+    case std::codecvt_base::ok:
+      str = "ok";
+      break;
+    case std::codecvt_base::partial:
+      str = "partial";
+      break;
+    case std::codecvt_base::error:
+      str = "error";
+      break;
+    case std::codecvt_base::noconv:
+      str = "noconv";
+      break;
+    default:
+      str = "unknown error";
+    }
+    return str;
+  }
+
+} // unnamed namespace
+
+namespace boost
+{
+  namespace filesystem
+  {
+
+    BOOST_FILESYSTEM_DECL const boost::system::error_category& codecvt_error_category()
+    {
+      static const codecvt_error_cat  codecvt_error_cat_const;
+      return codecvt_error_cat_const;
+    }
+
+  } // namespace filesystem
+} // namespace boost