senf/Utils/Console/Traits.ih

   1 // $Id$
   2 //
   3 // Copyright (C) 2008
   4 // Fraunhofer Institute for Open Communication Systems (FOKUS)
   5 //
   6 // The contents of this file are subject to the Fraunhofer FOKUS Public License
   7 // Version 1.0 (the "License"); you may not use this file except in compliance
   8 // with the License. You may obtain a copy of the License at
   9 // http://senf.berlios.de/license.html
  10 //
  11 // The Fraunhofer FOKUS Public License Version 1.0 is based on,
  12 // but modifies the Mozilla Public License Version 1.1.
  13 // See the full license text for the amendments.
  14 //
  15 // Software distributed under the License is distributed on an "AS IS" basis,
  16 // WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  17 // for the specific language governing rights and limitations under the License.
  18 //
  19 // The Original Code is Fraunhofer FOKUS code.
  20 //
  21 // The Initial Developer of the Original Code is Fraunhofer-Gesellschaft e.V.
  22 // (registered association), Hansastraße 27 c, 80686 Munich, Germany.
  23 // All Rights Reserved.
  24 //
  25 // Contributor(s):
  26 //   Stefan Bund <g0dil@berlios.de>
  27
  28 /** \file
  29     \brief Traits internal header */
  30
  31 #ifndef IH_SENF_Scheduler_Console_Traits_
  32 #define IH_SENF_Scheduler_Console_Traits_ 1
  33
  34 // Custom includes
  35 #include <string>
  36 #include <limits>
  37 #include <boost/preprocessor/seq/for_each.hpp>
  38 #include <boost/preprocessor/stringize.hpp>
  39 #include <boost/preprocessor/facilities/empty.hpp>
  40 #include <boost/bimap.hpp>
  41 #include <boost/assign/list_inserter.hpp>
  42 #include <boost/algorithm/string/case_conv.hpp>
  43 #include <boost/mpl/if.hpp>
  44
  45 //-/////////////////////////////////////////////////////////////////////////////////////////////////
  46
  47 namespace senf {
  48 namespace console {
  49
  50     template <class _> struct ArgumentTraits;
  51     template <class _> struct ReturnValueTraits;
  52
  53 namespace detail {
  54
  55     template <class CharT>
  56     struct MatchingShortType
  57         : public boost::mpl::if_c<std::numeric_limits<CharT>::is_signed,short,unsigned short>
  58     {};
  59
  60     template <class CharT>
  61     struct CharArgumentTraits
  62         : public ArgumentTraits<typename MatchingShortType<CharT>::type>
  63     {
  64         typedef ArgumentTraits<typename MatchingShortType<CharT>::type> base;
  65         typedef CharT type;
  66         static void parse(ParseCommandInfo::TokensRange const & tokens, CharT & out);
  67         static std::string description();
  68     };
  69
  70     template <class CharT>
  71     struct CharReturnValueTraits
  72         : public ReturnValueTraits<typename MatchingShortType<CharT>::type>
  73     {
  74         typedef CharT type;
  75     };
  76
  77 #ifndef DOXYGEN
  78     struct StringILess
  79     {
  80         bool operator()(std::string const & left, std::string const & right) const
  81             { return boost::algorithm::to_lower_copy(left)
  82                   < boost::algorithm::to_lower_copy(right); }
  83     };
  84
  85     typedef boost::bimap<boost::bimaps::set_of<std::string, StringILess>, long> EnumTable;
  86
  87     long parseEnum(EnumTable const & table, ParseCommandInfo::TokensRange const & tokens);
  88     std::string formatEnum(EnumTable const & table, long value);
  89
  90 #   define SENF_CONSOLE_REGISTER_ENUM_ELT(r,d,e)                        \
  91         BOOST_PP_IF( SENF_CONSOLE_REGISTER_ENUM_HASKEY(e),              \
  92                      SENF_CONSOLE_REGISTER_ENUM_WITHKEY,                \
  93                      SENF_CONSOLE_REGISTER_ENUM_NOKEY )(d, e)
  94
  95 #   define SENF_CONSOLE_REGISTER_ENUM_GOBBLE__key(k,e)
  96 #   define SENF_CONSOLE_REGISTER_ENUM_GET_KEY__key(k,e) k
  97 #   define SENF_CONSOLE_REGISTER_ENUM_GET_ENUM__key(k,e) e
  98 #   define SENF_CONSOLE_REGISTER_ENUM_HASKEY(e)                         \
  99         BOOST_PP_IS_EMPTY( SENF_CAT_RECURS1(SENF_CONSOLE_REGISTER_ENUM_GOBBLE__, e) )
 100
 101 #   define SENF_CONSOLE_REGISTER_ENUM_KEY_GETENUM(e)                    \
 102         SENF_CAT_RECURS2(SENF_CONSOLE_REGISTER_ENUM_GET_ENUM__, e)
 103 #   define SENF_CONSOLE_REGISTER_ENUM_KEY_GETKEY(e)                     \
 104         SENF_CAT_RECURS3(SENF_CONSOLE_REGISTER_ENUM_GET_KEY__, e)
 105
 106 #   define SENF_CONSOLE_REGISTER_ENUM_NOKEY(prefix, e)                  \
 107         ( BOOST_PP_STRINGIZE(e), static_cast<long>(prefix e) )
 108
 109 #   define SENF_CONSOLE_REGISTER_ENUM_WITHKEY(prefix, e)                \
 110         ( SENF_CONSOLE_REGISTER_ENUM_KEY_GETKEY(e),                     \
 111           static_cast<long>(prefix SENF_CONSOLE_REGISTER_ENUM_KEY_GETENUM(e)) )
 112
 113
 114 #   define SENF_CONSOLE_REGISTER_ENUM_(Prefix, Type, Values)                                      \
 115         inline senf::console::detail::EnumTable & senf_console_enum_table(Prefix Type)            \
 116         {                                                                                         \
 117             static senf::console::detail::EnumTable table;                                        \
 118             if (table.empty())                                                                    \
 119                 boost::assign::insert(table)                                                      \
 120                     BOOST_PP_SEQ_FOR_EACH( SENF_CONSOLE_REGISTER_ENUM_ELT, Prefix, Values );      \
 121             return table;                                                                         \
 122         }                                                                                         \
 123         inline void senf_console_parse_argument(                                                  \
 124             senf::console::ParseCommandInfo::TokensRange const & tokens, Prefix Type & out)       \
 125         {                                                                                         \
 126             out = static_cast<Prefix Type>(                                                       \
 127                 senf::console::detail::parseEnum(                                                 \
 128                     senf_console_enum_table( Prefix Type() ), tokens) );                          \
 129         }                                                                                         \
 130         inline void senf_console_format_value(Prefix Type value, std::ostream & os)               \
 131         {                                                                                         \
 132             os << senf::console::detail::formatEnum(                                              \
 133                 senf_console_enum_table( Prefix Type() ), static_cast<long>(value) );             \
 134         }
 135
 136 #endif
 137
 138 }}}
 139
 140 //-/////////////////////////////////////////////////////////////////////////////////////////////////
 141 #endif
 142
 143 \f
 144 // Local Variables:
 145 // mode: c++
 146 // fill-column: 100
 147 // comment-column: 40
 148 // c-file-style: "senf"
 149 // indent-tabs-mode: nil
 150 // ispell-local-dictionary: "american"
 151 // compile-command: "scons -u test"
 152 // End: