Console/Executor.cc

   1 // $Id$
   2 //
   3 // Copyright (C) 2008
   4 // Fraunhofer Institute for Open Communication Systems (FOKUS)
   5 // Competence Center NETwork research (NET), St. Augustin, GERMANY
   6 //     Stefan Bund <g0dil@berlios.de>
   7 //
   8 // This program is free software; you can redistribute it and/or modify
   9 // it under the terms of the GNU General Public License as published by
  10 // the Free Software Foundation; either version 2 of the License, or
  11 // (at your option) any later version.
  12 //
  13 // This program is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17 //
  18 // You should have received a copy of the GNU General Public License
  19 // along with this program; if not, write to the
  20 // Free Software Foundation, Inc.,
  21 // 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  22
  23 /** \file
  24     \brief Executor non-inline non-template implementation */
  25
  26 #include "Executor.hh"
  27 //#include "Executor.ih"
  28
  29 // Custom includes
  30
  31 //#include "Executor.mpp"
  32 #define prefix_
  33 ///////////////////////////////cc.p////////////////////////////////////////
  34
  35 ///////////////////////////////////////////////////////////////////////////
  36 // senf::console::Executor
  37
  38 prefix_ bool senf::console::Executor::operator()(ParseCommandInfo const & command,
  39                                                  std::ostream & output)
  40 {
  41     SENF_LOG(( "Executing: " << command ));
  42
  43     if (cwd_.expired())
  44         cwd_ = boost::static_pointer_cast<DirectoryNode>(
  45             root().shared_from_this());
  46
  47     switch(command.builtin()) {
  48     case ParseCommandInfo::NoBuiltin :
  49         break;
  50
  51     case ParseCommandInfo::BuiltinCD :
  52         if ( command.arguments() &&
  53              ! chdir(command.arguments().begin()[0]) )
  54             output << "invalid directory\n";
  55         break;
  56
  57     case ParseCommandInfo::BuiltinLS :
  58         for (DirectoryNode::child_iterator i (cwd().children().begin());
  59              i != cwd().children().end(); ++i)
  60             output << i->first << "\n";
  61         break;
  62
  63     case ParseCommandInfo::BuiltinPUSHD :
  64         dirstack_.push_back(cwd_);
  65         if ( command.arguments()
  66              && ! chdir(command.arguments().begin()[0]) )
  67             output << "invalid directory\n";
  68         break;
  69
  70     case ParseCommandInfo::BuiltinPOPD :
  71         if (! dirstack_.empty()) {
  72             cwd_ = dirstack_.back();
  73             dirstack_.pop_back();
  74         }
  75         break;
  76
  77     case ParseCommandInfo::BuiltinEXIT :
  78         throw ExitException();
  79     }
  80     return true;
  81 }
  82
  83 prefix_ bool senf::console::Executor::chdir(ParseCommandInfo::argument_value_type const & path)
  84 {
  85     try {
  86         DirectoryNode::ptr dir (cwd_.lock());
  87         ParseCommandInfo::token_iterator i (path.begin());
  88         ParseCommandInfo::token_iterator const i_end (path.end());
  89         if (i != i_end && i->value().empty()) {
  90             dir = boost::static_pointer_cast<DirectoryNode>(
  91                 root().shared_from_this());
  92             ++ i;
  93         }
  94         for (; i != i_end; ++i) {
  95             if (i->value() == "..") {
  96                 dir = dir->parent();
  97                 if (! dir)
  98                     dir = boost::static_pointer_cast<DirectoryNode>(
  99                         root().shared_from_this());
 100             }
 101             else if (! i->value().empty() && i->value() != ".")
 102                 dir = boost::static_pointer_cast<DirectoryNode>(
 103                     (*dir)[i->value()].shared_from_this());
 104         }
 105         cwd_ = dir;
 106     }
 107     catch (std::bad_cast &) {
 108         return false;
 109     }
 110     catch (UnknownNodeNameException &) {
 111         return false;
 112     }
 113     return true;
 114 }
 115
 116 ///////////////////////////////cc.e////////////////////////////////////////
 117 #undef prefix_
 118 //#include "Executor.mpp"
 119
 120 \f
 121 // Local Variables:
 122 // mode: c++
 123 // fill-column: 100
 124 // comment-column: 40
 125 // c-file-style: "senf"
 126 // indent-tabs-mode: nil
 127 // ispell-local-dictionary: "american"
 128 // compile-command: "scons -u test"
 129 // End: