Line data    Source code

       1             : /*
       2             :     Mosh: the mobile shell
       3             :     Copyright 2012 Keith Winstein
       4             : 
       5             :     This program is free software: you can redistribute it and/or modify
       6             :     it under the terms of the GNU General Public License as published by
       7             :     the Free Software Foundation, either version 3 of the License, or
       8             :     (at your option) any later version.
       9             : 
      10             :     This program is distributed in the hope that it will be useful,
      11             :     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12             :     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      13             :     GNU General Public License for more details.
      14             : 
      15             :     You should have received a copy of the GNU General Public License
      16             :     along with this program.  If not, see <http://www.gnu.org/licenses/>.
      17             : 
      18             :     In addition, as a special exception, the copyright holders give
      19             :     permission to link the code of portions of this program with the
      20             :     OpenSSL library under certain conditions as described in each
      21             :     individual source file, and distribute linked combinations including
      22             :     the two.
      23             : 
      24             :     You must obey the GNU General Public License in all respects for all
      25             :     of the code used other than OpenSSL. If you modify file(s) with this
      26             :     exception, you may extend this exception to your version of the
      27             :     file(s), but you are not obligated to do so. If you do not wish to do
      28             :     so, delete this exception statement from your version. If you delete
      29             :     this exception statement from all source files in the program, then
      30             :     also delete it here.
      31             : */
      32             : 
      33             : #ifndef USER_HPP
      34             : #define USER_HPP
      35             : 
      36             : #include <deque>
      37             : #include <list>
      38             : #include <string>
      39             : #include <assert.h>
      40             : 
      41             : #include "parseraction.h"
      42             : 
      43             : namespace Network {
      44             :   using std::deque;
      45             :   using std::list;
      46             :   using std::string;
      47             : 
      48             :   enum UserEventType {
      49             :     UserByteType = 0,
      50             :     ResizeType = 1
      51             :   };
      52             : 
      53       19997 :   class UserEvent
      54             :   {
      55             :   public:
      56             :     UserEventType type;
      57             :     Parser::UserByte userbyte;
      58             :     Parser::Resize resize;
      59             : 
      60        3545 :     UserEvent( const Parser::UserByte & s_userbyte ) : type( UserByteType ), userbyte( s_userbyte ), resize( -1, -1 ) {}
      61        1484 :     UserEvent( const Parser::Resize & s_resize ) : type( ResizeType ), userbyte( 0 ), resize( s_resize ) {}
      62             : 
      63             :   private:
      64             :     UserEvent();
      65             : 
      66             :   public:
      67        8773 :     bool operator==( const UserEvent &x ) const { return ( type == x.type ) && ( userbyte == x.userbyte ) && ( resize == x.resize ); }
      68             :   };
      69             : 
      70       26766 :   class UserStream
      71             :   {
      72             :   private:
      73             :     deque<UserEvent> actions;
      74             :     
      75             :   public:
      76        2846 :     UserStream() : actions() {}
      77             :     
      78        1183 :     void push_back( const Parser::UserByte & s_userbyte ) { actions.push_back( UserEvent( s_userbyte ) ); }
      79         492 :     void push_back( const Parser::Resize & s_resize ) { actions.push_back( UserEvent( s_resize ) ); }
      80             :     
      81        1946 :     bool empty( void ) const { return actions.empty(); }
      82        4119 :     size_t size( void ) const { return actions.size(); }
      83             :     const Parser::Action &get_action( unsigned int i ) const;
      84             :     
      85             :     /* interface for Network::Transport */
      86             :     void subtract( const UserStream *prefix );
      87             :     string diff_from( const UserStream &existing ) const;
      88           0 :     string init_diff( void ) const { return diff_from( UserStream() ); };
      89             :     void apply_string( const string &diff );
      90       31242 :     bool operator==( const UserStream &x ) const { return actions == x.actions; }
      91             : 
      92             :     bool compare( const UserStream & ) { return false; }
      93             :   };
      94             : }
      95             : 
      96             : #endif