1 /*****************************************************************************
3 *****************************************************************************
4 * Copyright (C) 2003 the VideoLAN team
7 * Authors: Cyril Deguet <asmax@via.ecp.fr>
8 * Olivier Teulière <ipkiss@via.ecp.fr>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 #include "interpreter.hpp"
26 #include "expr_evaluator.hpp"
27 #include "../commands/cmd_audio.hpp"
28 #include "../commands/cmd_muxer.hpp"
29 #include "../commands/cmd_playlist.hpp"
30 #include "../commands/cmd_playtree.hpp"
31 #include "../commands/cmd_dialogs.hpp"
32 #include "../commands/cmd_dummy.hpp"
33 #include "../commands/cmd_layout.hpp"
34 #include "../commands/cmd_quit.hpp"
35 #include "../commands/cmd_minimize.hpp"
36 #include "../commands/cmd_input.hpp"
37 #include "../commands/cmd_fullscreen.hpp"
38 #include "../commands/cmd_on_top.hpp"
39 #include "../commands/cmd_show_window.hpp"
40 #include "../src/theme.hpp"
41 #include "../src/var_manager.hpp"
42 #include "../src/vlcproc.hpp"
45 Interpreter::Interpreter( intf_thread_t *pIntf ): SkinObject( pIntf )
47 /// Create the generic commands
48 #define REGISTER_CMD( name, cmd ) \
49 m_commandMap[name] = CmdGenericPtr( new cmd( getIntf() ) );
51 REGISTER_CMD( "none", CmdDummy )
52 REGISTER_CMD( "dialogs.changeSkin()", CmdDlgChangeSkin )
53 REGISTER_CMD( "dialogs.fileSimple()", CmdDlgFileSimple )
54 REGISTER_CMD( "dialogs.file()", CmdDlgFile )
55 REGISTER_CMD( "dialogs.directory()", CmdDlgDirectory )
56 REGISTER_CMD( "dialogs.disc()", CmdDlgDisc )
57 REGISTER_CMD( "dialogs.net()", CmdDlgNet )
58 REGISTER_CMD( "dialogs.messages()", CmdDlgMessages )
59 REGISTER_CMD( "dialogs.prefs()", CmdDlgPrefs )
60 REGISTER_CMD( "dialogs.fileInfo()", CmdDlgFileInfo )
61 REGISTER_CMD( "dialogs.streamingWizard()", CmdDlgStreamingWizard )
62 REGISTER_CMD( "dialogs.popup()", CmdDlgShowPopupMenu )
63 REGISTER_CMD( "playlist.load()", CmdDlgPlaylistLoad )
64 REGISTER_CMD( "playlist.save()", CmdDlgPlaylistSave )
65 REGISTER_CMD( "playlist.add()", CmdDlgAdd )
66 VarList &rVar = VlcProc::instance( getIntf() )->getPlaylistVar();
67 m_commandMap["playlist.del()"] =
68 CmdGenericPtr( new CmdPlaylistDel( getIntf(), rVar ) );
69 REGISTER_CMD( "playlist.next()", CmdPlaylistNext )
70 REGISTER_CMD( "playlist.previous()", CmdPlaylistPrevious )
71 REGISTER_CMD( "playlist.sort()", CmdPlaylistSort )
72 m_commandMap["playlist.setRandom(true)"] =
73 CmdGenericPtr( new CmdPlaylistRandom( getIntf(), true ) );
74 m_commandMap["playlist.setRandom(false)"] =
75 CmdGenericPtr( new CmdPlaylistRandom( getIntf(), false ) );
76 m_commandMap["playlist.setLoop(true)"] =
77 CmdGenericPtr( new CmdPlaylistLoop( getIntf(), true ) );
78 m_commandMap["playlist.setLoop(false)"] =
79 CmdGenericPtr( new CmdPlaylistLoop( getIntf(), false ) );
80 m_commandMap["playlist.setRepeat(true)"] =
81 CmdGenericPtr( new CmdPlaylistRepeat( getIntf(), true ) );
82 m_commandMap["playlist.setRepeat(false)"] =
83 CmdGenericPtr( new CmdPlaylistRepeat( getIntf(), false ) );
84 VarTree &rVarTree = VlcProc::instance( getIntf() )->getPlaytreeVar();
85 m_commandMap["playtree.del()"] =
86 CmdGenericPtr( new CmdPlaytreeDel( getIntf(), rVarTree ) );
87 REGISTER_CMD( "playtree.sort()", CmdPlaytreeSort )
88 REGISTER_CMD( "vlc.fullscreen()", CmdFullscreen )
89 REGISTER_CMD( "vlc.play()", CmdPlay )
90 REGISTER_CMD( "vlc.pause()", CmdPause )
91 REGISTER_CMD( "vlc.stop()", CmdStop )
92 REGISTER_CMD( "vlc.faster()", CmdFaster )
93 REGISTER_CMD( "vlc.slower()", CmdSlower )
94 REGISTER_CMD( "vlc.mute()", CmdMute )
95 REGISTER_CMD( "vlc.volumeUp()", CmdVolumeUp )
96 REGISTER_CMD( "vlc.volumeDown()", CmdVolumeDown )
97 REGISTER_CMD( "vlc.minimize()", CmdMinimize )
98 REGISTER_CMD( "vlc.onTop()", CmdOnTop )
99 REGISTER_CMD( "vlc.quit()", CmdQuit )
100 m_commandMap["equalizer.enable()"] =
101 CmdGenericPtr( new CmdSetEqualizer( getIntf(), true ) );
102 m_commandMap["equalizer.disable()"] =
103 CmdGenericPtr( new CmdSetEqualizer( getIntf(), false ) );
105 // Register the constant bool variables in the var manager
106 VarManager *pVarManager = VarManager::instance( getIntf() );
107 VarBool *pVarTrue = new VarBoolTrue( getIntf() );
108 pVarManager->registerVar( VariablePtr( pVarTrue ), "true" );
109 VarBool *pVarFalse = new VarBoolFalse( getIntf() );
110 pVarManager->registerVar( VariablePtr( pVarFalse ), "false" );
114 Interpreter *Interpreter::instance( intf_thread_t *pIntf )
116 if( ! pIntf->p_sys->p_interpreter )
118 Interpreter *pInterpreter;
119 pInterpreter = new Interpreter( pIntf );
122 pIntf->p_sys->p_interpreter = pInterpreter;
125 return pIntf->p_sys->p_interpreter;
129 void Interpreter::destroy( intf_thread_t *pIntf )
131 if( pIntf->p_sys->p_interpreter )
133 delete pIntf->p_sys->p_interpreter;
134 pIntf->p_sys->p_interpreter = NULL;
139 CmdGeneric *Interpreter::parseAction( const string &rAction, Theme *pTheme )
141 // Try to find the command in the global command map
142 if( m_commandMap.find( rAction ) != m_commandMap.end() )
144 return m_commandMap[rAction].get();
147 CmdGeneric *pCommand = NULL;
149 if( rAction.find( ";" ) != string::npos )
151 // Several actions are defined...
152 list<CmdGeneric *> actionList;
153 string rightPart = rAction;
154 string::size_type pos = rightPart.find( ";" );
155 while( pos != string::npos )
157 string leftPart = rightPart.substr( 0, pos );
158 // Remove any whitespace at the end of the left part, and parse it
160 leftPart.substr( 0, leftPart.find_last_not_of( " \t" ) + 1 );
161 actionList.push_back( parseAction( leftPart, pTheme ) );
162 // Now remove any whitespace at the beginning of the right part,
163 // and go on checking for further actions in it...
164 rightPart = rightPart.substr( pos, rightPart.size() );
166 rightPart.substr( rightPart.find_first_not_of( " \t;" ),
168 pos = rightPart.find( ";" );
170 actionList.push_back( parseAction( rightPart, pTheme ) );
172 // The list is filled, we remove NULL pointers from it, just in case...
173 actionList.remove( NULL );
175 pCommand = new CmdMuxer( getIntf(), actionList );
177 else if( rAction.find( ".setLayout(" ) != string::npos )
179 int leftPos = rAction.find( ".setLayout(" );
180 string windowId = rAction.substr( 0, leftPos );
181 // 11 is the size of ".setLayout("
182 int rightPos = rAction.find( ")", windowId.size() + 11 );
183 string layoutId = rAction.substr( windowId.size() + 11,
184 rightPos - (windowId.size() + 11) );
186 TopWindow *pWin = pTheme->getWindowById( windowId );
187 GenericLayout *pLayout = pTheme->getLayoutById( layoutId );
190 msg_Err( getIntf(), "Unknown window (%s)", windowId.c_str() );
194 msg_Err( getIntf(), "Unknown layout (%s)", layoutId.c_str() );
196 // Check that the layout doesn't correspond to another window
197 else if( pWin != pLayout->getWindow() )
199 msg_Err( getIntf(), "Layout %s is not associated to window %s",
200 layoutId.c_str(), windowId.c_str() );
204 pCommand = new CmdLayout( getIntf(), *pWin, *pLayout );
207 else if( rAction.find( ".show()" ) != string::npos )
209 int leftPos = rAction.find( ".show()" );
210 string windowId = rAction.substr( 0, leftPos );
211 TopWindow *pWin = pTheme->getWindowById( windowId );
214 pCommand = new CmdShowWindow( getIntf(), pTheme->getWindowManager(),
219 // It was maybe the id of a popup
220 Popup *pPopup = pTheme->getPopupById( windowId );
223 pCommand = new CmdShowPopup( getIntf(), *pPopup );
227 msg_Err( getIntf(), "Unknown window or popup (%s)",
232 else if( rAction.find( ".hide()" ) != string::npos )
234 int leftPos = rAction.find( ".hide()" );
235 string windowId = rAction.substr( 0, leftPos );
236 TopWindow *pWin = pTheme->getWindowById( windowId );
239 pCommand = new CmdHideWindow( getIntf(), pTheme->getWindowManager(),
244 msg_Err( getIntf(), "Unknown window (%s)", windowId.c_str() );
250 // Add the command in the pool
251 pTheme->m_commands.push_back( CmdGenericPtr( pCommand ) );
255 msg_Warn( getIntf(), "Unknown action: %s", rAction.c_str() );
262 VarBool *Interpreter::getVarBool( const string &rName, Theme *pTheme )
264 VarManager *pVarManager = VarManager::instance( getIntf() );
266 // Convert the expression into Reverse Polish Notation
267 ExprEvaluator evaluator( getIntf() );
268 evaluator.parse( rName );
270 list<VarBool*> varStack;
272 // Get the first token from the RPN stack
273 string token = evaluator.getToken();
274 while( !token.empty() )
278 // Get the 2 last variables on the stack
279 if( varStack.empty() )
281 msg_Err( getIntf(), "Invalid boolean expression: %s",
285 VarBool *pVar1 = varStack.back();
287 if( varStack.empty() )
289 msg_Err( getIntf(), "Invalid boolean expression: %s",
293 VarBool *pVar2 = varStack.back();
296 // Create a composite boolean variable
297 VarBool *pNewVar = new VarBoolAndBool( getIntf(), *pVar1, *pVar2 );
298 varStack.push_back( pNewVar );
299 // Register this variable in the manager
300 pVarManager->registerVar( VariablePtr( pNewVar ) );
302 else if( token == "or" )
304 // Get the 2 last variables on the stack
305 if( varStack.empty() )
307 msg_Err( getIntf(), "Invalid boolean expression: %s",
311 VarBool *pVar1 = varStack.back();
313 if( varStack.empty() )
315 msg_Err( getIntf(), "Invalid boolean expression: %s",
319 VarBool *pVar2 = varStack.back();
322 // Create a composite boolean variable
323 VarBool *pNewVar = new VarBoolOrBool( getIntf(), *pVar1, *pVar2 );
324 varStack.push_back( pNewVar );
325 // Register this variable in the manager
326 pVarManager->registerVar( VariablePtr( pNewVar ) );
328 else if( token == "not" )
330 // Get the last variable on the stack
331 if( varStack.empty() )
333 msg_Err( getIntf(), "Invalid boolean expression: %s",
337 VarBool *pVar = varStack.back();
340 // Create a composite boolean variable
341 VarBool *pNewVar = new VarNotBool( getIntf(), *pVar );
342 varStack.push_back( pNewVar );
343 // Register this variable in the manager
344 pVarManager->registerVar( VariablePtr( pNewVar ) );
346 else if( token.find( ".isVisible" ) != string::npos )
348 int leftPos = token.find( ".isVisible" );
349 string windowId = token.substr( 0, leftPos );
350 TopWindow *pWin = pTheme->getWindowById( windowId );
353 // Push the visibility variable on the stack
354 varStack.push_back( &pWin->getVisibleVar() );
358 msg_Err( getIntf(), "Unknown window (%s)", windowId.c_str() );
364 // Try to get the variable from the variable manager
365 VarBool *pVar = (VarBool*)pVarManager->getVar( token, "bool" );
368 msg_Err( getIntf(), "Cannot resolve boolean variable: %s",
372 varStack.push_back( pVar );
374 // Get the first token from the RPN stack
375 token = evaluator.getToken();
378 // The stack should contain a single variable
379 if( varStack.size() != 1 )
381 msg_Err( getIntf(), "Invalid boolean expression: %s", rName.c_str() );
384 return varStack.back();
388 VarPercent *Interpreter::getVarPercent( const string &rName, Theme *pTheme )
390 // Try to get the variable from the variable manager
391 VarManager *pVarManager = VarManager::instance( getIntf() );
392 VarPercent *pVar = (VarPercent*)pVarManager->getVar( rName, "percent" );
397 VarList *Interpreter::getVarList( const string &rName, Theme *pTheme )
399 // Try to get the variable from the variable manager
400 VarManager *pVarManager = VarManager::instance( getIntf() );
401 VarList *pVar = (VarList*)pVarManager->getVar( rName, "list" );
405 VarTree *Interpreter::getVarTree( const string &rName, Theme *pTheme )
407 // Try to get the variable from the variable manager
408 VarManager *pVarManager = VarManager::instance( getIntf() );
409 VarTree *pVar = (VarTree*)pVarManager->getVar( rName, "tree" );