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Diffstat (limited to '')
| -rw-r--r-- | ServiceBasedPlugins/src/pluginsupport/UPluginLoader_DLL.pas | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/ServiceBasedPlugins/src/pluginsupport/UPluginLoader_DLL.pas b/ServiceBasedPlugins/src/pluginsupport/UPluginLoader_DLL.pas new file mode 100644 index 00000000..b143cd2a --- /dev/null +++ b/ServiceBasedPlugins/src/pluginsupport/UPluginLoader_DLL.pas @@ -0,0 +1,181 @@ +{* UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ * $URL: https://ultrastardx.svn.sourceforge.net/svnroot/ultrastardx/trunk/src/base/UMain.pas $
+ * $Id: UMain.pas 1629 2009-03-07 22:30:04Z k-m_schindler $
+ *}
+
+unit UPluginLoader_DLL;
+
+interface
+
+{$IFDEF FPC}
+ {$MODE Delphi}
+{$ENDIF}
+
+{$I switches.inc}
+
+uses UPluginDefines, UPlugin;
+
+type
+ TPluginLoader_DLL = class
+ protected
+ PluginDir: WideString;
+ public
+ constructor Create(PluginDir: WideString);
+ procedure Browse(Dir: WideString);
+ end;
+
+ TPlugin_DLL = class (TPlugin)
+ protected
+ hLib: THandle; //< handle of loaded library
+ Lib_Proc_Init: TUS_Plugin_Proc_Init;
+ Lib_OnChangeStatus: TUS_Plugin_OnChangeStatus;
+
+ procedure OnChangeStatus(Status: TUS_PluginStatus); override;
+ public
+ constructor Create(Handle: TUS_Handle; Filename: WideString); override;
+ destructor Destroy; override;
+ end;
+
+const
+ {$IF Defined(MSWINDOWS)}
+ DLLExt = '.dll';
+ {$ELSEIF Defined(DARWIN)}
+ DLLExt = '.dylib';
+ {$ELSEIF Defined(UNIX)}
+ DLLExt = '.so';
+ {$IFEND}
+
+implementation
+uses
+ {$IFDEF MSWINDOWS}
+ windows,
+ {$ELSE}
+ dynlibs,
+ {$ENDIF}
+ SysUtils, Dialogs,
+ UPluginManager,
+ UPlatform;
+
+{ implementation of TPluginLoader_DLL }
+constructor TPluginLoader_DLL.Create(PluginDir: WideString);
+begin
+ Self.PluginDir := PluginDir;
+ Browse(PluginDir);
+end;
+
+procedure TPluginLoader_DLL.Browse(Dir: WideString);
+ var
+ Files: TDirectoryEntryArray;
+ I: Integer;
+begin
+ Showmessage(Dir + ' - ' + DLLExt);
+ Files := Platform.DirectoryFindFiles(Dir, DLLExt, True);
+
+ for I := 0 to High(Files) do
+ begin
+ ShowMessage(Dir + Files[I].Name);
+ if (Files[I].IsDirectory) then
+ Browse(Dir + Files[I].Name + PathDelim)
+ else if (Files[I].IsFile) then
+ PluginManager.AddPlugin(TPlugin_DLL.Create(PluginManager.GetHandle, Dir + Files[I].Name));
+ end;
+end;
+
+{ implementation of TPlugin_DLL }
+constructor TPlugin_DLL.Create(Handle: TUS_Handle; Filename: WideString);
+begin
+ inherited;
+
+ hLib := 0;
+ Lib_Proc_Init := nil;
+ Lib_OnChangeStatus := nil;
+
+ //try to load the library
+ SetStatus(psWaitingInit);
+end;
+
+destructor TPlugin_DLL.Destroy;
+begin
+
+ inherited;
+end;
+
+procedure TPlugin_DLL.OnChangeStatus(Status: TUS_PluginStatus);
+begin
+ Case Status of
+ psWaitingInit: begin
+ //we have to try to load the plugin here
+ hLib := LoadLibrary(PChar(AnsiString(Filename)));
+ if (hlib <> 0) then
+ begin
+ @Lib_Proc_Init := GetProcAddress(hLib, PChar('Proc_Init'));
+
+ If (not Assigned(Lib_Proc_Init)) then
+ begin
+ FreeLibrary(hLib);
+
+ {$IFDEF MSWINDOWS}
+ SetError('Can''t export Proc_Init procedure from library. Windows reports: ' + SysErrorMessage(GetLastError));
+ {$ELSE}
+ SetError('Can''t export Proc_Init procedure from library.');
+ {$ENDIF}
+ Exit;
+ end;
+
+ @Lib_OnChangeStatus := GetProcAddress(hLib, PChar('OnChangeStatus'));
+
+ If (not Assigned(Lib_OnChangeStatus)) then
+ begin
+ FreeLibrary(hLib);
+
+ {$IFDEF MSWINDOWS}
+ SetError('Can''t export OnChangeStatus procedure from library. Windows reports: ' + SysErrorMessage(GetLastError));
+ {$ELSE}
+ SetError('Can''t export OnChangeStatus procedure from library.');
+ {$ENDIF}
+ Exit;
+ end;
+
+ end
+ else
+ begin
+ {$IFDEF MSWINDOWS}
+ SetError('Error loading library. Windows reports: ' + SysErrorMessage(GetLastError));
+ {$ELSE}
+ SetError('Error loading library.');
+ {$ENDIF}
+ Exit;
+ end;
+
+ end;
+
+ end;
+
+ //call plugins OnChangeStatus procedure
+ If assigned(Lib_OnChangeStatus) then
+ Lib_OnChangeStatus(Self.Handle, Status);
+
+ Self.Status := Status;
+end;
+
+end.
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