diff options
Diffstat (limited to '')
-rw-r--r-- | Game/Code/Classes/uPluginLoader.pas | 1602 |
1 files changed, 801 insertions, 801 deletions
diff --git a/Game/Code/Classes/uPluginLoader.pas b/Game/Code/Classes/uPluginLoader.pas index 0fe5d51a..87951fed 100644 --- a/Game/Code/Classes/uPluginLoader.pas +++ b/Game/Code/Classes/uPluginLoader.pas @@ -1,801 +1,801 @@ -unit UPluginLoader; -{********************* - UPluginLoader - Unit contains to Classes - TPluginLoader: Class Searching for and Loading the Plugins - TtehPlugins: Class that represents the Plugins in Modules chain -*********************} - -interface - -{$IFDEF FPC} - {$MODE Delphi} -{$ENDIF} - -{$I switches.inc} - -uses UPluginDefs, UCoreModule; - -type - TPluginListItem = record - Info: TUS_PluginInfo; - State: Byte; //State of this Plugin: 0 - undefined; 1 - Loaded; 2 - Inited / Running; 4 - Unloaded; 254 - Loading aborted by Plugin; 255 - Unloaded because of Error - Path: String; //Path to this Plugin - NeedsDeInit: Boolean; //If this is Inited correctly this should be true - hLib: THandle; //Handle of Loaded Libary - Procs: record //Procs offered by Plugin. Don't call this directly use wrappers of TPluginLoader - Load: Func_Load; - Init: Func_Init; - DeInit: Proc_DeInit; - end; - end; - {********************* - TPluginLoader - Class Searches for Plugins and Manages loading and unloading - *********************} - PPluginLoader = ^TPluginLoader; - TPluginLoader = class (TCoreModule) - private - LoadingProcessFinished: Boolean; - sUnloadPlugin: THandle; - sLoadPlugin: THandle; - sGetPluginInfo: THandle; - sGetPluginState: THandle; - - Procedure FreePlugin(Index: Cardinal); - public - PluginInterface: TUS_PluginInterface; - Plugins: Array of TPluginListItem; - - //TCoreModule methods to inherit - Constructor Create; override; - Procedure Info(const pInfo: PModuleInfo); override; - Function Load: Boolean; override; - Function Init: Boolean; override; - Procedure DeInit; override; - Procedure Free; override; - - //New Methods - Procedure BrowseDir(Path: String); //Browses the Path at _Path_ for Plugins - Function PluginExists(Name: String): Integer; //If Plugin Exists: Index of Plugin, else -1 - Procedure AddPlugin(Filename: String);//Adds Plugin to the Array - - Function CallLoad(Index: Cardinal): Integer; - Function CallInit(Index: Cardinal): Integer; - Procedure CallDeInit(Index: Cardinal); - - //Services offered - Function LoadPlugin(wParam, lParam: DWord): integer; //wParam PChar(PluginName/PluginPath) | lParam (if wParam = nil) ID of the Plugin - Function UnloadPlugin(wParam, lParam: DWord): integer; //wParam PChar(PluginName/PluginPath) | lParam (if wParam = nil) ID of the Plugin - Function GetPluginInfo(wParam, lParam: DWord): integer; //If wParam = -1 then (If lParam = nil then get length of Moduleinfo Array. If lparam <> nil then write array of TUS_PluginInfo to address at lparam) Else (Get PluginInfo of Plugin with Index(wParam) to Address at lParam) - Function GetPluginState(wParam, lParam: DWord): integer; //If wParam = -1 then (If lParam = nil then get length of Moduleinfo Array. If lparam <> nil then write array of TUS_PluginInfo to address at lparam) Else (Return PluginInfo of Plugin with Index(wParam)) - - end; - - {********************* - TtehPlugins - Class Represents the Plugins in Module Chain. - It Calls the Plugins Procs and Funcs - *********************} - TtehPlugins = class (TCoreModule) - private - PluginLoader: PPluginLoader; - public - //TCoreModule methods to inherit - Constructor Create; override; - - Procedure Info(const pInfo: PModuleInfo); override; - Function Load: Boolean; override; - Function Init: Boolean; override; - Procedure DeInit; override; - end; - -const - {$IFDEF MSWINDOWS} - PluginFileExtension = '.dll'; - {$ENDIF} - {$IFDEF LINUX} - PluginFileExtension = '.so'; - {$ENDIF} - {$IFDEF DARWIN} - PluginFileExtension = '.dylib'; - {$ENDIF} - -implementation -uses UCore, UPluginInterface, -{$IFDEF MSWINDOWS} - windows, -{$ELSE} - dynlibs, -{$ENDIF} -UMain, SysUtils; - -{********************* - TPluginLoader - Implentation -*********************} - -//------------- -// Function that gives some Infos about the Module to the Core -//------------- -Procedure TPluginLoader.Info(const pInfo: PModuleInfo); -begin - pInfo^.Name := 'TPluginLoader'; - pInfo^.Version := MakeVersion(1,0,0,chr(0)); - pInfo^.Description := 'Searches for Plugins, loads and unloads them'; -end; - -//------------- -// Just the Constructor -//------------- -Constructor TPluginLoader.Create; -begin - //Init PluginInterface - //Using Methods from UPluginInterface - PluginInterface.CreateHookableEvent := CreateHookableEvent; - PluginInterface.DestroyHookableEvent := DestroyHookableEvent; - PluginInterface.NotivyEventHooks := NotivyEventHooks; - PluginInterface.HookEvent := HookEvent; - PluginInterface.UnHookEvent := UnHookEvent; - PluginInterface.EventExists := EventExists; - - PluginInterface.CreateService := CreateService; - PluginInterface.DestroyService := DestroyService; - PluginInterface.CallService := CallService; - PluginInterface.ServiceExists := ServiceExists; - - //UnSet Private Var - LoadingProcessFinished := False; -end; - -//------------- -//Is Called on Loading. -//In this Method only Events and Services should be created -//to offer them to other Modules or Plugins during the Init process -//If False is Returned this will cause a Forced Exit -//------------- -Function TPluginLoader.Load: Boolean; -begin - Result := True; - - Try - //Start Searching for Plugins - BrowseDir(PluginPath); - Except - Result := False; - Core.ReportError(Integer(PChar('Error Browsing and Loading.')), Integer(PChar('TPluginLoader'))); - end; -end; - -//------------- -//Is Called on Init Process -//In this Method you can Hook some Events and Create + Init -//your Classes, Variables etc. -//If False is Returned this will cause a Forced Exit -//------------- -Function TPluginLoader.Init: Boolean; -begin - //Just set Prvate Var to true. - LoadingProcessFinished := True; - Result := True; -end; - -//------------- -//Is Called if this Module has been Inited and there is a Exit. -//Deinit is in backwards Initing Order -//------------- -Procedure TPluginLoader.DeInit; -var - I: Integer; -begin - //Force DeInit - //If some Plugins aren't DeInited for some Reason o0 - For I := 0 to High(Plugins) do - begin - If (Plugins[I].State < 4) then - FreePlugin(I); - end; - - //Nothing to do here. Core will remove the Hooks -end; - -//------------- -//Is Called if this Module will be unloaded and has been created -//Should be used to Free Memory -//------------- -Procedure TPluginLoader.Free; -begin - //Just save some Memory if it wasn't done now.. - SetLength(Plugins, 0); -end; - -//-------------- -// Browses the Path at _Path_ for Plugins -//-------------- -Procedure TPluginLoader.BrowseDir(Path: String); -var - SR: TSearchRec; -begin - //Search for other Dirs to Browse - if FindFirst(Path + '*', faDirectory, SR) = 0 then begin - repeat - if (SR.Name <> '.') and (SR.Name <> '..') then - BrowseDir(Path + Sr.Name + PathDelim); - until FindNext(SR) <> 0; - end; - FindClose(SR); - - //Search for Plugins at Path - if FindFirst(Path + '*' + PluginFileExtension, 0, SR) = 0 then - begin - repeat - AddPlugin(Path + SR.Name); - until FindNext(SR) <> 0; - end; - FindClose(SR); -end; - -//-------------- -// If Plugin Exists: Index of Plugin, else -1 -//-------------- -Function TPluginLoader.PluginExists(Name: String): Integer; -var - I: Integer; -begin - Result := -1; - - If (Length(Name) <= 32 { =>Length(TUS_PluginInfo.Name)}) then - begin - For I := 0 to High(Plugins) do - if (Plugins[I].Info.Name = Name) then - begin //Found the Plugin - Result := I; - Break; - end; - end; -end; - -//-------------- -// Adds Plugin to the Array -//-------------- -Procedure TPluginLoader.AddPlugin(Filename: String); -var - hLib: THandle; - PInfo: Proc_PluginInfo; - Info: TUS_PluginInfo; - PluginID: Integer; -begin - If (FileExists(Filename)) then - begin //Load Libary - hLib := LoadLibrary(PChar(Filename)); - If (hLib <> 0) then - begin //Try to get Address of the Info Proc - PInfo := GetProcAddress (hLib, PChar('USPlugin_Info')); - If (@PInfo <> nil) then - begin - Info.cbSize := SizeOf(TUS_PluginInfo); - - Try //Call Info Proc - PInfo(@Info); - Except - Info.Name := ''; - Core.ReportError(Integer(PChar('Error getting Plugin Info: ' + Filename)), Integer(PChar('TPluginLoader'))); - end; - - //Is Name set ? - If (Trim(Info.Name) <> '') then - begin - PluginID := PluginExists(Info.Name); - - If (PluginID > 0) AND (Plugins[PluginID].State >=4) then - PluginID := -1; - - If (PluginID = -1) then - begin - //Add new item to array - PluginID := Length(Plugins); - SetLength(Plugins, PluginID + 1); - - //Fill with Info: - Plugins[PluginID].Info := Info; - Plugins[PluginID].State := 0; - Plugins[PluginID].Path := Filename; - Plugins[PluginID].NeedsDeInit := False; - Plugins[PluginID].hLib := hLib; - - //Try to get Procs - Plugins[PluginID].Procs.Load := GetProcAddress (hLib, PChar('USPlugin_Load')); - Plugins[PluginID].Procs.Init := GetProcAddress (hLib, PChar('USPlugin_Init')); - Plugins[PluginID].Procs.DeInit := GetProcAddress (hLib, PChar('USPlugin_DeInit')); - - If (@Plugins[PluginID].Procs.Load = nil) OR (@Plugins[PluginID].Procs.Init = nil) OR (@Plugins[PluginID].Procs.DeInit = nil) then - begin - Plugins[PluginID].State := 255; - FreeLibrary(hLib); - Core.ReportError(Integer(PChar('Can''t get Plugin Procs from Libary: "' + Info.Name + '" ' + Filename)), Integer(PChar('TPluginLoader'))); - end; - - //Emulate loading process if this Plugin is loaded to late - If (LoadingProcessFinished) then - begin - CallLoad(PluginID); - CallInit(PluginID); - end; - end - Else If (LoadingProcessFinished = False) then - begin - If (Plugins[PluginID].Info.Version < Info.Version) then - begin //Found newer Version of this Plugin - Core.ReportDebug(Integer(PChar('Found a newer Version of Plugin: ' + String(Info.Name))), Integer(PChar('TPluginLoader'))); - - //Unload Old Plugin - UnloadPlugin(Integer(nil), PluginID); - - //Fill with new Info - Plugins[PluginID].Info := Info; - Plugins[PluginID].State := 0; - Plugins[PluginID].Path := Filename; - Plugins[PluginID].NeedsDeInit := False; - Plugins[PluginID].hLib := hLib; - - //Try to get Procs - Plugins[PluginID].Procs.Load := GetProcAddress (hLib, PChar('USPlugin_Load')); - Plugins[PluginID].Procs.Init := GetProcAddress (hLib, PChar('USPlugin_Init')); - Plugins[PluginID].Procs.DeInit := GetProcAddress (hLib, PChar('USPlugin_DeInit')); - - If (@Plugins[PluginID].Procs.Load = nil) OR (@Plugins[PluginID].Procs.Init = nil) OR (@Plugins[PluginID].Procs.DeInit = nil) then - begin - FreeLibrary(hLib); - Plugins[PluginID].State := 255; - Core.ReportError(Integer(PChar('Can''t get Plugin Procs from Libary: "' + Info.Name + '" ' + Filename)), Integer(PChar('TPluginLoader'))); - end; - end - else - begin //Newer Version already loaded - FreeLibrary(hLib); - end; - end - else - begin - FreeLibrary(hLib); - Core.ReportError(Integer(PChar('Plugin with this Name already exists: ' + String(Info.Name))), Integer(PChar('TPluginLoader'))); - end; - end - else - begin - FreeLibrary(hLib); - Core.ReportError(Integer(PChar('No name reported: ' + Filename)), Integer(PChar('TPluginLoader'))); - end; - end - else - begin - FreeLibrary(hLib); - Core.ReportError(Integer(PChar('Can''t find Info Procedure: ' + Filename)), Integer(PChar('TPluginLoader'))); - end; - end - else - Core.ReportError(Integer(PChar('Can''t load Plugin Libary: ' + Filename)), Integer(PChar('TPluginLoader'))); - end; -end; - -//-------------- -// Calls Load Func of Plugin with the given Index -//-------------- -Function TPluginLoader.CallLoad(Index: Cardinal): Integer; -begin - Result := -2; - If(Index < Length(Plugins)) then - begin - If (@Plugins[Index].Procs.Load <> nil) AND (Plugins[Index].State = 0) then - begin - Try - Result := Plugins[Index].Procs.Load(@PluginInterface); - Except - Result := -3; - End; - - If (Result = 0) then - Plugins[Index].State := 1 - Else - begin - FreePlugin(Index); - Plugins[Index].State := 255; - Core.ReportError(Integer(PChar('Error calling Load Function from Plugin: ' + String(Plugins[Index].Info.Name))), Integer(PChar('TPluginLoader'))); - end; - end; - end; -end; - -//-------------- -// Calls Init Func of Plugin with the given Index -//-------------- -Function TPluginLoader.CallInit(Index: Cardinal): Integer; -begin - Result := -2; - If(Index < Length(Plugins)) then - begin - If (@Plugins[Index].Procs.Init <> nil) AND (Plugins[Index].State = 1) then - begin - Try - Result := Plugins[Index].Procs.Init(@PluginInterface); - Except - Result := -3; - End; - - If (Result = 0) then - begin - Plugins[Index].State := 2; - Plugins[Index].NeedsDeInit := True; - end - Else - begin - FreePlugin(Index); - Plugins[Index].State := 255; - Core.ReportError(Integer(PChar('Error calling Init Function from Plugin: ' + String(Plugins[Index].Info.Name))), Integer(PChar('TPluginLoader'))); - end; - end; - end; -end; - -//-------------- -// Calls DeInit Proc of Plugin with the given Index -//-------------- -Procedure TPluginLoader.CallDeInit(Index: Cardinal); -begin - If(Index < Length(Plugins)) then - begin - If (Plugins[Index].State < 4) then - begin - If (@Plugins[Index].Procs.DeInit <> nil) and (Plugins[Index].NeedsDeInit) then - Try - Plugins[Index].Procs.DeInit(@PluginInterface); - Except - - End; - - //Don't forget to remove Services and Subscriptions by this Plugin - Core.Hooks.DelbyOwner(-1 - Index); - - FreePlugin(Index); - end; - end; -end; - -//-------------- -// Frees all Plugin Sources (Procs and Handles) - Helper for Deiniting Functions -//-------------- -Procedure TPluginLoader.FreePlugin(Index: Cardinal); -begin - Plugins[Index].State := 4; - Plugins[Index].Procs.Load := nil; - Plugins[Index].Procs.Init := nil; - Plugins[Index].Procs.DeInit := nil; - - If (Plugins[Index].hLib <> 0) then - FreeLibrary(Plugins[Index].hLib); -end; - - - -//-------------- -// wParam PChar(PluginName/PluginPath) | lParam (if wParam = nil) ID of the Plugin -//-------------- -Function TPluginLoader.LoadPlugin(wParam, lParam: DWord): integer; -var - Index: Integer; - sFile: String; -begin - Result := -1; - sFile := ''; - //lParam is ID - If (Pointer(wParam) = nil) then - begin - Index := lParam; - end - else - begin //wParam is PChar - try - sFile := String(PChar(Pointer(wParam))); - Index := PluginExists(sFile); - If (Index < 0) And FileExists(sFile) then - begin //Is Filename - AddPlugin(sFile); - Result := Plugins[High(Plugins)].State; - end; - except - Index := -2; - end; - end; - - - If (Index >= 0) and (Index < Length(Plugins)) then - begin - AddPlugin(Plugins[Index].Path); - Result := Plugins[Index].State; - end; -end; - -//-------------- -// wParam PChar(PluginName/PluginPath) | lParam (if wParam = nil) ID of the Plugin -//-------------- -Function TPluginLoader.UnloadPlugin(wParam, lParam: DWord): integer; -var - Index: Integer; - sName: String; -begin - Result := -1; - //lParam is ID - If (Pointer(wParam) = nil) then - begin - Index := lParam; - end - else - begin //wParam is PChar - try - sName := String(PChar(Pointer(wParam))); - Index := PluginExists(sName); - except - Index := -2; - end; - end; - - - If (Index >= 0) and (Index < Length(Plugins)) then - CallDeInit(Index) -end; - -//-------------- -// If wParam = -1 then (If lParam = nil then get length of Moduleinfo Array. If lparam <> nil then write array of TUS_PluginInfo to address at lparam) Else (Get PluginInfo of Plugin with Index(wParam) to Address at lParam) -//-------------- -Function TPluginLoader.GetPluginInfo(wParam, lParam: DWord): integer; -var I: Integer; -begin - Result := 0; - If (wParam < 0) then - begin //Get Info of 1 Plugin - If (Pointer(lParam) <> nil) AND (wParam < Length(Plugins)) then - begin - Try - Result := 1; - PUS_PluginInfo(Pointer(lParam))^ := Plugins[wParam].Info; - Except - - End; - end; - end - Else If (Pointer(lParam) = nil) then - begin //Get Length of Plugin (Info) Array - Result := Length(Plugins); - end - Else //Write PluginInfo Array to Address in lParam - begin - Try - For I := 0 to high(Plugins) do - PAUS_PluginInfo(Pointer(lParam))^[I] := Plugins[I].Info; - Result := Length(Plugins); - Except - Core.ReportError(Integer(PChar('Could not write PluginInfo Array')), Integer(PChar('TPluginLoader'))); - End; - end; - -end; - -//-------------- -// If wParam = -1 then (If lParam = nil then get length of Plugin State Array. If lparam <> nil then write array of Byte to address at lparam) Else (Return State of Plugin with Index(wParam)) -//-------------- -Function TPluginLoader.GetPluginState(wParam, lParam: DWord): integer; -var I: Integer; -begin - Result := -1; - If (wParam < 0) then - begin //Get State of 1 Plugin - If (wParam < Length(Plugins)) then - begin - Result := Plugins[wParam].State; - end; - end - Else If (Pointer(lParam) = nil) then - begin //Get Length of Plugin (Info) Array - Result := Length(Plugins); - end - Else //Write PluginInfo Array to Address in lParam - begin - Try - For I := 0 to high(Plugins) do - Byte(Pointer(lParam + I)^) := Plugins[I].State; - Result := Length(Plugins); - Except - Core.ReportError(Integer(PChar('Could not write PluginState Array')), Integer(PChar('TPluginLoader'))); - End; - end; -end; - - - - - -{********************* - TtehPlugins - Implentation -*********************} - -//------------- -// Function that gives some Infos about the Module to the Core -//------------- -Procedure TtehPlugins.Info(const pInfo: PModuleInfo); -begin - pInfo^.Name := 'TtehPlugins'; - pInfo^.Version := MakeVersion(1,0,0,chr(0)); - pInfo^.Description := 'Module executing the Plugins!'; -end; - -//------------- -// Just the Constructor -//------------- -Constructor TtehPlugins.Create; -begin - PluginLoader := nil; -end; - -//------------- -//Is Called on Loading. -//In this Method only Events and Services should be created -//to offer them to other Modules or Plugins during the Init process -//If False is Returned this will cause a Forced Exit -//------------- -Function TtehPlugins.Load: Boolean; -var - I: Integer; //Counter - CurExecutedBackup: Integer; //backup of Core.CurExecuted Attribute -label Continue; -begin - //Get Pointer to PluginLoader - PluginLoader := PPluginLoader(Core.GetModulebyName('TPluginLoader')); - If (PluginLoader = nil) then - begin - Result := False; - Core.ReportError(Integer(PChar('Could not get Pointer to PluginLoader')), Integer(PChar('TtehPlugins'))); - end - else - begin - Result := True; - - //Backup CurExecuted - CurExecutedBackup := Core.CurExecuted; - - //Start Loading the Plugins - I := 0; - Continue: - Try - While (I <= High(PluginLoader.Plugins)) do - begin - Core.CurExecuted := -1 - I; - - //Unload Plugin if not correctly Executed - If (PluginLoader.CallLoad(I) <> 0) then - begin - PluginLoader.CallDeInit(I); - PluginLoader.Plugins[I].State := 254; //Plugin asks for unload - Core.ReportDebug(Integer(PChar('Plugin Selfabort during loading process: ' + String(PluginLoader.Plugins[I].Info.Name))), Integer(PChar('TtehPlugins'))); - end - else - Core.ReportDebug(Integer(PChar('Plugin loaded succesful: ' + String(PluginLoader.Plugins[I].Info.Name))), Integer(PChar('TtehPlugins'))); - - Inc(I); - end; - Except - //Plugin could not be loaded. - // => Show Error Message, then ShutDown Plugin - on E: Exception do - begin - PluginLoader.CallDeInit(I); - PluginLoader.Plugins[I].State := 255; //Plugin causes Error - Core.ReportError(Integer(PChar('Plugin causes Error during loading process: ' + PluginLoader.Plugins[I].Info.Name + ', ErrorMsg: "' + E.Message + '"')), Integer(PChar('TtehPlugins'))); - - - //don't forget to increase I - Inc(I); - end; - End; - - If (I <= High(PluginLoader.Plugins)) then - Goto Continue; - - //Reset CurExecuted - Core.CurExecuted := CurExecutedBackup; - end; -end; - -//------------- -//Is Called on Init Process -//In this Method you can Hook some Events and Create + Init -//your Classes, Variables etc. -//If False is Returned this will cause a Forced Exit -//------------- -Function TtehPlugins.Init: Boolean; -var - I: Integer; //Counter - CurExecutedBackup: Integer; //backup of Core.CurExecuted Attribute -label Continue; -begin - Result := True; - - //Backup CurExecuted - CurExecutedBackup := Core.CurExecuted; - - //Start Loading the Plugins - I := 0; - Continue: - Try - While (I <= High(PluginLoader.Plugins)) do - begin - Core.CurExecuted := -1 - I; - - //Unload Plugin if not correctly Executed - If (PluginLoader.CallInit(I) <> 0) then - begin - PluginLoader.CallDeInit(I); - PluginLoader.Plugins[I].State := 254; //Plugin asks for unload - Core.ReportDebug(Integer(PChar('Plugin Selfabort during init process: ' + String(PluginLoader.Plugins[I].Info.Name))), Integer(PChar('TtehPlugins'))); - end - else - Core.ReportDebug(Integer(PChar('Plugin inited succesful: ' + String(PluginLoader.Plugins[I].Info.Name))), Integer(PChar('TtehPlugins'))); - - //don't forget to increase I - Inc(I); - end; - Except - //Plugin could not be loaded. - // => Show Error Message, then ShutDown Plugin - PluginLoader.CallDeInit(I); - PluginLoader.Plugins[I].State := 255; //Plugin causes Error - Core.ReportError(Integer(PChar('Plugin causes Error during init process: ' + String(PluginLoader.Plugins[I].Info.Name))), Integer(PChar('TtehPlugins'))); - - //don't forget to increase I - Inc(I); - End; - - If (I <= High(PluginLoader.Plugins)) then - GoTo Continue; - - //Reset CurExecuted - Core.CurExecuted := CurExecutedBackup; -end; - -//------------- -//Is Called if this Module has been Inited and there is a Exit. -//Deinit is in backwards Initing Order -//------------- -Procedure TtehPlugins.DeInit; -var - I: Integer; //Counter - CurExecutedBackup: Integer; //backup of Core.CurExecuted Attribute -label Continue; -begin - //Backup CurExecuted - CurExecutedBackup := Core.CurExecuted; - - //Start Loop - I := 0; - - Continue: - Try - While (I <= High(PluginLoader.Plugins)) do - begin - //DeInit Plugin - PluginLoader.CallDeInit(I); - - Inc(I); - end; - Except - Inc(I); - End; - - If I <= High(PluginLoader.Plugins) then - Goto Continue; - - //Reset CurExecuted - Core.CurExecuted := CurExecutedBackup; -end; - -end. +unit UPluginLoader;
+{*********************
+ UPluginLoader
+ Unit contains to Classes
+ TPluginLoader: Class Searching for and Loading the Plugins
+ TtehPlugins: Class that represents the Plugins in Modules chain
+*********************}
+
+interface
+
+{$IFDEF FPC}
+ {$MODE Delphi}
+{$ENDIF}
+
+{$I switches.inc}
+
+uses UPluginDefs, UCoreModule;
+
+type
+ TPluginListItem = record
+ Info: TUS_PluginInfo;
+ State: Byte; //State of this Plugin: 0 - undefined; 1 - Loaded; 2 - Inited / Running; 4 - Unloaded; 254 - Loading aborted by Plugin; 255 - Unloaded because of Error
+ Path: String; //Path to this Plugin
+ NeedsDeInit: Boolean; //If this is Inited correctly this should be true
+ hLib: THandle; //Handle of Loaded Libary
+ Procs: record //Procs offered by Plugin. Don't call this directly use wrappers of TPluginLoader
+ Load: Func_Load;
+ Init: Func_Init;
+ DeInit: Proc_DeInit;
+ end;
+ end;
+ {*********************
+ TPluginLoader
+ Class Searches for Plugins and Manages loading and unloading
+ *********************}
+ PPluginLoader = ^TPluginLoader;
+ TPluginLoader = class (TCoreModule)
+ private
+ LoadingProcessFinished: Boolean;
+ sUnloadPlugin: THandle;
+ sLoadPlugin: THandle;
+ sGetPluginInfo: THandle;
+ sGetPluginState: THandle;
+
+ Procedure FreePlugin(Index: Cardinal);
+ public
+ PluginInterface: TUS_PluginInterface;
+ Plugins: Array of TPluginListItem;
+
+ //TCoreModule methods to inherit
+ Constructor Create; override;
+ Procedure Info(const pInfo: PModuleInfo); override;
+ Function Load: Boolean; override;
+ Function Init: Boolean; override;
+ Procedure DeInit; override;
+ Procedure Free; override;
+
+ //New Methods
+ Procedure BrowseDir(Path: String); //Browses the Path at _Path_ for Plugins
+ Function PluginExists(Name: String): Integer; //If Plugin Exists: Index of Plugin, else -1
+ Procedure AddPlugin(Filename: String);//Adds Plugin to the Array
+
+ Function CallLoad(Index: Cardinal): Integer;
+ Function CallInit(Index: Cardinal): Integer;
+ Procedure CallDeInit(Index: Cardinal);
+
+ //Services offered
+ Function LoadPlugin(wParam, lParam: DWord): integer; //wParam PChar(PluginName/PluginPath) | lParam (if wParam = nil) ID of the Plugin
+ Function UnloadPlugin(wParam, lParam: DWord): integer; //wParam PChar(PluginName/PluginPath) | lParam (if wParam = nil) ID of the Plugin
+ Function GetPluginInfo(wParam, lParam: DWord): integer; //If wParam = -1 then (If lParam = nil then get length of Moduleinfo Array. If lparam <> nil then write array of TUS_PluginInfo to address at lparam) Else (Get PluginInfo of Plugin with Index(wParam) to Address at lParam)
+ Function GetPluginState(wParam, lParam: DWord): integer; //If wParam = -1 then (If lParam = nil then get length of Moduleinfo Array. If lparam <> nil then write array of TUS_PluginInfo to address at lparam) Else (Return PluginInfo of Plugin with Index(wParam))
+
+ end;
+
+ {*********************
+ TtehPlugins
+ Class Represents the Plugins in Module Chain.
+ It Calls the Plugins Procs and Funcs
+ *********************}
+ TtehPlugins = class (TCoreModule)
+ private
+ PluginLoader: PPluginLoader;
+ public
+ //TCoreModule methods to inherit
+ Constructor Create; override;
+
+ Procedure Info(const pInfo: PModuleInfo); override;
+ Function Load: Boolean; override;
+ Function Init: Boolean; override;
+ Procedure DeInit; override;
+ end;
+
+const
+ {$IFDEF MSWINDOWS}
+ PluginFileExtension = '.dll';
+ {$ENDIF}
+ {$IFDEF LINUX}
+ PluginFileExtension = '.so';
+ {$ENDIF}
+ {$IFDEF DARWIN}
+ PluginFileExtension = '.dylib';
+ {$ENDIF}
+
+implementation
+uses UCore, UPluginInterface,
+{$IFDEF MSWINDOWS}
+ windows,
+{$ELSE}
+ dynlibs,
+{$ENDIF}
+UMain, SysUtils;
+
+{*********************
+ TPluginLoader
+ Implentation
+*********************}
+
+//-------------
+// Function that gives some Infos about the Module to the Core
+//-------------
+Procedure TPluginLoader.Info(const pInfo: PModuleInfo);
+begin
+ pInfo^.Name := 'TPluginLoader';
+ pInfo^.Version := MakeVersion(1,0,0,chr(0));
+ pInfo^.Description := 'Searches for Plugins, loads and unloads them';
+end;
+
+//-------------
+// Just the Constructor
+//-------------
+Constructor TPluginLoader.Create;
+begin
+ //Init PluginInterface
+ //Using Methods from UPluginInterface
+ PluginInterface.CreateHookableEvent := CreateHookableEvent;
+ PluginInterface.DestroyHookableEvent := DestroyHookableEvent;
+ PluginInterface.NotivyEventHooks := NotivyEventHooks;
+ PluginInterface.HookEvent := HookEvent;
+ PluginInterface.UnHookEvent := UnHookEvent;
+ PluginInterface.EventExists := EventExists;
+
+ PluginInterface.CreateService := @CreateService;
+ PluginInterface.DestroyService := DestroyService;
+ PluginInterface.CallService := CallService;
+ PluginInterface.ServiceExists := ServiceExists;
+
+ //UnSet Private Var
+ LoadingProcessFinished := False;
+end;
+
+//-------------
+//Is Called on Loading.
+//In this Method only Events and Services should be created
+//to offer them to other Modules or Plugins during the Init process
+//If False is Returned this will cause a Forced Exit
+//-------------
+Function TPluginLoader.Load: Boolean;
+begin
+ Result := True;
+
+ Try
+ //Start Searching for Plugins
+ BrowseDir(PluginPath);
+ Except
+ Result := False;
+ Core.ReportError(Integer(PChar('Error Browsing and Loading.')), Integer(PChar('TPluginLoader')));
+ end;
+end;
+
+//-------------
+//Is Called on Init Process
+//In this Method you can Hook some Events and Create + Init
+//your Classes, Variables etc.
+//If False is Returned this will cause a Forced Exit
+//-------------
+Function TPluginLoader.Init: Boolean;
+begin
+ //Just set Prvate Var to true.
+ LoadingProcessFinished := True;
+ Result := True;
+end;
+
+//-------------
+//Is Called if this Module has been Inited and there is a Exit.
+//Deinit is in backwards Initing Order
+//-------------
+Procedure TPluginLoader.DeInit;
+var
+ I: Integer;
+begin
+ //Force DeInit
+ //If some Plugins aren't DeInited for some Reason o0
+ For I := 0 to High(Plugins) do
+ begin
+ If (Plugins[I].State < 4) then
+ FreePlugin(I);
+ end;
+
+ //Nothing to do here. Core will remove the Hooks
+end;
+
+//-------------
+//Is Called if this Module will be unloaded and has been created
+//Should be used to Free Memory
+//-------------
+Procedure TPluginLoader.Free;
+begin
+ //Just save some Memory if it wasn't done now..
+ SetLength(Plugins, 0);
+end;
+
+//--------------
+// Browses the Path at _Path_ for Plugins
+//--------------
+Procedure TPluginLoader.BrowseDir(Path: String);
+var
+ SR: TSearchRec;
+begin
+ //Search for other Dirs to Browse
+ if FindFirst(Path + '*', faDirectory, SR) = 0 then begin
+ repeat
+ if (SR.Name <> '.') and (SR.Name <> '..') then
+ BrowseDir(Path + Sr.Name + PathDelim);
+ until FindNext(SR) <> 0;
+ end;
+ FindClose(SR);
+
+ //Search for Plugins at Path
+ if FindFirst(Path + '*' + PluginFileExtension, 0, SR) = 0 then
+ begin
+ repeat
+ AddPlugin(Path + SR.Name);
+ until FindNext(SR) <> 0;
+ end;
+ FindClose(SR);
+end;
+
+//--------------
+// If Plugin Exists: Index of Plugin, else -1
+//--------------
+Function TPluginLoader.PluginExists(Name: String): Integer;
+var
+ I: Integer;
+begin
+ Result := -1;
+
+ If (Length(Name) <= 32 { =>Length(TUS_PluginInfo.Name)}) then
+ begin
+ For I := 0 to High(Plugins) do
+ if (Plugins[I].Info.Name = Name) then
+ begin //Found the Plugin
+ Result := I;
+ Break;
+ end;
+ end;
+end;
+
+//--------------
+// Adds Plugin to the Array
+//--------------
+Procedure TPluginLoader.AddPlugin(Filename: String);
+var
+ hLib: THandle;
+ PInfo: Proc_PluginInfo;
+ Info: TUS_PluginInfo;
+ PluginID: Integer;
+begin
+ If (FileExists(Filename)) then
+ begin //Load Libary
+ hLib := LoadLibrary(PChar(Filename));
+ If (hLib <> 0) then
+ begin //Try to get Address of the Info Proc
+ PInfo := GetProcAddress (hLib, PChar('USPlugin_Info'));
+ If (@PInfo <> nil) then
+ begin
+ Info.cbSize := SizeOf(TUS_PluginInfo);
+
+ Try //Call Info Proc
+ PInfo(@Info);
+ Except
+ Info.Name := '';
+ Core.ReportError(Integer(PChar('Error getting Plugin Info: ' + Filename)), Integer(PChar('TPluginLoader')));
+ end;
+
+ //Is Name set ?
+ If (Trim(Info.Name) <> '') then
+ begin
+ PluginID := PluginExists(Info.Name);
+
+ If (PluginID > 0) AND (Plugins[PluginID].State >=4) then
+ PluginID := -1;
+
+ If (PluginID = -1) then
+ begin
+ //Add new item to array
+ PluginID := Length(Plugins);
+ SetLength(Plugins, PluginID + 1);
+
+ //Fill with Info:
+ Plugins[PluginID].Info := Info;
+ Plugins[PluginID].State := 0;
+ Plugins[PluginID].Path := Filename;
+ Plugins[PluginID].NeedsDeInit := False;
+ Plugins[PluginID].hLib := hLib;
+
+ //Try to get Procs
+ Plugins[PluginID].Procs.Load := GetProcAddress (hLib, PChar('USPlugin_Load'));
+ Plugins[PluginID].Procs.Init := GetProcAddress (hLib, PChar('USPlugin_Init'));
+ Plugins[PluginID].Procs.DeInit := GetProcAddress (hLib, PChar('USPlugin_DeInit'));
+
+ If (@Plugins[PluginID].Procs.Load = nil) OR (@Plugins[PluginID].Procs.Init = nil) OR (@Plugins[PluginID].Procs.DeInit = nil) then
+ begin
+ Plugins[PluginID].State := 255;
+ FreeLibrary(hLib);
+ Core.ReportError(Integer(PChar('Can''t get Plugin Procs from Libary: "' + Info.Name + '" ' + Filename)), Integer(PChar('TPluginLoader')));
+ end;
+
+ //Emulate loading process if this Plugin is loaded to late
+ If (LoadingProcessFinished) then
+ begin
+ CallLoad(PluginID);
+ CallInit(PluginID);
+ end;
+ end
+ Else If (LoadingProcessFinished = False) then
+ begin
+ If (Plugins[PluginID].Info.Version < Info.Version) then
+ begin //Found newer Version of this Plugin
+ Core.ReportDebug(Integer(PChar('Found a newer Version of Plugin: ' + String(Info.Name))), Integer(PChar('TPluginLoader')));
+
+ //Unload Old Plugin
+ UnloadPlugin(Integer(nil), PluginID);
+
+ //Fill with new Info
+ Plugins[PluginID].Info := Info;
+ Plugins[PluginID].State := 0;
+ Plugins[PluginID].Path := Filename;
+ Plugins[PluginID].NeedsDeInit := False;
+ Plugins[PluginID].hLib := hLib;
+
+ //Try to get Procs
+ Plugins[PluginID].Procs.Load := GetProcAddress (hLib, PChar('USPlugin_Load'));
+ Plugins[PluginID].Procs.Init := GetProcAddress (hLib, PChar('USPlugin_Init'));
+ Plugins[PluginID].Procs.DeInit := GetProcAddress (hLib, PChar('USPlugin_DeInit'));
+
+ If (@Plugins[PluginID].Procs.Load = nil) OR (@Plugins[PluginID].Procs.Init = nil) OR (@Plugins[PluginID].Procs.DeInit = nil) then
+ begin
+ FreeLibrary(hLib);
+ Plugins[PluginID].State := 255;
+ Core.ReportError(Integer(PChar('Can''t get Plugin Procs from Libary: "' + Info.Name + '" ' + Filename)), Integer(PChar('TPluginLoader')));
+ end;
+ end
+ else
+ begin //Newer Version already loaded
+ FreeLibrary(hLib);
+ end;
+ end
+ else
+ begin
+ FreeLibrary(hLib);
+ Core.ReportError(Integer(PChar('Plugin with this Name already exists: ' + String(Info.Name))), Integer(PChar('TPluginLoader')));
+ end;
+ end
+ else
+ begin
+ FreeLibrary(hLib);
+ Core.ReportError(Integer(PChar('No name reported: ' + Filename)), Integer(PChar('TPluginLoader')));
+ end;
+ end
+ else
+ begin
+ FreeLibrary(hLib);
+ Core.ReportError(Integer(PChar('Can''t find Info Procedure: ' + Filename)), Integer(PChar('TPluginLoader')));
+ end;
+ end
+ else
+ Core.ReportError(Integer(PChar('Can''t load Plugin Libary: ' + Filename)), Integer(PChar('TPluginLoader')));
+ end;
+end;
+
+//--------------
+// Calls Load Func of Plugin with the given Index
+//--------------
+Function TPluginLoader.CallLoad(Index: Cardinal): Integer;
+begin
+ Result := -2;
+ If(Index < Length(Plugins)) then
+ begin
+ If (@Plugins[Index].Procs.Load <> nil) AND (Plugins[Index].State = 0) then
+ begin
+ Try
+ Result := Plugins[Index].Procs.Load(@PluginInterface);
+ Except
+ Result := -3;
+ End;
+
+ If (Result = 0) then
+ Plugins[Index].State := 1
+ Else
+ begin
+ FreePlugin(Index);
+ Plugins[Index].State := 255;
+ Core.ReportError(Integer(PChar('Error calling Load Function from Plugin: ' + String(Plugins[Index].Info.Name))), Integer(PChar('TPluginLoader')));
+ end;
+ end;
+ end;
+end;
+
+//--------------
+// Calls Init Func of Plugin with the given Index
+//--------------
+Function TPluginLoader.CallInit(Index: Cardinal): Integer;
+begin
+ Result := -2;
+ If(Index < Length(Plugins)) then
+ begin
+ If (@Plugins[Index].Procs.Init <> nil) AND (Plugins[Index].State = 1) then
+ begin
+ Try
+ Result := Plugins[Index].Procs.Init(@PluginInterface);
+ Except
+ Result := -3;
+ End;
+
+ If (Result = 0) then
+ begin
+ Plugins[Index].State := 2;
+ Plugins[Index].NeedsDeInit := True;
+ end
+ Else
+ begin
+ FreePlugin(Index);
+ Plugins[Index].State := 255;
+ Core.ReportError(Integer(PChar('Error calling Init Function from Plugin: ' + String(Plugins[Index].Info.Name))), Integer(PChar('TPluginLoader')));
+ end;
+ end;
+ end;
+end;
+
+//--------------
+// Calls DeInit Proc of Plugin with the given Index
+//--------------
+Procedure TPluginLoader.CallDeInit(Index: Cardinal);
+begin
+ If(Index < Length(Plugins)) then
+ begin
+ If (Plugins[Index].State < 4) then
+ begin
+ If (@Plugins[Index].Procs.DeInit <> nil) and (Plugins[Index].NeedsDeInit) then
+ Try
+ Plugins[Index].Procs.DeInit(@PluginInterface);
+ Except
+
+ End;
+
+ //Don't forget to remove Services and Subscriptions by this Plugin
+ Core.Hooks.DelbyOwner(-1 - Index);
+
+ FreePlugin(Index);
+ end;
+ end;
+end;
+
+//--------------
+// Frees all Plugin Sources (Procs and Handles) - Helper for Deiniting Functions
+//--------------
+Procedure TPluginLoader.FreePlugin(Index: Cardinal);
+begin
+ Plugins[Index].State := 4;
+ Plugins[Index].Procs.Load := nil;
+ Plugins[Index].Procs.Init := nil;
+ Plugins[Index].Procs.DeInit := nil;
+
+ If (Plugins[Index].hLib <> 0) then
+ FreeLibrary(Plugins[Index].hLib);
+end;
+
+
+
+//--------------
+// wParam PChar(PluginName/PluginPath) | lParam (if wParam = nil) ID of the Plugin
+//--------------
+Function TPluginLoader.LoadPlugin(wParam, lParam: DWord): integer;
+var
+ Index: Integer;
+ sFile: String;
+begin
+ Result := -1;
+ sFile := '';
+ //lParam is ID
+ If (Pointer(wParam) = nil) then
+ begin
+ Index := lParam;
+ end
+ else
+ begin //wParam is PChar
+ try
+ sFile := String(PChar(Pointer(wParam)));
+ Index := PluginExists(sFile);
+ If (Index < 0) And FileExists(sFile) then
+ begin //Is Filename
+ AddPlugin(sFile);
+ Result := Plugins[High(Plugins)].State;
+ end;
+ except
+ Index := -2;
+ end;
+ end;
+
+
+ If (Index >= 0) and (Index < Length(Plugins)) then
+ begin
+ AddPlugin(Plugins[Index].Path);
+ Result := Plugins[Index].State;
+ end;
+end;
+
+//--------------
+// wParam PChar(PluginName/PluginPath) | lParam (if wParam = nil) ID of the Plugin
+//--------------
+Function TPluginLoader.UnloadPlugin(wParam, lParam: DWord): integer;
+var
+ Index: Integer;
+ sName: String;
+begin
+ Result := -1;
+ //lParam is ID
+ If (Pointer(wParam) = nil) then
+ begin
+ Index := lParam;
+ end
+ else
+ begin //wParam is PChar
+ try
+ sName := String(PChar(Pointer(wParam)));
+ Index := PluginExists(sName);
+ except
+ Index := -2;
+ end;
+ end;
+
+
+ If (Index >= 0) and (Index < Length(Plugins)) then
+ CallDeInit(Index)
+end;
+
+//--------------
+// If wParam = -1 then (If lParam = nil then get length of Moduleinfo Array. If lparam <> nil then write array of TUS_PluginInfo to address at lparam) Else (Get PluginInfo of Plugin with Index(wParam) to Address at lParam)
+//--------------
+Function TPluginLoader.GetPluginInfo(wParam, lParam: DWord): integer;
+var I: Integer;
+begin
+ Result := 0;
+ If (wParam < 0) then
+ begin //Get Info of 1 Plugin
+ If (Pointer(lParam) <> nil) AND (wParam < Length(Plugins)) then
+ begin
+ Try
+ Result := 1;
+ PUS_PluginInfo(Pointer(lParam))^ := Plugins[wParam].Info;
+ Except
+
+ End;
+ end;
+ end
+ Else If (Pointer(lParam) = nil) then
+ begin //Get Length of Plugin (Info) Array
+ Result := Length(Plugins);
+ end
+ Else //Write PluginInfo Array to Address in lParam
+ begin
+ Try
+ For I := 0 to high(Plugins) do
+ PAUS_PluginInfo(Pointer(lParam))^[I] := Plugins[I].Info;
+ Result := Length(Plugins);
+ Except
+ Core.ReportError(Integer(PChar('Could not write PluginInfo Array')), Integer(PChar('TPluginLoader')));
+ End;
+ end;
+
+end;
+
+//--------------
+// If wParam = -1 then (If lParam = nil then get length of Plugin State Array. If lparam <> nil then write array of Byte to address at lparam) Else (Return State of Plugin with Index(wParam))
+//--------------
+Function TPluginLoader.GetPluginState(wParam, lParam: DWord): integer;
+var I: Integer;
+begin
+ Result := -1;
+ If (wParam < 0) then
+ begin //Get State of 1 Plugin
+ If (wParam < Length(Plugins)) then
+ begin
+ Result := Plugins[wParam].State;
+ end;
+ end
+ Else If (Pointer(lParam) = nil) then
+ begin //Get Length of Plugin (Info) Array
+ Result := Length(Plugins);
+ end
+ Else //Write PluginInfo Array to Address in lParam
+ begin
+ Try
+ For I := 0 to high(Plugins) do
+ Byte(Pointer(lParam + I)^) := Plugins[I].State;
+ Result := Length(Plugins);
+ Except
+ Core.ReportError(Integer(PChar('Could not write PluginState Array')), Integer(PChar('TPluginLoader')));
+ End;
+ end;
+end;
+
+
+
+
+
+{*********************
+ TtehPlugins
+ Implentation
+*********************}
+
+//-------------
+// Function that gives some Infos about the Module to the Core
+//-------------
+Procedure TtehPlugins.Info(const pInfo: PModuleInfo);
+begin
+ pInfo^.Name := 'TtehPlugins';
+ pInfo^.Version := MakeVersion(1,0,0,chr(0));
+ pInfo^.Description := 'Module executing the Plugins!';
+end;
+
+//-------------
+// Just the Constructor
+//-------------
+Constructor TtehPlugins.Create;
+begin
+ PluginLoader := nil;
+end;
+
+//-------------
+//Is Called on Loading.
+//In this Method only Events and Services should be created
+//to offer them to other Modules or Plugins during the Init process
+//If False is Returned this will cause a Forced Exit
+//-------------
+Function TtehPlugins.Load: Boolean;
+var
+ I: Integer; //Counter
+ CurExecutedBackup: Integer; //backup of Core.CurExecuted Attribute
+label Continue;
+begin
+ //Get Pointer to PluginLoader
+ PluginLoader := PPluginLoader(Core.GetModulebyName('TPluginLoader'));
+ If (PluginLoader = nil) then
+ begin
+ Result := False;
+ Core.ReportError(Integer(PChar('Could not get Pointer to PluginLoader')), Integer(PChar('TtehPlugins')));
+ end
+ else
+ begin
+ Result := True;
+
+ //Backup CurExecuted
+ CurExecutedBackup := Core.CurExecuted;
+
+ //Start Loading the Plugins
+ I := 0;
+ Continue:
+ Try
+ While (I <= High(PluginLoader.Plugins)) do
+ begin
+ Core.CurExecuted := -1 - I;
+
+ //Unload Plugin if not correctly Executed
+ If (PluginLoader.CallLoad(I) <> 0) then
+ begin
+ PluginLoader.CallDeInit(I);
+ PluginLoader.Plugins[I].State := 254; //Plugin asks for unload
+ Core.ReportDebug(Integer(PChar('Plugin Selfabort during loading process: ' + String(PluginLoader.Plugins[I].Info.Name))), Integer(PChar('TtehPlugins')));
+ end
+ else
+ Core.ReportDebug(Integer(PChar('Plugin loaded succesful: ' + String(PluginLoader.Plugins[I].Info.Name))), Integer(PChar('TtehPlugins')));
+
+ Inc(I);
+ end;
+ Except
+ //Plugin could not be loaded.
+ // => Show Error Message, then ShutDown Plugin
+ on E: Exception do
+ begin
+ PluginLoader.CallDeInit(I);
+ PluginLoader.Plugins[I].State := 255; //Plugin causes Error
+ Core.ReportError(Integer(PChar('Plugin causes Error during loading process: ' + PluginLoader.Plugins[I].Info.Name + ', ErrorMsg: "' + E.Message + '"')), Integer(PChar('TtehPlugins')));
+
+
+ //don't forget to increase I
+ Inc(I);
+ end;
+ End;
+
+ If (I <= High(PluginLoader.Plugins)) then
+ Goto Continue;
+
+ //Reset CurExecuted
+ Core.CurExecuted := CurExecutedBackup;
+ end;
+end;
+
+//-------------
+//Is Called on Init Process
+//In this Method you can Hook some Events and Create + Init
+//your Classes, Variables etc.
+//If False is Returned this will cause a Forced Exit
+//-------------
+Function TtehPlugins.Init: Boolean;
+var
+ I: Integer; //Counter
+ CurExecutedBackup: Integer; //backup of Core.CurExecuted Attribute
+label Continue;
+begin
+ Result := True;
+
+ //Backup CurExecuted
+ CurExecutedBackup := Core.CurExecuted;
+
+ //Start Loading the Plugins
+ I := 0;
+ Continue:
+ Try
+ While (I <= High(PluginLoader.Plugins)) do
+ begin
+ Core.CurExecuted := -1 - I;
+
+ //Unload Plugin if not correctly Executed
+ If (PluginLoader.CallInit(I) <> 0) then
+ begin
+ PluginLoader.CallDeInit(I);
+ PluginLoader.Plugins[I].State := 254; //Plugin asks for unload
+ Core.ReportDebug(Integer(PChar('Plugin Selfabort during init process: ' + String(PluginLoader.Plugins[I].Info.Name))), Integer(PChar('TtehPlugins')));
+ end
+ else
+ Core.ReportDebug(Integer(PChar('Plugin inited succesful: ' + String(PluginLoader.Plugins[I].Info.Name))), Integer(PChar('TtehPlugins')));
+
+ //don't forget to increase I
+ Inc(I);
+ end;
+ Except
+ //Plugin could not be loaded.
+ // => Show Error Message, then ShutDown Plugin
+ PluginLoader.CallDeInit(I);
+ PluginLoader.Plugins[I].State := 255; //Plugin causes Error
+ Core.ReportError(Integer(PChar('Plugin causes Error during init process: ' + String(PluginLoader.Plugins[I].Info.Name))), Integer(PChar('TtehPlugins')));
+
+ //don't forget to increase I
+ Inc(I);
+ End;
+
+ If (I <= High(PluginLoader.Plugins)) then
+ GoTo Continue;
+
+ //Reset CurExecuted
+ Core.CurExecuted := CurExecutedBackup;
+end;
+
+//-------------
+//Is Called if this Module has been Inited and there is a Exit.
+//Deinit is in backwards Initing Order
+//-------------
+Procedure TtehPlugins.DeInit;
+var
+ I: Integer; //Counter
+ CurExecutedBackup: Integer; //backup of Core.CurExecuted Attribute
+label Continue;
+begin
+ //Backup CurExecuted
+ CurExecutedBackup := Core.CurExecuted;
+
+ //Start Loop
+ I := 0;
+
+ Continue:
+ Try
+ While (I <= High(PluginLoader.Plugins)) do
+ begin
+ //DeInit Plugin
+ PluginLoader.CallDeInit(I);
+
+ Inc(I);
+ end;
+ Except
+ Inc(I);
+ End;
+
+ If I <= High(PluginLoader.Plugins) then
+ Goto Continue;
+
+ //Reset CurExecuted
+ Core.CurExecuted := CurExecutedBackup;
+end;
+
+end.
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