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Simba/Units/MMLAddon/plugins.pas
2010-03-12 18:10:10 +01:00

118 lines
3.3 KiB
ObjectPascal

{
This file is part of the Mufasa Macro Library (MML)
Copyright (c) 2009 by Raymond van Venetië and Merlijn Wajer
MML 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 3 of the License, or
(at your option) any later version.
MML 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 MML. If not, see <http://www.gnu.org/licenses/>.
See the file COPYING, included in this distribution,
for details about the copyright.
Plugins Class for the Mufasa Macro Library
}
unit plugins;
{
Problems with SMART; you cannot free the plugin when smart is open..
Therefore, loading & free-ing plugins per script run is not an option.
Assigning a TMPlugin per Tab might be a do-able solution, but will still cope with the SMART Problems..
So the question is: Plugins Per Tab,Per Run or Global?
}
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, dynlibs, libloader;
const
cv_StdCall = 0; //StdCall
cv_Register = 1; //Register
type
TMPluginMethod = record
FuncPtr : pointer;
FuncStr : string;
FuncConv: integer;
end;
TMPlugin = record
Methods : Array of TMPluginMethod;
MethodLen : integer;
end;
TMPluginArray = array of TMPlugin;
{ TMPlugins }
TMPlugins = class (TGenericLoader)
private
Plugins : TMPluginArray;
NumPlugins : integer;
protected
function InitPlugin(plugin: TLibHandle): boolean; override;
public
property MPlugins : TMPluginArray read Plugins;
property Count : integer read NumPlugins;
end;
implementation
uses
MufasaTypes,FileUtil;
{ TMPlugins }
function TMPlugins.InitPlugin(plugin: TLibHandle): boolean;
var
pntrArrc : function : integer; stdcall;
GetFuncInfo : function (x: Integer; var ProcAddr: Pointer; var ProcDef: PChar) : Integer; stdcall;
GetFuncConv : function (x: integer) : integer; stdcall;
GetTypeCount : function : Integer; stdcall;
GetTypeInfo : function (x: Integer; var sType, sTypeDef: string): Integer; stdcall;
PD : PChar;
pntr : Pointer;
arrc, ii : integer;
begin
Pointer(pntrArrc) := GetProcAddress(plugin, PChar('GetFunctionCount'));
if pntrArrc = nil then begin result:= false; exit; end;
Pointer(GetFuncInfo) := GetProcAddress(plugin, PChar('GetFunctionInfo'));
if GetFuncInfo = nil then begin result:= false; exit; end;
Pointer(GetFuncConv) := GetProcAddress(plugin,pchar('GetFunctionCallingConv'));
arrc := pntrArrc();
SetLength(Plugins,NumPlugins+1);
Plugins[NumPlugins].MethodLen := Arrc;
SetLength(Plugins[NumPlugins].Methods, ArrC);
pd := StrAlloc(255);
for ii := 0 to ArrC-1 do
begin;
if (GetFuncInfo(ii, pntr, pd) < 0) then
Continue;
Plugins[NumPlugins].Methods[ii].FuncPtr := pntr;
Plugins[NumPlugins].Methods[ii].FuncStr := pd;
if GetFuncConv <> nil then
Plugins[NumPlugins].Methods[ii].FuncConv := GetFuncConv(ii)
else
Plugins[NumPlugins].Methods[ii].FuncConv := cv_stdcall;
end;
StrDispose(pd);
inc(NumPlugins);
result:= true;
end;
end.