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{* 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.
*
* $URL$
* $Id$
*}
unit UPlatform;
// Comment by Eddie:
// This unit defines an interface for platform specific utility functions.
// The Interface is implemented in separate files for each platform:
// UPlatformWindows, UPlatformLinux and UPlatformMacOSX.
interface
{$IFDEF FPC}
{$MODE Delphi}
{$ENDIF}
{$I switches.inc}
uses
Classes,
UPath;
type
TPlatform = class
function GetExecutionDir(): IPath;
procedure Init; virtual;
function TerminateIfAlreadyRunning(var WndTitle: string): boolean; virtual;
procedure Halt; virtual;
function GetLogPath: IPath; virtual; abstract;
function GetGameSharedPath: IPath; virtual; abstract;
function GetGameUserPath: IPath; virtual; abstract;
end;
function Platform(): TPlatform;
implementation
uses
SysUtils,
{$IF Defined(MSWINDOWS)}
UPlatformWindows,
{$ELSEIF Defined(DARWIN)}
UPlatformMacOSX,
{$ELSEIF Defined(UNIX)}
UPlatformLinux,
{$IFEND}
ULog,
UUnicodeUtils,
UFilesystem;
// I modified it to use the Platform_singleton in this location (in the implementation)
// so that this variable can NOT be overwritten from anywhere else in the application.
// the accessor function platform, emulates all previous calls to work the same way.
var
Platform_singleton: TPlatform;
function Platform: TPlatform;
begin
Result := Platform_singleton;
end;
(**
* Default Init() implementation
*)
procedure TPlatform.Init;
begin
end;
(**
* Default Halt() implementation
*)
procedure TPlatform.Halt;
begin
// Note: Application.terminate is NOT the same
System.Halt;
end;
{**
* Returns the directory of the executable
*}
function TPlatform.GetExecutionDir(): IPath;
var
ExecName, ExecDir: IPath;
begin
ExecName := Path(ParamStr(0));
ExecDir := ExecName.GetPath;
Result := ExecDir.GetAbsolutePath();
end;
(**
* Default TerminateIfAlreadyRunning() implementation
*)
function TPlatform.TerminateIfAlreadyRunning(var WndTitle: string): boolean;
begin
Result := false;
end;
initialization
{$IF Defined(MSWINDOWS)}
Platform_singleton := TPlatformWindows.Create;
{$ELSEIF Defined(DARWIN)}
Platform_singleton := TPlatformMacOSX.Create;
{$ELSEIF Defined(UNIX)}
Platform_singleton := TPlatformLinux.Create;
{$IFEND}
finalization
Platform_singleton.Free;
end.
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