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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 UPlatformLinux;
interface
{$IFDEF FPC}
{$MODE Delphi}
{$ENDIF}
{$I switches.inc}
uses
Classes,
UPlatform,
UConfig,
UPath;
type
TPlatformLinux = class(TPlatform)
private
UseLocalDirs: boolean;
procedure DetectLocalExecution();
function GetHomeDir(): IPath;
public
procedure Init; override;
function GetLogPath : IPath; override;
function GetGameSharedPath : IPath; override;
function GetGameUserPath : IPath; override;
end;
implementation
uses
UCommandLine,
BaseUnix,
pwd,
SysUtils,
ULog;
const
{$I paths.inc}
procedure TPlatformLinux.Init;
begin
inherited Init();
DetectLocalExecution();
end;
{**
* Detects whether the game was executed locally or globally.
* - It is local if it was not installed and directly executed from
* within the game folder. In this case resources (themes, language-files)
* reside in the directory of the executable.
* - It is global if the game was installed (e.g. to /usr/bin) and
* the resources are in a separate folder (e.g. /usr/share/ultrastardx)
* which name is stored in the INSTALL_DATADIR constant in paths.inc.
*
* Sets UseLocalDirs to true if the game is executed locally, false otherwise.
*}
procedure TPlatformLinux.DetectLocalExecution();
var
LocalDir, LanguageDir: IPath;
begin
// we just check if the 'languages' folder exists in the
// directory of the executable. If so -> local execution.
LocalDir := GetExecutionDir();
LanguageDir := LocalDir.Append('languages');
UseLocalDirs := LanguageDir.IsDirectory;
end;
function TPlatformLinux.GetLogPath: IPath;
begin
if UseLocalDirs then
Result := GetExecutionDir()
else
Result := GetGameUserPath().Append('logs', pdAppend);
// create non-existing directories
Result.CreateDirectory(true);
end;
function TPlatformLinux.GetGameSharedPath: IPath;
begin
if UseLocalDirs then
Result := GetExecutionDir()
else
Result := Path(INSTALL_DATADIR, pdAppend);
end;
function TPlatformLinux.GetGameUserPath: IPath;
begin
if UseLocalDirs then
Result := GetExecutionDir()
else
Result := GetHomeDir().Append('.ultrastardx', pdAppend);
end;
{**
* Returns the user's home directory terminated by a path delimiter
*}
function TPlatformLinux.GetHomeDir(): IPath;
var
PasswdEntry: PPasswd;
begin
Result := PATH_NONE;
// try to retrieve the info from passwd
PasswdEntry := FpGetpwuid(FpGetuid());
if (PasswdEntry <> nil) then
Result := Path(PasswdEntry.pw_dir);
// fallback if passwd does not contain the path
if (Result.IsUnset) then
Result := Path(GetEnvironmentVariable('HOME'));
// add trailing path delimiter (normally '/')
if (Result.IsSet) then
Result := Result.AppendPathDelim();
// GetUserDir() is another function that returns a user path.
// It uses env-var HOME or a fallback to a temp-dir.
//Result := GetUserDir();
end;
end.
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