Moved: The folder classes has been renamed to base

Updated: ultrastardx.dpr has been changed accordingly 

git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/trunk@1339 b956fd51-792f-4845-bead-9b4dfca2ff2c

1 files changed, 173 insertions, 0 deletions

diff --git a/src/base/UPlatformLinux.pas b/src/base/UPlatformLinux.pas
new file mode 100644
index 00000000..3227e4f8
--- /dev/null
+++ b/src/base/UPlatformLinux.pas
@@ -0,0 +1,173 @@
+unit UPlatformLinux;
+
+interface
+
+{$IFDEF FPC}
+  {$MODE Delphi}
+{$ENDIF}
+
+{$I switches.inc}
+
+uses
+  Classes,
+  UPlatform,
+  UConfig;
+
+type
+  TPlatformLinux = class(TPlatform)
+    private
+      UseLocalDirs: boolean;
+
+      procedure DetectLocalExecution();
+      function GetHomeDir(): string;
+    public
+      procedure Init; override;
+
+      function DirectoryFindFiles(Dir, Filter: WideString; ReturnAllSubDirs: Boolean): TDirectoryEntryArray; override;
+
+      function GetLogPath        : WideString; override;
+      function GetGameSharedPath : WideString; override;
+      function GetGameUserPath   : WideString; override;
+  end;
+
+implementation
+
+uses
+  UCommandLine,
+  BaseUnix,
+  {$IF FPC_VERSION_INT >= 2002002}
+  pwd,
+  {$IFEND}
+  SysUtils,
+  ULog;
+
+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 config-linux.inc.
+ *
+ * Sets UseLocalDirs to true if the game is executed locally, false otherwise.
+ *}
+procedure TPlatformLinux.DetectLocalExecution();
+var
+  LocalDir: string;
+begin
+  LocalDir := GetExecutionDir();
+  
+  // we just check if the 'languages' folder exists in the
+  // directory of the executable. If so -> local execution.
+  UseLocalDirs := (DirectoryExists(LocalDir + 'languages'));
+end;
+
+function TPlatformLinux.DirectoryFindFiles(Dir, Filter: WideString; ReturnAllSubDirs: Boolean): TDirectoryEntryArray;
+var
+  i: Integer;
+  TheDir  : pDir;
+  ADirent : pDirent;
+  Entry   : Longint;
+  lAttrib : integer;
+begin
+  i := 0;
+  Filter := LowerCase(Filter);
+
+  TheDir := FpOpenDir( Dir );
+  if Assigned(TheDir) then
+  begin
+    repeat
+      ADirent :=  FpReadDir(TheDir^);
+
+      if Assigned(ADirent) and (ADirent^.d_name <> '.') and (ADirent^.d_name <> '..') then
+      begin
+        lAttrib := FileGetAttr(Dir + ADirent^.d_name);
+        if ReturnAllSubDirs and ((lAttrib and faDirectory) <> 0) then
+        begin
+          SetLength( Result, i + 1);
+          Result[i].Name        := ADirent^.d_name;
+          Result[i].IsDirectory := true;
+          Result[i].IsFile      := false;
+          i := i + 1;
+        end
+        else if (Length(Filter) = 0) or (Pos( Filter, LowerCase(ADirent^.d_name)) > 0) then
+        begin
+          SetLength( Result, i + 1);
+          Result[i].Name        := ADirent^.d_name;
+          Result[i].IsDirectory := false;
+          Result[i].IsFile      := true;
+          i := i + 1;
+        end;
+      end;
+    until (ADirent = nil);
+
+    FpCloseDir(TheDir^);
+  end;
+end;
+
+function TPlatformLinux.GetLogPath: WideString;
+begin
+  if UseLocalDirs then
+    Result := GetExecutionDir()
+  else
+    Result := GetGameUserPath() + 'logs/';
+
+  // create non-existing directories
+  ForceDirectories(Result);
+end;
+
+function TPlatformLinux.GetGameSharedPath: WideString;
+begin
+  if UseLocalDirs then
+    Result := GetExecutionDir()
+  else
+    Result := IncludeTrailingPathDelimiter(INSTALL_DATADIR);
+end;
+
+function TPlatformLinux.GetGameUserPath: WideString;
+begin
+  if UseLocalDirs then
+    Result := GetExecutionDir()
+  else
+    Result := GetHomeDir() + '.ultrastardx/';
+end;
+
+{**
+ * Returns the user's home directory terminated by a path delimiter
+ *}
+function TPlatformLinux.GetHomeDir(): string;
+{$IF FPC_VERSION_INT >= 2002002}
+var
+  PasswdEntry: PPasswd;
+{$IFEND}
+begin
+  Result := '';
+
+  {$IF FPC_VERSION_INT >= 2002002}
+  // try to retrieve the info from passwd
+  PasswdEntry := FpGetpwuid(FpGetuid());
+  if (PasswdEntry <> nil) then
+    Result := PasswdEntry.pw_dir;
+  {$IFEND}
+  // fallback if passwd does not contain the path
+  if (Result = '') then
+    Result := GetEnvironmentVariable('HOME');
+  // add trailing path delimiter (normally '/')
+  if (Result <> '') then
+    Result := IncludeTrailingPathDelimiter(Result);
+
+  {$IF FPC_VERSION_INT >= 2002002}
+  // GetUserDir() is another function that returns a user path.
+  // It uses env-var HOME or a fallback to a temp-dir.
+  //Result := GetUserDir();
+  {$IFEND}
+end;
+
+end.