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-rw-r--r--src/base/UFilesystem.pas692
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diff --git a/src/base/UFilesystem.pas b/src/base/UFilesystem.pas
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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 UFilesystem;
-
-interface
-
-{$IFDEF FPC}
- {$MODE Delphi}
-{$ENDIF}
-
-{$I switches.inc}
-
-uses
- SysUtils,
- Classes,
- {$IFDEF MSWINDOWS}
- Windows,
- TntSysUtils,
- {$ENDIF}
- UPath;
-
-type
- {$IFDEF MSWINDOWS}
- TSytemSearchRec = TSearchRecW;
- {$ELSE}
- TSytemSearchRec = TSearchRec;
- {$ENDIF}
-
- TFileInfo = record
- Time: integer; // timestamp
- Size: int64; // file size (byte)
- Attr: integer; // file attributes
- Name: IPath; // basename with extension
- end;
-
- {**
- * Iterates through the search results retrieved by FileFind().
- * Example usage:
- * while(Iter.HasNext()) do
- * SearchRec := Iter.Next();
- *}
- IFileIterator = interface
- function HasNext(): boolean;
- function Next(): TFileInfo;
- end;
-
- {**
- * Wrapper for SysUtils file functions.
- * For documentation and examples, check the SysUtils equivalent.
- *}
- IFileSystem = interface
- function ExpandFileName(const FileName: IPath): IPath;
- function FileCreate(const FileName: IPath): THandle;
- function DirectoryCreate(const Dir: IPath): boolean;
- function FileOpen(const FileName: IPath; Mode: longword): THandle;
- function FileAge(const FileName: IPath): integer; overload;
- function FileAge(const FileName: IPath; out FileDateTime: TDateTime): boolean; overload;
-
- function DirectoryExists(const Name: IPath): boolean;
-
- {**
- * On Windows: returns true only for files (not directories)
- * On Apple/Unix: returns true for all kind of files (even directories)
- * @seealso SysUtils.FileExists()
- *}
- function FileExists(const Name: IPath): boolean;
-
- function FileGetAttr(const FileName: IPath): Cardinal;
- function FileSetAttr(const FileName: IPath; Attr: integer): boolean;
- function FileIsReadOnly(const FileName: IPath): boolean;
- function FileSetReadOnly(const FileName: IPath; ReadOnly: boolean): boolean;
- function FileIsAbsolute(const FileName: IPath): boolean;
- function ForceDirectories(const Dir: IPath): boolean;
- function RenameFile(const OldName, NewName: IPath): boolean;
- function DeleteFile(const FileName: IPath): boolean;
- function RemoveDir(const Dir: IPath): boolean;
-
- {**
- * Copies file Source to Target. If FailIfExists is true, the file is not
- * copied if it already exists.
- * Returns true if the file was successfully copied.
- *}
- function CopyFile(const Source, Target: IPath; FailIfExists: boolean): boolean;
-
- function ExtractFileDrive(const FileName: IPath): IPath;
- function ExtractFilePath(const FileName: IPath): IPath;
- function ExtractFileDir(const FileName: IPath): IPath;
- function ExtractFileName(const FileName: IPath): IPath;
- function ExtractFileExt(const FileName: IPath): IPath;
- function ExtractRelativePath(const BaseName: IPath; const FileName: IPath): IPath;
-
- function ChangeFileExt(const FileName: IPath; const Extension: IPath): IPath;
-
- function IncludeTrailingPathDelimiter(const FileName: IPath): IPath;
- function ExcludeTrailingPathDelimiter(const FileName: IPath): IPath;
-
- {**
- * Searches for a file with filename Name in the directories given in DirList.
- *}
- function FileSearch(const Name: IPath; DirList: array of IPath): IPath;
-
- {**
- * More convenient version of FindFirst/Next/Close with iterator support.
- *}
- function FileFind(const FilePattern: IPath; Attr: integer): IFileIterator;
-
- {**
- * Old style search functions. Use FileFind() instead.
- *}
- function FindFirst(const FilePattern: IPath; Attr: integer; var F: TSytemSearchRec): integer;
- function FindNext(var F: TSytemSearchRec): integer;
- procedure FindClose(var F: TSytemSearchRec);
-
- function GetCurrentDir: IPath;
- function SetCurrentDir(const Dir: IPath): boolean;
-
- {**
- * Returns true if the filesystem is case-sensitive.
- *}
- function IsCaseSensitive(): boolean;
- end;
-
- function FileSystem(): IFileSystem;
-
-implementation
-
-type
- TFileSystemImpl = class(TInterfacedObject, IFileSystem)
- public
- function ExpandFileName(const FileName: IPath): IPath;
- function FileCreate(const FileName: IPath): THandle;
- function DirectoryCreate(const Dir: IPath): boolean;
- function FileOpen(const FileName: IPath; Mode: longword): THandle;
- function FileAge(const FileName: IPath): integer; overload;
- function FileAge(const FileName: IPath; out FileDateTime: TDateTime): boolean; overload;
- function DirectoryExists(const Name: IPath): boolean;
- function FileExists(const Name: IPath): boolean;
- function FileGetAttr(const FileName: IPath): Cardinal;
- function FileSetAttr(const FileName: IPath; Attr: integer): boolean;
- function FileIsReadOnly(const FileName: IPath): boolean;
- function FileSetReadOnly(const FileName: IPath; ReadOnly: boolean): boolean;
- function FileIsAbsolute(const FileName: IPath): boolean;
- function ForceDirectories(const Dir: IPath): boolean;
- function RenameFile(const OldName, NewName: IPath): boolean;
- function DeleteFile(const FileName: IPath): boolean;
- function RemoveDir(const Dir: IPath): boolean;
- function CopyFile(const Source, Target: IPath; FailIfExists: boolean): boolean;
-
- function ExtractFileDrive(const FileName: IPath): IPath;
- function ExtractFilePath(const FileName: IPath): IPath;
- function ExtractFileDir(const FileName: IPath): IPath;
- function ExtractFileName(const FileName: IPath): IPath;
- function ExtractFileExt(const FileName: IPath): IPath;
- function ExtractRelativePath(const BaseName: IPath; const FileName: IPath): IPath;
- function ChangeFileExt(const FileName: IPath; const Extension: IPath): IPath;
- function IncludeTrailingPathDelimiter(const FileName: IPath): IPath;
- function ExcludeTrailingPathDelimiter(const FileName: IPath): IPath;
-
- function FileSearch(const Name: IPath; DirList: array of IPath): IPath;
- function FileFind(const FilePattern: IPath; Attr: integer): IFileIterator;
-
- function FindFirst(const FilePattern: IPath; Attr: integer; var F: TSytemSearchRec): integer;
- function FindNext(var F: TSytemSearchRec): integer;
- procedure FindClose(var F: TSytemSearchRec);
-
- function GetCurrentDir: IPath;
- function SetCurrentDir(const Dir: IPath): boolean;
-
- function IsCaseSensitive(): boolean;
- end;
-
- TFileIterator = class(TInterfacedObject, IFileIterator)
- private
- fHasNext: boolean;
- fSearchRec: TSytemSearchRec;
- public
- constructor Create(const FilePattern: IPath; Attr: integer);
- destructor Destroy(); override;
-
- function HasNext(): boolean;
- function Next(): TFileInfo;
- end;
-
-
-var
- FileSystem_Singleton: IFileSystem;
-
-function FileSystem(): IFileSystem;
-begin
- Result := FileSystem_Singleton;
-end;
-
-function TFileSystemImpl.FileFind(const FilePattern: IPath; Attr: integer): IFileIterator;
-begin
- Result := TFileIterator.Create(FilePattern, Attr);
-end;
-
-function TFileSystemImpl.IsCaseSensitive(): boolean;
-begin
- // Windows and Mac OS X do not have case sensitive file systems
- {$IF Defined(MSWINDOWS) or Defined(DARWIN)}
- Result := false;
- {$ELSE}
- Result := true;
- {$IFEND}
-end;
-
-function TFileSystemImpl.FileIsAbsolute(const FileName: IPath): boolean;
-var
- NameStr: UTF8String;
-begin
- Result := true;
- NameStr := FileName.ToUTF8();
-
- {$IFDEF MSWINDOWS}
- // check if drive is given 'C:...'
- if (FileName.GetDrive().ToUTF8 <> '') then
- Exit;
- // check if path starts with '\\'
- if (Length(NameStr) >= 2) and
- (NameStr[1] = PathDelim) and (NameStr[2] = PathDelim) then
- Exit;
- {$ELSE} // Unix based systems
- // check if root dir given '/...'
- if (Length(NameStr) >= 1) and (NameStr[1] = PathDelim) then
- Exit;
- {$ENDIF}
-
- Result := false;
-end;
-
-{$IFDEF MSWINDOWS}
-
-function TFileSystemImpl.ExpandFileName(const FileName: IPath): IPath;
-begin
- Result := Path(WideExpandFileName(FileName.ToWide()));
-end;
-
-function TFileSystemImpl.FileCreate(const FileName: IPath): THandle;
-begin
- Result := WideFileCreate(FileName.ToWide());
-end;
-
-function TFileSystemImpl.DirectoryCreate(const Dir: IPath): boolean;
-begin
- Result := WideCreateDir(Dir.ToWide());
-end;
-
-function TFileSystemImpl.FileOpen(const FileName: IPath; Mode: longword): THandle;
-begin
- Result := WideFileOpen(FileName.ToWide(), Mode);
-end;
-
-function TFileSystemImpl.FileAge(const FileName: IPath): integer;
-begin
- Result := WideFileAge(FileName.ToWide());
-end;
-
-function TFileSystemImpl.FileAge(const FileName: IPath; out FileDateTime: TDateTime): boolean;
-begin
- Result := WideFileAge(FileName.ToWide(), FileDateTime);
-end;
-
-function TFileSystemImpl.DirectoryExists(const Name: IPath): boolean;
-begin
- Result := WideDirectoryExists(Name.ToWide());
-end;
-
-function TFileSystemImpl.FileExists(const Name: IPath): boolean;
-begin
- Result := WideFileExists(Name.ToWide());
-end;
-
-function TFileSystemImpl.FileGetAttr(const FileName: IPath): Cardinal;
-begin
- Result := WideFileGetAttr(FileName.ToWide());
-end;
-
-function TFileSystemImpl.FileSetAttr(const FileName: IPath; Attr: integer): boolean;
-begin
- Result := WideFileSetAttr(FileName.ToWide(), Attr);
-end;
-
-function TFileSystemImpl.FileIsReadOnly(const FileName: IPath): boolean;
-begin
- Result := WideFileIsReadOnly(FileName.ToWide());
-end;
-
-function TFileSystemImpl.FileSetReadOnly(const FileName: IPath; ReadOnly: boolean): boolean;
-begin
- Result := WideFileSetReadOnly(FileName.ToWide(), ReadOnly);
-end;
-
-function TFileSystemImpl.ForceDirectories(const Dir: IPath): boolean;
-begin
- Result := WideForceDirectories(Dir.ToWide());
-end;
-
-function TFileSystemImpl.FileSearch(const Name: IPath; DirList: array of IPath): IPath;
-var
- I: integer;
- DirListStr: WideString;
-begin
- DirListStr := '';
- for I := 0 to High(DirList) do
- begin
- if (I > 0) then
- DirListStr := DirListStr + PathSep;
- DirListStr := DirListStr + DirList[I].ToWide();
- end;
- Result := Path(WideFileSearch(Name.ToWide(), DirListStr));
-end;
-
-function TFileSystemImpl.RenameFile(const OldName, NewName: IPath): boolean;
-begin
- Result := WideRenameFile(OldName.ToWide(), NewName.ToWide());
-end;
-
-function TFileSystemImpl.DeleteFile(const FileName: IPath): boolean;
-begin
- Result := WideDeleteFile(FileName.ToWide());
-end;
-
-function TFileSystemImpl.RemoveDir(const Dir: IPath): boolean;
-begin
- Result := WideRemoveDir(Dir.ToWide());
-end;
-
-function TFileSystemImpl.CopyFile(const Source, Target: IPath; FailIfExists: boolean): boolean;
-begin
- Result := WideCopyFile(Source.ToWide(), Target.ToWide(), FailIfExists);
-end;
-
-function TFileSystemImpl.ExtractFileDrive(const FileName: IPath): IPath;
-begin
- Result := Path(WideExtractFileDrive(FileName.ToWide()));
-end;
-
-function TFileSystemImpl.ExtractFilePath(const FileName: IPath): IPath;
-begin
- Result := Path(WideExtractFilePath(FileName.ToWide()));
-end;
-
-function TFileSystemImpl.ExtractFileDir(const FileName: IPath): IPath;
-begin
- Result := Path(WideExtractFileDir(FileName.ToWide()));
-end;
-
-function TFileSystemImpl.ExtractFileName(const FileName: IPath): IPath;
-begin
- Result := Path(WideExtractFileName(FileName.ToWide()));
-end;
-
-function TFileSystemImpl.ExtractFileExt(const FileName: IPath): IPath;
-begin
- Result := Path(WideExtractFileExt(FileName.ToWide()));
-end;
-
-function TFileSystemImpl.ExtractRelativePath(const BaseName: IPath; const FileName: IPath): IPath;
-begin
- Result := Path(WideExtractRelativePath(BaseName.ToWide(), FileName.ToWide()));
-end;
-
-function TFileSystemImpl.ChangeFileExt(const FileName: IPath; const Extension: IPath): IPath;
-begin
- Result := Path(WideChangeFileExt(FileName.ToWide(), Extension.ToWide()));
-end;
-
-function TFileSystemImpl.IncludeTrailingPathDelimiter(const FileName: IPath): IPath;
-begin
- Result := Path(WideIncludeTrailingPathDelimiter(FileName.ToWide()));
-end;
-
-function TFileSystemImpl.ExcludeTrailingPathDelimiter(const FileName: IPath): IPath;
-begin
- Result := Path(WideExcludeTrailingPathDelimiter(FileName.ToWide()));
-end;
-
-function TFileSystemImpl.FindFirst(const FilePattern: IPath; Attr: integer; var F: TSytemSearchRec): integer;
-begin
- Result := WideFindFirst(FilePattern.ToWide(), Attr, F);
-end;
-
-function TFileSystemImpl.FindNext(var F: TSytemSearchRec): integer;
-begin
- Result := WideFindNext(F);
-end;
-
-procedure TFileSystemImpl.FindClose(var F: TSytemSearchRec);
-begin
- WideFindClose(F);
-end;
-
-function TFileSystemImpl.GetCurrentDir: IPath;
-begin
- Result := Path(WideGetCurrentDir());
-end;
-
-function TFileSystemImpl.SetCurrentDir(const Dir: IPath): boolean;
-begin
- Result := WideSetCurrentDir(Dir.ToWide());
-end;
-
-{$ELSE} // UNIX
-
-function TFileSystemImpl.ExpandFileName(const FileName: IPath): IPath;
-begin
- Result := Path(SysUtils.ExpandFileName(FileName.ToNative()));
-end;
-
-function TFileSystemImpl.FileCreate(const FileName: IPath): THandle;
-begin
- Result := SysUtils.FileCreate(FileName.ToNative());
-end;
-
-function TFileSystemImpl.DirectoryCreate(const Dir: IPath): boolean;
-begin
- Result := SysUtils.CreateDir(Dir.ToNative());
-end;
-
-function TFileSystemImpl.FileOpen(const FileName: IPath; Mode: longword): THandle;
-begin
- Result := SysUtils.FileOpen(FileName.ToNative(), Mode);
-end;
-
-function TFileSystemImpl.FileAge(const FileName: IPath): integer;
-begin
- Result := SysUtils.FileAge(FileName.ToNative());
-end;
-
-function TFileSystemImpl.FileAge(const FileName: IPath; out FileDateTime: TDateTime): boolean;
-var
- FileDate: integer;
-begin
- FileDate := SysUtils.FileAge(FileName.ToNative());
- Result := (FileDate <> -1);
- if (Result) then
- FileDateTime := FileDateToDateTime(FileDate);
-end;
-
-function TFileSystemImpl.DirectoryExists(const Name: IPath): boolean;
-begin
- Result := SysUtils.DirectoryExists(Name.ToNative());
-end;
-
-function TFileSystemImpl.FileExists(const Name: IPath): boolean;
-begin
- Result := SysUtils.FileExists(Name.ToNative());
-end;
-
-function TFileSystemImpl.FileGetAttr(const FileName: IPath): Cardinal;
-begin
- Result := SysUtils.FileGetAttr(FileName.ToNative());
-end;
-
-function TFileSystemImpl.FileSetAttr(const FileName: IPath; Attr: integer): boolean;
-begin
- Result := (SysUtils.FileSetAttr(FileName.ToNative(), Attr) = 0);
-end;
-
-function TFileSystemImpl.FileIsReadOnly(const FileName: IPath): boolean;
-begin
- Result := SysUtils.FileIsReadOnly(FileName.ToNative());
-end;
-
-function TFileSystemImpl.FileSetReadOnly(const FileName: IPath; ReadOnly: boolean): boolean;
-begin
- Result := (SysUtils.FileSetAttr(FileName.ToNative(), faReadOnly) = 0);
-end;
-
-function TFileSystemImpl.ForceDirectories(const Dir: IPath): boolean;
-begin
- Result := SysUtils.ForceDirectories(Dir.ToNative());
-end;
-
-function TFileSystemImpl.FileSearch(const Name: IPath; DirList: array of IPath): IPath;
-var
- I: integer;
- DirListStr: AnsiString;
-begin
- DirListStr := '';
- for I := 0 to High(DirList) do
- begin
- if (I > 0) then
- DirListStr := DirListStr + PathSep;
- DirListStr := DirListStr + DirList[I].ToNative();
- end;
- Result := Path(SysUtils.FileSearch(Name.ToNative(), DirListStr));
-end;
-
-function TFileSystemImpl.RenameFile(const OldName, NewName: IPath): boolean;
-begin
- Result := SysUtils.RenameFile(OldName.ToNative(), NewName.ToNative());
-end;
-
-function TFileSystemImpl.DeleteFile(const FileName: IPath): boolean;
-begin
- Result := SysUtils.DeleteFile(FileName.ToNative());
-end;
-
-function TFileSystemImpl.RemoveDir(const Dir: IPath): boolean;
-begin
- Result := SysUtils.RemoveDir(Dir.ToNative());
-end;
-
-function TFileSystemImpl.CopyFile(const Source, Target: IPath; FailIfExists: boolean): boolean;
-const
- COPY_BUFFER_SIZE = 4096; // a good tradeoff between speed and memory consumption
-var
- SourceFile, TargetFile: TFileStream;
- FileCopyBuffer: array [0..COPY_BUFFER_SIZE-1] of byte; // temporary copy-buffer.
- NumberOfBytes: integer; // number of bytes read from SourceFile
-begin
- Result := false;
- SourceFile := nil;
- TargetFile := nil;
-
- // if overwrite is disabled return if the target file already exists
- if (FailIfExists and FileExists(Target)) then
- Exit;
-
- try
- try
- // open source and target file (might throw an exception on error)
- SourceFile := TFileStream.Create(Source.ToNative(), fmOpenRead);
- TargetFile := TFileStream.Create(Target.ToNative(), fmCreate or fmOpenWrite);
-
- while true do
- begin
- // read a block from the source file and check for errors or EOF
- NumberOfBytes := SourceFile.Read(FileCopyBuffer, SizeOf(FileCopyBuffer));
- if (NumberOfBytes <= 0) then
- Break;
- // write block to target file and check if everything was written
- if (TargetFile.Write(FileCopyBuffer, NumberOfBytes) <> NumberOfBytes) then
- Exit;
- end;
- except
- Exit;
- end;
- finally
- SourceFile.Free;
- TargetFile.Free;
- end;
-
- Result := true;
-end;
-
-function TFileSystemImpl.ExtractFileDrive(const FileName: IPath): IPath;
-begin
- Result := Path(SysUtils.ExtractFileDrive(FileName.ToNative()));
-end;
-
-function TFileSystemImpl.ExtractFilePath(const FileName: IPath): IPath;
-begin
- Result := Path(SysUtils.ExtractFilePath(FileName.ToNative()));
-end;
-
-function TFileSystemImpl.ExtractFileDir(const FileName: IPath): IPath;
-begin
- Result := Path(SysUtils.ExtractFileDir(FileName.ToNative()));
-end;
-
-function TFileSystemImpl.ExtractFileName(const FileName: IPath): IPath;
-begin
- Result := Path(SysUtils.ExtractFileName(FileName.ToNative()));
-end;
-
-function TFileSystemImpl.ExtractFileExt(const FileName: IPath): IPath;
-begin
- Result := Path(SysUtils.ExtractFileExt(FileName.ToNative()));
-end;
-
-function TFileSystemImpl.ExtractRelativePath(const BaseName: IPath; const FileName: IPath): IPath;
-begin
- Result := Path(SysUtils.ExtractRelativePath(BaseName.ToNative(), FileName.ToNative()));
-end;
-
-function TFileSystemImpl.ChangeFileExt(const FileName: IPath; const Extension: IPath): IPath;
-begin
- Result := Path(SysUtils.ChangeFileExt(FileName.ToNative(), Extension.ToNative()));
-end;
-
-function TFileSystemImpl.IncludeTrailingPathDelimiter(const FileName: IPath): IPath;
-begin
- Result := Path(SysUtils.IncludeTrailingPathDelimiter(FileName.ToNative()));
-end;
-
-function TFileSystemImpl.ExcludeTrailingPathDelimiter(const FileName: IPath): IPath;
-begin
- Result := Path(SysUtils.ExcludeTrailingPathDelimiter(FileName.ToNative()));
-end;
-
-function TFileSystemImpl.FindFirst(const FilePattern: IPath; Attr: integer; var F: TSytemSearchRec): integer;
-begin
- Result := SysUtils.FindFirst(FilePattern.ToNative(), Attr, F);
-end;
-
-function TFileSystemImpl.FindNext(var F: TSytemSearchRec): integer;
-begin
- Result := SysUtils.FindNext(F);
-end;
-
-procedure TFileSystemImpl.FindClose(var F: TSytemSearchRec);
-begin
- SysUtils.FindClose(F);
-end;
-
-function TFileSystemImpl.GetCurrentDir: IPath;
-begin
- Result := Path(SysUtils.GetCurrentDir());
-end;
-
-function TFileSystemImpl.SetCurrentDir(const Dir: IPath): boolean;
-begin
- Result := SysUtils.SetCurrentDir(Dir.ToNative());
-end;
-
-{$ENDIF}
-
-
-{ TFileIterator }
-
-constructor TFileIterator.Create(const FilePattern: IPath; Attr: integer);
-begin
- inherited Create();
- fHasNext := (FileSystem.FindFirst(FilePattern, Attr, fSearchRec) = 0);
-end;
-
-destructor TFileIterator.Destroy();
-begin
- FileSystem.FindClose(fSearchRec);
- inherited;
-end;
-
-function TFileIterator.HasNext(): boolean;
-begin
- Result := fHasNext;
-end;
-
-function TFileIterator.Next(): TFileInfo;
-begin
- if (not fHasNext) then
- begin
- // Note: do not use FillChar() on records with ref-counted fields
- Result.Time := 0;
- Result.Size := 0;
- Result.Attr := 0;
- Result.Name := nil;
- Exit;
- end;
-
- Result.Time := fSearchRec.Time;
- Result.Size := fSearchRec.Size;
- Result.Attr := fSearchRec.Attr;
- Result.Name := Path(fSearchRec.Name);
-
- // fetch next entry
- fHasNext := (FileSystem.FindNext(fSearchRec) = 0);
-end;
-
-
-initialization
- FileSystem_Singleton := TFileSystemImpl.Create;
-
-finalization
- FileSystem_Singleton := nil;
-
-end.