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66 lines
2.2 KiB
ObjectPascal
66 lines
2.2 KiB
ObjectPascal
{
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/***************************************************************************
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AbstractFileSystem.pp
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-------------------
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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}
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unit AbstractFileSystem;
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{$mode objfpc}
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interface
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uses
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classes;
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type
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TFilename : String;
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{ TAbstractFileSystem
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FileAge -- Returns the date/time of the file in a longint.
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GetFileStream -- Creates and returns a TStream for the Filename
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passed into it.
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RenameFile -- Renames a file. Returns TRUE is successful
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IsReadOnly -- Returns TRUE if file is READONLY.
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DeleteFile -- Returns TRUE if successful;
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FileExists -- Returns TRUE if the file exists
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GetBackupFileName -- Returns a string which represents the backup name for
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the filename passed into the function. It uses the
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name passed into it to calculate the backup name.
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}
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TAbstractFileSystem = class
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public
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Function FileAge(const Filename : TFilename) : Longint; virtual; abstract;
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Function GetFileStream(const Filename : TFilename; Mode : Integer): TStream; virtual; abstract;
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Function RenameFile(const Oldname, Newname : TFilename): Boolean; virtual; abstract;
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Function IsReadOnly(const Filename : TFilename): Boolean; virtual; abstract;
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Function DeleteFile(const Filename : TFilename): Boolean; virtual; abstract;
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Function FileExists(const Filename : TFilename) : Boolean; virtual; abstract
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Function GetBackupFileName(const Filename : TFilename): TFilename; virtual; abstract;
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end;
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implementation
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end.
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