doublecmd/uclassesex.pas

{
   Double commander
   -------------------------------------------------------------------------
   This module contains classes with UTF8 file names support.

   Copyright (C) 2008-2009  Koblov Alexander (Alexx2000@mail.ru)

   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; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

}

unit uClassesEx;

{$mode objfpc}{$H+}

interface

uses
  Classes, RtlConsts, SysUtils, IniFiles;

type
  { TFileStreamEx class }

  TFileStreamEx = class(THandleStream)
  private
    FHandle: THandle;
    FFileName: UTF8String;
  public
    constructor Create(const AFileName: UTF8String; Mode: Word);
    destructor Destroy; override;
    property FileName : UTF8String read FFileName;
  end; 

  { TStringListEx }

  TStringListEx = class(TStringList)
  public
    procedure LoadFromFile(const FileName: String); override;
    procedure SaveToFile(const FileName: String); override;
  end;   
  
  { TIniFileEx }

  TIniFileEx = class(TIniFile)
  private
    FIniFileStream: TFileStreamEx;
  public
    constructor Create(const AFileName: String; Mode: Word = fmOpenReadWrite);
    destructor Destroy; override;
    procedure UpdateFile; override;
  end;  
  
implementation

uses uOSUtils;

{ TFileStreamEx}

constructor TFileStreamEx.Create(const AFileName: UTF8String; Mode: Word);
begin
  if Mode = fmCreate then
    begin
      FHandle:= mbFileCreate(AFileName);
      if FHandle = InvalidHandleValue then
        raise EFCreateError.CreateFmt(SFCreateError, [AFileName])
      else
        inherited Create(FHandle);	  
    end
  else
    begin 
      FHandle:= mbFileOpen(AFileName, Mode);
      if FHandle = InvalidHandleValue then
        raise EFOpenError.CreateFmt(SFOpenError, [AFilename])
      else
        inherited Create(FHandle);	  
    end;
  FFileName:= AFileName;
end;

destructor TFileStreamEx.Destroy;
begin
  if FHandle >= 0 then FileClose(FHandle);
  inherited Destroy;
end;

{ TStringListEx }

procedure TStringListEx.LoadFromFile(const FileName: String);
var
  fsFileStream: TFileStreamEx;
begin
  fsFileStream:= TFileStreamEx.Create(FileName, fmOpenRead);
  LoadFromStream(fsFileStream);
  fsFileStream.Free;
end;

procedure TStringListEx.SaveToFile(const FileName: String);
var
  fsFileStream: TFileStreamEx;
begin
  if mbFileExists(FileName) then
    begin
      fsFileStream:= TFileStreamEx.Create(FileName, fmOpenWrite or fmShareDenyNone);
      fsFileStream.Position:= 0;
      fsFileStream.Size:= 0;
    end
  else
    fsFileStream:= TFileStreamEx.Create(FileName, fmCreate);

  SaveToStream(fsFileStream);
  fsFileStream.Free;
end;

{ TIniFileEx }

constructor TIniFileEx.Create(const AFileName: String; Mode: Word);
begin
  if mbFileExists(AFileName) then
    FIniFileStream:= TFileStreamEx.Create(AFileName, Mode or fmShareDenyNone)
  else
    FIniFileStream:= TFileStreamEx.Create(AFileName, fmCreate);
  inherited Create(FIniFileStream);
end; 

procedure TIniFileEx.UpdateFile;
begin
  Stream.Position:=0;
  Stream.Size:= 0;
  inherited UpdateFile;
end; 

destructor TIniFileEx.Destroy;
begin
  FreeAndNil(FIniFileStream);
  inherited Destroy;
end;

end.