smartfilecopy.pas

wbs43open-src.zip 数字隐藏工具

unit SmartFileCopy;

interface

  uses classes, sysutils;

  function SmartCopyFile(FromFile: String; ToFile: String): Integer;
  function SmartCreateDir(Dir: String): Integer;

implementation

  function SmartCopyFile(FromFile: String; ToFile: String): Integer;
  var
    InFileStream:       TFileStream;
    OutFileStream:      TFileStream;
  begin
    SmartCopyFile:=99;
    if not(FileExists(FromFile)) then SmartCopyFile:=1
    else begin
      try
        InFileStream:=TFileStream.Create(FromFile,fmOpenRead);
        OutFileStream:=TFileStream.Create(ToFile,fmCreate);
        InFileStream.Seek(0,soFromBeginning);
        OutFileStream.CopyFrom(InFileStream,InFileStream.Size);
        SmartCopyFile:=0;
      finally
        InFileStream.Free;
        OutFileStream.Free;
      end;
    end;
  end;

  function SmartCreateDir(Dir: String): Integer;
  var
    Levels:     TStrings;
    slash:      Integer;
    lower:      String;
    i,j:        Integer;
  begin
    SmartCreateDir:=99;
    {$I-}
    MkDir(Dir);
    {$I+}
    if IOResult<>0 then begin
      {$I-}
      ChDir(Dir);
      {$I+}
      if IOResult<>0 then begin
        // split directory
        Levels:=TStringList.Create;
        lower:=Dir;
        repeat
          slash:=Pos('\',lower);
          if slash>0 then begin
            Levels.Add(Copy(lower,1,slash-1));
            lower:=Copy(lower,slash+1,Length(lower)-slash);
          end;
        until slash=0;
        Levels.Add(lower);
        if Levels.Count>0 then begin
          for i:=0 to Levels.Count-1 do begin
            lower:='';
            for j:=0 to i do lower:=lower+Levels.Strings[j]+'\';
            lower:=Copy(lower,1,Length(Lower)-1);
            if i=Levels.Count-1 then begin
              {$I-}
              MkDir(lower);
              {$I+}
              SmartCreateDir:=0;
            end
            else begin
              {$I-}
              MkDir(lower);
              {$I+}
            end;
          end;
        end
        else SmartCreateDir:=2;
        Levels.Free;
      end
      else SmartCreateDir:=1;
    end
    else SmartCreateDir:=0;
  end;

end.