函数及测试代码(分别在 Delphi 2007 和 Delphi 2009 下测试通过):
unit Unit1;interfaceuses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls;type TForm1 = class(TForm) Button1: TButton; Button2: TButton; Button3: TButton; Button4: TButton; procedure Button1Click(Sender: TObject); procedure Button2Click(Sender: TObject); procedure Button3Click(Sender: TObject); procedure Button4Click(Sender: TObject); end;var Form1: TForm1;implementation{$R *.dfm}uses ActiveX, Zlib; {函数用到的单元}{把指定文件夹下的文件保存到一个复合文件}function Dir2Doc(SourcePath, DestFile: string): Boolean;const Mode = STGM_CREATE or STGM_WRITE or STGM_SHARE_EXCLUSIVE;var sr: TSearchRec; Stg: IStorage; Stm: IStream; ms: TMemoryStream;begin Result := False; SourcePath := ExcludeTrailingPathDelimiter(SourcePath); {去掉最后一个 '\'} if not DirectoryExists(SourcePath) then Exit; {如果源路径不存在则退出} if not DirectoryExists(ExtractFileDir(DestFile)) then {假如目标目录不存在} if not ForceDirectories(ExtractFileDir(DestFile)) then Exit; {就创建, 若创建失败退出.} {如果目标路径不存在则退出} StgCreateDocfile(PWideChar(WideString(DestFile)), Mode, 0, Stg); {建立复合文件根路径} if FindFirst(SourcePath + '\*.*', faAnyFile, sr) = 0 then begin repeat if sr.Name[1] = '.' then Continue; {如果是'.' 或 '..' (当前目录或上层目录)则忽略} if (sr.Attr and faDirectory) <> faDirectory then begin Stg.CreateStream(PWideChar(WideString(sr.Name)), Mode, 0, 0, Stm); ms := TMemoryStream.Create; ms.LoadFromFile(SourcePath + '\' + sr.Name); ms.Position := 0; Stm.Write(ms.Memory, ms.Size, nil); ms.Free; end; until (FindNext(sr) <> 0); end; Result := True;end;{上一个 Dir2Doc 函数的反操作}function Doc2Dir(SourceFile, DestPath: string): Boolean;const Mode = STGM_READ or STGM_SHARE_EXCLUSIVE;var Stg: IStorage; Stm: IStream; StatStg: TStatStg; EnumStatStg: IEnumStatStg; ms: TMemoryStream; i: Integer;begin Result := False; if not FileExists(SourceFile) then Exit; {如果文件不存在退出} if not DirectoryExists(DestPath) then {如果目标目录不存在} if not ForceDirectories(DestPath) then Exit; {就创建, 若创建失败退出} DestPath := ExcludeTrailingPathDelimiter(DestPath); {去掉最后一个 '\'} StgOpenStorage(PWideChar(WideString(SourceFile)), nil, Mode, nil, 0, Stg); Stg.EnumElements(0, nil, 0, EnumStatStg); while True do begin EnumStatStg.Next(1, StatStg, @i); if (i = 0) or (StatStg.dwType = 1) then Break; {dwType = 1 时是文件夹} Stg.OpenStream(StatStg.pwcsName, nil, Mode, 0, Stm); ms := TMemoryStream.Create; ms.SetSize(StatStg.cbSize); Stm.Read(ms.Memory, ms.Size, nil); ms.SaveToFile(DestPath + '\' + StatStg.pwcsName); ms.Free; end; Result := True;end;{把指定文件夹下的文件压缩到一个复合文件}function ZipDir2Doc(SourcePath, DestFile: string): Boolean;const Mode = STGM_CREATE or STGM_WRITE or STGM_SHARE_EXCLUSIVE;var sr: TSearchRec; Stg: IStorage; Stm: IStream; ms1,ms2: TMemoryStream; zip: TCompressionStream; num: Int64;begin Result := False; SourcePath := ExcludeTrailingPathDelimiter(SourcePath); {去掉最后一个 '\'} if not DirectoryExists(SourcePath) then Exit; {如果源路径不存在则退出} if not DirectoryExists(ExtractFileDir(DestFile)) then {假如目标目录不存在} if not ForceDirectories(ExtractFileDir(DestFile)) then Exit; {就创建, 若创建失败退出.} StgCreateDocfile(PWideChar(WideString(DestFile)), Mode, 0, Stg); {建立复合文件根路径} if FindFirst(SourcePath + '\*.*', faAnyFile, sr) = 0 then begin repeat if sr.Name[1] = '.' then Continue; {如果是'.' 或 '..' (当前目录或上层目录)则忽略} if (sr.Attr and faDirectory) <> faDirectory then begin Stg.CreateStream(PWideChar(WideString(sr.Name)), Mode, 0, 0, Stm); ms1 := TMemoryStream.Create; ms2 := TMemoryStream.Create; ms1.LoadFromFile(SourcePath + '\' + sr.Name); num := ms1.Size; ms2.Write(num, SizeOf(num)); zip := TCompressionStream.Create(clMax, ms2); ms1.SaveToStream(zip); zip.Free; ms2.Position := 0; Stm.Write(ms2.Memory, ms2.Size, nil); ms1.Free; ms2.Free; end; until (FindNext(sr) <> 0); end; Result := True;end;{上一个 ZipDir2Doc 函数的反操作}function UnZipDoc2Dir(SourceFile, DestPath: string): Boolean;const Mode = STGM_READ or STGM_SHARE_EXCLUSIVE;var Stg: IStorage; Stm: IStream; StatStg: TStatStg; EnumStatStg: IEnumStatStg; ms1,ms2: TMemoryStream; i: Integer; num: Int64; UnZip: TDecompressionStream;begin Result := False; if not FileExists(SourceFile) then Exit; {如果文件不存在退出} if not DirectoryExists(DestPath) then {如果目标目录不存在} if not ForceDirectories(DestPath) then Exit; {就创建, 若创建失败退出} DestPath := ExcludeTrailingPathDelimiter(DestPath); {去掉最后一个 '\'} StgOpenStorage(PWideChar(WideString(SourceFile)), nil, Mode, nil, 0, Stg); Stg.EnumElements(0, nil, 0, EnumStatStg); while True do begin EnumStatStg.Next(1, StatStg, @i); if (i = 0) or (StatStg.dwType = 1) then Break; {dwType = 1 时是文件夹} Stg.OpenStream(StatStg.pwcsName, nil, Mode, 0, Stm); ms1 := TMemoryStream.Create; ms1.SetSize(StatStg.cbSize); Stm.Read(ms1.Memory, ms1.Size, nil); ms1.Position := 0; ms1.ReadBuffer(num, SizeOf(num)); ms2 := TMemoryStream.Create; ms2.SetSize(num); UnZip := TDecompressionStream.Create(ms1); ms2.Position := 0; UnZip.Read(ms2.Memory^, num); UnZip.Free; ms2.SaveToFile(DestPath + '\' + StatStg.pwcsName); ms1.Free; ms2.Free; end; Result := True;end;{测试 Dir2Doc}procedure TForm1.Button1Click(Sender: TObject);const TestPath = 'C:\Documents and Settings\All Users\Documents\My Pictures\示例图片'; TestFile = 'C:\Temp\pic1.dat';begin if Dir2Doc(TestPath, TestFile) then ShowMessage('ok');end;{测试 Doc2Dir}procedure TForm1.Button2Click(Sender: TObject);const TestPath = 'C:\Temp\pic1'; TestFile = 'C:\Temp\pic1.dat';begin if Doc2Dir(TestFile, TestPath) then ShowMessage('ok');end;{测试 ZipDir2Doc}procedure TForm1.Button3Click(Sender: TObject);const TestPath = 'C:\Documents and Settings\All Users\Documents\My Pictures\示例图片'; TestFile = 'C:\Temp\pic2.dat';begin if ZipDir2Doc(TestPath, TestFile) then ShowMessage('ok');end;{测试 UnZipDoc2Dir}procedure TForm1.Button4Click(Sender: TObject);const TestPath = 'C:\Temp\pic2'; TestFile = 'C:\Temp\pic2.dat';begin if UnZipDoc2Dir(TestFile, TestPath) then ShowMessage('ok');end;end.