ZIP Archive classes

The classes can enumerate the compressed files stored inside a ZIP file and extract the files one by one. There is nothing really magic about this, because it uses the ZLIB library maintained by Jean-loup Gailly and Mark Adler.

The CZipArchive class gives access to the compressed entries through the GetFile() methods. The uncompressed data is returned in a CZipFile class that can be used as a memory stream.
To enumerate the entries in the ZIP use the FindFirstFile(), FindNextFile() and FindClose() methods. They operate exactly like the Win32 API FindFile counterparts.
The classes cannot compress data, delete, overwrite or add new entries to the ZIP file. It does however support compressed and encrypted ZIP 2.0 files.

So, to open and use a ZIP file, use the following syntax:

  CZipArchive zip;
  zip.Open(_T("test.zip"));
  ...
  zip.Close();

  CZipFile file;
  if( zip.GetFile(_T("readme.txt"), &file) == TRUE ) {
    DWORD dwSize = file.GetSize();
    LPSTR pStr = (LPSTR) _alloca(dwSize);
    file.Read(pStr, dwSize, NULL);
    file.Close();
  }

  ZIP_FIND_DATA fd;
  HANDLE hFD = zip.FindFirstFile(_T("*.*"), &fd);
  if( hFD != INVALID_HANDLE_VALUE ) {
    while( true ) {
      printf(_T("%s"), fd.cFileName);
      if( zip.FindNextFile(hFD, &fd) == FALSE ) break;
    }
    zip.FindClose(hFD);
  }

Interface

	Name	Description
	Open	Opens a ZIP archive.
	Close	Closes the archive.
	GetFile	Extracts a file entry.
	SetPassword	Set password to use on encrypted files.
	FindFirstFile	Enumerates files in ZIP.
	FinNextFile	Gets the next file in FindFirstFile enumeration.
	FindClose	Closes the find enumeration.

Notes

Source Code Dependencies

Useful Links

Download Files

Source Code (6 Kb) ZLIB files (100 Kb)