public static void ExtractZipFile(string archiveFilenameIn, string password, string outFolder)
{
ZipFile zf = null;
try
{
FileStream fs = SafeFile.OpenRead(archiveFilenameIn);
zf = new ZipFile(fs);
if (!String.IsNullOrEmpty(password))
{
zf.Password = password; // AES encrypted entries are handled automatically
}
foreach (ZipEntry zipEntry in zf)
{
if (!zipEntry.IsFile)
{
continue; // Ignore directories
}
String entryFileName = zipEntry.Name;
// to remove the folder from the entry:- entryFileName = Path.GetFileName(entryFileName);
// Optionally match entrynames against a selection list here to skip as desired.
// The unpacked length is available in the zipEntry.Size property.
byte[] buffer = new byte[4096]; // 4K is optimum
Stream zipStream = zf.GetInputStream(zipEntry);
// Manipulate the output filename here as desired.
String fullZipToPath = Path.Combine(outFolder, entryFileName);
string directoryName = Path.GetDirectoryName(fullZipToPath);
if (directoryName.Length > 0)
{
SafeDirectory.CreateDirectory(directoryName);
}
// Unzip file in buffered chunks. This is just as fast as unpacking to a buffer the full size
// of the file, but does not waste memory.
// The "using" will close the stream even if an exception occurs.
using (FileStream streamWriter = SafeFile.Create(fullZipToPath))
{
StreamUtils.Copy(zipStream, streamWriter, buffer);
}
}
}
finally
{
if (zf != null)
{
zf.IsStreamOwner = true; // Makes close also shut the underlying stream
zf.Close(); // Ensure we release resources
}
}
}
public static void CreateSample(string outPathname, string password, List <String> contents)
{
FileStream fsOut = SafeFile.Create(outPathname);
ZipOutputStream zipStream = new ZipOutputStream(fsOut);
zipStream.SetLevel(3); //0-9, 9 being the highest level of compression
zipStream.Password = password; // optional. Null is the same as not setting.
foreach (string filename in contents)
{
string entryName = ZipEntry.CleanName(filename); // Removes drive from name and fixes slash direction
ZipEntry newEntry = new ZipEntry(entryName);
newEntry.DateTime = DateTime.Now;
// Specifying the AESKeySize triggers AES encryption. Allowable values are 0 (off), 128 or 256.
// newEntry.AESKeySize = 256;
// To permit the zip to be unpacked by built-in extractor in WinXP and Server2003, WinZip 8, Java, and other older code,
// you need to do one of the following: Specify UseZip64.Off, or set the Size.
// If the file may be bigger than 4GB, or you do not need WinXP built-in compatibility, you do not need either,
// but the zip will be in Zip64 format which not all utilities can understand.
// zipStream.UseZip64 = UseZip64.Off;
zipStream.UseZip64 = UseZip64.Off;
zipStream.PutNextEntry(newEntry);
// Zip the file in buffered chunks
// the "using" will close the stream even if an exception occurs
byte[] buffer = new byte[4096];
using (FileStream streamReader = SafeFile.OpenRead(filename))
{
StreamUtils.Copy(streamReader, zipStream, buffer);
}
zipStream.CloseEntry();
}
zipStream.IsStreamOwner = true; // Makes the Close also Close the underlying stream
zipStream.Close();
}