/// <summary>
/// Extract the contents of a zip file held in a stream.
/// </summary>
/// <param name="inputStream">The seekable input stream containing the zip to extract from.</param>
/// <param name="targetDirectory">The directory to save extracted information in.</param>
/// <param name="overwrite">The style of <see cref="Overwrite">overwriting</see> to apply.</param>
/// <param name="confirmDelegate">A delegate to invoke when confirming overwriting.</param>
/// <param name="fileFilter">A filter to apply to files.</param>
/// <param name="directoryFilter">A filter to apply to directories.</param>
/// <param name="restoreDateTime">Flag indicating whether to restore the date and time for extracted files.</param>
/// <param name="isStreamOwner">Flag indicating whether the inputStream will be closed by this method.</param>
public void ExtractZip(Stream inputStream, string targetDirectory,
Overwrite overwrite, ConfirmOverwriteDelegate confirmDelegate,
string fileFilter, string directoryFilter, bool restoreDateTime,
bool isStreamOwner)
{
if ((overwrite == Overwrite.Prompt) && (confirmDelegate == null)) {
throw new ArgumentNullException("confirmDelegate");
}
continueRunning_ = true;
overwrite_ = overwrite;
confirmDelegate_ = confirmDelegate;
extractNameTransform_ = new WindowsNameTransform(targetDirectory);
fileFilter_ = new NameFilter(fileFilter);
directoryFilter_ = new NameFilter(directoryFilter);
restoreDateTimeOnExtract_ = restoreDateTime;
using (zipFile_ = new ZipFile(inputStream)) {
#if !NETCF_1_0
if (password_ != null) {
zipFile_.Password = password_;
}
#endif
zipFile_.IsStreamOwner = isStreamOwner;
var enumerator = zipFile_.GetEnumerator();
while (continueRunning_ && enumerator.MoveNext()) {
var entry = (ZipEntry)enumerator.Current;
if (entry.IsFile)
{
// TODO Path.GetDirectory can fail here on invalid characters.
if (directoryFilter_.IsMatch(Path.GetDirectoryName(entry.Name)) && fileFilter_.IsMatch(entry.Name)) {
ExtractEntry(entry);
}
}
else if (entry.IsDirectory) {
if (directoryFilter_.IsMatch(entry.Name) && CreateEmptyDirectories) {
ExtractEntry(entry);
}
}
else {
// Do nothing for volume labels etc...
}
}
}
}
/// <summary>
/// Extracts the specified zip file stream.
/// </summary>
/// <param name="fileStream">The zip file stream.</param>
/// <returns></returns>
public bool Extract(Stream fileStream) {
if (null == fileStream) return false;
CleanFromTemp();
NewTempPath();
_isValid = true;
ZipFile zipFile = null;
try {
zipFile = new ZipFile(fileStream);
var enumerator = zipFile.GetEnumerator();
while (enumerator.MoveNext()) {
var entry = (ZipEntry)enumerator.Current;
ExtractZipEntry(zipFile, entry);
}
} catch (Exception ex) {
_isValid = false;
_exceptionMessage = ex.Message;
CleanFromTemp();
} finally {
fileStream.Close();
if (null != zipFile) zipFile.Close();
}
return _isValid ? CheckFolderTree() : false;
}