/// <summary>
/// Create a new <see cref="ZipFile"/> whose data will be stored on a stream.
/// </summary>
/// <param name="outStream">The stream providing data storage.</param>
/// <returns>Returns the newly created <see cref="ZipFile"/></returns>
public static ZipFile Create(Stream outStream)
{
if ( outStream == null ) {
throw new ArgumentNullException("outStream");
}
if ( !outStream.CanWrite ) {
throw new ArgumentException("Stream is not writeable", "outStream");
}
if ( !outStream.CanSeek ) {
throw new ArgumentException("Stream is not seekable", "outStream");
}
ZipFile result = new ZipFile();
result.baseStream_ = outStream;
return result;
}
/// <summary>
/// Extract the contents of a zip file.
/// </summary>
/// <param name="zipFileName">The zip file 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 wether to restore the date and time for extracted files.</param>
public void ExtractZip(string zipFileName, string targetDirectory,
Overwrite overwrite, ConfirmOverwriteDelegate confirmDelegate,
string fileFilter, string directoryFilter, bool restoreDateTime)
{
if ((overwrite == Overwrite.Prompt) && (confirmDelegate == null))
{
throw new ArgumentNullException("confirmDelegate");
}
continueRunning_ = true;
overwrite_ = overwrite;
confirmDelegate_ = confirmDelegate;
targetDirectory_ = targetDirectory;
fileFilter_ = new NameFilter(fileFilter);
directoryFilter_ = new NameFilter(directoryFilter);
restoreDateTimeOnExtract_ = restoreDateTime;
using (zipFile_ = new ZipFile(zipFileName))
{
#if !NETCF_1_0
if (password_ != null)
{
zipFile_.Password = password_;
}
#endif
System.Collections.IEnumerator enumerator = zipFile_.GetEnumerator();
int index = 0;
while (continueRunning_ && enumerator.MoveNext())
{
ZipEntry entry = (ZipEntry)enumerator.Current;
if (entry.IsFile)
{
if (directoryFilter_.IsMatch(Path.GetDirectoryName(entry.Name)) && fileFilter_.IsMatch(entry.Name))
{
if (events_ == null || events_.OnProcessFile(entry.Name))
{
ExtractEntry(entry);
}
}
}
else if (entry.IsDirectory)
{
if (directoryFilter_.IsMatch(entry.Name) && CreateEmptyDirectories)
{
if (events_ == null || events_.OnProcessDirectory(entry.Name, true))
{
ExtractEntry(entry);
}
}
}
else
{
// Do nothing for volume labels etc...
}
if (events_.TotalProgress != null)
events_.TotalProgress(this, new ProgressEventArgs(entry.Name, ++index, zipFile_.Count));
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="DiskArchiveStorage"/> class.
/// </summary>
/// <param name="file">The file.</param>
public DiskArchiveStorage(ZipFile file)
: this(file, FileUpdateMode.Safe)
{
}
/// <summary>
/// Create a new <see cref="ZipFile"/> whose data will be stored in a file.
/// </summary>
/// <param name="fileName">The name of the archive to create.</param>
/// <returns>Returns the newly created <see cref="ZipFile"/></returns>
public static ZipFile Create(string fileName)
{
if ( fileName == null ) {
throw new ArgumentNullException("fileName");
}
FileStream fs = File.Create(fileName);
ZipFile result = new ZipFile();
result.name_ = fileName;
result.baseStream_ = fs;
result.isStreamOwner = true;
return result;
}
void CopyEntry(ZipFile workFile, ZipUpdate update)
{
workFile.WriteLocalEntryHeader(update);
if ( update.Entry.CompressedSize > 0 ) {
const int NameLengthOffset = 26;
long entryDataOffset = update.Entry.Offset + NameLengthOffset;
// TODO: This wont work for SFX files!
baseStream_.Seek(entryDataOffset, SeekOrigin.Begin);
uint nameLength = ReadLEUshort();
uint extraLength = ReadLEUshort();
baseStream_.Seek(nameLength + extraLength, SeekOrigin.Current);
CopyBytes(update, workFile.baseStream_, baseStream_, update.Entry.CompressedSize, false);
}
CopyDescriptorBytes(update, workFile.baseStream_, baseStream_);
}
/// <summary>
/// Initializes a new instance of the <see cref="DiskArchiveStorage"/> class.
/// </summary>
/// <param name="file">The file.</param>
/// <param name="updateMode">The update mode.</param>
public DiskArchiveStorage(ZipFile file, FileUpdateMode updateMode)
: base(updateMode)
{
if ( file.Name == null ) {
throw new ZipException("Cant handle non file archives");
}
fileName_ = file.Name;
}
void CopyEntryDirect(ZipFile workFile, ZipUpdate update, ref long destinationPosition)
{
bool skipOver = false;
if ( update.Entry.Offset == destinationPosition ) {
skipOver = true;
}
if ( !skipOver ) {
baseStream_.Position = destinationPosition;
workFile.WriteLocalEntryHeader(update);
destinationPosition = baseStream_.Position;
}
long sourcePosition = 0;
const int NameLengthOffset = 26;
// TODO: Add base for SFX friendly handling
long entryDataOffset = update.Entry.Offset + NameLengthOffset;
baseStream_.Seek(entryDataOffset, SeekOrigin.Begin);
// Clumsy way of handling retrieving the original name and extra data length for now.
// TODO: Stop re-reading name and data length in CopyEntryDirect.
uint nameLength = ReadLEUshort();
uint extraLength = ReadLEUshort();
sourcePosition = baseStream_.Position + nameLength + extraLength;
if ( skipOver ) {
destinationPosition +=
(sourcePosition - entryDataOffset) + NameLengthOffset + // Header size
update.Entry.CompressedSize + GetDescriptorSize(update);
}
else {
if ( update.Entry.CompressedSize > 0 ) {
CopyEntryDataDirect(update, baseStream_, false, ref destinationPosition, ref sourcePosition );
}
CopyDescriptorBytesDirect(update, baseStream_, ref destinationPosition, sourcePosition);
}
}
void ModifyEntry(ZipFile workFile, ZipUpdate update)
{
workFile.WriteLocalEntryHeader(update);
long dataStart = workFile.baseStream_.Position;
// TODO: This is slow if the changes don't effect the data!!
if ( update.Entry.IsFile && (update.Filename != null) ) {
using ( Stream output = workFile.GetOutputStream(update.OutEntry) ) {
using ( Stream source = this.GetInputStream(update.Entry) ) {
CopyBytes(update, output, source, source.Length, true);
}
}
}
long dataEnd = workFile.baseStream_.Position;
update.Entry.CompressedSize = dataEnd - dataStart;
}
void AddEntry(ZipFile workFile, ZipUpdate update)
{
Stream source = null;
if ( update.Entry.IsFile ) {
source = update.GetSource();
if ( source == null ) {
source = updateDataSource_.GetSource(update.Entry, update.Filename);
}
}
if ( source != null ) {
using ( source ) {
long sourceStreamLength = source.Length;
if ( update.OutEntry.Size < 0 ) {
update.OutEntry.Size = sourceStreamLength;
}
else {
// Check for errant entries.
if ( update.OutEntry.Size != sourceStreamLength ) {
throw new ZipException("Entry size/stream size mismatch");
}
}
workFile.WriteLocalEntryHeader(update);
long dataStart = workFile.baseStream_.Position;
using ( Stream output = workFile.GetOutputStream(update.OutEntry) ) {
CopyBytes(update, output, source, sourceStreamLength, true);
}
long dataEnd = workFile.baseStream_.Position;
update.OutEntry.CompressedSize = dataEnd - dataStart;
if ((update.OutEntry.Flags & (int)GeneralBitFlags.Descriptor) == (int)GeneralBitFlags.Descriptor)
{
ZipHelperStream helper = new ZipHelperStream(workFile.baseStream_);
helper.WriteDataDescriptor(update.OutEntry);
}
}
}
else {
workFile.WriteLocalEntryHeader(update);
update.OutEntry.CompressedSize = 0;
}
}
/// <summary>
/// Initialise a new instance of <see cref="TestStatus"/>
/// </summary>
/// <param name="file">The <see cref="ZipFile"/> this status applies to.</param>
public TestStatus(ZipFile file)
{
file_ = file;
}
/// <summary>
/// Extract the contents of a zip file.
/// </summary>
/// <param name="zipFileName">The zip file 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 wether to restore the date and time for extracted files.</param>
public void ExtractZip(string zipFileName, string targetDirectory,
Overwrite overwrite, ConfirmOverwriteDelegate confirmDelegate,
string fileFilter, string directoryFilter, bool restoreDateTime)
{
if ((overwrite == Overwrite.Prompt) && (confirmDelegate == null))
{
throw new ArgumentNullException("confirmDelegate");
}
continueRunning = true;
this.overwrite = overwrite;
this.confirmDelegate = confirmDelegate;
this.targetDirectory = targetDirectory;
this.fileFilter = new NameFilter(fileFilter);
this.directoryFilter = new NameFilter(directoryFilter);
restoreDateTimeOnExtract = restoreDateTime;
using (zipFile = new ZipFile(zipFileName))
{
#if !NETCF_1_0
if (password != null)
{
zipFile.Password = password;
}
#endif
IEnumerator enumerator = zipFile.GetEnumerator();
while (continueRunning && enumerator.MoveNext())
{
var entry = (ZipEntry) enumerator.Current;
if (entry.IsFile)
{
if (this.directoryFilter.IsMatch(Path.GetDirectoryName(entry.Name)) &&
this.fileFilter.IsMatch(entry.Name))
{
if (events == null || events.OnProcessFile(entry.Name))
{
ExtractEntry(entry);
}
}
}
else if (entry.IsDirectory)
{
if (this.directoryFilter.IsMatch(entry.Name) && CreateEmptyDirectories)
{
if (events == null || events.OnProcessDirectory(entry.Name, true))
{
ExtractEntry(entry);
}
}
}
}
}
}
