protected override void Dispose(bool disposing)
{
if (this._disposed)
{
return;
}
if (disposing && !this._exceptionPending)
{
this._FinishCurrentEntry();
this._directoryNeededZip64 = ZipOutput.WriteCentralDirectoryStructure(this._outputStream, this._entriesWritten.Values, 1u, this._zip64, this.Comment, new ZipContainer(this));
CountingStream countingStream = this._outputStream as CountingStream;
Stream stream;
if (countingStream != null)
{
stream = countingStream.WrappedStream;
countingStream.Dispose();
}
else
{
stream = this._outputStream;
}
if (!this._leaveUnderlyingStreamOpen)
{
stream.Dispose();
}
this._outputStream = null;
}
this._disposed = true;
}
public static bool WriteCentralDirectoryStructure(Stream s, ICollection <ZipEntry> entries, uint numSegments, Zip64Option zip64, string comment, ZipContainer container)
{
ZipSegmentedStream zipSegmentedStream = s as ZipSegmentedStream;
if (zipSegmentedStream != null)
{
zipSegmentedStream.ContiguousWrite = true;
}
long num = 0L;
using (MemoryStream memoryStream = new MemoryStream())
{
foreach (ZipEntry current in entries)
{
if (current.IncludedInMostRecentSave)
{
current.WriteCentralDirectoryEntry(memoryStream);
}
}
byte[] array = memoryStream.ToArray();
s.Write(array, 0, array.Length);
num = (long)array.Length;
}
CountingStream countingStream = s as CountingStream;
long num2 = (countingStream == null) ? s.Position : countingStream.ComputedPosition;
long num3 = num2 - num;
uint num4 = (zipSegmentedStream == null) ? 0u : zipSegmentedStream.CurrentSegment;
long num5 = num2 - num3;
int num6 = ZipOutput.CountEntries(entries);
bool flag = zip64 == Zip64Option.Always || num6 >= 65535 || num5 > (long)((ulong)-1) || num3 > (long)((ulong)-1);
byte[] array3;
if (flag)
{
if (zip64 == Zip64Option.Default)
{
StackFrame stackFrame = new StackFrame(1);
if (stackFrame.GetMethod().DeclaringType == typeof(ZipFile))
{
throw new ZipException("The archive requires a ZIP64 Central Directory. Consider setting the ZipFile.UseZip64WhenSaving property.");
}
throw new ZipException("The archive requires a ZIP64 Central Directory. Consider setting the ZipOutputStream.EnableZip64 property.");
}
else
{
byte[] array2 = ZipOutput.GenZip64EndOfCentralDirectory(num3, num2, num6, numSegments);
array3 = ZipOutput.GenCentralDirectoryFooter(num3, num2, zip64, num6, comment, container);
if (num4 != 0u)
{
uint value = zipSegmentedStream.ComputeSegment(array2.Length + array3.Length);
int num7 = 16;
Array.Copy(BitConverter.GetBytes(value), 0, array2, num7, 4);
num7 += 4;
Array.Copy(BitConverter.GetBytes(value), 0, array2, num7, 4);
num7 = 60;
Array.Copy(BitConverter.GetBytes(value), 0, array2, num7, 4);
num7 += 4;
num7 += 8;
Array.Copy(BitConverter.GetBytes(value), 0, array2, num7, 4);
}
s.Write(array2, 0, array2.Length);
}
}
else
{
array3 = ZipOutput.GenCentralDirectoryFooter(num3, num2, zip64, num6, comment, container);
}
if (num4 != 0u)
{
ushort value2 = (ushort)zipSegmentedStream.ComputeSegment(array3.Length);
int num8 = 4;
Array.Copy(BitConverter.GetBytes(value2), 0, array3, num8, 2);
num8 += 2;
Array.Copy(BitConverter.GetBytes(value2), 0, array3, num8, 2);
num8 += 2;
}
s.Write(array3, 0, array3.Length);
if (zipSegmentedStream != null)
{
zipSegmentedStream.ContiguousWrite = false;
}
return(flag);
}
private static byte[] GenCentralDirectoryFooter(long StartOfCentralDirectory, long EndOfCentralDirectory, Zip64Option zip64, int entryCount, string comment, ZipContainer container)
{
Encoding encoding = ZipOutput.GetEncoding(container, comment);
int num = 22;
byte[] array = null;
short num2 = 0;
if (comment != null && comment.Length != 0)
{
array = encoding.GetBytes(comment);
num2 = (short)array.Length;
}
num += (int)num2;
byte[] array2 = new byte[num];
int num3 = 0;
byte[] bytes = BitConverter.GetBytes(101010256u);
Array.Copy(bytes, 0, array2, num3, 4);
num3 += 4;
array2[num3++] = 0;
array2[num3++] = 0;
array2[num3++] = 0;
array2[num3++] = 0;
if (entryCount >= 65535 || zip64 == Zip64Option.Always)
{
for (int i = 0; i < 4; i++)
{
array2[num3++] = 255;
}
}
else
{
array2[num3++] = (byte)(entryCount & 255);
array2[num3++] = (byte)((entryCount & 65280) >> 8);
array2[num3++] = (byte)(entryCount & 255);
array2[num3++] = (byte)((entryCount & 65280) >> 8);
}
long num4 = EndOfCentralDirectory - StartOfCentralDirectory;
if (num4 >= (long)((ulong)-1) || StartOfCentralDirectory >= (long)((ulong)-1))
{
for (int i = 0; i < 8; i++)
{
array2[num3++] = 255;
}
}
else
{
array2[num3++] = (byte)(num4 & 255L);
array2[num3++] = (byte)((num4 & 65280L) >> 8);
array2[num3++] = (byte)((num4 & 16711680L) >> 16);
array2[num3++] = (byte)((num4 & (long)((ulong)-16777216)) >> 24);
array2[num3++] = (byte)(StartOfCentralDirectory & 255L);
array2[num3++] = (byte)((StartOfCentralDirectory & 65280L) >> 8);
array2[num3++] = (byte)((StartOfCentralDirectory & 16711680L) >> 16);
array2[num3++] = (byte)((StartOfCentralDirectory & (long)((ulong)-16777216)) >> 24);
}
if (comment == null || comment.Length == 0)
{
array2[num3++] = 0;
array2[num3++] = 0;
}
else
{
if ((int)num2 + num3 + 2 > array2.Length)
{
num2 = (short)(array2.Length - num3 - 2);
}
array2[num3++] = (byte)(num2 & 255);
array2[num3++] = (byte)(((int)num2 & 65280) >> 8);
if (num2 != 0)
{
int i = 0;
while (i < (int)num2 && num3 + i < array2.Length)
{
array2[num3 + i] = array[i];
i++;
}
num3 += i;
}
}
return(array2);
}
/// <summary>
/// Saves the Zip archive to a file, specified by the Name property of the
/// <c>ZipFile</c>.
/// </summary>
///
/// <remarks>
/// <para>
/// The <c>ZipFile</c> instance is written to storage, typically a zip file
/// in a filesystem, only when the caller calls <c>Save</c>. In the typical
/// case, the Save operation writes the zip content to a temporary file, and
/// then renames the temporary file to the desired name. If necessary, this
/// method will delete a pre-existing file before the rename.
/// </para>
///
/// <para>
/// The <see cref="ZipFile.Name"/> property is specified either explicitly,
/// or implicitly using one of the parameterized ZipFile constructors. For
/// COM Automation clients, the <c>Name</c> property must be set explicitly,
/// because COM Automation clients cannot call parameterized constructors.
/// </para>
///
/// <para>
/// When using a filesystem file for the Zip output, it is possible to call
/// <c>Save</c> multiple times on the <c>ZipFile</c> instance. With each
/// call the zip content is re-written to the same output file.
/// </para>
///
/// <para>
/// Data for entries that have been added to the <c>ZipFile</c> instance is
/// written to the output when the <c>Save</c> method is called. This means
/// that the input streams for those entries must be available at the time
/// the application calls <c>Save</c>. If, for example, the application
/// adds entries with <c>AddEntry</c> using a dynamically-allocated
/// <c>MemoryStream</c>, the memory stream must not have been disposed
/// before the call to <c>Save</c>. See the <see
/// cref="ZipEntry.InputStream"/> property for more discussion of the
/// availability requirements of the input stream for an entry, and an
/// approach for providing just-in-time stream lifecycle management.
/// </para>
///
/// </remarks>
///
/// <seealso cref="Ionic.Zip.ZipFile.AddEntry(String, System.IO.Stream)"/>
///
/// <exception cref="Ionic.Zip.BadStateException">
/// Thrown if you haven't specified a location or stream for saving the zip,
/// either in the constructor or by setting the Name property, or if you try
/// to save a regular zip archive to a filename with a .exe extension.
/// </exception>
///
/// <exception cref="System.OverflowException">
/// Thrown if <see cref="MaxOutputSegmentSize"/> is non-zero, and the number
/// of segments that would be generated for the spanned zip file during the
/// save operation exceeds 99. If this happens, you need to increase the
/// segment size.
/// </exception>
///
public void Save()
{
try
{
bool thisSaveUsedZip64 = false;
_saveOperationCanceled = false;
_numberOfSegmentsForMostRecentSave = 0;
OnSaveStarted();
if (WriteStream == null)
{
throw new BadStateException("You haven't specified where to save the zip.");
}
if (_name != null && _name.EndsWith(".exe") && !_SavingSfx)
{
throw new BadStateException("You specified an EXE for a plain zip file.");
}
// check if modified, before saving.
if (!_contentsChanged)
{
OnSaveCompleted();
if (Verbose)
{
StatusMessageTextWriter.WriteLine("No save is necessary....");
}
return;
}
Reset(true);
if (Verbose)
{
StatusMessageTextWriter.WriteLine("saving....");
}
// validate the number of entries
if (_entries.Count >= 0xFFFF && _zip64 == Zip64Option.Never)
{
throw new ZipException("The number of entries is 65535 or greater. Consider setting the UseZip64WhenSaving property on the ZipFile instance.");
}
// write an entry in the zip for each file
int n = 0;
// workitem 9831
ICollection <ZipEntry> c = (SortEntriesBeforeSaving) ? EntriesSorted : Entries;
foreach (ZipEntry e in c) // _entries.Values
{
OnSaveEntry(n, e, true);
e.Write(WriteStream);
if (_saveOperationCanceled)
{
break;
}
n++;
OnSaveEntry(n, e, false);
if (_saveOperationCanceled)
{
break;
}
// Some entries can be skipped during the save.
if (e.IncludedInMostRecentSave)
{
thisSaveUsedZip64 |= e.OutputUsedZip64.Value;
}
}
if (_saveOperationCanceled)
{
return;
}
var zss = WriteStream as ZipSegmentedStream;
_numberOfSegmentsForMostRecentSave = (zss != null)
? zss.CurrentSegment
: 1;
bool directoryNeededZip64 =
ZipOutput.WriteCentralDirectoryStructure
(WriteStream,
c,
_numberOfSegmentsForMostRecentSave,
_zip64,
Comment,
new ZipContainer(this));
OnSaveEvent(ZipProgressEventType.Saving_AfterSaveTempArchive);
_hasBeenSaved = true;
_contentsChanged = false;
thisSaveUsedZip64 |= directoryNeededZip64;
_OutputUsesZip64 = new Nullable <bool>(thisSaveUsedZip64);
// do the rename as necessary
if (_name != null &&
(_temporaryFileName != null || zss != null))
{
// _temporaryFileName may remain null if we are writing to a stream.
// only close the stream if there is a file behind it.
#if NETCF
WriteStream.Close();
#else
WriteStream.Dispose();
#endif
if (_saveOperationCanceled)
{
return;
}
if (_fileAlreadyExists && this._readstream != null)
{
// This means we opened and read a zip file.
// If we are now saving to the same file, we need to close the
// orig file, first.
this._readstream.Close();
this._readstream = null;
// the archiveStream for each entry needs to be null
foreach (var e in c)
{
var zss1 = e._archiveStream as ZipSegmentedStream;
if (zss1 != null)
#if NETCF
{ zss1.Close(); }
#else
{ zss1.Dispose(); }
#endif
e._archiveStream = null;
}
}
string tmpName = null;
if (File.Exists(_name))
{
// the steps:
//
// 1. Delete tmpName
// 2. move existing zip to tmpName
// 3. rename (File.Move) working file to name of existing zip
// 4. delete tmpName
//
// This series of steps avoids the exception,
// System.IO.IOException:
// "Cannot create a file when that file already exists."
//
// Cannot just call File.Replace() here because
// there is a possibility that the TEMP volume is different
// that the volume for the final file (c:\ vs d:\).
// So we need to do a Delete+Move pair.
//
// But, when doing the delete, Windows allows a process to
// delete the file, even though it is held open by, say, a
// virus scanner. It gets internally marked as "delete
// pending". The file does not actually get removed from the
// file system, it is still there after the File.Delete
// call.
//
// Therefore, we need to move the existing zip, which may be
// held open, to some other name. Then rename our working
// file to the desired name, then delete (possibly delete
// pending) the "other name".
//
// Ideally this would be transactional. It's possible that the
// delete succeeds and the move fails. Lacking transactions, if
// this kind of failure happens, we're hosed, and this logic will
// throw on the next File.Move().
//
//File.Delete(_name);
// workitem 10447
#if NETCF || SILVERLIGHT
tmpName = _name + "." + SharedUtilities.GenerateRandomStringImpl(8, 0) + ".tmp";
#else
tmpName = _name + "." + Path.GetRandomFileName();
#endif
if (File.Exists(tmpName))
{
DeleteFileWithRetry(tmpName);
}
File.Move(_name, tmpName);
}
OnSaveEvent(ZipProgressEventType.Saving_BeforeRenameTempArchive);
File.Move((zss != null) ? zss.CurrentTempName : _temporaryFileName,
_name);
OnSaveEvent(ZipProgressEventType.Saving_AfterRenameTempArchive);
if (tmpName != null)
{
try
{
// not critical
if (File.Exists(tmpName))
{
File.Delete(tmpName);
}
}
catch
{
// don't care about exceptions here.
}
}
_fileAlreadyExists = true;
}
NotifyEntriesSaveComplete(c);
OnSaveCompleted();
_JustSaved = true;
}
// workitem 5043
finally
{
CleanupAfterSaveOperation();
}
return;
}