1 // Permission is hereby granted, free of charge, to any person obtaining
2 // a copy of this software and associated documentation files (the
3 // "Software"), to deal in the Software without restriction, including
4 // without limitation the rights to use, copy, modify, merge, publish,
5 // distribute, sublicense, and/or sell copies of the Software, and to
6 // permit persons to whom the Software is furnished to do so, subject to
7 // the following conditions:
9 // The above copyright notice and this permission notice shall be
10 // included in all copies or substantial portions of the Software.
12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20 // Copyright (c) 2007 Novell, Inc. (http://www.novell.com)
23 // Chris Toshok (toshok@ximian.com)
30 namespace System.IO.Packaging {
32 public sealed class ZipPackagePart : PackagePart
34 new ZipPackage Package {
35 get { return (ZipPackage)base.Package; }
38 internal ZipPackagePart (Package package, Uri partUri)
39 : base (package, partUri)
44 internal ZipPackagePart (Package package, Uri partUri, string contentType)
45 : base (package, partUri, contentType)
50 internal ZipPackagePart (Package package, Uri partUri, string contentType, CompressionOption compressionOption )
51 : base (package, partUri, contentType, compressionOption)
56 protected override Stream GetStreamCore (FileMode mode, FileAccess access)
60 if (Package.PartStreams.TryGetValue (Uri, out stream)) {
61 zps = new ZipPartStream (Package, stream, access);
62 if (mode == FileMode.Create)
64 return new ZipPartStream (Package, stream, access);
67 stream = new MemoryStream ();
70 using (UnzipArchive archive = new UnzipArchive (Package.PackageStream)) {
71 foreach (string file in archive.GetFiles ()) {
72 if (file != Uri.ToString ().Substring (1))
75 using (Stream archiveStream = archive.GetStream (file)) {
77 byte[] buffer = new byte [Math.Min (archiveStream.Length, 2 * 1024)];
78 while ((read = archiveStream.Read (buffer, 0, buffer.Length)) != 0)
79 stream.Write (buffer, 0, read);
86 // The zipfile is invalid, so just create the file
87 // as if it didn't exist
91 Package.PartStreams.Add (Uri, stream);
92 if (mode == FileMode.Create)
94 return new ZipPartStream (Package, stream, access);