103 lines
3.9 KiB
C#
103 lines
3.9 KiB
C#
/*
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*
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* (c) Copyright Ascensio System Limited 2010-2020
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*
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* This program is freeware. You can redistribute it and/or modify it under the terms of the GNU
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* General Public License (GPL) version 3 as published by the Free Software Foundation (https://www.gnu.org/copyleft/gpl.html).
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* In accordance with Section 7(a) of the GNU GPL its Section 15 shall be amended to the effect that
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* Ascensio System SIA expressly excludes the warranty of non-infringement of any third-party rights.
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*
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* THIS PROGRAM IS DISTRIBUTED WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY OR
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* FITNESS FOR A PARTICULAR PURPOSE. For more details, see GNU GPL at https://www.gnu.org/copyleft/gpl.html
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*
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* You can contact Ascensio System SIA by email at sales@onlyoffice.com
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*
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* The interactive user interfaces in modified source and object code versions of ONLYOFFICE must display
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* Appropriate Legal Notices, as required under Section 5 of the GNU GPL version 3.
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*
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* Pursuant to Section 7 § 3(b) of the GNU GPL you must retain the original ONLYOFFICE logo which contains
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* relevant author attributions when distributing the software. If the display of the logo in its graphic
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* form is not reasonably feasible for technical reasons, you must include the words "Powered by ONLYOFFICE"
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* in every copy of the program you distribute.
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* Pursuant to Section 7 § 3(e) we decline to grant you any rights under trademark law for use of our trademarks.
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*
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*/
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namespace ASC.Data.Backup
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{
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public class ZipWriteOperator : IDataWriteOperator
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{
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private readonly GZipOutputStream gZipOutputStream;
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private readonly TarOutputStream tarOutputStream;
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private readonly Stream file;
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private TempStream TempStream { get; }
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public ZipWriteOperator(TempStream tempStream, string targetFile)
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{
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file = new FileStream(targetFile, FileMode.Create);
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gZipOutputStream = new GZipOutputStream(file);
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tarOutputStream = new TarOutputStream(gZipOutputStream, Encoding.UTF8);
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TempStream = tempStream;
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}
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public void WriteEntry(string key, Stream stream)
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{
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using (var buffered = TempStream.GetBuffered(stream))
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{
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var entry = TarEntry.CreateTarEntry(key);
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entry.Size = buffered.Length;
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tarOutputStream.PutNextEntry(entry);
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buffered.Position = 0;
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buffered.CopyTo(tarOutputStream);
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tarOutputStream.CloseEntry();
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}
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}
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public void Dispose()
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{
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tarOutputStream.Close();
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tarOutputStream.Dispose();
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}
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}
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public class ZipReadOperator : IDataReadOperator
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{
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private readonly string tmpdir;
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public ZipReadOperator(string targetFile)
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{
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tmpdir = Path.Combine(Path.GetDirectoryName(targetFile), Path.GetFileNameWithoutExtension(targetFile).Replace('>', '_').Replace(':', '_').Replace('?', '_'));
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using (var stream = File.OpenRead(targetFile))
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using (var reader = new GZipInputStream(stream))
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using (var tarOutputStream = TarArchive.CreateInputTarArchive(reader, Encoding.UTF8))
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{
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tarOutputStream.ExtractContents(tmpdir);
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}
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File.Delete(targetFile);
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}
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public Stream GetEntry(string key)
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{
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var filePath = Path.Combine(tmpdir, key);
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return File.Exists(filePath) ? File.Open(filePath, FileMode.Open, FileAccess.ReadWrite, FileShare.Read) : null;
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}
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public IEnumerable<string> GetEntries(string key)
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{
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var path = Path.Combine(tmpdir, key);
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var files = Directory.EnumerateFiles(path);
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return files;
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}
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public void Dispose()
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{
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if (Directory.Exists(tmpdir))
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{
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Directory.Delete(tmpdir, true);
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}
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}
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}
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} |