mirror of
https://github.com/ShareX/ShareX.git
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197 lines
No EOL
7 KiB
C#
197 lines
No EOL
7 KiB
C#
#region License Information (GPL v3)
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/*
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ShareX - A program that allows you to take screenshots and share any file type
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Copyright (c) 2007-2020 ShareX Team
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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Optionally you can also view the license at <http://www.gnu.org/licenses/>.
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*/
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#endregion License Information (GPL v3)
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.IO.Compression;
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using System.Linq;
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namespace ShareX.HelpersLib
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{
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public static class ZipManager
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{
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public static void Extract(string archivePath, string destination, bool retainDirectoryStructure = true, Func<ZipArchiveEntry, bool> filter = null,
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long maxUncompressedSize = 0)
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{
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using (ZipArchive archive = ZipFile.OpenRead(archivePath))
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{
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if (maxUncompressedSize > 0)
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{
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long totalUncompressedSize = archive.Entries.Sum(entry => entry.Length);
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if (totalUncompressedSize > maxUncompressedSize)
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{
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throw new Exception("Uncompressed file size of this archive is bigger than the maximum allowed file size.\r\n\r\n" +
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$"Archive uncompressed file size: {totalUncompressedSize.ToSizeString()}\r\n" +
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$"Maximum allowed file size: {maxUncompressedSize.ToSizeString()}");
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}
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}
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string fullName = Directory.CreateDirectory(Path.GetFullPath(destination)).FullName;
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foreach (ZipArchiveEntry entry in archive.Entries)
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{
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if (filter != null && !filter(entry))
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{
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continue;
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}
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string entryName;
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if (retainDirectoryStructure)
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{
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entryName = entry.FullName;
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}
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else
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{
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entryName = entry.Name;
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}
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string fullPath = Path.GetFullPath(Path.Combine(fullName, entryName));
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if (fullPath.StartsWith(fullName, StringComparison.OrdinalIgnoreCase))
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{
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if (Path.GetFileName(fullPath).Length == 0)
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{
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if (entry.Length == 0)
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{
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Directory.CreateDirectory(fullPath);
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}
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}
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else
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{
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Directory.CreateDirectory(Path.GetDirectoryName(fullPath));
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ExtractToFile(entry, fullPath, true);
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}
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}
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}
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}
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}
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private static void ExtractToFile(ZipArchiveEntry source, string destinationFileName, bool overwrite)
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{
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if (source == null)
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{
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throw new ArgumentNullException(nameof(source));
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}
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if (destinationFileName == null)
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{
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throw new ArgumentNullException(nameof(destinationFileName));
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}
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FileMode fMode = overwrite ? FileMode.Create : FileMode.CreateNew;
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using (FileStream fs = new FileStream(destinationFileName, fMode, FileAccess.Write, FileShare.None, bufferSize: 0x1000, useAsync: false))
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using (Stream es = source.Open())
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using (MaxLengthStream maxLengthStream = new MaxLengthStream(es, source.Length))
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{
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maxLengthStream.CopyTo(fs);
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}
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File.SetLastWriteTime(destinationFileName, source.LastWriteTime.DateTime);
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}
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public static void Compress(string source, string archivePath, CompressionLevel compression = CompressionLevel.Optimal)
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{
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if (File.Exists(archivePath))
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{
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File.Delete(archivePath);
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}
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ZipFile.CreateFromDirectory(source, archivePath, compression, false);
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}
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public static void Compress(string archivePath, List<ZipEntryInfo> entries, CompressionLevel compression = CompressionLevel.Optimal)
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{
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Helpers.CreateDirectoryFromFilePath(archivePath);
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if (File.Exists(archivePath))
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{
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File.Delete(archivePath);
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}
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using (ZipArchive archive = ZipFile.Open(archivePath, ZipArchiveMode.Create))
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{
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foreach (ZipEntryInfo entry in entries)
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{
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archive.CreateEntry(entry, compression);
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}
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}
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}
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private static ZipArchiveEntry CreateEntry(this ZipArchive archive, ZipEntryInfo entryInfo, CompressionLevel compressionLevel)
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{
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if (entryInfo == null)
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{
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throw new ArgumentNullException(nameof(entryInfo));
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}
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if (entryInfo.Data != null)
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{
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using (entryInfo.Data)
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{
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return archive.CreateEntryFromStream(entryInfo.Data, entryInfo.EntryName, compressionLevel);
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}
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}
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else if (!string.IsNullOrEmpty(entryInfo.SourcePath) && File.Exists(entryInfo.SourcePath))
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{
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return archive.CreateEntryFromFile(entryInfo.SourcePath, entryInfo.EntryName, compressionLevel);
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}
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return null;
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}
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private static ZipArchiveEntry CreateEntryFromStream(this ZipArchive archive, Stream stream, string entryName, CompressionLevel compressionLevel)
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{
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if (archive == null)
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{
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throw new ArgumentNullException(nameof(archive));
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}
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if (stream == null)
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{
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throw new ArgumentNullException(nameof(stream));
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}
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if (entryName == null)
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{
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throw new ArgumentNullException(nameof(entryName));
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}
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ZipArchiveEntry entry = archive.CreateEntry(entryName, compressionLevel);
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entry.LastWriteTime = DateTime.Now;
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using (Stream entryStream = entry.Open())
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{
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stream.Position = 0;
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stream.CopyTo(entryStream);
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}
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return entry;
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}
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}
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} |