forked from mia/Aegisub
96 lines
3.6 KiB
C#
96 lines
3.6 KiB
C#
// Copyright (c) 2014, Thomas Goyne <plorkyeran@aegisub.org>
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//
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// Permission to use, copy, modify, and distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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//
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// Aegisub Project http://www.aegisub.org/
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using ICSharpCode.SharpZipLib.Tar;
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using System;
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using System.IO;
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using System.Security.Cryptography;
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namespace BuildTasks {
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public class TarballProject : Microsoft.Build.Utilities.Task {
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public string Url { get; set; }
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public string Root { get; set; }
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public string Hash { get; set; }
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private bool NeedsUpdate() {
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try {
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return Hash != File.ReadAllText(Path.Combine(Root, "aegisub.hash"));
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}
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catch (IOException) {
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return true;
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}
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}
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private void ExtractEntry(string destDir, TarEntry entry, ICSharpCode.SharpZipLib.Tar.TarInputStream stream) {
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string name = entry.Name;
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if (Path.IsPathRooted(name))
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name = name.Substring(Path.GetPathRoot(name).Length);
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name = name.Replace('/', Path.DirectorySeparatorChar);
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name = name.Substring(name.IndexOf(Path.DirectorySeparatorChar) + 1);
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string dest = Path.Combine(destDir, name);
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if (entry.IsDirectory)
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Directory.CreateDirectory(dest);
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else {
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Directory.CreateDirectory(Path.GetDirectoryName(dest));
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using (Stream outputStream = File.Create(dest)) {
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stream.CopyEntryContents(outputStream);
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}
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}
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}
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public override bool Execute() {
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if (!NeedsUpdate()) return true;
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try {
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var ms = new MemoryStream();
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var downloadStream = new System.Net.WebClient().OpenRead(Url);
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downloadStream.CopyTo(ms);
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ms.Seek(0, SeekOrigin.Begin);
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var hash = new SHA256Managed().ComputeHash(ms);
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if (BitConverter.ToString(hash).Replace("-", "").ToLower() != this.Hash) {
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Log.LogError("Got wrong hash for {0}", Url);
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return false;
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}
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try {
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Directory.Delete(Root, true);
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}
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catch (DirectoryNotFoundException) {
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// Obviously not an issue
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}
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ms.Seek(0, SeekOrigin.Begin);
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var bzStream = new ICSharpCode.SharpZipLib.BZip2.BZip2InputStream(ms);
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var tarStream = new ICSharpCode.SharpZipLib.Tar.TarInputStream(bzStream);
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while (true) {
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TarEntry entry = tarStream.GetNextEntry();
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if (entry == null) break;
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ExtractEntry(Root, entry, tarStream);
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}
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File.WriteAllText(Path.Combine(Root, "aegisub.hash"), Hash);
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return true;
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}
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catch (Exception e) {
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Log.LogErrorFromException(e);
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return false;
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}
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}
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}
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}
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