public void Overwrites()
{
var files = new[]
{
"a.txt",
"dir/b.txt"
};
var dest = CreateZip(files);
var outDir = Path.Combine(_tempDir, "out");
var task = new UnzipArchive
{
File = dest,
Destination = outDir,
BuildEngine = new MockEngine(),
Overwrite = true
};
Directory.CreateDirectory(outDir);
// Create a.txt before trying to unzip
var path = Path.Combine(outDir, "a.txt");
File.WriteAllText(path, "contents!");
Assert.True(task.Execute(), "The task failed but should have passed.");
Assert.Empty(File.ReadAllText(path));
}
public void UnzipsSubdirectories()
{
var files = new[]
{
"a/b/c/d.dll",
"e/f/j/k/l.json",
"e/f/m/n/o.json"
};
var dest = CreateZip(files);
var outDir = Path.Combine(_tempDir, "out");
var task = new UnzipArchive
{
File = dest,
Destination = outDir,
BuildEngine = new MockEngine(),
};
Assert.True(task.Execute(), "The task failed but should have passed.");
Assert.True(Directory.Exists(outDir), outDir + " does not exist");
Assert.Equal(files.Length, task.OutputFiles.Length);
Assert.All(task.OutputFiles,
f => Assert.True(Path.IsPathRooted(f.ItemSpec), $"Entry {f} should be a fullpath rooted"));
foreach (var file in files)
{
var outFile = Path.Combine(outDir, file);
Assert.True(File.Exists(outFile), outFile + " does not exist");
}
}
public void DoesNotOverwrite()
{
var files = new[]
{
"a.txt",
"dir/b.txt"
};
var dest = CreateZip(files);
var outDir = Path.Combine(_tempDir, "out");
var task = new UnzipArchive
{
File = dest,
Destination = outDir,
BuildEngine = new MockEngine(),
Overwrite = false
};
Directory.CreateDirectory(outDir);
// Create a.txt before trying to unzip
var path = Path.Combine(outDir, "a.txt");
var contents = "contents!";
File.WriteAllText(path, contents);
Assert.Throws <IOException>(() => task.Execute());
Assert.Equal(contents, File.ReadAllText(path));
}
void LoadParts()
{
parts = new Dictionary <Uri, ZipPackagePart> (new UriComparer());
try
{
using (UnzipArchive archive = new UnzipArchive(PackageStream))
{
// Load the content type map file
XmlDocument doc = new XmlDocument();
using (Stream s = archive.GetStream(ContentUri))
doc.Load(s);
XmlNamespaceManager manager = new XmlNamespaceManager(doc.NameTable);
manager.AddNamespace("content", ContentNamespace);
// The file names in the zip archive are not prepended with '/'
foreach (string file in archive.GetFiles())
{
if (file.Equals(ContentUri, StringComparison.Ordinal))
{
continue;
}
XmlNode node;
CompressionOption compression = archive.GetCompressionLevel(file);
if (file == RelationshipUri.ToString().Substring(1))
{
CreatePartCore(RelationshipUri, RelationshipContentType, compression);
continue;
}
string xPath = string.Format("/content:Types/content:Override[@PartName='/{0}']", file);
node = doc.SelectSingleNode(xPath, manager);
if (node == null)
{
string ext = Path.GetExtension(file);
if (ext.StartsWith("."))
{
ext = ext.Substring(1);
}
xPath = string.Format("/content:Types/content:Default[@Extension='{0}']", ext);
node = doc.SelectSingleNode(xPath, manager);
}
// What do i do if the node is null? This means some has tampered with the
// package file manually
if (node != null)
{
CreatePartCore(new Uri("/" + file, UriKind.Relative), node.Attributes["ContentType"].Value, compression);
}
}
}
}
catch
{
// The archive is invalid - therefore no parts
}
}
protected override Stream GetStreamCore(FileMode mode, FileAccess access)
{
ZipPartStream zps;
MemoryStream stream;
if (Package.PartStreams.TryGetValue(Uri, out stream))
{
zps = new ZipPartStream(Package, stream, access);
if (mode == FileMode.Create)
{
stream.SetLength(0);
}
return(new ZipPartStream(Package, stream, access));
}
stream = new MemoryStream();
try
{
using (UnzipArchive archive = new UnzipArchive(Package.PackageStream))
{
foreach (string file in archive.GetFiles())
{
if (file != Uri.ToString().Substring(1))
{
continue;
}
using (Stream archiveStream = archive.GetStream(file))
{
int read = 0;
byte[] buffer = new byte [Math.Min(archiveStream.Length, 2 * 1024)];
while ((read = archiveStream.Read(buffer, 0, buffer.Length)) != 0)
{
stream.Write(buffer, 0, read);
}
}
}
}
}
catch
{
// The zipfile is invalid, so just create the file
// as if it didn't exist
stream.SetLength(0);
}
Package.PartStreams.Add(Uri, stream);
if (mode == FileMode.Create)
{
stream.SetLength(0);
}
return(new ZipPartStream(Package, stream, access));
}
public void ItNormalizesBacklashesInPath()
{
var files = new[]
{
@"dir\b.txt"
};
var dest = CreateZip(files);
var outDir = Path.Combine(_tempDir, "out");
var engine = new MockEngine();
var task = new UnzipArchive
{
File = dest,
Destination = outDir,
BuildEngine = engine,
Overwrite = false
};
Assert.True(task.Execute(), "The task failed but should have passed.");
Assert.True(File.Exists(Path.Combine(outDir, "dir", "b.txt")), "File should exist.");
}