public static void WriteEntryToFile(IEntry entry, string destinationFileName,
ExtractionOptions options,
Action <string, FileMode> openAndWrite)
{
if (entry.LinkTarget != null)
{
if (null == options.WriteSymbolicLink)
{
throw new ExtractionException("Entry is a symbolic link but ExtractionOptions.WriteSymbolicLink delegate is null");
}
options.WriteSymbolicLink(destinationFileName, entry.LinkTarget);
}
else
{
FileMode fm = FileMode.Create;
options = options ?? new ExtractionOptions()
{
Overwrite = true
};
if (!options.Overwrite)
{
fm = FileMode.CreateNew;
}
openAndWrite(destinationFileName, fm);
entry.PreserveExtractionOptions(destinationFileName, options);
}
}
/// <summary>
/// Extract to specific directory, retaining filename
/// </summary>
public static void WriteEntryToDirectory(IEntry entry,
string destinationDirectory,
ExtractionOptions options = null,
Action <string, ExtractionOptions> write = null)
{
string destinationFileName;
string file = Path.GetFileName(entry.Key);
string fullDestinationDirectoryPath = Path.GetFullPath(destinationDirectory);
options = options != null? options:new ExtractionOptions()
{
Overwrite = true
};
if (options.ExtractFullPath)
{
string folder = Path.GetDirectoryName(entry.Key);
string destdir = Path.GetFullPath(
Path.Combine(fullDestinationDirectoryPath, folder)
);
if (!Directory.Exists(destdir))
{
if (!destdir.StartsWith(fullDestinationDirectoryPath))
{
throw new ExtractionException("Entry is trying to create a directory outside of the destination directory.");
}
Directory.CreateDirectory(destdir);
}
destinationFileName = Path.Combine(destdir, file);
}
else
{
destinationFileName = Path.Combine(fullDestinationDirectoryPath, file);
}
if (!entry.IsDirectory)
{
destinationFileName = Path.GetFullPath(destinationFileName);
if (!destinationFileName.StartsWith(fullDestinationDirectoryPath))
{
throw new ExtractionException("Entry is trying to write a file outside of the destination directory.");
}
write(destinationFileName, options);
}
else if (options.ExtractFullPath && !Directory.Exists(destinationFileName))
{
Directory.CreateDirectory(destinationFileName);
}
}
public static void WriteEntryToFile(IEntry entry, string destinationFileName,
ExtractionOptions options,
Action <string, FileMode> openAndWrite)
{
FileMode fm = FileMode.Create;
options = options ?? new ExtractionOptions()
{
Overwrite = true
};
if (!options.Overwrite)
{
fm = FileMode.CreateNew;
}
openAndWrite(destinationFileName, fm);
entry.PreserveExtractionOptions(destinationFileName, options);
}
internal static void PreserveExtractionOptions(this IEntry entry, string destinationFileName,
ExtractionOptions options)
{
if (options.PreserveFileTime || options.PreserveAttributes)
{
FileInfo nf = new FileInfo(destinationFileName);
if (!nf.Exists)
{
return;
}
// update file time to original packed time
if (options.PreserveFileTime)
{
if (entry.CreatedTime.HasValue)
{
nf.CreationTime = entry.CreatedTime.Value;
}
if (entry.LastModifiedTime.HasValue)
{
nf.LastWriteTime = entry.LastModifiedTime.Value;
}
if (entry.LastAccessedTime.HasValue)
{
nf.LastAccessTime = entry.LastAccessedTime.Value;
}
}
if (options.PreserveAttributes)
{
if (entry.Attrib.HasValue)
{
nf.Attributes = (FileAttributes)System.Enum.ToObject(typeof(FileAttributes), entry.Attrib.Value);
}
}
options?.PostWriteHandler(entry, destinationFileName);
}
}
/// <summary>
/// Extract to specific directory, retaining filename
/// </summary>
public static void WriteEntryToDirectory(IEntry entry, string destinationDirectory,
ExtractionOptions options, Action <string, ExtractionOptions> write)
{
string destinationFileName;
string file = Path.GetFileName(entry.Key);
string fullDestinationDirectoryPath = Path.GetFullPath(destinationDirectory);
options = options ?? new ExtractionOptions()
{
Overwrite = true
};
if (options.ExtractFullPath)
{
string folder = Path.GetDirectoryName(entry.Key);
if (options.StripComponents.HasValue)
{
folder = folder.Trim(_PathComponentsSeparators);
folder += '/';
var folderLength = folder.Length;
var stripIndex = 0;
for (int n = 0, c = options.StripComponents.Value; n < c; n++)
{
stripIndex = folder.IndexOfAny(_PathComponentsSeparators, stripIndex);
if (stripIndex < 0)
{
return; // mimic tar --strip-components behavior, i.e. throw away content not deep enough
}
// consider multiple sequential path component separators as one
stripIndex++;
while (stripIndex < folderLength)
{
var strip = false;
var chr = folder[stripIndex];
for (int i = 0; i < _PathComponentsSeparators.Length; i++)
{
if (chr == _PathComponentsSeparators[i])
{
strip = true;
break;
}
}
if (strip)
{
stripIndex++;
}
else
{
break;
}
}
}
folder = folder.Substring(stripIndex).TrimEnd('/');
}
string destdir = Path.GetFullPath(
Path.Combine(fullDestinationDirectoryPath, folder)
);
if (!Directory.Exists(destdir))
{
if (!destdir.StartsWith(fullDestinationDirectoryPath))
{
throw new ExtractionException("Entry is trying to create a directory outside of the destination directory.");
}
Directory.CreateDirectory(destdir);
}
destinationFileName = Path.Combine(destdir, file);
}
else
{
destinationFileName = Path.Combine(fullDestinationDirectoryPath, file);
}
if (!entry.IsDirectory)
{
destinationFileName = Path.GetFullPath(destinationFileName);
if (!destinationFileName.StartsWith(fullDestinationDirectoryPath))
{
throw new ExtractionException("Entry is trying to write a file outside of the destination directory.");
}
write(destinationFileName, options);
}
else if (options.ExtractFullPath && !Directory.Exists(destinationFileName))
{
Directory.CreateDirectory(destinationFileName);
}
}
/// <summary>
/// Extract to specific directory, retaining filename
/// </summary>
public static void WriteEntryToDirectory(IEntry entry,
string destinationDirectory,
ExtractionOptions options,
Action <string, ExtractionOptions> write)
{
string destinationFileName;
string fullDestinationDirectoryPath = Path.GetFullPath(destinationDirectory);
//check for trailing slash.
if (fullDestinationDirectoryPath[fullDestinationDirectoryPath.Length - 1] != Path.DirectorySeparatorChar)
{
fullDestinationDirectoryPath += Path.DirectorySeparatorChar;
}
if (!Directory.Exists(fullDestinationDirectoryPath))
{
throw new ExtractionException($"Directory does not exist to extract to: {fullDestinationDirectoryPath}");
}
if (options == null)
{
options = new ExtractionOptions()
{
Overwrite = true
}
}
;
string file = Path.GetFileName(entry.Key);
if (options.ExtractFullPath)
{
string folder = Path.GetDirectoryName(entry.Key);
string destdir = Path.GetFullPath(Path.Combine(fullDestinationDirectoryPath, folder));
if (!Directory.Exists(destdir))
{
if (!destdir.StartsWith(fullDestinationDirectoryPath, StringComparison.Ordinal))
{
throw new ExtractionException("Entry is trying to create a directory outside of the destination directory.");
}
Directory.CreateDirectory(destdir);
}
destinationFileName = Path.Combine(destdir, file);
}
else
{
destinationFileName = Path.Combine(fullDestinationDirectoryPath, file);
}
if (!entry.IsDirectory)
{
destinationFileName = Path.GetFullPath(destinationFileName);
if (!destinationFileName.StartsWith(fullDestinationDirectoryPath, StringComparison.Ordinal))
{
throw new ExtractionException("Entry is trying to write a file outside of the destination directory.");
}
write(destinationFileName, options);
}
else if (options.ExtractFullPath && !Directory.Exists(destinationFileName))
{
Directory.CreateDirectory(destinationFileName);
}
}
