/// <summary>
/// Extracts the file from the gzip archive.
/// </summary>
protected override void ExecuteTask()
{
try {
using (GZipInputStream gzs = new GZipInputStream(SrcFile.OpenRead())) {
Log(Level.Info, "Expanding '{0}' to '{1}' ({2} bytes).",
SrcFile.FullName, DestFile.FullName, gzs.Length);
// holds data from src file
byte[] data = new byte[8 * 1024];
// first read from input to ensure we're dealing with valid
// src file before we actually create the dest file
int size = gzs.Read(data, 0, data.Length);
// write expanded data to dest file
using (FileStream fs = new FileStream(DestFile.FullName, FileMode.Create, FileAccess.Write, FileShare.None)) {
while (size > 0)
{
fs.Write(data, 0, size);
size = gzs.Read(data, 0, data.Length);
}
// close output stream
fs.Close();
}
// close input stream
gzs.Close();
}
} catch (IOException ex) {
throw new BuildException(string.Format(CultureInfo.InvariantCulture,
"Failed to expand '{0}' to '{1}'.", SrcFile.FullName,
DestFile.FullName), Location, ex);
/* Uncomment when upgrade to next #ziplib release is done
* } catch (GZipException ex) {
* throw new BuildException(string.Format(CultureInfo.InvariantCulture,
* "Invalid gzip file '{0}'.", SrcFile.FullName), Location, ex);
*/
}
}
/// <summary>
/// Extracts the files from the archive.
/// </summary>
protected override void ExecuteTask()
{
Stream fs = null;
Stream instream = null;
try {
// ensure archive exists
if (!SrcFile.Exists)
{
throw new BuildException(string.Format(CultureInfo.InvariantCulture,
"Tar file '{0}' does not exist.", SrcFile.FullName),
Location);
}
fs = SrcFile.OpenRead();
// wrap inputstream with corresponding compression method
switch (CompressionMethod)
{
case TarCompressionMethod.GZip:
instream = new GZipInputStream(fs);
break;
case TarCompressionMethod.BZip2:
instream = new BZip2InputStream(fs);
break;
default:
instream = fs;
break;
}
using (TarInputStream s = new TarInputStream(instream)) {
Log(Level.Info, "Expanding '{0}' to '{1}'.",
SrcFile.FullName, DestinationDirectory.FullName);
TarEntry entry;
// extract the file or directory entry
while ((entry = s.GetNextEntry()) != null)
{
if (entry.IsDirectory)
{
ExtractDirectory(s, DestinationDirectory.FullName,
entry.Name, entry.ModTime);
}
else
{
ExtractFile(s, DestinationDirectory.FullName,
entry.Name, entry.ModTime, entry.Size);
}
}
}
} catch (IOException ex) {
throw new BuildException(string.Format(CultureInfo.InvariantCulture,
"Failed to expand '{0}' to '{1}'.", SrcFile.FullName,
DestinationDirectory.FullName), Location, ex);
} catch (TarException ex) {
throw new BuildException(string.Format(CultureInfo.InvariantCulture,
"Invalid tar file '{0}'.", SrcFile.FullName), Location, ex);
} catch (BZip2Exception ex) {
throw new BuildException(string.Format(CultureInfo.InvariantCulture,
"Invalid bzip2'd tar file '{0}'.", SrcFile.FullName), Location, ex);
} catch (GZipException ex) {
throw new BuildException(string.Format(CultureInfo.InvariantCulture,
"Invalid gzipped tar file '{0}'.", SrcFile.FullName), Location, ex);
} finally {
// close the filestream
if (fs != null)
{
fs.Close();
}
}
}