private void ExtractEntry(ZipEntry entry)
{
bool doExtraction = entry.IsCompressionMethodSupported();
string targetName = entry.Name;
if (doExtraction)
{
if (entry.IsFile)
{
targetName = extractNameTransform_.TransformFile(targetName);
}
else if (entry.IsDirectory)
{
targetName = extractNameTransform_.TransformDirectory(targetName);
}
doExtraction = !(string.IsNullOrEmpty(targetName));
}
// TODO: Fire delegate/throw exception were compression method not supported, or name is invalid?
string dirName = null;
if (doExtraction)
{
if (entry.IsDirectory)
{
dirName = targetName;
}
else
{
dirName = Path.GetDirectoryName(Path.GetFullPath(targetName));
}
}
if (doExtraction && !Directory.Exists(dirName))
{
if (!entry.IsDirectory || CreateEmptyDirectories)
{
try
{
Directory.CreateDirectory(dirName);
}
catch (Exception ex)
{
doExtraction = false;
if (events_ != null)
{
if (entry.IsDirectory)
{
continueRunning_ = events_.OnDirectoryFailure(targetName, ex);
}
else
{
continueRunning_ = events_.OnFileFailure(targetName, ex);
}
}
else
{
continueRunning_ = false;
throw;
}
}
}
}
if (doExtraction && entry.IsFile)
{
ExtractFileEntry(entry, targetName);
}
}
private void ExtractFileEntry(ZipEntry entry, string targetName)
{
bool proceed = true;
if (overwrite_ != Overwrite.Always)
{
if (File.Exists(targetName))
{
if ((overwrite_ == Overwrite.Prompt) && (confirmDelegate_ != null))
{
proceed = confirmDelegate_(targetName);
}
else
{
proceed = false;
}
}
}
if (proceed)
{
if (events_ != null)
{
continueRunning_ = events_.OnProcessFile(entry.Name);
}
if (continueRunning_)
{
try
{
using (FileStream outputStream = File.Create(targetName))
{
if (buffer_ == null)
{
buffer_ = new byte[4096];
}
if ((events_ != null) && (events_.Progress != null))
{
StreamUtils.Copy(zipFile_.GetInputStream(entry), outputStream, buffer_,
events_.Progress, events_.ProgressInterval, this, entry.Name, entry.Size);
}
else
{
StreamUtils.Copy(zipFile_.GetInputStream(entry), outputStream, buffer_);
}
if (events_ != null)
{
continueRunning_ = events_.OnCompletedFile(entry.Name);
}
}
if (restoreDateTimeOnExtract_)
{
File.SetLastWriteTime(targetName, entry.DateTime);
}
if (RestoreAttributesOnExtract && entry.IsDOSEntry && (entry.ExternalFileAttributes != -1))
{
var fileAttributes = (FileAttributes)entry.ExternalFileAttributes;
// TODO: FastZip - Setting of other file attributes on extraction is a little trickier.
fileAttributes &= (FileAttributes.Archive | FileAttributes.Normal | FileAttributes.ReadOnly | FileAttributes.Hidden);
File.SetAttributes(targetName, fileAttributes);
}
}
catch (Exception ex)
{
if (events_ != null)
{
continueRunning_ = events_.OnFileFailure(targetName, ex);
}
else
{
continueRunning_ = false;
throw;
}
}
}
}
}