/// <summary>
/// Pass in either basedir or s, but not both.
/// In other words, you can extract to a stream or to a directory (filesystem), but not both!
/// The Password param is required for encrypted entries.
/// </summary>
private static void InternalExtractToBaseDir(this ZipEntry zipEntry, string baseDir, string password)
{
if (baseDir == null)
{
throw new ArgumentNullException("baseDir");
}
var zipFile = zipEntry.GetZipFile();
// workitem 10355
if (zipFile == null)
{
throw new InvalidOperationException("Use Extract() only with ZipFile.");
}
// get the full filename
var f = ZipEntryInternal.NameInArchive(zipEntry.FileName);
var targetFileName = zipFile.FlattenFoldersOnExtract
? Path.Combine(baseDir, Path.GetFileName(f))
: Path.Combine(baseDir, f);
// workitem 10639
targetFileName = targetFileName.Replace('/', PortablePath.DirectorySeparatorChar);
var fullTargetPath = ZipFileExtensions.GetFullPath(targetFileName);
var fileExistsBeforeExtraction = false;
try
{
// check if it is a directory
if (zipEntry.IsDirectory || zipEntry.FileName.EndsWith("/"))
{
CreateDirectory(fullTargetPath);
goto ExitTry; // all done, caller will return
}
// it is a file, so start the extraction
if (FileSystem.Current.GetFileFromPathAsync(fullTargetPath).ExecuteSync() != null)
{
fileExistsBeforeExtraction = true;
int rc = zipEntry.CheckExtractExistingFile(baseDir, targetFileName);
if (rc == 2)
{
goto ExitTry; // cancel
}
if (rc == 1)
{
return; // do not overwrite
}
}
// set up the output stream
var tmpName = Path.GetRandomFileName();
var tmpPath = Path.Combine(Path.GetDirectoryName(fullTargetPath), tmpName);
var dirName = Path.GetDirectoryName(tmpPath);
// ensure the target path exists
var dir = CreateDirectory(dirName, true);
// extract
var file = dir.CreateFileAsync(tmpPath, CreationCollisionOption.ReplaceExisting).ExecuteSync();
using (var output = file.OpenAsync(FileAccess.ReadAndWrite).ExecuteSync())
{
zipEntry.ExtractWithPassword(output, password);
}
MoveFileInPlace(fileExistsBeforeExtraction, fullTargetPath, tmpPath);
ExitTry :;
}
catch (Exception)
{
zipEntry.SetIOOperationCanceled(true);
throw;
}
finally
{
if (zipEntry.IsIOOperationCanceled() && targetFileName != null)
{
// An exception has occurred. If the file exists, check
// to see if it existed before we tried extracting. If
// it did not, attempt to remove the target file. There
// is a small possibility that the existing file has
// been extracted successfully, overwriting a previously
// existing file, and an exception was thrown after that
// but before final completion (setting times, etc). In
// that case the file will remain, even though some
// error occurred. Nothing to be done about it.
var file = FileSystem.Current.GetFileFromPathAsync(fullTargetPath).ExecuteSync();
if (file != null && !fileExistsBeforeExtraction)
{
file.DeleteAsync();
}
}
}
}
/// <summary>
/// Metoda, ki se pokliče, ko kliknemo na gumb Razširi. Odpre saveFileDialog in prebere kam bomo datoteko
/// shranili.
/// OPOMBA: metoda še ne deluje 100% pravilno.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void BtnExtract_Click(object sender, EventArgs e)
{
filesList = new StringCollection();
FolderBrowserDialog fbd = new FolderBrowserDialog();
if (fileExplorer.SelectedItems.Count > 0 && fbd.ShowDialog() == DialogResult.OK)
{
// Pridobi shranjevalno pot
string savePath = fbd.SelectedPath;
foreach (ListViewItem item in fileExplorer.SelectedItems)
{
string file = item.SubItems[0].Text;
// Preveri katera oblika datoteke je: ZIP, TAR, GZIP ali TAR.BZ2
if (Path.GetExtension(txtPath.Text) == ".zip")
{
ZipFile zip = Ionic.Zip.ZipFile.Read(txtPath.Text);
ZipEntry entry = zip[file];
if (zip[file].UsesEncryption == true)
{
PasswordPrompt passWin = new PasswordPrompt();
passWin.ShowDialog();
zip.Password = passWin.pass;
try
{
entry.ExtractWithPassword(savePath, passWin.pass);
}
catch (BadPasswordException)
{
if (MessageBox.Show("Napačno geslo", "Napaka", MessageBoxButtons.RetryCancel, MessageBoxIcon.Error) == DialogResult.Retry)
{
passWin.ShowDialog();
}
}
}
string enExists = savePath + @"\" + entry.FileName;
if (File.Exists(enExists))
{
if (MessageBox.Show("Datoteka " + file + " že obstaja. Ali jo želite zamenjati?", "Datoteka obstaja", MessageBoxButtons.YesNo, MessageBoxIcon.Information) == DialogResult.Yes)
{
entry.Extract(savePath, ExtractExistingFileAction.OverwriteSilently);
}
else
{
break;
}
}
else
{
entry.Extract(savePath);
}
}
else if (Path.GetExtension(txtPath.Text) == ".tar")
{
byte[] outBuffer = new byte[4096];
TarInputStream tar = new TarInputStream(new FileStream(txtPath.Text, FileMode.Open, FileAccess.Read));
TarEntry curEntry = tar.GetNextEntry();
while (curEntry != null)
{
if (curEntry.Name == file)
{
FileStream fs = new FileStream(savePath + @"\" + curEntry.Name, FileMode.Create, FileAccess.Write);
BinaryWriter bw = new BinaryWriter(fs);
tar.Read(outBuffer, 0, (int)curEntry.Size);
bw.Write(outBuffer, 0, outBuffer.Length);
bw.Close();
}
curEntry = tar.GetNextEntry();
}
tar.Close();
}
else if (Path.GetExtension(txtPath.Text) == ".bz2")
{
Stream str = new FileStream(txtPath.Text, FileMode.Open, FileAccess.Read);
BZip2InputStream bzStr = new BZip2InputStream(str);
TarInputStream tar = new TarInputStream(bzStr);
TarEntry curEntry = tar.GetNextEntry();
while (curEntry != null)
{
if (curEntry.Name == file)
{
byte[] outBuffer = new byte[curEntry.Size];
FileStream fs = new FileStream(savePath + @"\" + curEntry.Name, FileMode.Create, FileAccess.Write);
BinaryWriter bw = new BinaryWriter(fs);
tar.Read(outBuffer, 0, (int)curEntry.Size);
bw.Write(outBuffer, 0, outBuffer.Length);
bw.Close();
}
curEntry = tar.GetNextEntry();
}
tar.Close();
}
else if (Path.GetExtension(txtPath.Text) == ".tgz")
{
Stream str = new FileStream(txtPath.Text, FileMode.Open, FileAccess.Read);
GZipInputStream gzStr = new GZipInputStream(str);
TarInputStream tar = new TarInputStream(gzStr);
TarEntry curEntry = tar.GetNextEntry();
while (curEntry != null)
{
if (curEntry.Name == file)
{
byte[] outBuffer = new byte[curEntry.Size];
FileStream fs = new FileStream(savePath + @"\" + curEntry.Name, FileMode.Create, FileAccess.Write);
BinaryWriter bw = new BinaryWriter(fs);
tar.Read(outBuffer, 0, (int)curEntry.Size);
bw.Write(outBuffer, 0, outBuffer.Length);
bw.Close();
}
curEntry = tar.GetNextEntry();
}
tar.Close();
}
}
}
else
{
MessageBox.Show("Nobena datoteka ni bila izbrana. Prosimo izberite datoteke.", "Napaka", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
