/// <summary>
///
/// </summary>
/// <param name="_stream"></param>
/// <param name="_access"></param>
/// <returns></returns>
/// <exception cref="InvalidOperationException"></exception>
/// <exception cref="InvalidDataException"></exception>
public static Redline Open(Stream _stream, FileAccess _access)
{
if (!_stream.CanSeek && _access != FileAccess.Read)
throw new InvalidOperationException("Stream cannot seek.");
Redline zip = new Redline();
zip.ZipFileStream = _stream;
zip.Access = _access;
if (zip.ReadFileInfo())
return zip;
throw new System.IO.InvalidDataException();
}
/// <summary>
///
/// </summary>
/// <param name="_zip"></param>
/// <param name="_zfes"></param>
/// <returns></returns>
/// <exception cref="InvalidOperationException"></exception>
public static bool RemoveEntries(ref Redline _zip, List<ZipFileEntry> _zfes)
{
if (!(_zip.ZipFileStream is FileStream))
throw new InvalidOperationException("RemoveEntries is only allowed to be used over FileStream type streams.");
List<ZipFileEntry> fullList = _zip.ReadCentralDir();
string tempZipName = Path.GetTempFileName();
string tempEntryName = Path.GetTempFileName();
try
{
Redline tempZip = Redline.Create(tempZipName, string.Empty);
foreach (ZipFileEntry zfe in fullList)
{
if (!_zfes.Contains(zfe))
{
if (_zip.ExtractFile(zfe, tempEntryName))
{
tempZip.AddFile(zfe.Method, tempEntryName, zfe.FilenameInZip, zfe.Comment);
}
}
}
_zip.Close();
tempZip.Close();
File.Delete(_zip.FileName);
File.Move(tempZipName, _zip.FileName);
_zip = Redline.Open(_zip.FileName, _zip.Access);
}
catch
{
return false;
}
finally
{
if (File.Exists(tempZipName))
File.Delete(tempZipName);
if (File.Exists(tempEntryName))
File.Delete(tempEntryName);
}
return true;
}
/// <summary>
///
/// </summary>
/// <param name="_stream"></param>
/// <param name="_comment"></param>
/// <returns></returns>
public static Redline Create(Stream _stream, string _comment)
{
Redline zip = new Redline();
zip.Comment = _comment;
zip.ZipFileStream = _stream;
zip.Access = FileAccess.Write;
return zip;
}
