/// <summary>
/// Removes one of many files in storage. It creates a new Zip file.
/// </summary>
/// <param name="zip">
/// Reference to the current Zip object
/// </param>
/// <param name="zfes">
/// List of Entries to remove from storage
/// </param>
/// <returns>
/// True if success, false if not
/// </returns>
/// <remarks>
/// This method only works for storage of type FileStream
/// </remarks>
public static bool RemoveEntries(ref ZipStorer zip, List <ZipFileEntry> zfes)
{
if (!(zip._zipFileStream is FileStream))
{
throw new InvalidOperationException("RemoveEntries is allowed just over streams of type FileStream");
}
// Get full list of entries
List <ZipFileEntry> fullList = zip.ReadCentralDir();
// In order to delete we need to create a copy of the zip file excluding the selected items
string tempZipName = Path.GetTempFileName();
string tempEntryName = Path.GetTempFileName();
try
{
ZipStorer tempZip = 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 = 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);
}
