/// <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 = ZipStorer.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 = ZipStorer.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;
}
