Is it possible to rename and delete file(s) or folder(s) in ZIP?

[coder2999]

Hello wqweto,

First, thanks for your great project!

I just want to ask, is it possible to rename and delete file(s) or folder(s) in ZIP file without decompression?

Thank you in advance.

[wqweto]

Yes, it is possible to rename/delete files from an archive without recompression.

Take a look at vbzip sample project (under test directory) which implements d command to delete files from archive:

VbZip 0.3.2 (c) 2017-2025 by wqweto@gmail.com (thunk 12.1.2018 17:15:52)

Usage: vbzip.exe <command> [-options...] <archive_file> [files]...
e.g. vbzip.exe a backup.zip doc1.txt reports*.xls

Commands:
  a           add files to archive
  d           delete files from archive
  l           list archive contents
  t           test archive integrity
  x           extract files from archive

Options:
  -r          recurse subfolders
  -e          include empty folders
  -m LEVEL    compression level [default: 6]
  -o OUTPUT   output folder/file to extract to
  -i          no percentage indicator
  -y          assume yes to all questions
  -p PASSWORD password used to encrypt/decrypt files
  -mem METHOD encryption method [default: 0]
              0=ZipCrypto, 1=AES-128, 2=AES-192, 3=AES-256
  -so         output to stdout
  -si NAME    input from stdin zip to NAME in archive
  -mcu        use UTF-8 for archive filenames
  -mcl        use local codepage for archive filenames
  -mcp CPAGE  codepage for archive filenames [default: 437]
  -mzip64     always use Zip64 extension

For delete command the idea is that you can create a new destination ZIP archive and copy remaining (non-deleted) entries from the source ZIP archive without recompression.

For rename you can also change name of one or more entries while copying these from the source archive.