module Compress::Zip
¶
The Compress::Zip module contains readers and writers of the zip file format, described at PKWARE's site.
Reading zip files¶
Two types are provided to read from zip files:
* Compress::Zip::File: can read zip entries from a File or from an IO::Memory
and provides random read access to its entries.
* Compress::Zip::Reader: can only read zip entries sequentially from any IO.
Compress::Zip::File is the preferred method to read zip files if you
can provide a File, because it's a bit more flexible and provides
more complete information for zip entries (such as comments).
When reading zip files, CRC32 checksum values are automatically
verified when finishing reading an entry, and Compress::Zip::Error will
be raised if the computed CRC32 checksum does not match.
Writer zip files¶
Use Compress::Zip::Writer, which writes zip entries sequentially to
any IO.
Note
only compression methods 0 (STORED) and 8 (DEFLATED) are supported. Additionally, ZIP64 is not yet supported.