zip.file.extract            package:base            R Documentation

Extract File from a Zip Archive

Description:

     This will extract the file named `file' from the zip archive, if
     possible, and write it in a temporary location.

Usage:

     zip.file.extract(file, zipname="R.zip")

Arguments:

    file: A file name.

 zipname: The file name of a `zip' archive.

Details:

     The file will be extracted if it is in the archive and any
     required `unzip' utility is available. It will probably be
     extracted to the directory used by `tempfile'.

Value:

     The name of the original or extracted file.

Warning:

     This function is intended for internal use only: it may be altered
     at any time, and may differ between platforms. Do NOT use in user
     code.

Note:

     The implementation differs by platform: it might do nothing.

Author(s):

     B. D. Ripley

