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https://github.com/MidnightCommander/mc
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137 lines
4.4 KiB
Plaintext
137 lines
4.4 KiB
Plaintext
Overview
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========
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uzip is a module for the extfs Virtual File System (VFS) in
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Midnight Commander. It allows browsing, extraction and
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modification of zip archives.
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uzip was written by Oskar Liljeblad. If you find a bug, or know
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of an improvement, please email me at osk@hem.passagen.se.
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License and Copyright
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=====================
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uzip is released under the terms of the GNU General Public License.
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uzip is copyright (C) 2000-2001 by Oskar Liljeblad.
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Requirements
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============
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Info-Zip mode:
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Info-ZIP unzip 5.41 (for listing and extracting files)
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Info-ZIP zip 2.30 (for adding and deleting files)
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otherwise:
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any unzip
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any zip
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History
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=======
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2001-08-07 Oskar Liljeblad <osk@hem.passagen.se>
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* Release 1.4.0.
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* Fixed so that files with filenames containing *, ?, [, ]
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and \\ can be extracted or added to zip archives etc. These
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characters has to be escaped once more, because Info-ZIP zip
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and unzip interprets them as wildcards (despite the fact that
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the shell already expands wildcards).
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2001-03-01 Oskar Liljeblad <osk@hem.passagen.se>
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* Release 1.3.0.
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* Caching of files when listing archives has been fixed. (MC
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would list a directory twice in some cases.)
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* 'strict' is now used. (This is why global variables
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are now initialized using 'my'.)
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* Some code simplifications thanks to more understanding
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of perl :)
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* Minor documentation clarifications.
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2001-02-21 Oskar Liljeblad <osk@hem.passagen.se>
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* Release 1.2.0.
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* The 'rmdir' extfs command of uzip was modified not to fail
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when deleting directories that doesn't exist. (A different/
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better solution would be to recreate the automaticly deleted
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directories, but that's slower and harder to implement.)
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Strangely, the zip man page does not mention this delete-
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empty-directories behavior.
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2000-10-31 Oskar Liljeblad <osk@hem.passagen.se>
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* Release 1.1.0.
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* mczipfs_copyin: Fixed order of arguments.
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* safesystem, safeticks: Improved error handling.
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* mczipfs_copyout: Now allows error code 11, and redirects
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stderr to /dev/null.
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2000-10-29 Oskar Liljeblad <osk@hem.passagen.se>
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* Release 1.0.1.
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* Fixed bug causing files with special permission not to
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be listed.
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2000-10-29 Oskar Liljeblad <osk@hem.passagen.se>
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* Release 1.0.0: First version.
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Differencies between new (Perl) and old (sh/AWK) uzip
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=====================================================
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The script is written purely in Perl, which (hopefully) means
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faster execution and cleaner code.
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Listing is done only with either zipinfo or unzip,
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not both at the same time. Previously unzip would be used
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if the archive contained non-unix file listings (after
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zipinfo was run). Now there is an option to choose which
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one to use (zipinfo is the default and preferred). This
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should make listing of non-unix archives faster.
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Files appearing before their parent directories in the listings
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are now cached and printed later. This fixes a bug that would
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cause some directories to be listed twice.
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Temporary filenames are choosen better. That is, they are
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generated using tmpnam(3). Previously, hardcoded filenames
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(in the current directory) would be used.
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The error messages are much better. Errors are checked for
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(hopefully) all functions that can fail.
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The copyin command no longer makes a copy of the file before
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adding it. Instead it makes a temporary directory in which
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a symlink to the original file is placed. This should speed
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up addition considerably.
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The run command is supported.
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The theoretic commands "mklink" and "linkout" are supported.
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However, MC extfs doesn't support these so they are rather
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useless at the moment.
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Known problems and Unsupported features
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=======================================
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Files added to the archive get listed with a+x permissions in MC.
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This appears to be a problem with the MC extfs, and (probably) not uzip.
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(It is only temporary though. When restarting MC and reading the
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archive, the files will no longer be listed as executable.)
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Extracted files do not have the same modification/access date as
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in the archive. The same applies for permissions and ownership.
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Fortunately MC extfs will set these attributes based on the file
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listings.
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Interpretation of special information ("central-directory extra field")
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in zip archives. This is used to store information such as universal
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time and unix UID/GID on files.
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It would be nice if listing archives with symbolic links was faster.
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Unzip has to be executed once for each link. This is because the
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symbolic link file must be extracted in order to get the link
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destination.
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-
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