165 lines
3.9 KiB
HTML
165 lines
3.9 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML><HEAD><TITLE>Man page of ZIPDETAILS</TITLE>
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</HEAD><BODY>
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<H1>ZIPDETAILS</H1>
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Section: Perl Programmers Reference Guide (1)<BR>Updated: 2020-10-19<BR><A HREF="#index">Index</A>
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<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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zipdetails - display the internal structure of zip files
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<PRE>
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zipdetails [-v] zipfile.zip
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zipdetails -h
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</PRE>
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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Zipdetails displays information about the internal record structure of the
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zip file. It is not concerned with displaying any details of the compressed
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data stored in the zip file.
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<P>
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The program assumes prior understanding of the internal structure of a Zip
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file. You should have a copy of the Zip <FONT SIZE="-1">APPNOTE</FONT> file at hand to help
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understand the output from this program (``<FONT SIZE="-1">SEE ALSO''</FONT> for details).
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<A NAME="lbAE"> </A>
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<H3><FONT SIZE="-1">OPTIONS</FONT></H3>
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<DL COMPACT>
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<DT id="1">-v<DD>
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Enable Verbose mode
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<DT id="2">-h<DD>
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Display help
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</DL>
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<P>
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By default zipdetails will output the details of the zip file in three
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columns.
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<DL COMPACT>
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<DT id="3">Column 1<DD>
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This contains the offset from the start of the file in hex.
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<DT id="4">Column 2<DD>
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This contains a textual description of the field.
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<DT id="5">Column 3<DD>
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If the field contains a numeric value it will be displayed in hex. Zip
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stored most numbers in little-endian format - the value displayed will have
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the little-endian encoding removed.
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<P>
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Next, is an optional description of what the value means.
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</DL>
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<P>
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If the <TT>"-v"</TT> option is present, column 1 is expanded to include
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<DL COMPACT>
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<DT id="6">•<DD>
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The offset from the start of the file in hex.
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<DT id="7">•<DD>
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The length of the filed in hex.
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<DT id="8">•<DD>
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A hex dump of the bytes in field in the order they are stored in the zip
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file.
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</DL>
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<A NAME="lbAF"> </A>
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<H2>TODO</H2>
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Error handling is still a work in progress. If the program encounters a
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problem reading a zip file it is likely to terminate with an unhelpful
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error message.
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<A NAME="lbAG"> </A>
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<H2>SEE ALSO</H2>
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The primary reference for Zip files is the ``appnote'' document available at
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<<A HREF="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">http://www.pkware.com/documents/casestudies/APPNOTE.TXT</A>>.
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<P>
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An alternative reference is the Info-Zip appnote. This is available from
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<<A HREF="ftp://ftp.info-zip.org/pub/infozip/doc/">ftp://ftp.info-zip.org/pub/infozip/doc/</A>>
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<P>
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The <TT>"zipinfo"</TT> program that comes with the info-zip distribution
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(<<A HREF="http://www.info-zip.org/">http://www.info-zip.org/</A>>) can also display details of the structure of
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a zip file.
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<P>
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See also Archive::Zip::SimpleZip, IO::Compress::Zip,
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IO::Uncompress::Unzip.
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<A NAME="lbAH"> </A>
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<H2>AUTHOR</H2>
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Paul Marquess <I><A HREF="mailto:pmqs@cpan.org">pmqs@cpan.org</A></I>.
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<A NAME="lbAI"> </A>
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<H2>COPYRIGHT</H2>
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Copyright (c) 2011-2018 Paul Marquess. All rights reserved.
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<P>
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This program is free software; you can redistribute it and/or modify it
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under the same terms as Perl itself.
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<P>
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT id="9"><A HREF="#lbAB">NAME</A><DD>
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<DT id="10"><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT id="11"><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DL>
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<DT id="12"><A HREF="#lbAE"><FONT SIZE="-1">OPTIONS</FONT></A><DD>
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</DL>
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<DT id="13"><A HREF="#lbAF">TODO</A><DD>
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<DT id="14"><A HREF="#lbAG">SEE ALSO</A><DD>
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<DT id="15"><A HREF="#lbAH">AUTHOR</A><DD>
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<DT id="16"><A HREF="#lbAI">COPYRIGHT</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="/cgi-bin/man/man2html">man2html</A>,
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using the manual pages.<BR>
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Time: 00:05:31 GMT, March 31, 2021
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</BODY>
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</HTML>
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