ZIPDETAILS(1) Perl Programmers Reference Guide ZIPDETAILS(1)NAME
zipdetails - display the internal structure of zip files
SYNOPSIS
zipdetaile [-v] zipfile.zip
zipdetails -h
DESCRIPTION
Zipdetails displays information about the internal record structure of the zip file. It is not concerned with displaying any details of the
compressed data stored in the zip file.
The program assumes prior understanding of the internal structure of a Zip file. You should have a copy of the Zip APPNOTE file at hand to
help understand the output from this program ("SEE ALSO" for details).
OPTIONS
-v Enable Verbose mode
-h Display help
By default zipdetails will output the details of the zip file in three columns.
Column 1
This contains the offset from the start of the file in hex.
Column 2
This contains a textual description of the field.
Column 3
If the field contains a numeric value it will be displayed in hex. Zip stored most numbers in little-endian format - the value
displayed will have the little-endian encoding removed.
Next, is an optional description of what the value means.
If the "-v" option is present, column 1 is expanded to include
o The offset from the start of the file in hex.
o The length of the filed in hex.
o A hex dump of the bytes in field in the order they are stored in the zip file.
TODO
Error handling is still a work in progress. If the program encounters a problem reading a zip file it is likely to terminate with an
unhelpful error message.
SEE ALSO
The primary reference for Zip files is the "appnote" document available at <http://www.pkware.com/documents/casestudies/APPNOTE.TXT>.
An alternative is the Info-Zip appnote. This is available from <ftp://ftp.info-zip.org/pub/infozip/doc/>
The "zipinfo" program that comes with the info-zip distribution (<http://www.info-zip.org/>) can also display details of the structure of a
zip file.
See also IO::Compress::Zip, IO::Uncompress::Unzip.
AUTHOR
Paul Marquess pmqs@cpan.org.
COPYRIGHT
Copyright (c) 2011-2012 Paul Marquess. All rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.18.2 2018-08-17 ZIPDETAILS(1)
Check Out this Related Man Page
Archive::Zip::MemberRead(3) User Contributed Perl Documentation Archive::Zip::MemberRead(3)NAME
Archive::Zip::MemberRead - A wrapper that lets you read Zip archive members as if they were files.
SYNOPSIS
use Archive::Zip;
use Archive::Zip::MemberRead;
$zip = Archive::Zip->new("file.zip");
$fh = Archive::Zip::MemberRead->new($zip, "subdir/abc.txt");
while (defined($line = $fh->getline()))
{
print $fh->input_line_number . "#: $line
";
}
$read = $fh->read($buffer, 32*1024);
print "Read $read bytes as :$buffer:
";
DESCRIPTION
The Archive::Zip::MemberRead module lets you read Zip archive member data just like you read data from files.
METHODS
Archive::Zip::Member::readFileHandle()
You can get a "Archive::Zip::MemberRead" from an archive member by calling "readFileHandle()":
my $member = $zip->memberNamed('abc/def.c');
my $fh = $member->readFileHandle();
while (defined($line = $fh->getline()))
{
# ...
}
$fh->close();
Archive::Zip::MemberRead->new($zip, $fileName)
Archive::Zip::MemberRead->new($zip, $member)
Archive::Zip::MemberRead->new($member)
Construct a new Archive::Zip::MemberRead on the specified member.
my $fh = Archive::Zip::MemberRead->new($zip, 'fred.c')
setLineEnd(expr)
Set the line end character to use. This is set to
by default except on Windows systems where it is set to
. You will only need
to set this on systems which are not Windows or Unix based and require a line end diffrent from
. This is a class method so call as
"Archive::Zip::MemberRead"->"setLineEnd($nl)"
rewind()
Rewinds an "Archive::Zip::MemberRead" so that you can read from it again starting at the beginning.
input_record_separator(expr)
If the argumnet is given, input_record_separator for this instance is set to it. The current setting (which may be the global $/) is
always returned.
input_line_number()
Returns the current line number, but only if you're using "getline()". Using "read()" will not update the line number.
close()
Closes the given file handle.
buffer_size([ $size ])
Gets or sets the buffer size used for reads. Default is the chunk size used by Archive::Zip.
getline()
Returns the next line from the currently open member. Makes sense only for text files. A read error is considered fatal enough to
die. Returns undef on eof. All subsequent calls would return undef, unless a rewind() is called. Note: The line returned has the
input_record_separator (default: newline) removed.
read($buffer, $num_bytes_to_read)
Simulates a normal "read()" system call. Returns the no. of bytes read. "undef" on error, 0 on eof, e.g.:
$fh = Archive::Zip::MemberRead->new($zip, "sreeji/secrets.bin");
while (1)
{
$read = $fh->read($buffer, 1024);
die "FATAL ERROR reading my secrets !
" if (!defined($read));
last if (!$read);
# Do processing.
....
}
AUTHOR
Sreeji K. Das, <sreeji_k@yahoo.com> See Archive::Zip by Ned Konz without which this module does not make any sense!
Minor mods by Ned Konz.
COPYRIGHT
Copyright 2002 Sreeji K. Das.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.12.1 2009-06-30 Archive::Zip::MemberRead(3)