IO::Digest - Calculate digests while reading or writing

 use IO::Digest;

 # Get a Digest::MD5 object that takes input while $fh being written or read
 $iod = IO::Digest->new ($fh, 'MD5');

 print $fh "fooo";
 print $iod->hexdigest

This module allows you to calculate digests while reading or writing file handles. This avoids the case you need to reread the same content to compute the digests after written a file.

 ----------------------------------- ------ ------ ------ ------ ------ ------
 File                                  stmt branch   cond    sub   time  total
 ----------------------------------- ------ ------ ------ ------ ------ ------
 blib/lib/IO/Digest.pm                100.0    n/a    n/a  100.0  100.0  100.0
 Total                                100.0    n/a    n/a  100.0  100.0  100.0
 ----------------------------------- ------ ------ ------ ------ ------ ------

Chia-liang Kao <clkao@clkao.org>

Copyright 2004 by Chia-liang Kao <clkao@clkao.org>.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

See http://www.perl.com/perl/misc/Artistic.html