dslinux/user/perl/lib/Digest Changes base.pm file.pm

cayenne dslinux_cayenne at user.in-berlin.de
Tue Dec 5 05:27:07 CET 2006

Update of /cvsroot/dslinux/dslinux/user/perl/lib/Digest
In directory antilope:/tmp/cvs-serv7729/lib/Digest

Added Files:
	Changes base.pm file.pm 
Log Message:
Adding fresh perl source to HEAD to branch from

--- NEW FILE: base.pm ---
package Digest::base;

use strict;
use vars qw($VERSION);
$VERSION = "1.00";

# subclass is supposed to implement at least these
sub new;
sub clone;
sub add;
sub digest;

sub reset {
    my $self = shift;
    $self->new(@_);  # ugly

sub addfile {
    my ($self, $handle) = @_;

    my $n;
    my $buf = "";

    while (($n = read($handle, $buf, 4*1024))) {
    unless (defined $n) {
	require Carp;
	Carp::croak("Read failed: $!");


sub add_bits {
    my $self = shift;
    my $bits;
    my $nbits;
    if (@_ == 1) {
	my $arg = shift;
	$bits = pack("B*", $arg);
	$nbits = length($arg);
    else {
	($bits, $nbits) = @_;
    if (($nbits % 8) != 0) {
	require Carp;
	Carp::croak("Number of bits must be multiple of 8 for this algorithm");
    return $self->add(substr($bits, 0, $nbits/8));

sub hexdigest {
    my $self = shift;
    return unpack("H*", $self->digest(@_));

sub b64digest {
    my $self = shift;
    require MIME::Base64;
    my $b64 = MIME::Base64::encode($self->digest(@_), "");
    $b64 =~ s/=+$//;
    return $b64;



=head1 NAME

Digest::base - Digest base class


  package Digest::Foo;
  use base 'Digest::base';


The C<Digest::base> class provide implementations of the methods
C<addfile> and C<add_bits> in terms of C<add>, and of the methods
C<hexdigest> and C<b64digest> in terms of C<digest>.

Digest implementations might want to inherit from this class to get
this implementations of the alternative I<add> and I<digest> methods.
A minimal subclass needs to implement the following methods by itself:


The arguments and expected behaviour of these methods are described in

=head1 SEE ALSO


--- NEW FILE: file.pm ---
package Digest::file;

use strict;

use Exporter ();
use Carp qw(croak);
use Digest ();

use vars qw($VERSION @ISA @EXPORT_OK);

$VERSION = "1.00";
@ISA = qw(Exporter);
@EXPORT_OK = qw(digest_file_ctx digest_file digest_file_hex digest_file_base64);

sub digest_file_ctx {
    my $file = shift;
    croak("No digest algorithm specified") unless @_;
    local *F;
    open(F, $file) || croak("Can't open '$file': $!");
    my $ctx = Digest->new(@_);
    return $ctx;

sub digest_file {

sub digest_file_hex {

sub digest_file_base64 {



=head1 NAME

Digest::file - Calculate digests of files


  # Poor mans "md5sum" command
  use Digest::file qw(digest_file_hex);
  for (@ARGV) {
      print digest_file_hex($_, "MD5"), "  $_\n";


This module provide 3 convenience functions to calculate the digest
of files.  The following functions are provided:


=item digest_file( $file, $algorithm, [$arg,...] )

This function will calculate and return the binary digest of the bytes
of the given file.  The function will croak if it fails to open or
read the file.

The $algorithm is a string like "MD2", "MD5", "SHA-1", "SHA-512".
Additional arguments are passed to the constructor for the
implementation of the given algorithm.

=item digest_file_hex( $file, $algorithm, [$arg,...] )

Same as digest_file(), but return the digest in hex form.

=item digest_file_base64( $file, $algorithm, [$arg,...] )

Same as digest_file(), but return the digest as a base64 encoded


=head1 SEE ALSO


--- NEW FILE: Changes ---
2005-11-26   Gisle Aas <gisle at ActiveState.com>

   Release 1.14

   Documentation tweaks.

2005-10-18   Gisle Aas <gisle at ActiveState.com>

   Release 1.13

   Fixed documentation typo.

2005-09-29   Gisle Aas <gisle at ActiveState.com>

   Release 1.12

   Fix documentation typo.  Patch by <steve at fisharerojo.org>.

2005-09-11   Gisle Aas <gisle at ActiveState.com>

   Release 1.11

   Make Digest->new("SHA-224") work.  Patch by Mark Shelor
   <shelor at cpan.org>.

2004-11-08   Gisle Aas <gisle at ActiveState.com>

   Release 1.10

   Added Digest::file module which provide convenience functions
   that calculate digests of files.

2004-11-05   Gisle Aas <gisle at ActiveState.com>

   Release 1.09

   Fix trivial documentation typo.

2004-04-29   Gisle Aas <gisle at ActiveState.com>

   Release 1.08

   Make Digest->new("CRC-16"), Digest->new("CRC-32") and
   Digest->new("CRC-CCITT") work.
   Patch by Oliver Maul <oliver at maul.tv>.

2004-04-25   Gisle Aas <gisle at ActiveState.com>

   Release 1.07

   Updated benchmark.

2004-04-01   Gisle Aas <gisle at ActiveState.com>

   Release 1.06

   Added MIME::Base64 dependency.

   Minor doc tweak.

2003-12-01   Gisle Aas <gisle at ActiveState.com>

   Release 1.05

   Drop Digest::MD5 dependency.  Avoids circular dependency
   now that Digest::MD5 depend on this package to inherit

   Included a section about digest speed with benchmark
   results for some implementations of this API.

2003-11-29   Gisle Aas <gisle at ActiveState.com>

   Release 1.04

   Doc tweaks to unconfuse search.cpan.org.

2003-11-28   Gisle Aas <gisle at ActiveState.com>

   Release 1.03

   Added add_bits() method as requested by the
   Digest::SHA author Mark Shelor.

   Added Digest::base class that Digest implementations
   can use to get default implementations of addfile(),
   add_bits(), hexdigest() and b64digest().

   Digest->new("SHA-256") and similar should work now
   given that you have either Digest::SHA or Digest::SHA2

2003-01-18   Gisle Aas <gisle at ActiveState.com>

   Release 1.02

   Sync up with version bundled with perl-5.8.
   Patch by Jarkko Hietaniemi <jhi at iki.fi>.

   Override INSTALLDIRS for 5.8 as suggested by
   Guido Ostkamp <Guido.Ostkamp at t-online.de>.

2003-01-04   Gisle Aas <gisle at ActiveState.com>

   Release 1.01

   Document the clone() method.

2001-03-13   Gisle Aas <gisle at ActiveState.com>

   Release 1.00

   Broken out of the Digest-MD5-2.12 distribution and made into
   a separate dist.

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