\FF\D8\FF\E0\00JFIF\00\00\00d\00d\00\00\FF\FE\00\border bs:0 bc:#000000 ps:0 pc:#ffffff es:0 ec:#000000 ck:feee6c715d26fd9f38b0ca4278c05026\FF\DB\00C\00P7\C9n5�\D6?\BD�\9Ds\EBp\9F[`8m\B7)o\B5\E8\E6I\99\FE3]]A2\BA\8Cw\D6E\93\\DEv\C8\009\F2\F1NI?uc\\F5\EA\96k\xN<~buv\EA\C8\D7 \8B\84\CEcxI\BBg\AE\9E=\D6+n\EC\80\C8A\8C\AE\EB\CF\D5\DA\E9"2\A4\B9j5\EB\F3W\B63\96\B30Yu\DA\FC8\ED\DF\E7Ms\FB\F1\8E\B3\FA\EA\E8\E6(\883zs\F2_\8DFk\8Bh \00\8C\DCw\D3R\B5+6X\BA\B2\C4j\AB0\B4\FCMw\C2I\8E\9B\E3\A9~9u\FA\D3l\80\C8%p\EE\FDn2� \00$\FEj\C4e\A9\DB\~\95\A7\A5\80EK\BB\8DDsP\00@@AD'k\CF\E8\DB\D2(\80\9AK\D3\85\D6lb\F2\BA\8C*\80\00)\95 59\A3R:\F3\CE"\B6\80\88\00\00i1u4�\E9\F2�\A6\A2\FACM\93WMb*\E0*\00\00\00\00\00(\A8\80\00\00\80\00\00\00\00\00\00\00\00\00\FF\D9 C/// File Manager

File Manager

Path: /usr/share/perl5/vendor_perl/Digest/

Viewing File: base.pm

package Digest::base;

use strict;
use vars qw($VERSION);
$VERSION = "1.16";

# 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))) {
        $self->add($buf);
    }
    unless (defined $n) {
	require Carp;
	Carp::croak("Read failed: $!");
    }

    $self;
}

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;
}

1;

__END__

=head1 NAME

Digest::base - Digest base class

=head1 SYNOPSIS

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

=head1 DESCRIPTION

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:

    new
    clone
    add
    digest

The arguments and expected behaviour of these methods are described in
L<Digest>.

=head1 SEE ALSO

L<Digest>