| File | /opt/wise/lib/perl5/5.10.0/Digest/base.pm | Statements Executed | 8 | Total Time | 0.00041 seconds |
| Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine | |
|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | Digest::base:: | BEGIN |
| 0 | 0 | 0 | 0 | 0 | Digest::base:: | add_bits |
| 0 | 0 | 0 | 0 | 0 | Digest::base:: | addfile |
| 0 | 0 | 0 | 0 | 0 | Digest::base:: | b64digest |
| 0 | 0 | 0 | 0 | 0 | Digest::base:: | hexdigest |
| 0 | 0 | 0 | 0 | 0 | Digest::base:: | reset |
| Line | Stmts. | Exclusive Time | Avg. | Code |
|---|---|---|---|---|
| 1 | package Digest::base; | |||
| 2 | ||||
| 3 | 3 | 4.3e-5 | 1.4e-5 | use strict; # spent 9µs making 1 call to strict::import |
| 4 | 3 | 0.00036 | 0.00012 | use vars qw($VERSION); # spent 25µs making 1 call to vars::import |
| 5 | 1 | 1.0e-6 | 1.0e-6 | $VERSION = "1.00"; |
| 6 | ||||
| 7 | # subclass is supposed to implement at least these | |||
| 8 | sub new; | |||
| 9 | sub clone; | |||
| 10 | sub add; | |||
| 11 | sub digest; | |||
| 12 | ||||
| 13 | sub reset { | |||
| 14 | my $self = shift; | |||
| 15 | $self->new(@_); # ugly | |||
| 16 | } | |||
| 17 | ||||
| 18 | sub addfile { | |||
| 19 | my ($self, $handle) = @_; | |||
| 20 | ||||
| 21 | my $n; | |||
| 22 | my $buf = ""; | |||
| 23 | ||||
| 24 | while (($n = read($handle, $buf, 4*1024))) { | |||
| 25 | $self->add($buf); | |||
| 26 | } | |||
| 27 | unless (defined $n) { | |||
| 28 | require Carp; | |||
| 29 | Carp::croak("Read failed: $!"); | |||
| 30 | } | |||
| 31 | ||||
| 32 | $self; | |||
| 33 | } | |||
| 34 | ||||
| 35 | sub add_bits { | |||
| 36 | my $self = shift; | |||
| 37 | my $bits; | |||
| 38 | my $nbits; | |||
| 39 | if (@_ == 1) { | |||
| 40 | my $arg = shift; | |||
| 41 | $bits = pack("B*", $arg); | |||
| 42 | $nbits = length($arg); | |||
| 43 | } | |||
| 44 | else { | |||
| 45 | ($bits, $nbits) = @_; | |||
| 46 | } | |||
| 47 | if (($nbits % 8) != 0) { | |||
| 48 | require Carp; | |||
| 49 | Carp::croak("Number of bits must be multiple of 8 for this algorithm"); | |||
| 50 | } | |||
| 51 | return $self->add(substr($bits, 0, $nbits/8)); | |||
| 52 | } | |||
| 53 | ||||
| 54 | sub hexdigest { | |||
| 55 | my $self = shift; | |||
| 56 | return unpack("H*", $self->digest(@_)); | |||
| 57 | } | |||
| 58 | ||||
| 59 | sub b64digest { | |||
| 60 | my $self = shift; | |||
| 61 | require MIME::Base64; | |||
| 62 | my $b64 = MIME::Base64::encode($self->digest(@_), ""); | |||
| 63 | $b64 =~ s/=+$//; | |||
| 64 | return $b64; | |||
| 65 | } | |||
| 66 | ||||
| 67 | 1 | 3.0e-6 | 3.0e-6 | 1; |
| 68 | ||||
| 69 | __END__ | |||
| 70 | ||||
| 71 | =head1 NAME | |||
| 72 | ||||
| 73 | Digest::base - Digest base class | |||
| 74 | ||||
| 75 | =head1 SYNOPSIS | |||
| 76 | ||||
| 77 | package Digest::Foo; | |||
| 78 | use base 'Digest::base'; | |||
| 79 | ||||
| 80 | =head1 DESCRIPTION | |||
| 81 | ||||
| 82 | The C<Digest::base> class provide implementations of the methods | |||
| 83 | C<addfile> and C<add_bits> in terms of C<add>, and of the methods | |||
| 84 | C<hexdigest> and C<b64digest> in terms of C<digest>. | |||
| 85 | ||||
| 86 | Digest implementations might want to inherit from this class to get | |||
| 87 | this implementations of the alternative I<add> and I<digest> methods. | |||
| 88 | A minimal subclass needs to implement the following methods by itself: | |||
| 89 | ||||
| 90 | new | |||
| 91 | clone | |||
| 92 | add | |||
| 93 | digest | |||
| 94 | ||||
| 95 | The arguments and expected behaviour of these methods are described in | |||
| 96 | L<Digest>. | |||
| 97 | ||||
| 98 | =head1 SEE ALSO | |||
| 99 | ||||
| 100 | L<Digest> |