| File | /usr/local/lib/perl5/5.10.1/Digest/base.pm |
| Statements Executed | 8 |
| Statement Execution Time | 978µs |
| Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
|---|---|---|---|---|---|
| 1 | 1 | 1 | 14µs | 17µs | Digest::base::BEGIN@3 |
| 1 | 1 | 1 | 6µs | 25µs | Digest::base::BEGIN@4 |
| 0 | 0 | 0 | 0s | 0s | Digest::base::add_bits |
| 0 | 0 | 0 | 0s | 0s | Digest::base::addfile |
| 0 | 0 | 0 | 0s | 0s | Digest::base::b64digest |
| 0 | 0 | 0 | 0s | 0s | Digest::base::hexdigest |
| 0 | 0 | 0 | 0s | 0s | Digest::base::reset |
| Line | State ments |
Time on line |
Calls | Time in subs |
Code |
|---|---|---|---|---|---|
| 1 | package Digest::base; | ||||
| 2 | |||||
| 3 | 3 | 24µs | 2 | 20µs | # spent 17µs (14+3) within Digest::base::BEGIN@3 which was called
# once (14µs+3µs) by SimpleDB::Client::BEGIN@47 at line 3 # spent 17µs making 1 call to Digest::base::BEGIN@3
# spent 3µs making 1 call to strict::import |
| 4 | 3 | 942µs | 2 | 43µs | # spent 25µs (6+18) within Digest::base::BEGIN@4 which was called
# once (6µs+18µs) by SimpleDB::Client::BEGIN@47 at line 4 # spent 25µs making 1 call to Digest::base::BEGIN@4
# spent 18µs making 1 call to vars::import |
| 5 | 1 | 3µs | $VERSION = "1.16"; | ||
| 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 | 10µs | 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> |