1Crypt::Random::Source::UBsaesre:C:oHnatnrdilbeu(t3e)d PeCrrlypDto:c:uRmaenndtoamt:i:oSnource::Base::Handle(3)
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NAME

6       Crypt::Random::Source::Base::Handle - IO::Handle based random data
7       sources
8

SYNOPSIS

10           use Moose;
11           extends qw(Crypt::Random::Source::Base::Handle);
12
13           sub open_handle {
14               # invoked as needed
15           }
16
17
18           # this class can also be used directly
19           Crypt::Random::Source::Base::Handle->new( handle => $file_handle );
20
21
22           # it supports some standard methods:
23
24           $p->blocking(0);
25
26           $p->read( my $buf, $n ); # no error handling here
27

DESCRIPTION

29       This is a concrete base class for all IO::Handle based random data
30       sources.
31
32       It implements error handling
33

ATTRIBUTES

35   handle
36       An IO::Handle or file handle to read from.
37
38   blocking
39       This is actually handled by "handle", and is documented in IO::Handle.
40
41   allow_under_read
42       Whether or not under reading is considered an error.
43
44       Defaults to false.
45
46   reread_attempts
47       The number of attempts to make at rereading if the handle did not
48       provide enough bytes on the first attempt.
49
50       Defaults to 1.
51
52       Only used if "allow_under_read" is enabled.
53

METHODS

55   get
56       See "get" in Crypt::Random::Source::Base.
57
58       When "blocking" or "allow_under_read" are set to a true value this
59       method may return fewer bytes than requested.
60
61   read
62       This delegates directly to "handle".
63
64       It DOES NOT provide the same validation as "get" would have, so no
65       checking for underreads is done.
66
67   close
68       Close the handle and clear it.
69
70   _read
71       "$self->handle->read" but with additional error checking and different
72       calling conventions.
73
74   _read_too_short
75       Called by "_read" when not enough data was read from the handle.
76       Normally it will either die with an error or attempt to reread. When
77       "allow_under_read" is true it will just return the partial buffer.
78
79   open_handle
80       Abstract method, should return an IO::Handle to use.
81

AUTHOR

83         Yuval Kogman <nothingmuch@woobling.org>
84

86       This software is copyright (c) 2011 by Yuval Kogman.
87
88       This is free software; you can redistribute it and/or modify it under
89       the same terms as the Perl 5 programming language system itself.
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93perl v5.12.3                      2011-01C-r0y5pt::Random::Source::Base::Handle(3)
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