oracular (3) Crypt::Random::Source::Base::Handle.3pm.gz

Provided by: libcrypt-random-source-perl_0.14-2_all bug

NAME
       Crypt::Random::Source::Base::Handle - IO::Handle based random data sources


VERSION
       version 0.14


SYNOPSIS
           use Moo;
           extends qw(Crypt::Random::Source::Base::Handle);

           sub open_handle {
               # invoked as needed
           }

           # this class can also be used directly
           Crypt::Random::Source::Base::Handle->new( handle => $file_handle );

           # it supports some standard methods:

           $p->blocking(0);

           $p->read( my $buf, $n ); # no error handling here


DESCRIPTION
       This is a concrete base class for all IO::Handle based random data sources.

       It implements error handling


ATTRIBUTES
   handle
       An IO::Handle or file handle to read from.

   blocking
       This is actually handled by "handle", and is documented in IO::Handle.

   allow_under_read
       Whether or not under reading is considered an error.

       Defaults to false.

   reread_attempts
       The number of attempts to make at rereading if the handle did not provide enough bytes on the first
       attempt.

       Defaults to 1.

       Only used if "allow_under_read" is enabled.


METHODS
   get
       See "get" in Crypt::Random::Source::Base.

       When "blocking" or "allow_under_read" are set to a true value this method may return fewer bytes than
       requested.

   read
       This delegates directly to "handle".

       It DOES NOT provide the same validation as "get" would have, so no checking for underreads is done.

   close
       Close the handle and clear it.

   _read
       "$self->handle->read" but with additional error checking and different calling conventions.

   _read_too_short
       Called by "_read" when not enough data was read from the handle. Normally it will either die with an
       error or attempt to reread. When "allow_under_read" is true it will just return the partial buffer.

   open_handle
       Abstract method, should return an IO::Handle to use.


SUPPORT
       Bugs may be submitted through the RT bug tracker
       <https://rt.cpan.org/Public/Dist/Display.html?Name=Crypt-Random-Source> (or
       bug-Crypt-Random-Source@rt.cpan.org <mailto:bug-Crypt-Random-Source@rt.cpan.org>).


AUTHOR
       XXXX XXX'XX (Yuval Kogman) <nothingmuch@woobling.org>


       This software is copyright (c) 2008 by Yuval Kogman.

       This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5
       programming language system itself.