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# Copyright (C) 2002-2004, 2012 Elizabeth Mattijsen. All rights reserved.
# Copyright (C) 2015 Steve Hay. All rights reserved.
# This module is free software; you can redistribute it and/or modify it under
# the same terms as Perl itself, i.e. under the terms of either the GNU General
# Public License or the Artistic License, as specified in the F<LICENCE> file.
package PerlIO::via::QuotedPrint;
use 5.008001;
# be as strict as possible
use strict;
our $VERSION = '0.09';
# modules that we need
use MIME::QuotedPrint (); # no need to pollute this namespace
# satisfy -require-
1;
#-------------------------------------------------------------------------------
#
# Standard Perl features
#
#-------------------------------------------------------------------------------
# IN: 1 class to bless with
# 2 mode string (ignored)
# 3 file handle of PerlIO layer below (ignored)
# OUT: 1 blessed object
sub PUSHED { bless \*PUSHED,$_[0] } #PUSHED
#-------------------------------------------------------------------------------
# IN: 1 instantiated object (ignored)
# 2 handle to read from
# OUT: 1 decoded string
sub FILL {
# decode and return
my $line= readline( $_[1] );
return ( defined $line )
? MIME::QuotedPrint::decode_qp($line)
: undef;
} #FILL
#-------------------------------------------------------------------------------
# IN: 1 instantiated object (ignored)
# 2 buffer to be written
# 3 handle to write to
# OUT: 1 number of bytes written
sub WRITE {
# encode and write to handle: indicate result
return ( print { $_[2] } MIME::QuotedPrint::encode_qp( $_[1] ) )
? length( $_[1] )
: -1;
} #WRITE
#-------------------------------------------------------------------------------
__END__
=head1 NAME
PerlIO::via::QuotedPrint - PerlIO layer for quoted-printable strings
=head1 SYNOPSIS
use PerlIO::via::QuotedPrint;
open(my $in, '<:via(QuotedPrint)', 'file.qp') or
die "Can't open file.qp for reading: $!\n";
open(my $out, '>:via(QuotedPrint)', 'file.qp') or
die "Can't open file.qp for writing: $!\n";
=head1 DESCRIPTION
This module implements a PerlIO layer that works on files encoded in the
quoted-printable format. It will decode from quoted-printable while reading
from a handle, and it will encode as quoted-printable while writing to a handle.
=head1 EXPORTS
I<None>.
=head1 KNOWN BUGS
I<None>.
=head1 FEEDBACK
Patches, bug reports, suggestions or any other feedback is welcome.
Patches can be sent as GitHub pull requests at
L<https://github.com/steve-m-hay/PerlIO-via-QuotedPrint/pulls>.
Bug reports and suggestions can be made on the CPAN Request Tracker at
L<https://rt.cpan.org/Public/Bug/Report.html?Queue=PerlIO-via-QuotedPrint>.
Currently active requests on the CPAN Request Tracker can be viewed at
L<https://rt.cpan.org/Public/Dist/Display.html?Status=Active;Queue=PerlIO-via-QuotedPrint>.
Please test this distribution. See CPAN Testers Reports at
L<https://www.cpantesters.org/> for details of how to get involved.
Previous test results on CPAN Testers Reports can be viewed at
L<https://www.cpantesters.org/distro/P/PerlIO-via-QuotedPrint.html>.
Please rate this distribution on CPAN Ratings at
L<https://cpanratings.perl.org/rate/?distribution=PerlIO-via-QuotedPrint>.
=head1 SEE ALSO
L<PerlIO::via>,
L<MIME::QuotedPrint>.
=head1 ACKNOWLEDGEMENTS
Based on an example in the standard library module MIME::QuotedPrint in Perl
(version 5.8.0).
=head1 AVAILABILITY
The latest version of this module is available from CPAN (see
L<perlmodlib/"CPAN"> for details) at
L<https://metacpan.org/release/PerlIO-via-QuotedPrint> or
L<https://www.cpan.org/authors/id/S/SH/SHAY/> or
L<https://www.cpan.org/modules/by-module/PerlIO/>.
The latest source code is available from GitHub at
L<https://github.com/steve-m-hay/PerlIO-via-QuotedPrint>.
=head1 INSTALLATION
See the F<INSTALL> file.
=head1 AUTHOR
Elizabeth Mattijsen E<lt>L<liz@dijkmat.nl|mailto:liz@dijkmat.nl>E<gt>.
Steve Hay E<lt>L<shay@cpan.org|mailto:shay@cpan.org>E<gt> is now maintaining
PerlIO::via::QuotedPrint as of version 0.08.
=head1 COPYRIGHT
Copyright (C) 2002-2004, 2012 Elizabeth Mattijsen. All rights reserved.
Copyright (C) 2015, 2020 Steve Hay. All rights reserved.
=head1 LICENCE
This module is free software; you can redistribute it and/or modify it under
the same terms as Perl itself, i.e. under the terms of either the GNU General
Public License or the Artistic License, as specified in the F<LICENCE> file.
=head1 VERSION
Version 0.09
=head1 DATE
08 Dec 2020
=head1 HISTORY
See the F<Changes> file.
=cut
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