package # This is JSON::backportPP JSON::backportPP56; use 5.006; use strict; my @properties; $JSON::PP56::VERSION = '1.08'; BEGIN { sub utf8::is_utf8 { my $len = length $_[0]; # char length { use bytes; # byte length; return $len != length $_[0]; # if !=, UTF8-flagged on. } } sub utf8::upgrade { ; # noop; } sub utf8::downgrade ($;$) { return 1 unless ( utf8::is_utf8( $_[0] ) ); if ( _is_valid_utf8( $_[0] ) ) { my $downgrade; for my $c ( unpack( "U*", $_[0] ) ) { if ( $c < 256 ) { $downgrade .= pack("C", $c); } else { $downgrade .= pack("U", $c); } } $_[0] = $downgrade; return 1; } else { Carp::croak("Wide character in subroutine entry") unless ( $_[1] ); 0; } } sub utf8::encode ($) { # UTF8 flag off if ( utf8::is_utf8( $_[0] ) ) { $_[0] = pack( "C*", unpack( "C*", $_[0] ) ); } else { $_[0] = pack( "U*", unpack( "C*", $_[0] ) ); $_[0] = pack( "C*", unpack( "C*", $_[0] ) ); } } sub utf8::decode ($) { # UTF8 flag on if ( _is_valid_utf8( $_[0] ) ) { utf8::downgrade( $_[0] ); $_[0] = pack( "U*", unpack( "U*", $_[0] ) ); } } *JSON::PP::JSON_PP_encode_ascii = \&_encode_ascii; *JSON::PP::JSON_PP_encode_latin1 = \&_encode_latin1; *JSON::PP::JSON_PP_decode_surrogates = \&JSON::PP::_decode_surrogates; *JSON::PP::JSON_PP_decode_unicode = \&JSON::PP::_decode_unicode; unless ( defined &B::SVp_NOK ) { # missing in B module. eval q{ sub B::SVp_NOK () { 0x02000000; } }; } } sub _encode_ascii { join('', map { $_ <= 127 ? chr($_) : $_ <= 65535 ? sprintf('\u%04x', $_) : sprintf('\u%x\u%x', JSON::PP::_encode_surrogates($_)); } _unpack_emu($_[0]) ); } sub _encode_latin1 { join('', map { $_ <= 255 ? chr($_) : $_ <= 65535 ? sprintf('\u%04x', $_) : sprintf('\u%x\u%x', JSON::PP::_encode_surrogates($_)); } _unpack_emu($_[0]) ); } sub _unpack_emu { # for Perl 5.6 unpack warnings return !utf8::is_utf8($_[0]) ? unpack('C*', $_[0]) : _is_valid_utf8($_[0]) ? unpack('U*', $_[0]) : unpack('C*', $_[0]); } sub _is_valid_utf8 { my $str = $_[0]; my $is_utf8; while ($str =~ /(?: ( [\x00-\x7F] |[\xC2-\xDF][\x80-\xBF] |[\xE0][\xA0-\xBF][\x80-\xBF] |[\xE1-\xEC][\x80-\xBF][\x80-\xBF] |[\xED][\x80-\x9F][\x80-\xBF] |[\xEE-\xEF][\x80-\xBF][\x80-\xBF] |[\xF0][\x90-\xBF][\x80-\xBF][\x80-\xBF] |[\xF1-\xF3][\x80-\xBF][\x80-\xBF][\x80-\xBF] |[\xF4][\x80-\x8F][\x80-\xBF][\x80-\xBF] ) | (.) )/xg) { if (defined $1) { $is_utf8 = 1 if (!defined $is_utf8); } else { $is_utf8 = 0 if (!defined $is_utf8); if ($is_utf8) { # eventually, not utf8 return; } } } return $is_utf8; } 1; __END__ =pod =head1 NAME JSON::PP56 - Helper module in using JSON::PP in Perl 5.6 =head1 DESCRIPTION JSON::PP calls internally. =head1 AUTHOR Makamaka Hannyaharamitu, Emakamaka[at]cpan.orgE =head1 COPYRIGHT AND LICENSE Copyright 2007-2009 by Makamaka Hannyaharamitu This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. =cut