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package # This is JSON::backportPP
JSON::backportPP5005;
use 5.005;
use strict;
my @properties;
$JSON::PP5005::VERSION = '1.10';
BEGIN {
sub utf8::is_utf8 {
0; # It is considered that UTF8 flag off for Perl 5.005.
}
sub utf8::upgrade {
}
sub utf8::downgrade {
1; # must always return true.
}
sub utf8::encode {
}
sub utf8::decode {
}
*JSON::PP::JSON_PP_encode_ascii = \&_encode_ascii;
*JSON::PP::JSON_PP_encode_latin1 = \&_encode_latin1;
*JSON::PP::JSON_PP_decode_surrogates = \&_decode_surrogates;
*JSON::PP::JSON_PP_decode_unicode = \&_decode_unicode;
# missing in B module.
sub B::SVp_IOK () { 0x01000000; }
sub B::SVp_NOK () { 0x02000000; }
sub B::SVp_POK () { 0x04000000; }
$INC{'bytes.pm'} = 1; # dummy
}
sub _encode_ascii {
join('', map { $_ <= 127 ? chr($_) : sprintf('\u%04x', $_) } unpack('C*', $_[0]) );
}
sub _encode_latin1 {
join('', map { chr($_) } unpack('C*', $_[0]) );
}
sub _decode_surrogates { # from http://homepage1.nifty.com/nomenclator/unicode/ucs_utf.htm
my $uni = 0x10000 + (hex($_[0]) - 0xD800) * 0x400 + (hex($_[1]) - 0xDC00); # from perlunicode
my $bit = unpack('B32', pack('N', $uni));
if ( $bit =~ /^00000000000(...)(......)(......)(......)$/ ) {
my ($w, $x, $y, $z) = ($1, $2, $3, $4);
return pack('B*', sprintf('11110%s10%s10%s10%s', $w, $x, $y, $z));
}
else {
Carp::croak("Invalid surrogate pair");
}
}
sub _decode_unicode {
my ($u) = @_;
my ($utf8bit);
if ( $u =~ /^00([89a-f][0-9a-f])$/i ) { # 0x80-0xff
return pack( 'H2', $1 );
}
my $bit = unpack("B*", pack("H*", $u));
if ( $bit =~ /^00000(.....)(......)$/ ) {
$utf8bit = sprintf('110%s10%s', $1, $2);
}
elsif ( $bit =~ /^(....)(......)(......)$/ ) {
$utf8bit = sprintf('1110%s10%s10%s', $1, $2, $3);
}
else {
Carp::croak("Invalid escaped unicode");
}
return pack('B*', $utf8bit);
}
sub JSON::PP::incr_text {
$_[0]->{_incr_parser} ||= JSON::PP::IncrParser->new;
if ( $_[0]->{_incr_parser}->{incr_parsing} ) {
Carp::croak("incr_text can not be called when the incremental parser already started parsing");
}
$_[0]->{_incr_parser}->{incr_text} = $_[1] if ( @_ > 1 );
$_[0]->{_incr_parser}->{incr_text};
}
1;
__END__
=pod
=head1 NAME
JSON::PP5005 - Helper module in using JSON::PP in Perl 5.005
=head1 DESCRIPTION
JSON::PP calls internally.
=head1 AUTHOR
Makamaka Hannyaharamitu, E<lt>makamaka[at]cpan.orgE<gt>
=head1 COPYRIGHT AND LICENSE
Copyright 2007-2012 by Makamaka Hannyaharamitu
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=cut
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