1 package # This is JSON::backportPP 2 JSON::backportPP5005; 3 4 use 5.005; 5 use strict; 6 7 my @properties; 8 9 $JSON::PP5005::VERSION = '1.10'; 10 11 BEGIN { 12 13 sub utf8::is_utf8 { 14 0; # It is considered that UTF8 flag off for Perl 5.005. 15 } 16 17 sub utf8::upgrade { 18 } 19 20 sub utf8::downgrade { 21 1; # must always return true. 22 } 23 24 sub utf8::encode { 25 } 26 27 sub utf8::decode { 28 } 29 30 *JSON::PP::JSON_PP_encode_ascii = \&_encode_ascii; 31 *JSON::PP::JSON_PP_encode_latin1 = \&_encode_latin1; 32 *JSON::PP::JSON_PP_decode_surrogates = \&_decode_surrogates; 33 *JSON::PP::JSON_PP_decode_unicode = \&_decode_unicode; 34 35 # missing in B module. 36 sub B::SVp_IOK () { 0x01000000; } 37 sub B::SVp_NOK () { 0x02000000; } 38 sub B::SVp_POK () { 0x04000000; } 39 40 $INC{'bytes.pm'} = 1; # dummy 41 } 42 43 44 45 sub _encode_ascii { 46 join('', map { $_ <= 127 ? chr($_) : sprintf('\u%04x', $_) } unpack('C*', $_[0]) ); 47 } 48 49 50 sub _encode_latin1 { 51 join('', map { chr($_) } unpack('C*', $_[0]) ); 52 } 53 54 55 sub _decode_surrogates { # from http://homepage1.nifty.com/nomenclator/unicode/ucs_utf.htm 56 my $uni = 0x10000 + (hex($_[0]) - 0xD800) * 0x400 + (hex($_[1]) - 0xDC00); # from perlunicode 57 my $bit = unpack('B32', pack('N', $uni)); 58 59 if ( $bit =~ /^00000000000(...)(......)(......)(......)$/ ) { 60 my ($w, $x, $y, $z) = ($1, $2, $3, $4); 61 return pack('B*', sprintf('11110%s10%s10%s10%s', $w, $x, $y, $z)); 62 } 63 else { 64 Carp::croak("Invalid surrogate pair"); 65 } 66 } 67 68 69 sub _decode_unicode { 70 my ($u) = @_; 71 my ($utf8bit); 72 73 if ( $u =~ /^00([89a-f][0-9a-f])$/i ) { # 0x80-0xff 74 return pack( 'H2', $1 ); 75 } 76 77 my $bit = unpack("B*", pack("H*", $u)); 78 79 if ( $bit =~ /^00000(.....)(......)$/ ) { 80 $utf8bit = sprintf('110%s10%s', $1, $2); 81 } 82 elsif ( $bit =~ /^(....)(......)(......)$/ ) { 83 $utf8bit = sprintf('1110%s10%s10%s', $1, $2, $3); 84 } 85 else { 86 Carp::croak("Invalid escaped unicode"); 87 } 88 89 return pack('B*', $utf8bit); 90 } 91 92 93 sub JSON::PP::incr_text { 94 $_[0]->{_incr_parser} ||= JSON::PP::IncrParser->new; 95 96 if ( $_[0]->{_incr_parser}->{incr_parsing} ) { 97 Carp::croak("incr_text can not be called when the incremental parser already started parsing"); 98 } 99 100 $_[0]->{_incr_parser}->{incr_text} = $_[1] if ( @_ > 1 ); 101 $_[0]->{_incr_parser}->{incr_text}; 102 } 103 104 105 1; 106 __END__ 107 108 =pod 109 110 =head1 NAME 111 112 JSON::PP5005 - Helper module in using JSON::PP in Perl 5.005 113 114 =head1 DESCRIPTION 115 116 JSON::PP calls internally. 117 118 =head1 AUTHOR 119 120 Makamaka Hannyaharamitu, E<lt>makamaka[at]cpan.orgE<gt> 121 122 123 =head1 COPYRIGHT AND LICENSE 124 125 Copyright 2007-2010 by Makamaka Hannyaharamitu 126 127 This library is free software; you can redistribute it and/or modify 128 it under the same terms as Perl itself. 129 130 =cut 131
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