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| 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/u
cs_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 alr
eady 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 2007-2012 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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Chromium Code Reviews
Issue 16539003:
Revert 205057 "Add JSON.pm to third_party" (Closed)
Base URL: svn://svn.chromium.org/chrome/