1 | package JSON::PP5005;
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2 |
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3 | use 5.005;
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4 | use strict;
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5 |
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6 | my @properties;
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7 |
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8 | $JSON::PP5005::VERSION = '1.10';
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9 |
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10 | BEGIN {
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11 |
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12 | sub utf8::is_utf8 {
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13 | 0; # It is considered that UTF8 flag off for Perl 5.005.
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14 | }
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15 |
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16 | sub utf8::upgrade {
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17 | }
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18 |
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19 | sub utf8::downgrade {
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20 | 1; # must always return true.
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21 | }
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22 |
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23 | sub utf8::encode {
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24 | }
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25 |
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26 | sub utf8::decode {
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27 | }
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28 |
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29 | *JSON::PP::JSON_PP_encode_ascii = \&_encode_ascii;
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30 | *JSON::PP::JSON_PP_encode_latin1 = \&_encode_latin1;
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31 | *JSON::PP::JSON_PP_decode_surrogates = \&_decode_surrogates;
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32 | *JSON::PP::JSON_PP_decode_unicode = \&_decode_unicode;
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33 |
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34 | # missing in B module.
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35 | sub B::SVp_IOK () { 0x01000000; }
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36 | sub B::SVp_NOK () { 0x02000000; }
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37 | sub B::SVp_POK () { 0x04000000; }
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38 |
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39 | $INC{'bytes.pm'} = 1; # dummy
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40 | }
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41 |
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42 |
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43 |
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44 | sub _encode_ascii {
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45 | join('', map { $_ <= 127 ? chr($_) : sprintf('\u%04x', $_) } unpack('C*', $_[0]) );
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46 | }
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47 |
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48 |
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49 | sub _encode_latin1 {
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50 | join('', map { chr($_) } unpack('C*', $_[0]) );
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51 | }
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52 |
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53 |
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54 | sub _decode_surrogates { # from http://homepage1.nifty.com/nomenclator/unicode/ucs_utf.htm
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55 | my $uni = 0x10000 + (hex($_[0]) - 0xD800) * 0x400 + (hex($_[1]) - 0xDC00); # from perlunicode
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56 | my $bit = unpack('B32', pack('N', $uni));
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57 |
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58 | if ( $bit =~ /^00000000000(...)(......)(......)(......)$/ ) {
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59 | my ($w, $x, $y, $z) = ($1, $2, $3, $4);
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60 | return pack('B*', sprintf('11110%s10%s10%s10%s', $w, $x, $y, $z));
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61 | }
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62 | else {
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63 | Carp::croak("Invalid surrogate pair");
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64 | }
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65 | }
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66 |
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67 |
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68 | sub _decode_unicode {
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69 | my ($u) = @_;
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70 | my ($utf8bit);
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71 |
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72 | if ( $u =~ /^00([89a-f][0-9a-f])$/i ) { # 0x80-0xff
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73 | return pack( 'H2', $1 );
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74 | }
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75 |
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76 | my $bit = unpack("B*", pack("H*", $u));
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77 |
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78 | if ( $bit =~ /^00000(.....)(......)$/ ) {
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79 | $utf8bit = sprintf('110%s10%s', $1, $2);
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80 | }
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81 | elsif ( $bit =~ /^(....)(......)(......)$/ ) {
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82 | $utf8bit = sprintf('1110%s10%s10%s', $1, $2, $3);
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83 | }
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84 | else {
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85 | Carp::croak("Invalid escaped unicode");
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86 | }
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87 |
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88 | return pack('B*', $utf8bit);
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89 | }
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90 |
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91 |
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92 | sub JSON::PP::incr_parse {
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93 | local $Carp::CarpLevel = 1;
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94 | ( $_[0]->{_incr_parser} ||= JSON::PP::IncrParser->new )->incr_parse( @_ );
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95 | }
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96 |
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97 |
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98 | sub JSON::PP::incr_text {
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99 | $_[0]->{_incr_parser} ||= JSON::PP::IncrParser->new;
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100 |
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101 | if ( $_[0]->{_incr_parser}->{incr_parsing} ) {
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102 | Carp::croak("incr_text can not be called when the incremental parser already started parsing");
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103 | }
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104 |
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105 | $_[0]->{_incr_parser}->{incr_text} = $_[1] if ( @_ > 1 );
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106 | $_[0]->{_incr_parser}->{incr_text};
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107 | }
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108 |
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109 |
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110 | sub JSON::PP::incr_skip {
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111 | ( $_[0]->{_incr_parser} ||= JSON::PP::IncrParser->new )->incr_skip;
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112 | }
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113 |
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114 |
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115 | sub JSON::PP::incr_reset {
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116 | ( $_[0]->{_incr_parser} ||= JSON::PP::IncrParser->new )->incr_reset;
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117 | }
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118 |
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119 |
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120 | 1;
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121 | __END__
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122 |
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123 | =pod
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124 |
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125 | =head1 NAME
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126 |
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127 | JSON::PP5005 - Helper module in using JSON::PP in Perl 5.005
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128 |
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129 | =head1 DESCRIPTION
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130 |
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131 | JSON::PP calls internally.
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132 |
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133 | =head1 AUTHOR
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134 |
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135 | Makamaka Hannyaharamitu, E<lt>makamaka[at]cpan.orgE<gt>
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136 |
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137 |
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138 | =head1 COPYRIGHT AND LICENSE
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139 |
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140 | Copyright 2007-2010 by Makamaka Hannyaharamitu
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141 |
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142 | This library is free software; you can redistribute it and/or modify
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143 | it under the same terms as Perl itself.
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144 |
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145 | =cut
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146 |
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