xref: /openbsd/gnu/usr.bin/perl/cpan/JSON-PP/bin/json_pp (revision 3cab2bb3) 
1#!/usr/bin/perl
2
3BEGIN { pop @INC if $INC[-1] eq '.' }
4use strict;
5use Getopt::Long;
6
7use JSON::PP ();
8
9# imported from JSON-XS/bin/json_xs
10
11my %allow_json_opt = map { $_ => 1 } qw(
12    ascii latin1 utf8 pretty indent space_before space_after relaxed canonical allow_nonref
13    allow_singlequote allow_barekey allow_bignum loose escape_slash indent_length
14);
15
16
17GetOptions(
18   'v'   => \( my $opt_verbose ),
19   'f=s' => \( my $opt_from = 'json' ),
20   't=s' => \( my $opt_to = 'json' ),
21   'json_opt=s' => \( my $json_opt = 'pretty' ),
22   'V'   => \( my $version ),
23) or die "Usage: $0 [-V] [-f from_format] [-t to_format] [-json_opt options_to_json1[,options_to_json2[,...]]]\n";
24
25
26if ( $version ) {
27    print "$JSON::PP::VERSION\n";
28    exit;
29}
30
31
32$json_opt = '' if $json_opt eq '-';
33
34my %json_opt;
35for my $opt (split /,/, $json_opt) {
36    my ($key, $value) = split /=/, $opt, 2;
37    $value = 1 unless defined $value;
38    die "'$_' is not a valid json option" unless $allow_json_opt{$key};
39    $json_opt{$key} = $value;
40}
41
42my %F = (
43   'json' => sub {
44      my $json = JSON::PP->new;
45      for my $key (keys %json_opt) {
46        $json->$key($json_opt{$key});
47      }
48      $json->decode( $_ );
49   },
50   'eval' => sub {
51        my $v = eval "no strict;\n#line 1 \"input\"\n$_";
52        die "$@" if $@;
53        return $v;
54    },
55);
56
57
58my %T = (
59   'null' => sub { "" },
60   'json' => sub {
61      my $json = JSON::PP->new->utf8;
62      for my $key (keys %json_opt) {
63        $json->$key($json_opt{$key});
64      }
65      $json->canonical if $json_opt{pretty};
66      $json->encode( $_ );
67   },
68   'dumper' => sub {
69      require Data::Dumper;
70      local $Data::Dumper::Terse     = 1;
71      local $Data::Dumper::Indent    = 1;
72      local $Data::Dumper::Useqq     = 1;
73      local $Data::Dumper::Quotekeys = 0;
74      local $Data::Dumper::Sortkeys  = 1;
75      Data::Dumper::Dumper($_)
76   },
77);
78
79
80
81$F{$opt_from}
82   or die "$opt_from: not a valid fromformat\n";
83
84$T{$opt_to}
85   or die "$opt_from: not a valid toformat\n";
86
87local $/;
88$_ = <STDIN>;
89
90$_ = $F{$opt_from}->();
91$_ = $T{$opt_to}->();
92
93print $_;
94
95
96__END__
97
98=pod
99
100=encoding utf8
101
102=head1 NAME
103
104json_pp - JSON::PP command utility
105
106=head1 SYNOPSIS
107
108    json_pp [-v] [-f from_format] [-t to_format] [-json_opt options_to_json1[,options_to_json2[,...]]]
109
110=head1 DESCRIPTION
111
112json_pp converts between some input and output formats (one of them is JSON).
113This program was copied from L<json_xs> and modified.
114
115The default input format is json and the default output format is json with pretty option.
116
117=head1 OPTIONS
118
119=head2 -f
120
121    -f from_format
122
123Reads a data in the given format from STDIN.
124
125Format types:
126
127=over
128
129=item json
130
131as JSON
132
133=item eval
134
135as Perl code
136
137=back
138
139=head2 -t
140
141Writes a data in the given format to STDOUT.
142
143=over
144
145=item null
146
147no action.
148
149=item json
150
151as JSON
152
153=item dumper
154
155as Data::Dumper
156
157=back
158
159=head2 -json_opt
160
161options to JSON::PP
162
163Acceptable options are:
164
165    ascii latin1 utf8 pretty indent space_before space_after relaxed canonical allow_nonref
166    allow_singlequote allow_barekey allow_bignum loose escape_slash
167
168Multiple options must be separated by commas:
169
170    Right: -json_opt pretty,canonical
171
172    Wrong: -json_opt pretty -json_opt canonical
173
174=head2 -v
175
176Verbose option, but currently no action in fact.
177
178=head2 -V
179
180Prints version and exits.
181
182
183=head1 EXAMPLES
184
185    $ perl -e'print q|{"foo":"あい","bar":1234567890000000000000000}|' |\
186       json_pp -f json -t dumper -json_opt pretty,utf8,allow_bignum
187
188    $VAR1 = {
189              'bar' => bless( {
190                                'value' => [
191                                             '0000000',
192                                             '0000000',
193                                             '5678900',
194                                             '1234'
195                                           ],
196                                'sign' => '+'
197                              }, 'Math::BigInt' ),
198              'foo' => "\x{3042}\x{3044}"
199            };
200
201    $ perl -e'print q|{"foo":"あい","bar":1234567890000000000000000}|' |\
202       json_pp -f json -t dumper -json_opt pretty
203
204    $VAR1 = {
205              'bar' => '1234567890000000000000000',
206              'foo' => "\x{e3}\x{81}\x{82}\x{e3}\x{81}\x{84}"
207            };
208
209=head1 SEE ALSO
210
211L<JSON::PP>, L<json_xs>
212
213=head1 AUTHOR
214
215Makamaka Hannyaharamitu, E<lt>makamaka[at]cpan.orgE<gt>
216
217
218=head1 COPYRIGHT AND LICENSE
219
220Copyright 2010 by Makamaka Hannyaharamitu
221
222This library is free software; you can redistribute it and/or modify
223it under the same terms as Perl itself.
224
225=cut
226
227