Bug 19873: (QA follow-up) Prevent warnings
[koha.git] / C4 / Output / JSONStream.pm
blob816ede803108ba760dd5792ae34a81b28915736a
1 package C4::Output::JSONStream;
3 # Copyright 2008 LibLime
5 # This file is part of Koha.
7 # Koha is free software; you can redistribute it and/or modify it
8 # under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 3 of the License, or
10 # (at your option) any later version.
12 # Koha is distributed in the hope that it will be useful, but
13 # WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with Koha; if not, see <http://www.gnu.org/licenses>.
20 =head1 NAME
22 C4::Output::JSONStream - progressively build JSON data
24 =head1 SYNOPSIS
26 my $json = new C4::Output::JSONStream;
28 $json->param( issues => [ 'yes!', 'please', 'no', { emphasis = 'NO' } ] );
29 $json->param( stuff => 'realia' );
31 print $json->output;
33 =head1 DESCRIPTION
35 This module allows you to build JSON incrementally.
37 =cut
39 use strict;
40 use warnings;
42 use JSON;
44 sub new {
45 my $class = shift;
46 my $self = {
47 data => {},
48 options => {}
51 bless $self, $class;
53 return $self;
56 sub param {
57 my $self = shift;
59 if ( @_ % 2 != 0 ) {
60 die 'param() received odd number of arguments (should be called with param => "value" pairs)';
63 for ( my $i = 0; $i < $#_; $i += 2 ) {
64 $self->{data}->{$_[$i]} = $_[$i + 1];
68 sub output {
69 my $self = shift;
71 return to_json( $self->{data} );