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package Catmandu::Exporter::JSON;
use Catmandu::Sane;
our $VERSION = '1.2024';
use Cpanel::JSON::XS ();
use Moo;
use namespace::clean;
with 'Catmandu::Exporter';
has line_delimited => (is => 'ro', default => sub {0});
has array => (is => 'ro', default => sub {1});
has pretty => (is => 'ro', default => sub {0});
has indent => (is => 'ro', default => sub {0});
has space_before => (is => 'ro', default => sub {0});
has space_after => (is => 'ro', default => sub {0});
has canonical => (is => 'ro', default => sub {0});
has json => (is => 'lazy');
sub _build_json {
my ($self) = @_;
Cpanel::JSON::XS->new->utf8(0)
->allow_nonref->pretty($self->line_delimited ? 0 : $self->pretty)
->indent($self->line_delimited ? 0 : $self->pretty || $self->indent)
->space_before($self->line_delimited ? 0 : $self->pretty
|| $self->space_before)
->space_after($self->line_delimited ? 0 : $self->pretty
|| $self->space_after)->canonical($self->canonical);
}
sub add {
my ($self, $data) = @_;
my $fh = $self->fh;
my $json = $self->json->encode($data);
if ($self->line_delimited) {
print $fh $json;
print $fh "\n";
return;
}
if ($self->pretty) {
chomp $json;
}
if ($self->array) {
if ($self->count) {
print $fh ",";
print $fh "\n" if $self->pretty;
}
else {
print $fh "[";
}
}
print $fh $json;
}
sub commit {
my ($self, $data) = @_;
if (!$self->line_delimited && $self->array) {
my $fh = $self->fh;
unless ($self->count) {
print $fh "[";
}
print $fh "]\n";
}
}
1;
__END__
=pod
=head1 NAME
Catmandu::Exporter::JSON - a JSON exporter
=head1 SYNOPSIS
# From the command line
catmandu convert YAML to JSON --pretty 1 < input.yml
# Export in the line-delimited format
catmandu convert YAML to JSON --line_delimited 1 < input.yml
# In a Perl script
use Catmandu;
my $exporter = Catmandu->exporter('JSON', fix => 'myfix.txt');
$exporter->add_many($arrayref);
$exporter->add_many($iterator);
$exporter->add_many(sub { });
$exporter->add($hashref);
printf "exported %d items\n" , $exporter->count;
=head1 DESCRIPTION
This L<Catmandu::Exporter> exports items serialized in JSON format. By default
each item is printed condensed on one line.
=head1 CONFIGURATION
=over
=item file
Write output to a local file given by its path or file handle. Alternatively a
scalar reference can be passed to write to a string and a code reference can be
used to write to a callback function.
=item fh
Write the output to an L<IO::Handle>. If not specified,
L<Catmandu::Util::io|Catmandu::Util/IO-functions> is used to create the output
handle from the C<file> argument or by using STDOUT.
=item fix
An ARRAY of one or more fixes or file scripts to be applied to exported items.
=item encoding
Binmode of the output stream C<fh>. Set to "C<:utf8>" by default.
=item pretty
Pretty-print JSON
=item indent
=item space_before
=item space_after
=item canonical
L<JSON> serialization options
=item array
Structure the data as a JSON array. Default is C<1>.
=item line_delimited
Export items as newline delimited JSON. Default is C<0>. The C<array>, C<pretty>, C<indent>, C<space_before> and C<space_after> options will be ignored if C<line_delimited> is C<1>.
=back
=head1 SEE ALSO
L<Catmandu::Exporter::YAML>
=cut
|
