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|
#!/usr/bin/env perl
use v5.14;
use autodie;
use strict;
use warnings;
use Getopt::Long;
use Scalar::Util qw(blessed);
use Time::HiRes qw(gettimeofday tv_interval);
use Attean;
use Try::Tiny;
use open ':std', ':encoding(utf8)';
unless (@ARGV) {
print <<"END";
Usage: $0 -list
$0 -i IN_FORMAT [-o OUT_FORMAT] FILENAME
END
exit;
}
my $verbose = 0;
my $pull = 0;
my $push = 0;
my $list = 0;
my $block_size = 25;
my $short = 0;
my %namespaces;
my $in_format = 'GUESS';
my $out_format = 'STRING';
my $result = GetOptions ("short" => \$short, "list" => \$list, "verbose" => \$verbose, "block=i" => \$block_size, "pull" => \$pull, "push" => \$push, "in=s" => \$in_format, "out=s" => \$out_format, "define=s" => \%namespaces, "D=s" => \%namespaces);
if ($list) {
say "Parsers:";
say sprintf("- %s", s/^.*://r) for (sort Attean->list_parsers);
say "\nSerializers:";
say sprintf("- %s", s/^.*://r) for (sort Attean->list_serializers);
say '';
exit;
}
my $mapper = $short ? Attean::TermMap->short_blank_map : undef;
my $bmapper = $short ? $mapper->binding_mapper : undef;
unless (@ARGV) { push(@ARGV, '-') }
while (defined(my $file = shift)) {
my $in = $in_format;
my $out = $out_format;
my $fh;
my $base;
if ($file eq '-') {
$fh = \*STDIN;
$base = Attean::IRI->new('file:///dev/stdin');
} else {
open( $fh, '<:encoding(UTF-8)', $file ) or die $!;
$base = Attean::IRI->new('file://' . File::Spec->rel2abs($file));
}
my $out_io = \*STDOUT;
$| = 1;
my $parser;
my $map = URI::NamespaceMap->new( \%namespaces );
if ($in eq 'GUESS') {
my $class = Attean->get_parser( filename => $file ) // 'AtteanX::Parser::NTriples';
$parser = $class->new( base => $base, namespaces => $map );
} else {
$parser = Attean->get_parser($in)->new(namespaces => $map);
}
if ($out eq 'STRING') {
parse_to_string($parser, $fh);
} else {
my $sclass = Attean->get_serializer($out) || die "*** No serializer found for format $out\n";
my $serializer = $sclass->new(namespaces => $map);
try {
if ($pull) {
warn "# Pull parsing\n" if ($verbose);
pull_transcode($parser, $serializer, $fh, $out_io);
} elsif ($push) {
warn "# Push parsing\n" if ($verbose);
push_transcode($parser, $serializer, $fh, $out_io);
} elsif ($parser->does('Attean::API::PullParser')) {
warn "# Pull parsing\n" if ($verbose);
pull_transcode($parser, $serializer, $fh, $out_io);
} elsif ($parser->does('Attean::API::PushParser')) {
warn "# Push parsing\n" if ($verbose);
push_transcode($parser, $serializer, $fh, $out_io);
}
} catch {
my $e = $_;
if (blessed($e) and $e->isa('Error::TypeTiny::Assertion')) {
my $type = $e->type;
my $value = $e->value;
my $class = ref($value);
$class =~ s/^.*:://;
if ($type->isa('Type::Tiny::Role')) {
my $role = ($type->role =~ s/^.*:://r);
die "*** Cannot serialize a $class as a $role\n";
}
die "*** Failed to serialize a $class with parser $sclass\n";
}
die "$e\n";
};
}
}
sub fix_iter {
my $iter = shift;
if ($bmapper) {
$iter = $iter->map($bmapper);
}
return $iter;
}
sub parse_to_string {
my $parser = shift;
my $fh = shift;
my $iter = fix_iter($parser->parse_iter_from_io($fh));
while (my $item = $iter->next) {
say $item->as_string;
}
}
sub pull_transcode {
my $parser = shift;
my $serializer = shift;
my $fh = shift;
my $out_io = shift;
warn "Pull parser\n" if ($verbose);
my $iter = fix_iter($parser->parse_iter_from_io($fh));
$serializer->serialize_iter_to_io($out_io, $iter);
}
sub push_transcode {
my $parser = shift;
my $serializer = shift;
my $fh = shift;
my $out_io = shift;
warn "Push parser\n" if ($verbose);
if ($serializer->does('Attean::API::AppendableSerializer')) {
my $count = 0;
my $start = [gettimeofday];
my @queue;
my $handler = sub {
my $triple = shift;
if ($mapper) {
$triple = $triple->apply_map($mapper);
}
$count++;
print STDERR "\r" if ($verbose);
push(@queue, $triple);
if (scalar(@queue) > 1000) {
$serializer->serialize_list_to_io($out_io, @queue);
@queue = ();
}
if ($verbose and $count % $block_size == 0) {
my $elapsed = tv_interval($start);
my $tps = $count / $elapsed;
print STDERR sprintf("%6d (%9.1f T/s)", $count, $tps);
}
};
$parser->handler($handler);
$parser->parse_cb_from_io($fh);
# finish
$serializer->serialize_list_to_io($out_io, @queue);
my $elapsed = tv_interval($start);
my $tps = $count / $elapsed;
if ($verbose) {
print STDERR sprintf("\r%6d (%9.1f T/s)\n", $count, $tps);
}
} else {
pull_transcode($parser, $serializer, $fh, $out_io);
}
}
|
