use Data::Dump 'pp';
use JSON;
+use File::stat;
+use Time::Piece;
-if (@ARGV) {
- require Time::Piece;
- require LWP::UserAgent;
- require File::stat;
-
- my $target = 'browser-support.inc.pl';
- my $source = 'http://caniuse.com/data.json';
-
- my $ua = LWP::UserAgent->new;
- $ua->agent('sheet.shiar.nl/browser');
- $ua->default_header('If-Modified-Since' => scalar gmtime $_->mtime)
- for File::stat::stat($target);
-
- my $res = $ua->get($source) or die "No data from $source\n";
- !$res->is_error or die $res->status_line;
- say $res->status_line;
-
- exit 0 if $res->code == 304; # unmodified
-
- my $data = decode_json($res->decoded_content) or die "Parse error: $!";
- my $updated = eval {
- s/ GMT$//,
- return Time::Piece->strptime($_) for $res->header('Last-Modified')
- };
- $data->{-date} = $_->datetime for $updated || ();
-
- my $suffix = $updated && $updated->ymd || time;
- open my $save, '>', (my $download = "browser-support-$suffix.inc.pl");
- print {$save} pp($data);
- close $save;
-
- symlink $download, "$target.new" and rename "$target.new", $target
- or die "New data at $download not linked: $!";
- exit 0;
-}
+our $VERSION = '1.01';
local $/; # slurp
my $source = readline;
-for ($source) { # cleanup
- s/\A\(// and s/\);?\s*\Z//; # empty callback
- next if /^\{/; # valid json
+$JSON::PP::false = 0;
+$JSON::PP::true = 1;
- # convert seperate variables to hash keys
- s/\A/{\n/;
- s/^caniuse\.(\w+) *= */"$1":/gm;
- s/;$/,/gm;
- s/,\s*\Z/\n}/;
- # fractions not supported by barekey
- s/(?<=[,{\n]) (\d*\.\d) (?=:['"])/"$1"/gx;
- # escapes not supported in singlequote
- s{: *\K'((?:[^\\']+|\\.)*)'}{
- my $_ = $1;
- s/"/\\"/g;
- s/\\'/'/g;
- qq("$_");
- }ge;
-}
+my $data = from_json($source);
+my $update = eval { stat(${^LAST_FH} // $ARGV)->mtime }
+ or warn "Could not determine input time\n";
+$data->{-date} = Time::Piece->new($update)->datetime;
-my $data = from_json($source, {
- allow_singlequote => 1,
- allow_barekey => 1,
-});
-
-print pp($data);
+say "# automatically generated by $0";
+print '+', pp($data);
__END__
=head1 SYNOPSIS
- curl http://caniuse.com/data.json |
- tools/mkcaniuse.pl > browser-support.inc.pl
-
- tools/mkcaniuse.pl auto
+ tools/mkcaniuse data.json >browser-support.inc.pl