browser: renamed agent keys

[sheet.git] / tools / convert-caniuse.pl

diff --git a/tools/convert-caniuse.pl b/tools/convert-caniuse.pl
index 7006b18f99b371dbaef57005a524e6c6da214b11..b00a869b2a94094fa06138016b46f5b8c4fad819 100755 (executable)
--- a/tools/convert-caniuse.pl
+++ b/tools/convert-caniuse.pl
@@ -4,22 +4,60 @@ use strict;
 use warnings;
 
 use Data::Dump 'pp';
-use File::Slurp 'read_file';
 use JSON;
 
+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;
+}
+
 local $/;  # slurp
 my $source = readline;
 
 for ($source) { # cleanup
+       s/\A\(// and s/\);?\s*\Z//;  # empty callback
+       next if /^\{/;  # valid json
+
        # convert seperate variables to hash keys
-       s/\A/{/;
-       s/^caniuse\.(\w+) = /"$1":/gm;
+       s/\A/{\n/;
+       s/^caniuse\.(\w+) *= */"$1":/gm;
        s/;$/,/gm;
        s/,\s*\Z/\n}/;
        # fractions not supported by barekey
-       s/(?<=[,{]) (\d*\.\d) (?=:')/"$1"/gx;
+       s/(?<=[,{\n]) (\d*\.\d) (?=:['"])/"$1"/gx;
        # escapes not supported in singlequote
-       s{'((?:[^\\']+|\\.)*)'}{
+       s{: *\K'((?:[^\\']+|\\.)*)'}{
                my $_ = $1;
                s/"/\\"/g;
                s/\\'/'/g;
@@ -42,6 +80,8 @@ convert-caniuse - Turn Javascript data into an equivalent Perl structure
 
 =head1 SYNOPSIS
 
-       curl http://caniuse.com/js/data.js |
+       curl http://caniuse.com/data.json |
        tools/convert-caniuse.pl > browser-support.inc.pl
 
+       tools/convert-caniuse.pl auto
+