browser: delete unused data from caniuse include

[sheet.git] / tools / mkcaniuse

diff --git a/tools/mkcaniuse b/tools/mkcaniuse
index d0cb8278c0b7c6b251d720c425ebad626d8d0739..57b36fc3dd2876d65485fe17e386d8171afb4480 100755 (executable)
--- a/tools/mkcaniuse
+++ b/tools/mkcaniuse
@@ -1,47 +1,35 @@
 #!/usr/bin/env perl
-use 5.010;
-use strict;
+use 5.014;
 use warnings;
 
 use Data::Dump 'pp';
-use JSON;
+use JSON::PP;
 use File::stat;
 use Time::Piece;
 
-our $VERSION = '1.01';
+our $VERSION = '1.02';
 
 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/{\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;
-}
+$JSON::PP::false = 0;
+$JSON::PP::true  = 1;
 
-my $data = from_json($source, {
-       allow_singlequote => 1,
-       allow_barekey => 1,
-});
+my $data = decode_json($source);
 my $update = eval { stat(${^LAST_FH} // $ARGV)->mtime }
        or warn "Could not determine input time\n";
 $data->{-date} = Time::Piece->new($update)->datetime;
+delete $data->{eras};
+for (values %{ $data->{data} }) {
+       delete @{$_}{qw[ usage_perc_a usage_perc_y ]};
+}
+for (values %{ $data->{agents} }) {
+       delete $_->{usage_global};
+       shift @{ $_->{versions} } while !defined $_->{versions}->[0];
+}
 
-print pp($data);
+say "# automatically generated by $0";
+print '+', pp($data);
 
 __END__