use JSON::PP;
use File::stat;
use Time::Piece;
+use List::Util 'uniq';
-our $VERSION = '1.02';
+our $VERSION = '1.04';
+
+my %BROWSERJOIN = (
+ edge => 'ie',
+ and_chr => 'android',
+);
local $/; # slurp
my $source = readline;
$JSON::PP::true = 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($update)->datetime;
+$data->{-date} = Time::Piece->new($_)->datetime
+ for delete $data->{updated} || ();
+
+delete $data->{eras};
+for (values %{ $data->{data} }) {
+ delete @{$_}{qw[ usage_perc_a usage_perc_y ]};
+}
+while (my ($browser, $alias) = each %BROWSERJOIN) {
+ my $agent = $data->{agents}->{$browser} or next;
+ my $amend = delete $data->{agents}->{$alias} or next;
+ unless ($agent->{prefix} eq $amend->{prefix}) {
+ $_->{prefix} ||= $amend->{prefix} for @{ $amend->{version_list} };
+ }
+ unshift @{ $agent->{version_list} }, @{ $amend->{version_list} };
+ $agent->{browser} = sprintf '%s (former %s)',
+ $agent->{browser}, $amend->{browser};
+
+ # prefer deprecated name if newer is convoluted (Chr/And.)
+ $agent->{abbr} = $amend->{abbr} if $agent->{abbr} =~ m{/};
+
+ for (values %{ $data->{data} }) {
+ my $stats = delete $_->{stats}->{$alias} or next;
+ $_ = { %{$_}, %{$stats} } for $_->{stats}->{$browser};
+ }
+}
+
+for my $feature (values %{ $data->{data} }) {
+ while (my ($attr, $row) = each %{$feature}) {
+ delete $feature->{$attr} if ref $row eq '' and $row eq '';
+ }
+}
+
+while (my ($agent, $row) = each %{ $data->{agents} }) {
+ delete $row->{usage_global};
+ delete $row->{prefix_exceptions}; # duplicate of version_list->prefix
+ $row->{versions} = [ uniq map { $_->{version} } @{ $row->{version_list} } ];
+
+ # convert metadata list into (cleaned) lookup table
+ my %version_lookup;
+ for (@{ $row->{version_list} }) {
+ delete $_->{era};
+ delete $_->{prefix} unless $_->{prefix};
+ $version_lookup{ delete $_->{version} } = $_;
+ }
+ $row->{version_list} = \%version_lookup;
+
+ # omit identical values from subsequent versions
+ for my $feature (values %{ $data->{data} }) {
+ my $cmp; # same value to be omitted
+ my $verstats = $feature->{stats}->{$agent};
+ for my $version (@{ $row->{versions} }) {
+ defined $verstats->{$version}
+ or warn "missing feature $feature->{title} for $agent $version";
+ if (defined $cmp and $verstats->{$version} eq $cmp) {
+ delete $verstats->{$version};
+ }
+ else {
+ $cmp = $verstats->{$version};
+ }
+ }
+ }
+}
say "# automatically generated by $0";
print '+', pp($data);