#!/usr/bin/env perl
-use 5.010;
-use strict;
+use 5.014;
use warnings;
use Data::Dump 'pp';
-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;
-}
+use JSON::PP;
+use File::stat;
+use Time::Piece;
+use List::Util 'uniq';
+
+our $VERSION = '1.04';
+
+my %BROWSERJOIN = (
+ edge => 'ie',
+ and_chr => 'android',
+);
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 $data = decode_json($source);
+$data->{-date} = Time::Piece->new($_)->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};
+ }
}
-my $data = from_json($source, {
- allow_singlequote => 1,
- allow_barekey => 1,
-});
+for my $feature (values %{ $data->{data} }) {
+ while (my ($attr, $row) = each %{$feature}) {
+ delete $feature->{$attr} if ref $row eq '' and $row eq '';
+ }
+}
-print pp($data);
+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);
__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