browser: above-average (di-aa) class

[sheet.git] / browser.plp

diff --git a/browser.plp b/browser.plp
index a3068f5266077661b278b9098c429862804dccb7..a3a984da9f75564f25b58d4f5c528f3aa8e423c6 100644 (file)
--- a/browser.plp
+++ b/browser.plp
@@ -43,7 +43,7 @@ my $caniuse = from_json($source, {
 
 my %CSTATS = (
        n => 'di-b',
-       y => 'di-a',
+       y => 'di-aa',
        a => 'di-d',
        j => 'di-prop',
        p => 'di-prop',
@@ -55,44 +55,99 @@ my %CSTATUS = (
        pr    => 'di-prop', # proposed
        cr    => 'di-d', # candidate
        rec   => 'di-a', # recommendation
-       ietf  => 'di-a', # standard
+       ietf  => 'di-aa', # standard
 );
 my @browsers = qw(trident gecko webkit_saf presto);
-unshift @{ $caniuse->{agents}->{gecko}->{versions} }, 2;
+my %versions;
+if (my ($somerow) = values %{ $caniuse->{data} }) {
+       while (my ($browser, $row) = each %{ $somerow->{stats} }) {
+               $versions{$browser} = [ sort { paddedver($a) cmp paddedver($b) } keys %$row ];
+       }
+}
 
 print '<table class="glyphs dimap">';
 print '<col>' x 2;
-printf '<colgroup span="%d">', scalar @{ $caniuse->{agents}->{$_}->{versions} } for @browsers;
+printf '<colgroup span="%d">', scalar @{ $versions{$_} } for @browsers;
 print "\n";
 
 print '<thead><tr>';
 print "<th>$_" for qw(feature status);
-printf '<th colspan="%d">%s', scalar @{ $_->{versions} }, $_->{browser}
-       for map { $caniuse->{agents}->{$_} } @browsers;
+printf '<th colspan="%d">%s',
+       scalar @{ $versions{$_} }, $caniuse->{agents}->{$_}->{browser}
+               for @browsers;
+# preceding row without any colspan to work around gecko bug
+print '<tr>';
+print '<td>' x $_ for 2, map { scalar @{ $versions{$_} } } @browsers;
 print "</thead>\n";
 
-for my $id (keys %{ $caniuse->{data} }) {
+sub featurerank {
+       # relative amount of support for given feature
+       state $statspts = { y=>10, 'y x'=>9, a=>5, j=>2, p=>1 };
+       my ($id) = @_;
+       my $rank = 0;
+       if (my $row = $caniuse->{data}->{$id}->{stats}) {
+               while (my ($browser, $vercols) = each %versions) {
+                       my $div = 0;  # multiplier exponent (decreased to lower value)
+                       my @vers = map { $row->{$browser}->{$_} } @$vercols;
+                       if (my $current = $caniuse->{agents}->{$browser}->{versions}->[-3]) {
+                               my @future;  # find upcoming releases (after current)
+                               for (reverse @$vercols) {
+                                       last if $_ eq $current;
+                                       push @future, pop @vers;
+                                       $_ eq 'u' and $_ = $vers[-1] for $future[-1];  # inherit latest value if unknown
+                               }
+                               splice @vers, -1, 0, @future;  # move ahead to decrease precedence
+                       }
+                       $rank += $statspts->{$_} * 2**($div--) for reverse @vers;
+               }
+       }
+       return $rank;
+}
+
+for my $id (sort {
+       featurerank($b) <=> featurerank($a)
+} keys %{ $caniuse->{data} }) {
        my $row = $caniuse->{data}->{$id};
        my $data = $row->{stats} or next;  # skip metadata [summary]
        printf '<tr id="%s">', $id;
        printf '<th title="%s">%s', $row->{description}, $row->{title};
        printf '<td title="%s" class="%s">%s', $caniuse->{statuses}->{$_}, $CSTATUS{$_} // '', $_ for $row->{status};
        for my $browser (@browsers) {
-               printf '<td class="%s">%s', $CSTATS{ $data->{$browser}->{$_} }, $_
-                       for @{ $caniuse->{agents}->{$browser}->{versions} };
+               my ($prev, @span);
+               for my $ver (@{ $versions{$browser} }, undef) {
+                       unless (!defined $prev
+                       or $data->{$browser}->{$prev} ~~ $data->{$browser}->{$ver}) {
+                               printf '<td class="%s" colspan="%d">%s',
+                                       $CSTATS{ $data->{$browser}->{$prev} },
+                                       scalar @span,
+                                       join('‒', $span[0], @span > 1 ? $span[-1] : ());
+                               undef $prev;
+                               @span = ();
+                       }
+                       push @span, $ver;
+                       $prev = $ver;
+               }
        }
+       print '<td>', int featurerank($id);
 }
 print '</table>';
 
+sub paddedver {
+       # normalised version number comparable as string (cmp)
+       shift =~ /^(\d*)(.*)/;
+       return sprintf('%02d', $1) . $2;
+}
+
 :>
 <hr>
 
 <div class="legend">
        <table class="glyphs"><tr>
-       <td class="X di-a">yes
-       <td class="X di-d">almost
-       <td class="X di-prop">plugin or js
-       <td class="X di-b">no
+       <td class="X di-aa">supported
+       <td class="X di-a">prefixed
+       <td class="X di-d">partial
+       <td class="X di-prop">external (js/plugin)
+       <td class="X di-b">missing
        </table>
 
        <div class="right">