From a0ba9298856b2426c5c66b6d2f2b284d98cee594 Mon Sep 17 00:00:00 2001
From: Mischa POSLAWSKY <perl@shiar.org>
Date: Sun, 19 Apr 2009 14:31:06 +0000
Subject: [PATCH] charset: utf-8 byte function table

---
 charset.plp | 74 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)

diff --git a/charset.plp b/charset.plp
index c83508b..c9ef2b6 100644
--- a/charset.plp
+++ b/charset.plp
@@ -91,6 +91,80 @@ for my $tablenum (0 .. $#tables) {
 	print "</table>\n";
 }
 
+{
+	print '<li><table class="glyphs"><caption>UTF-8</caption><col>';
+	for my $section (qw{thead}) {
+		print "<$section><tr><th>↱";
+		print '<th>', $_ for @nibble;
+		print "\n";
+	}
+	print '<tbody>';
+	print '<tr rowspan="8">';
+	for my $msb (0 .. $#nibble) {
+		print '<tr><th>', $nibble[$msb];
+		for my $lsb (0 .. $#nibble) {
+			my $value = ($msb<<4) + $lsb;
+			if ($value <= 0x7F) {
+				print '<td rowspan="8" colspan="16" class="X di-a"',
+				      ' title="U+0000 – U+007F">Single byte ASCII'
+					if $value == 0;
+			}
+			elsif ($value <= 0xBF) {
+				print '<td rowspan="4" colspan="16" class="X di-d"',
+				      '>Multi-byte continuation'
+					if $value == 0x80;
+			}
+			elsif ($value <= 0xC1) {
+				print '<td colspan="2" class="X di-b" style="border-right:none; border-bottom:none"',
+				      ' title="U+0000 – U+007F">(Overl.)'
+					if $value == 0xC0;
+			}
+			elsif ($value <= 0xDF) {
+				print '<td rowspan="2" colspan="14" class="X di-prop" style="border-left:none"',
+				      ' title="U+0080 – U+03FF">2-byte sequence start'
+					if $value == 0xC2;
+				print '<td rowspan="1" colspan="16" class="X di-prop" style="border-top:none"',
+				      ' title="U+0400 – U+07FF">'
+					if $value == 0xD0;
+			}
+			elsif ($value <= 0xEF) {
+				print '<td colspan="16" class="X di-prop"',
+				      ' title="U+0800 – U+FFFF">3-byte sequence start'
+					if $value == 0xE0;
+			}
+			elsif ($value <= 0xF4) {
+				print '<td colspan="5" class="X di-prop" style="border-right:none"',
+				      ' title="U+1·0000 – U+10·FFFF">4-byte sequence'
+					if $value == 0xF0;
+			}
+			elsif ($value <= 0xF7) {
+				print '<td colspan="3" class="X di-b" style="border-left:none"',
+				      ' title="U+11·0000 – U+1FF·FFFF">(Overflow)'
+					if $value == 0xF5;
+			}
+			elsif ($value <= 0xFB) {
+				print '<td colspan="4" class="X di-b"',
+				      ' title="U+200·0000 – U+3FFF·FFFF">5-byte'
+					if $value == 0xF8;
+			}
+			elsif ($value <= 0xFD) {
+				print '<td colspan="2" class="X di-b"',
+				      ' title="U+4000·0000 – 7FFFF·FFFF">6-byte'
+					if $value == 0xFC;
+			}
+			elsif ($value <= 0xFF) {
+				print '<td colspan="2" class="di-invalid">Invalid'
+					if $value == 0xFE;
+			}
+			else {
+				print "\n".'<td class="X">?';
+			}
+		}
+		print "\n";
+	}
+	print "</table>\n";
+}
+
 print "</ul>\n";
 
 :>
-- 
2.30.0