rewrite client demo by lua, remove old C version client demo

3rd/lua-cjson/tests/genutf8.pl

@@ -0,0 +1,23 @@
+#!/usr/bin/env perl
+
+# Create test comparison data using a different UTF-8 implementation.
+
+# The generated utf8.dat file must have the following MD5 sum:
+#       cff03b039d850f370a7362f3313e5268
+
+use strict;
+
+# 0xD800 - 0xDFFF are used to encode supplementary codepoints
+# 0x10000 - 0x10FFFF are supplementary codepoints
+my (@codepoints) = (0 .. 0xD7FF, 0xE000 .. 0x10FFFF);
+
+my $utf8 = pack("U*", @codepoints);
+defined($utf8) or die "Unable create UTF-8 string\n";
+
+open(FH, ">:utf8", "utf8.dat")
+    or die "Unable to open utf8.dat: $!\n";
+print FH $utf8
+    or die "Unable to write utf8.dat\n";
+close(FH);
+
+# vi:ai et sw=4 ts=4: