From 73df1a0e994f6d777591d7dae7c14f291c876fb2 Mon Sep 17 00:00:00 2001
From: Thomas Voss <mail@thomasvoss.com>
Date: Tue, 9 Apr 2024 19:01:28 +0200
Subject: Add uprop_get_nt()

---
 gen/prop/nt | 68 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100755 gen/prop/nt

(limited to 'gen/prop')

diff --git a/gen/prop/nt b/gen/prop/nt
new file mode 100755
index 0000000..569cc18
--- /dev/null
+++ b/gen/prop/nt
@@ -0,0 +1,68 @@
+#!/bin/sh
+
+set -e
+cd "${0%/*}/../.."
+exec >lib/unicode/prop/uprop_get_nt.c
+
+gawk '
+BEGIN {
+	FS = "( *#.*| +; +)"
+
+	map["Decimal"] = "DE"
+	map["Digit"]   = "DI"
+	map["Numeric"] = "NU"
+
+	print "/* This file is autogenerated by gen/prop/nt; DO NOT EDIT. */"
+	print ""
+	print "#include \"__bsearch.h\""
+	print "#include \"macros.h\""
+	print "#include \"rune.h\""
+	print "#include \"unicode/prop.h\""
+	print ""
+}
+
+/^[^#]/ {
+	n = split($1, a, /\.\./)
+	lo = strtonum("0X" a[1])
+	hi = strtonum("0X" a[n])
+
+	for (i = lo; i <= hi; i++) {
+		gsub(/^; /, "", $2)
+		props[i] = "NT_" map[$2]
+	}
+}
+
+END {
+	print "static constexpr enum uprop_nt lookup_lat1[] = {"
+	for (i = 0; i < 0x100; i++) {
+		if (i % 8 == 0)
+			printf "\t"
+		printf "%7s,%s", props[i] ? props[i] : "NT_NONE", i % 8 == 7 ? "\n" : " "
+	}
+	print "};"
+	print ""
+	print "static const struct {"
+	print "\trune lo, hi;"
+	print "\tenum uprop_nt val;"
+	print "} lookup[] = {"
+
+	for (i = 0x100; i <= 0x10FFFF; i++) {
+		if (!props[i])
+			continue
+		lo = i
+		while (props[lo] == props[i + 1])
+			i++
+		printf "\t{RUNE_C(0x%06X), RUNE_C(0x%06X), %s},\n", lo, i, props[i]
+	}
+
+	print "};"
+	print ""
+	print "__MLIB_DEFINE_BSEARCH(enum uprop_nt, lookup, NT_NONE)"
+	print ""
+	print "enum uprop_nt"
+	print "uprop_get_nt(rune ch)"
+	print "{"
+	print "\treturn ch < lengthof(lookup_lat1) ? lookup_lat1[ch] : mlib_lookup(ch);"
+	print "}"
+}
+' data/DerivedNumericType.txt
-- 
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