Add uprop_get_nv()

1 files changed, 63 insertions, 0 deletions

diff --git a/gen/prop/nv b/gen/prop/nv
new file mode 100755
index 0000000..713ea40
--- /dev/null
+++ b/gen/prop/nv
@@ -0,0 +1,63 @@
+#!/bin/sh
+
+set -e
+cd "${0%/*}/../.."
+exec >lib/unicode/prop/uprop_get_nv.c
+
+gawk '
+BEGIN {
+	FS = "( *#.*| +; +)"
+
+	print "/* This file is autogenerated by gen/prop/nv; DO NOT EDIT. */"
+	print ""
+	print "#include <float.h>"
+	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(/^; /, "", $3)
+		props[i] = $3
+	}
+}
+
+END {
+	print "static constexpr double lookup_lat1[] = {"
+	for (i = 0; i < 0x100; i++) {
+		if (i % 8 == 0)
+			printf "\t"
+		printf "%3s,%s", props[i] ? props[i] : "NAN", i % 8 == 7 ? "\n" : " "
+	}
+	print "};"
+	print ""
+	print "static const struct {"
+	print "\trune k;"
+	print "\tdouble v;"
+	print "} lookup[] = {"
+
+	for (i = 0x100; i <= 0x10FFFF; i++) {
+		if (!props[i])
+			continue
+		printf "\t{RUNE_C(0x%06X), %s},\n", i, props[i]
+	}
+
+	print "};"
+	print ""
+	print "__MLIB_DEFINE_BSEARCH_KV(double, lookup, NAN)"
+	print ""
+	print "double"
+	print "uprop_get_nv(rune ch)"
+	print "{"
+	print "\treturn ch < lengthof(lookup_lat1) ? lookup_lat1[ch] : mlib_lookup_kv(ch);"
+	print "}"
+}
+' data/DerivedNumericValues.txt