Add uprop_get_bmg()

1 files changed, 54 insertions, 0 deletions

diff --git a/gen/prop/bmg b/gen/prop/bmg
new file mode 100755
index 0000000..ae5beff
--- /dev/null
+++ b/gen/prop/bmg
@@ -0,0 +1,54 @@
+#!/bin/sh
+
+set -e
+cd "${0%/*}/../.."
+exec >lib/unicode/prop/uprop_get_bmg.c
+
+gawk '
+BEGIN {
+	FS = " *(; *|#.*)"
+
+	print "/* This file is autogenerated by gen/prop/bmg; DO NOT EDIT. */"
+	print ""
+	print "#include \"__bsearch.h\""
+	print "#include \"macros.h\""
+	print "#include \"rune.h\""
+	print "#include \"unicode/prop.h\""
+	print ""
+}
+
+/^[^#]/ {
+	props[strtonum("0X" $1)] = strtonum("0X" $2)
+}
+
+END {
+	print "static constexpr rune lookup_lat1[] = {"
+	for (i = 0; i < 0x100; i++) {
+		if (i % 8 == 0)
+			printf "\t"
+		printf "0x%02X,%s", (props[i] ? props[i] : 0), \
+			i % 8 == 7 ? "\n" : " "
+	}
+	print "};"
+	print ""
+	print "static const struct {"
+	print "\trune k, v;"
+	print "} lookup[] = {"
+
+	for (i = 0x100; i <= 0x10FFFF; i++) {
+		if (!props[i])
+			continue
+		printf "\t{RUNE_C(0x%06X), RUNE_C(0x%06X)},\n", i, props[i]
+	}
+
+	print "};"
+	print ""
+	print "__MLIB_DEFINE_BSEARCH_KV(rune, lookup, 0)"
+	print ""
+	print "rune"
+	print "uprop_get_bmg(rune ch)"
+	print "{"
+	print "\treturn ch < lengthof(lookup_lat1) ? lookup_lat1[ch] : mlib_lookup_kv(ch);"
+	print "}"
+}
+' data/BidiMirroring