libevdev: Rewrite make-event-names in awk

1 files changed, 167 insertions, 0 deletions

diff --git a/pkg/libevdev/eventnames.awk b/pkg/libevdev/eventnames.awk
new file mode 100644
index 00000000..0c4fb32f
--- /dev/null
+++ b/pkg/libevdev/eventnames.awk
@@ -0,0 +1,167 @@
+BEGIN {
+	blacklist["EV_VERSION"] = 1
+	blacklist["BTN_MISC"] = 1
+	blacklist["BTN_MOUSE"] = 1
+	blacklist["BTN_JOYSTICK"] = 1
+	blacklist["BTN_GAMEPAD"] = 1
+	blacklist["BTN_DIGI"] = 1
+	blacklist["BTN_WHEEL"] = 1
+	blacklist["BTN_TRIGGER_HAPPY"] = 1
+
+	prefixes[++numprefixes] = "EV"
+	prefixes[++numprefixes] = "REL"
+	prefixes[++numprefixes] = "ABS"
+	prefixes[++numprefixes] = "KEY"
+	prefixes[++numprefixes] = "BTN"
+	prefixes[++numprefixes] = "LED"
+	prefixes[++numprefixes] = "SND"
+	prefixes[++numprefixes] = "MSC"
+	prefixes[++numprefixes] = "SW"
+	prefixes[++numprefixes] = "FF"
+	prefixes[++numprefixes] = "SYN"
+	prefixes[++numprefixes] = "REP"
+	prefixes[++numprefixes] = "INPUT_PROP"
+
+	names[++numnames] = "abs"
+	names[++numnames] = "btn"
+	names[++numnames] = "ff"
+	names[++numnames] = "key"
+	names[++numnames] = "led"
+	names[++numnames] = "msc"
+	names[++numnames] = "rel"
+	names[++numnames] = "rep"
+	names[++numnames] = "snd"
+	names[++numnames] = "sw"
+	names[++numnames] = "syn"
+
+	addbtns["BTN_A"] = 1
+	addbtns["BTN_B"] = 1
+	addbtns["BTN_X"] = 1
+	addbtns["BTN_Y"] = 1
+}
+
+function print_bits(prefix) {
+	printf "static const char * const %s_map[%s_MAX + 1] = {\n", prefix, toupper(prefix)
+	for (j = 1; j <= numbits[prefix]; ++j) {
+		split(bits[prefix, j], item, SUBSEP)
+		printf "	[%s] = \"%s\",\n", item[1], item[1]
+	}
+	if (prefix == "key") {
+		for (j = 1; j <= numbits["btn"]; ++j) {
+			split(bits["btn", j], item, SUBSEP)
+			printf "	[%s] = \"%s\",\n", item[1], item[1]
+		}
+	}
+	print "};"
+	print ""
+}
+
+function print_map() {
+	print "static const char * const * const event_type_map[EV_MAX + 1] = {"
+	for (i = 1; i <= numprefixes; ++i) {
+		prefix = prefixes[i]
+		if (prefix == "BTN" || prefix == "EV" || prefix == "INPUT_PROP")
+			continue
+		printf "	[EV_%s] = %s_map,\n", prefix, tolower(prefix)
+	}
+	print "};"
+	print ""
+
+	print "#if __clang__"
+	print "#pragma clang diagnostic push"
+	print "#pragma clang diagnostic ignored \"-Winitializer-overrides\""
+	print "#else"
+	print "#pragma GCC diagnostic push"
+	print "#pragma GCC diagnostic ignored \"-Woverride-init\""
+	print "#endif"
+	print "static const int ev_max[EV_MAX + 1] = {"
+	print "	[0 ... EV_MAX] = -1,"
+	for (i = 1; i <= numprefixes; ++i) {
+		prefix = prefixes[i]
+		if (prefix == "BTN" || prefix == "EV" || prefix == "INPUT_PROP")
+			continue
+		printf "	[EV_%s] = %s_MAX,\n", prefix, prefix
+	}
+	print "};"
+	print "#if __clang__"
+	print "#pragma clang diagnostic pop /* \"-Winitializer-overrides\" */"
+	print "#else"
+	print "#pragma GCC diagnostic pop /* \"-Woverride-init\" */"
+	print "#endif"
+	print ""
+}
+
+function print_lookup(prefix) {
+	sort = "sort -t '\"' -k 2"
+	for (j = 1; j <= numbits[prefix]; ++j) {
+		split(bits[prefix, j], item, SUBSEP)
+		printf "	{ .name = \"%s\", .value = %s },\n", item[1], item[1] | sort
+	}
+	if (prefix == "btn") {
+		for (name in addbtns)
+			printf "	{ .name = \"%s\", .value = %s },\n", name, name | sort
+	}
+	close(sort)
+}
+
+function print_lookup_table() {
+	print "struct name_entry {"
+	print "	const char *name;"
+	print "	unsigned int value;"
+	print "};"
+	print ""
+	print "static const struct name_entry ev_names[] = {"
+	print_lookup("ev")
+	print "};"
+	print ""
+
+	print "static const struct name_entry code_names[] = {"
+	for (i = 1; i <= numnames; ++i)
+		print_lookup(names[i])
+	print "};"
+	print ""
+	print "static const struct name_entry prop_names[] = {"
+	print_lookup("input_prop")
+	print "};"
+	print ""
+}
+
+function print_mapping_table() {
+	print "/* THIS FILE IS GENERATED, DO NOT EDIT */"
+	print ""
+	print "#ifndef EVENT_NAMES_H"
+	print "#define EVENT_NAMES_H"
+	print ""
+
+	for (i = 1; i <= numprefixes; ++i) {
+		prefix = prefixes[i]
+		if (prefix == "BTN")
+			continue
+		print_bits(tolower(prefix))
+	}
+
+	print_map()
+	print_lookup_table()
+
+	print "#endif /* EVENT_NAMES_H */"
+}
+
+/^#define/ {
+	if (blacklist[$2])
+		next
+	for (i = 1; i <= numprefixes; ++i) {
+		prefix = prefixes[i]
+		if ($3 !~ /^[0-9a-fx]+$/ || substr($2, 1, length(prefix) + 1) != prefix "_")
+			continue
+		idx = indexes[prefix, $3]
+		if (!idx) {
+			idx = ++numbits[tolower(prefix)]
+			indexes[prefix, $3] = idx
+		}
+		bits[tolower(prefix), idx] = $2 SUBSEP $3
+	}
+}
+
+END {
+	print_mapping_table()
+}