1 files changed, 51 insertions, 0 deletions
diff --git a/mcproto/encode.ha b/mcproto/encode.ha
new file mode 100644
index 0000000..de30871
--- /dev/null
+++ b/mcproto/encode.ha
@@ -0,0 +1,51 @@
+use endian;
+use strings;
+use uuid;
+
+export fn encode_short(out: *[]u8, v: u16) void = {
+	const buf: [2]u8 = [0...];
+	endian::beputu16(buf, v);
+	append(out, buf...);
+};
+export fn encode_int(out: *[]u8, v: u32) void = {
+	const buf: [4]u8 = [0...];
+	endian::beputu32(buf, v);
+	append(out, buf...);
+};
+export fn encode_long(out: *[]u8, v: u64) void = {
+	const buf: [8]u8 = [0...];
+	endian::beputu64(buf, v);
+	append(out, buf...);
+};
+
+export fn encode_bool(out: *[]u8, v: bool) void = {
+	append(out, if (v) 1 else 0);
+};
+
+export fn encode_float(out: *[]u8, v: f32) void = {
+	encode_int(out, *(&v: *u32));
+};
+export fn encode_double(out: *[]u8, v: f64) void = {
+	encode_long(out, *(&v: *u64));
+};
+
+export fn encode_varint(out: *[]u8, v: i32) void = {
+	let v = v: u32;
+
+	for (true) {
+		const continues = v & 0x7f != v;
+		const high_bit: u8 = if (continues) 0x80 else 0x00;
+		append(out, (v & 0x7f): u8 | high_bit);
+		v >>= 7;
+		if (!continues) return;
+	};
+};
+
+export fn encode_string(out: *[]u8, string: str) void = {
+	encode_varint(out, len(string): i32);
+	append(out, strings::toutf8(string)...);
+};
+
+export fn encode_uuid(out: *[]u8, uuid: uuid::uuid) void = {
+	append(out, uuid...);
+};