a lot of stuff tbh

src/utf8.h

@@ -0,0 +1,19 @@
+#pragma once
+
+#include "collatypes.h"
+
+typedef uint32 rune;
+
+enum {
+    UTF8_MAX_SIZE = 4,
+    UTF8_INVALID = 0x80
+};
+
+// grabs the next UTF-8 codepoint and advances string ptr
+rune utf8Decode(const char **str);
+// encodes a codepoint as UTF-8 and returns the length
+usize utf8Encode(char *str, rune ch);
+// returns the size of the next UTF-8 codepoint
+int utf8Size(const char *str);
+// returns the size of a UTF-8 codepoint
+usize utf8CpSize(rune ch);