Do not check for valid utf8 in set text, render the invalid utf8 instead. Mmap fonts instead of loading the whole font

1 files changed, 16 insertions, 4 deletions

diff --git a/src/system/utf8.c b/src/system/utf8.c
index 35b0f2f..201fedf 100644
--- a/src/system/utf8.c
+++ b/src/system/utf8.c
@@ -20,19 +20,31 @@ static inline bool utf8_get_codepoint_length(unsigned char b, size_t *codepoint_
 
 /* TODO: Optimize (remove branching, etc) */
 bool mgl_utf8_decode(const unsigned char *str, size_t size, uint32_t *decoded_codepoint, size_t *codepoint_length) {
-    if(size == 0)
+    if(size == 0) {
+        *decoded_codepoint = 0;
+        *codepoint_length = 0;
         return false;
+    }
 
     size_t clen;
-    if(!utf8_get_codepoint_length(str[0], &clen))
+    if(!utf8_get_codepoint_length(str[0], &clen)) {
+        *decoded_codepoint = str[0];
+        *codepoint_length = 1;
         return false;
+    }
 
-    if(size < clen)
+    if(size < clen) {
+        *decoded_codepoint = str[0];
+        *codepoint_length = 1;
         return false;
+    }
 
     for(size_t i = 1; i < clen; ++i) {
-        if((str[i] & 0xC0) != 0x80)
+        if((str[i] & 0xC0) != 0x80) {
+            *decoded_codepoint = str[0];
+            *codepoint_length = 1;
             return false;
+        }
     }
 
     uint32_t codepoint;