From e3c90b41386986ef53e512994d6e2f7ceadfc177 Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Mon, 8 Nov 2021 02:07:23 +0100
Subject: Add window function to get key state, allow invalid utf8

---
 src/graphics/text.c | 26 ++++++++++++++------------
 1 file changed, 14 insertions(+), 12 deletions(-)

(limited to 'src/graphics/text.c')

diff --git a/src/graphics/text.c b/src/graphics/text.c
index 2f410d4..28840ce 100644
--- a/src/graphics/text.c
+++ b/src/graphics/text.c
@@ -20,8 +20,13 @@ static mgl_vec2f mgl_text_calculate_bounds(mgl_text *self) {
     float width = 0.0f;
     for(size_t i = 0; i < self->text_size;) {
         unsigned char *cp = (unsigned char*)&self->text[i];
-        uint32_t codepoint = 0;
-        const size_t clen = mgl_utf8_decode(cp, &codepoint);
+        uint32_t codepoint;
+        size_t clen;
+        if(!mgl_utf8_decode(cp, self->text_size - i, &codepoint, &clen)) {
+            codepoint = *cp;
+            clen = 1;
+        }
+
         if(codepoint == '\t') {
             if(mgl_font_get_glyph(self->font, ' ', &glyph) == 0) {
                 width += (glyph.advance * TAB_WIDTH);
@@ -60,20 +65,12 @@ void mgl_text_deinit(mgl_text *self) {
 }
 
 int mgl_text_set_string(mgl_text *self, const char *str, size_t str_size) {
-    if(str) {
-        if(!mgl_utf8_is_valid((const unsigned char*)str, str_size)) {
-            fprintf(stderr, "Error: mgl_text_set_string received an invalid utf8 string\n");
-            return -1;
-        }
-    }
-
     self->text = str;
     self->text_size = str_size;
     if(self->text && self->text_size > 0 && self->font)
         self->bounds = mgl_text_calculate_bounds(self);
     else
         self->bounds = (mgl_vec2f){ 0.0f, 0.0f };
-
     return 0;
 }
 
@@ -128,8 +125,13 @@ void mgl_text_draw(mgl_context *context, mgl_text *text) {
     context->gl.glBegin(GL_QUADS);
     for(size_t i = 0; i < text->text_size;) {
         unsigned char *cp = (unsigned char*)&text->text[i];
-        uint32_t codepoint = 0;
-        const size_t clen = mgl_utf8_decode(cp, &codepoint);
+        uint32_t codepoint;
+        size_t clen;
+        if(!mgl_utf8_decode(cp, text->text_size - i, &codepoint, &clen)) {
+            codepoint = *cp;
+            clen = 1;
+        }
+
         if(codepoint == '\t') {
             if(mgl_font_get_glyph(text->font, ' ', &glyph) == 0) {
                 position.x += (glyph.advance * TAB_WIDTH);
-- 
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