unicode support

1 files changed, 29 insertions, 9 deletions

diff --git a/code/fe310/eos/eve/screen/font.c b/code/fe310/eos/eve/screen/font.c
index 6fc7d39..da02983 100644
--- a/code/fe310/eos/eve/screen/font.c
+++ b/code/fe310/eos/eve/screen/font.c
@@ -1,6 +1,8 @@
 #include <stdlib.h>
 
 #include "eve.h"
+#include "unicode.h"
+
 #include "font.h"
 
 void eve_font_init(EVEFont *font, uint8_t font_id) {
@@ -14,23 +16,41 @@ void eve_font_init(EVEFont *font, uint8_t font_id) {
     eve_readb(p, font->w_ch, 128);
 }
 
-uint16_t eve_font_str_w(EVEFont *font, char *s) {
+uint8_t eve_font_ch_w(EVEFont *font, utf32_t ch) {
+    if (ch < 128) return font->w_ch[ch];
+    return 0;
+}
+
+uint16_t eve_font_str_w(EVEFont *font, utf8_t *str) {
     uint16_t r = 0;
+    utf32_t ch;
+    uint8_t ch_w;
+    uint8_t ch_l;
 
-    while (*s) {
-        r += font->w_ch[*s];
-        s++;
+    if (str == NULL) return 0;
+
+    while (*str) {
+        ch_l = utf8_dec(str, &ch);
+        ch_w = eve_font_ch_w(font, ch);
+        r += ch_w;
+        str += ch_l;
     }
 
     return r;
 }
 
-uint16_t eve_font_buf_w(EVEFont *font, char *buf, uint16_t buf_len) {
-    int i;
+uint16_t eve_font_buf_w(EVEFont *font, utf8_t *buf, uint16_t buf_len) {
+    int i = 0;
     uint16_t r = 0;
-
-    for (i=0; i<buf_len; i++) {
-        r += font->w_ch[*(buf + i)];
+    utf32_t ch;
+    uint8_t ch_w;
+    uint8_t ch_l;
+
+    while (i < buf_len) {
+        ch_l = utf8_dec(buf + i, &ch);
+        ch_w = eve_font_ch_w(font, ch);
+        r += ch_w;
+        i += ch_l;
     }
 
     return r;