Implement proper support for utf8 characters in SDL2

From: terencehill <piuntn@gmail.com>

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@12097 d7cf8633-e32d-0410-b094-e92efae38249
::stable-branch::merge=0275b3fc9bbf9bea9dd5b7740ba34295a7514424

diff --git a/vid_sdl.c b/vid_sdl.c
index 934295d8e23eb01930750defb2ef088922cb8290..ba5a6fd7662caa2fd90bd3fc4b40a8c6b6394eb1 100644 (file)
--- a/vid_sdl.c
+++ b/vid_sdl.c
@@ -23,6 +23,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #include "quakedef.h"
 #include "image.h"
 #include "dpsoftrast.h"
+#include "utf8lib.h"
 
 #ifndef __IPHONEOS__
 #ifdef MACOSX
@@ -1213,8 +1214,7 @@ void Sys_SendKeyEvents( void )
        static qboolean sound_active = true;
        int keycode;
        int i;
-       int j;
-       int unicode;
+       Uchar unicode;
        SDL_Event event;
 
        VID_EnableJoystick(true);
@@ -1353,30 +1353,11 @@ void Sys_SendKeyEvents( void )
 #ifdef DEBUGSDLEVENTS
                                Con_DPrintf("SDL_Event: SDL_TEXTINPUT - text: %s\n", event.text.text);
 #endif
-                               // we have some characters to parse
-                               {
-                                       unicode = 0;
-                                       for (i = 0;event.text.text[i];)
-                                       {
-                                               unicode = event.text.text[i++];
-                                               if (unicode & 0x80)
-                                               {
-                                                       // UTF-8 character
-                                                       // strip high bits (we could count these to validate character length but we don't)
-                                                       for (j = 0x80;unicode & j;j >>= 1)
-                                                               unicode ^= j;
-                                                       for (;(event.text.text[i] & 0xC0) == 0x80;i++)
-                                                               unicode = (unicode << 6) | (event.text.text[i] & 0x3F);
-                                                       // low characters are invalid and could be bad, so replace them
-                                                       if (unicode < 0x80)
-                                                               unicode = '?'; // we could use 0xFFFD instead, the unicode substitute character
-                                               }
-                                               //Con_DPrintf("SDL_TEXTINPUT: K_TEXT %i \n", unicode);
-
-                                               Key_Event(K_TEXT, unicode, true);
-                                               Key_Event(K_TEXT, unicode, false);
-                                       }
-                               }
+                               // convert utf8 string to char
+                               // NOTE: this code is supposed to run even if utf8enable is 0
+                               unicode = u8_getchar_utf8_enabled(event.text.text + (int)u8_bytelen(event.text.text, 0), NULL);
+                               Key_Event(K_TEXT, unicode, true);
+                               Key_Event(K_TEXT, unicode, false);
                                break;
                        case SDL_MOUSEMOTION:
                                break;