lib/standard: Added services on NativeString and Char for the support of UTF-8

[nit.git] / lib / standard / kernel.nit

diff --git a/lib/standard/kernel.nit b/lib/standard/kernel.nit
index e05d152..c7f0751 100644 (file)
--- a/lib/standard/kernel.nit
+++ b/lib/standard/kernel.nit
@@ -719,10 +719,23 @@ universal Char
        redef type OTHER: Char
 
        redef fun object_id is intern
+       redef fun output `{
+               if(self < 128){
+                       printf("%c", self);
+               }else if(self < 2048){
+                       printf("%c%c", 0xC0 | ((0x7C0 & self) >> 6), 0x80 | (0x3F & self));
+               }else if(self < 65536){
+                       printf("%c%c%c", 0xE0 | ((0xF000 & self) >> 12), 0x80 | ((0xFC0 & self) >> 6) ,0x80 | (0x3F & self));
+               }else if(self < 2097152){
+                       printf("%c%c%c%c", 0xF0 | ((0x1C0000 & self) >> 18), 0x80 | ((0x3F000 & self) >> 12), 0x80 | ((0xFC0 & self) >> 6), 0x80 | (0x3F & self));
+               }else{
+                       // Bad char
+                       printf("%c", self);
+               }
+       `}
        redef fun hash do return ascii
        redef fun ==(o) is intern
        redef fun !=(o) is intern
-       redef fun output is intern
 
        redef fun <=(i) is intern
        redef fun <(i) is intern