X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=unicode.h;h=b6a16e37afe21466577bacc4ba5e27cb8a3c872e;hb=1b1b7cdc86ac07b9b79bfeb201a23d048aefcae6;hp=208819766e46c877de3ec3e987baa4992b24eb19;hpb=5e80d9852edea8472cd478655d70f5c4a1eddbdc;p=cparser

diff --git a/unicode.h b/unicode.h
index 2088197..b6a16e3 100644
--- a/unicode.h
+++ b/unicode.h
@@ -2,6 +2,7 @@
 #define UNICODE_H
 
 #include <assert.h>
+#include "adt/obst.h"
 
 typedef unsigned int utf32;
 #define UTF32_PRINTF_FORMAT "%u"
@@ -44,4 +45,24 @@ static inline utf32 read_utf8_char(const char **p)
 	return result;
 }
 
+static inline void obstack_grow_utf8(struct obstack *const obst, utf32 const c)
+{
+	if (c < 0x80U) {
+		obstack_1grow(obst, c);
+	} else if (c < 0x800) {
+		obstack_1grow(obst, 0xC0 |  (c >>  6));
+		goto one_more;
+	} else if (c < 0x10000) {
+		obstack_1grow(obst, 0xE0 |  (c >> 12));
+		goto two_more;
+	} else {
+		obstack_1grow(obst, 0xF0 |  (c >> 18));
+		obstack_1grow(obst, 0x80 | ((c >> 12) & 0x3F));
+two_more:
+		obstack_1grow(obst, 0x80 | ((c >>  6) & 0x3F));
+one_more:
+		obstack_1grow(obst, 0x80 | ( c        & 0x3F));
+	}
+}
+
 #endif