There was a conflict on the CVS server between MoreUTF8.h (an old file)

and moreUTF8.h, so they were removed by the nice people at SourceForge.
I am adding the good file back.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@5739 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kits/interface/BTextView/moreUTF8.h

@@ -0,0 +1,45 @@
+#ifndef __MOREUTF8
+#define __MOREUTF8
+
+
+static inline bool
+IsInsideGlyph(uchar ch)
+{
+	return (ch & 0xC0) == 0x80;
+}
+
+
+static inline uint32
+UTF8NextCharLen(const char *text)
+{
+	const char *ptr = text;
+	
+	if (ptr == NULL || *ptr == 0)
+		return 0;
+	
+	do {
+		ptr++;
+	} while (IsInsideGlyph(*ptr));
+				
+	return ptr - text;
+}
+
+
+static inline uint32
+UTF8PreviousCharLen(const char *text, const char *limit)
+{
+	const char *ptr = text;
+	
+	if (ptr == NULL || limit == NULL)
+		return 0;
+
+	do {
+		if (ptr == limit)
+			break;
+		ptr--;
+	} while (IsInsideGlyph(*ptr));
+				
+	return text - ptr;
+}
+
+#endif