X-Git-Url: https://git.distorted.org.uk/u/mdw/putty/blobdiff_plain/3d88e64dfcf5dc0fd361ce0c504c67a9196ce44c..691b58ac4403cf73a1d71c6c2bbd5d8246d95699:/ldiscucs.c

diff --git a/ldiscucs.c b/ldiscucs.c
index 4ac28d7e..c4fc726d 100644
--- a/ldiscucs.c
+++ b/ldiscucs.c
@@ -49,19 +49,39 @@ void luni_send(void *handle, wchar_t * widebuf, int len, int interactive)
     if (in_utf(ldisc->term)) {
 	/* UTF is a simple algorithm */
 	for (p = linebuffer, i = 0; i < len; i++) {
-	    wchar_t ch = widebuf[i];
-	    /* We only deal with 16-bit wide chars */
-	    if ((ch&0xF800) == 0xD800) ch = '.';
+	    unsigned long ch = widebuf[i];
+
+	    if ((ch & 0xF800) == 0xD800) {
+#ifdef PLATFORM_IS_UTF16
+		if (i+1 < len) {
+		    unsigned long ch2 = widebuf[i+1];
+		    if ((ch & 0xFC00) == 0xD800 &&
+			(ch2 & 0xFC00) == 0xDC00) {
+			ch = 0x10000 + ((ch & 0x3FF) << 10) + (ch2 & 0x3FF);
+			i++;
+		    }
+		} else
+#endif
+		{
+		    /* Unrecognised UTF-16 sequence */
+		    ch = '.';
+		}
+	    }
 
 	    if (ch < 0x80) {
 		*p++ = (char) (ch);
 	    } else if (ch < 0x800) {
-		*p++ = (0xC0 | (ch >> 6));
-		*p++ = (0x80 | (ch & 0x3F));
+		*p++ = (char) (0xC0 | (ch >> 6));
+		*p++ = (char) (0x80 | (ch & 0x3F));
+	    } else if (ch < 0x10000) {
+		*p++ = (char) (0xE0 | (ch >> 12));
+		*p++ = (char) (0x80 | ((ch >> 6) & 0x3F));
+		*p++ = (char) (0x80 | (ch & 0x3F));
 	    } else {
-		*p++ = (0xE0 | (ch >> 12));
-		*p++ = (0x80 | ((ch >> 6) & 0x3F));
-		*p++ = (0x80 | (ch & 0x3F));
+		*p++ = (char) (0xF0 | (ch >> 18));
+		*p++ = (char) (0x80 | ((ch >> 12) & 0x3F));
+		*p++ = (char) (0x80 | ((ch >> 6) & 0x3F));
+		*p++ = (char) (0x80 | (ch & 0x3F));
 	    }
 	}
     } else {