Improving name-truncation detection

[Wayne Davison]

On Mon, Jan 19, 2004 at 05:44:20PM -0800, Wayne Davison wrote:
> I'll append my util.c patch to this email.

Or perhaps to this one...

..wayne..
-------------- next part --------------
--- util.c	2 Jan 2004 07:31:02 -0000	1.123
+++ util.c	20 Jan 2004 01:14:34 -0000
@@ -553,6 +553,36 @@ void strlower(char *s)
 	}
 }
 
+/* Join any number of strings together, putting them in "dest".  The return
+ * value is the length of all the strings, regardless of whether they fit in
+ * destsize or not.  Just NULL-terminate the list of strings.  This function
+ * is _much_ faster than a comparable snprintf() call. */
+size_t stringjoin(char *dest, size_t destsize, ...)
+{
+	va_list ap;  
+	size_t len, ret = 0;
+	const char *src;
+
+	va_start(ap, destsize);
+	while (1) {
+		if (!(src = va_arg(ap, const char *)))
+			break;
+		len = strlen(src);
+		ret += len;
+		if (destsize > 1) {
+			if (len >= destsize)
+				len = destsize - 1;
+			memcpy(dest, src, len);
+			destsize -= len;
+			dest += len;
+		}
+	}
+	*dest = '\0';
+	va_end(ap);
+
+	return ret;
+}
+
 void clean_fname(char *name)
 {
 	char *p;