+static WRBUF wrbuf_hex_str(const char *cstr)
+{
+ size_t i;
+ WRBUF w = wrbuf_alloc();
+ for (i = 0; cstr[i]; i++)
+ {
+ if (cstr[i] < ' ' || cstr[i] > 126)
+ wrbuf_printf(w, "\\%02X", cstr[i] & 0xff);
+ else
+ wrbuf_putc(w, cstr[i]);
+ }
+ return w;
+}
+