Function dStr_printable

dlib/dlib.c:513–539

* Return a printable representation of the provided Dstr, limited to a length * of roughly maxlen. * * This is NOT threadsafe. */

 * This is NOT threadsafe.
 */
const char *dStr_printable(Dstr *in, int maxlen)
{
   int i;
   static const char *const HEX = "0123456789ABCDEF";
   static Dstr *out = NULL;

   if (in == NULL)
      return NULL;

   if (out)
      dStr_truncate(out, 0);
   else
      out = dStr_sized_new(in->len);

   for (i = 0; (i < in->len) && (out->len < maxlen); ++i) {
      if (isprint(in->str[i]) || (in->str[i] == '\n')) {
         dStr_append_c(out, in->str[i]);
      } else {
         dStr_append_l(out, "\\x", 2);
         dStr_append_c(out, HEX[(in->str[i] >> 4) & 15]);
         dStr_append_c(out, HEX[in->str[i] & 15]);
      }
   }
   if (out->len >= maxlen)
      dStr_append(out, "...");
   return out->str;
}

/*
 *- dList ---------------------------------------------------------------------