Function mbbuf_get_char

gl/lib/mbbuf.h:150–166

Get the next character in the buffer, filling it from FP if necessary. If an invalid multi-byte character is seen, we assume the program wants to fall back to the read byte. */

   If an invalid multi-byte character is seen, we assume the program wants to
   fall back to the read byte.  */
MBBUF_INLINE mcel_t
mbbuf_get_char (mbbuf_t *mbbuf)
{
  idx_t available = mbbuf_fill (mbbuf);
  if (available <= 0)
    return (mcel_t) { .ch = MBBUF_EOF };
  mcel_t g = mcel_scan (mbbuf->buffer + mbbuf->offset,
                        mbbuf->buffer + mbbuf->length);
  if (! g.err)
    mbbuf->offset += g.len;
  else
    {
      /* Assume the program will emit the byte, but keep the error flag.  */
      g.ch = (unsigned char) mbbuf->buffer[mbbuf->offset++];
    }
  return g;
}

/* Returns a pointer to the first byte in the previously read character from
   mbbuf_get_char.  */