Function: fillarray

fillarray is a function defined in fns.c.

Signature

(fillarray ARRAY ITEM)

Documentation

Store each element of ARRAY with ITEM.

ARRAY is a vector, string, char-table, or bool-vector.

Source Code

// Defined in /usr/src/emacs/src/fns.c
{
  register ptrdiff_t size, idx;

  if (VECTORP (array))
    for (idx = 0, size = ASIZE (array); idx < size; idx++)
      ASET (array, idx, item);
  else if (CHAR_TABLE_P (array))
    {
      int i;

      for (i = 0; i < (1 << CHARTAB_SIZE_BITS_0); i++)
	set_char_table_contents (array, i, item);
      set_char_table_defalt (array, item);
    }
  else if (STRINGP (array))
    {
      unsigned char *p = SDATA (array);
      CHECK_CHARACTER (item);
      int charval = XFIXNAT (item);
      size = SCHARS (array);
      if (size != 0)
	{
	  CHECK_IMPURE (array, XSTRING (array));
	  unsigned char str[MAX_MULTIBYTE_LENGTH];
	  int len;
	  if (STRING_MULTIBYTE (array))
	    len = CHAR_STRING (charval, str);
	  else
	    {
	      str[0] = charval;
	      len = 1;
	    }

	  ptrdiff_t size_byte = SBYTES (array);
	  if (len == 1 && size == size_byte)
	    memset (p, str[0], size);
	  else
	    {
	      ptrdiff_t product;
	      if (INT_MULTIPLY_WRAPV (size, len, &product)
		  || product != size_byte)
		error ("Attempt to change byte length of a string");
	      for (idx = 0; idx < size_byte; idx++)
		*p++ = str[idx % len];
	    }
	}
    }
  else if (BOOL_VECTOR_P (array))
    return bool_vector_fill (array, item);
  else
    wrong_type_argument (Qarrayp, array);
  return array;
}