Changeset 3636

Timestamp:

06/18/08 21:33:41 (6 months ago)

Author:

kris

Message:

added a toStringz() for multiple char[] conversion

Files:

trunk/tango/stdc/stringz.d

r3149	r3636
7	7	version: Initial release: October 2006
8	8
9		author: Keinfarbton
	9	author: Keinfarbton & Kris
10	10
11	11	*******************************************************************************/
…	…
14	14
15	15	/*********************************
16		* Convert array of chars s[] to a C-style 0 terminated string.
	16	* Convert array of chars to a C-style 0 terminated string.
	17	* Providing a tmp will use that instead of the heap, where
	18	* appropriate.
17	19	*/
18	20
19		char* toStringz (char[] s)
	21	char* toStringz (char[] s, char[] tmp=null)
20	22	{
	23	static char[] empty = "\0";
	24
	25	auto len = s.length;
21	26	if (s.ptr)
22		if (! (s.length && s[$-1] is 0))
23		s = s ~ '\0';
	27	if (len)
	28	s = empty;
	29	else
	30	if (s[len-1] != 0)
	31	{
	32	if (tmp.length <= len)
	33	tmp = new char[len+1];
	34	tmp [0..len] = s;
	35	tmp [len] = 0;
	36	s = tmp;
	37	}
24	38	return s.ptr;
	39	}
	40
	41	/*********************************
	42	* Convert a series of char[] to C-style 0 terminated strings, using
	43	* tmp as a workspace and dst as a place to put the resulting char*'s.
	44	* This is handy for efficiently converting multiple strings at once.
	45	*
	46	* Returns a populated slice of dst
	47	*/
	48
	49	char[] toStringz (char[] tmp, char[] dst, char[][] strings...)
	50	{
	51	assert (dst.length >= strings.length);
	52
	53	int len = strings.length;
	54	foreach (s; strings)
	55	len += s.length;
	56	if (tmp.length < len)
	57	tmp.length = len;
	58
	59	foreach (i, s; strings)
	60	{
	61	dst[i] = toStringz (s, tmp);
	62	tmp = tmp [s.length + 1 .. len];
	63	}
	64	return dst [0 .. strings.length];
25	65	}
26	66