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Commit	Line	Data
	1	/*
	2	* Copyright (c) 1994 Christos Zoulas
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by Christos Zoulas.
	16	* 4. The name of the author may not be used to endorse or promote products
	17	* derived from this software without specific prior written permission.
	18	*
	19	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
	20	* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
	21	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	22	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
	23	* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	24	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	25	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	26	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	27	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	28	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	29	* SUCH DAMAGE.
	30	*/
	31
	32	#if defined(LIBC_SCCS) && !defined(lint)
	33	static char *rcsid = "$NetBSD: stringlist.c,v 1.2 1997/01/17 07:26:20 lukem Exp $";
	34	#endif /* LIBC_SCCS and not lint */
	35	#include <sys/cdefs.h>
	36	__FBSDID("$FreeBSD: src/lib/libc/gen/stringlist.c,v 1.7 2003/01/19 01:16:01 obrien Exp $");
	37
	38	#include "namespace.h"
	39	#include <stdio.h>
	40	#include <string.h>
	41	#include <err.h>
	42	#include <stdlib.h>
	43	#include <stringlist.h>
	44	#include "un-namespace.h"
	45
	46	#define _SL_CHUNKSIZE 20
	47
	48	/*
	49	* sl_init(): Initialize a string list
	50	*/
	51	StringList *
	52	sl_init()
	53	{
	54	StringList *sl;
	55
	56	sl = malloc(sizeof(StringList));
	57	if (sl == NULL)
	58	_err(1, "stringlist: %m");
	59
	60	sl->sl_cur = 0;
	61	sl->sl_max = _SL_CHUNKSIZE;
	62	sl->sl_str = malloc(sl->sl_max * sizeof(char *));
	63	if (sl->sl_str == NULL)
	64	_err(1, "stringlist: %m");
	65	return sl;
	66	}
	67
	68
	69	/*
	70	* sl_add(): Add an item to the string list
	71	*/
	72	int
	73	sl_add(sl, name)
	74	StringList *sl;
	75	char *name;
	76	{
	77	if (sl->sl_cur == sl->sl_max - 1) {
	78	sl->sl_max += _SL_CHUNKSIZE;
	79	sl->sl_str = reallocf(sl->sl_str, sl->sl_max * sizeof(char *));
	80	if (sl->sl_str == NULL)
	81	return (-1);
	82	}
	83	sl->sl_str[sl->sl_cur++] = name;
	84	return (0);
	85	}
	86
	87
	88	/*
	89	* sl_free(): Free a stringlist
	90	*/
	91	void
	92	sl_free(sl, all)
	93	StringList *sl;
	94	int all;
	95	{
	96	size_t i;
	97
	98	if (sl == NULL)
	99	return;
	100	if (sl->sl_str) {
	101	if (all)
	102	for (i = 0; i < sl->sl_cur; i++)
	103	free(sl->sl_str[i]);
	104	free(sl->sl_str);
	105	}
	106	free(sl);
	107	}
	108
	109
	110	/*
	111	* sl_find(): Find a name in the string list
	112	*/
	113	char *
	114	sl_find(sl, name)
	115	StringList *sl;
	116	char *name;
	117	{
	118	size_t i;
	119
	120	for (i = 0; i < sl->sl_cur; i++)
	121	if (strcmp(sl->sl_str[i], name) == 0)
	122	return sl->sl_str[i];
	123
	124	return NULL;
	125	}