130 lines
3.3 KiB
C
130 lines
3.3 KiB
C
/* $NetBSD: stringlist.c,v 1.4 1997/07/21 14:07:35 jtc Exp $ */
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/*
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* Copyright (c) 1994 Christos Zoulas
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christos Zoulas.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: stringlist.c,v 1.4 1997/07/21 14:07:35 jtc Exp $");
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#endif /* LIBC_SCCS and not lint */
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#include "namespace.h"
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#include <stdio.h>
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#include <string.h>
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#include <err.h>
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#include <stdlib.h>
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#include <stringlist.h>
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#ifdef __weak_alias
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__weak_alias(sl_add,_sl_add);
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__weak_alias(sl_find,_sl_find);
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__weak_alias(sl_free,_sl_free);
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__weak_alias(sl_init,_sl_init);
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#endif
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#define _SL_CHUNKSIZE 20
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/*
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* sl_init(): Initialize a string list
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*/
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StringList *
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sl_init()
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{
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StringList *sl = malloc(sizeof(StringList));
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if (sl == NULL)
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err(1, "stringlist: %m");
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sl->sl_cur = 0;
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sl->sl_max = _SL_CHUNKSIZE;
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sl->sl_str = malloc(sl->sl_max * sizeof(char *));
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if (sl->sl_str == NULL)
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err(1, "stringlist: %m");
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return sl;
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}
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/*
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* sl_add(): Add an item to the string list
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*/
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void
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sl_add(sl, name)
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StringList *sl;
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char *name;
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{
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if (sl->sl_cur == sl->sl_max - 1) {
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sl->sl_max += _SL_CHUNKSIZE;
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sl->sl_str = realloc(sl->sl_str, sl->sl_max * sizeof(char *));
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if (sl->sl_str == NULL)
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err(1, "stringlist: %m");
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}
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sl->sl_str[sl->sl_cur++] = name;
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}
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/*
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* sl_free(): Free a stringlist
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*/
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void
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sl_free(sl, all)
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StringList *sl;
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int all;
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{
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size_t i;
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if (sl == NULL)
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return;
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if (sl->sl_str) {
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if (all)
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for (i = 0; i < sl->sl_cur; i++)
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free(sl->sl_str[i]);
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free(sl->sl_str);
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}
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free(sl);
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}
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/*
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* sl_find(): Find a name in the string list
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*/
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char *
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sl_find(sl, name)
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StringList *sl;
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char *name;
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{
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size_t i;
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for (i = 0; i < sl->sl_cur; i++)
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if (strcmp(sl->sl_str[i], name) == 0)
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return sl->sl_str[i];
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return NULL;
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}
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