136 lines
3.2 KiB
C
136 lines
3.2 KiB
C
/* $Id: compat_stringlist.c,v 1.8 2020/06/15 21:48:09 schwarze Exp $ */
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/* $NetBSD: stringlist.c,v 1.14 2015/05/21 01:29:13 christos Exp $ */
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/*-
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* Copyright (c) 1994, 1999 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Christos Zoulas.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <string.h>
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#include "compat_stringlist.h"
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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(void)
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{
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StringList *sl;
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sl = malloc(sizeof(StringList));
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if (sl == NULL)
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return NULL;
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sl->sl_cur = 0;
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sl->sl_max = _SL_CHUNKSIZE;
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sl->sl_str = reallocarray(NULL, sl->sl_max, sizeof(char *));
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if (sl->sl_str == NULL) {
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free(sl);
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sl = NULL;
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}
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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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int
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sl_add(StringList *sl, char *name)
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{
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if (sl->sl_cur == sl->sl_max - 1) {
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char **new;
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new = reallocarray(sl->sl_str, (sl->sl_max + _SL_CHUNKSIZE),
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sizeof(char *));
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if (new == NULL)
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return -1;
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sl->sl_max += _SL_CHUNKSIZE;
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sl->sl_str = new;
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}
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sl->sl_str[sl->sl_cur++] = name;
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return 0;
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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(StringList *sl, 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(StringList *sl, const 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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int
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sl_delete(StringList *sl, const char *name, int all)
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{
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size_t i, j;
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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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if (all)
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free(sl->sl_str[i]);
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for (j = i + 1; j < sl->sl_cur; j++)
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sl->sl_str[j - 1] = sl->sl_str[j];
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sl->sl_str[--sl->sl_cur] = NULL;
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return 0;
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}
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return -1;
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}
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