mirror of
git://sourceware.org/git/lvm2.git
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161 lines
3.4 KiB
C
161 lines
3.4 KiB
C
/*
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* Copyright (C) 2003-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2012 Red Hat, Inc. All rights reserved.
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*
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* This file is part of LVM2.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU Lesser General Public License v.2.1.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "lib.h"
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#include "str_list.h"
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struct dm_list *str_list_create(struct dm_pool *mem)
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{
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struct dm_list *sl;
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if (!(sl = dm_pool_alloc(mem, sizeof(struct dm_list)))) {
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log_errno(ENOMEM, "str_list allocation failed");
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return NULL;
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}
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dm_list_init(sl);
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return sl;
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}
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static int _str_list_add_no_dup_check(struct dm_pool *mem, struct dm_list *sll, const char *str, int as_first)
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{
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struct dm_str_list *sln;
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if (!str)
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return_0;
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if (!(sln = dm_pool_alloc(mem, sizeof(*sln))))
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return_0;
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sln->str = str;
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if (as_first)
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dm_list_add_h(sll, &sln->list);
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else
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dm_list_add(sll, &sln->list);
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return 1;
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}
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int str_list_add_no_dup_check(struct dm_pool *mem, struct dm_list *sll, const char *str)
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{
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return _str_list_add_no_dup_check(mem, sll, str, 0);
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}
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int str_list_add_h_no_dup_check(struct dm_pool *mem, struct dm_list *sll, const char *str)
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{
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return _str_list_add_no_dup_check(mem, sll, str, 1);
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}
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int str_list_add(struct dm_pool *mem, struct dm_list *sll, const char *str)
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{
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if (!str)
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return_0;
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/* Already in list? */
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if (str_list_match_item(sll, str))
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return 1;
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return str_list_add_no_dup_check(mem, sll, str);
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}
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/* Add contents of sll2 to sll */
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int str_list_add_list(struct dm_pool *mem, struct dm_list *sll, struct dm_list *sll2)
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{
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struct dm_str_list *sl;
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if (!sll2)
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return_0;
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dm_list_iterate_items(sl, sll2)
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if (!str_list_add(mem, sll, sl->str))
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return_0;
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return 1;
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}
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void str_list_del(struct dm_list *sll, const char *str)
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{
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struct dm_list *slh, *slht;
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dm_list_iterate_safe(slh, slht, sll)
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if (!strcmp(str, dm_list_item(slh, struct dm_str_list)->str))
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dm_list_del(slh);
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}
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int str_list_dup(struct dm_pool *mem, struct dm_list *sllnew,
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const struct dm_list *sllold)
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{
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struct dm_str_list *sl;
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dm_list_init(sllnew);
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dm_list_iterate_items(sl, sllold) {
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if (!str_list_add(mem, sllnew, dm_pool_strdup(mem, sl->str)))
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return_0;
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}
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return 1;
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}
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/*
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* Is item on list?
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*/
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int str_list_match_item(const struct dm_list *sll, const char *str)
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{
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struct dm_str_list *sl;
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dm_list_iterate_items(sl, sll)
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if (!strcmp(str, sl->str))
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return 1;
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return 0;
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}
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/*
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* Is at least one item on both lists?
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* If tag_matched is non-NULL, it is set to the tag that matched.
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*/
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int str_list_match_list(const struct dm_list *sll, const struct dm_list *sll2, const char **tag_matched)
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{
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struct dm_str_list *sl;
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dm_list_iterate_items(sl, sll)
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if (str_list_match_item(sll2, sl->str)) {
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if (tag_matched)
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*tag_matched = sl->str;
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return 1;
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}
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return 0;
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}
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/*
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* Do both lists contain the same set of items?
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*/
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int str_list_lists_equal(const struct dm_list *sll, const struct dm_list *sll2)
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{
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struct dm_str_list *sl;
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if (dm_list_size(sll) != dm_list_size(sll2))
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return 0;
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dm_list_iterate_items(sl, sll)
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if (!str_list_match_item(sll2, sl->str))
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return 0;
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return 1;
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}
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