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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 18:37:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 18:37:14 +0000 |
commit | ea648e70a989cca190cd7403fe892fd2dcc290b4 (patch) | |
tree | e2b6b1c647da68b0d4d66082835e256eb30970e8 /unit/atf-src/atf-c/detail/list.c | |
parent | Initial commit. (diff) | |
download | bind9-upstream.tar.xz bind9-upstream.zip |
Adding upstream version 1:9.11.5.P4+dfsg.upstream/1%9.11.5.P4+dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'unit/atf-src/atf-c/detail/list.c')
-rw-r--r-- | unit/atf-src/atf-c/detail/list.c | 388 |
1 files changed, 388 insertions, 0 deletions
diff --git a/unit/atf-src/atf-c/detail/list.c b/unit/atf-src/atf-c/detail/list.c new file mode 100644 index 0000000..d14216e --- /dev/null +++ b/unit/atf-src/atf-c/detail/list.c @@ -0,0 +1,388 @@ +/* Copyright (c) 2008 The NetBSD Foundation, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND + * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER + * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN + * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ + +#include "atf-c/detail/list.h" + +#include <stdlib.h> +#include <string.h> + +#include "atf-c/detail/sanity.h" +#include "atf-c/error.h" +#include "atf-c/utils.h" + +/* --------------------------------------------------------------------- + * Auxiliary functions. + * --------------------------------------------------------------------- */ + +struct list_entry { + struct list_entry *m_prev; + struct list_entry *m_next; + void *m_object; + bool m_managed; +}; + +static +atf_list_citer_t +entry_to_citer(const atf_list_t *l, const struct list_entry *le) +{ + atf_list_citer_t iter; + iter.m_list = l; + iter.m_entry = le; + return iter; +} + +static +atf_list_iter_t +entry_to_iter(atf_list_t *l, struct list_entry *le) +{ + atf_list_iter_t iter; + iter.m_list = l; + iter.m_entry = le; + return iter; +} + +static +struct list_entry * +new_entry(void *object, bool managed) +{ + struct list_entry *le; + + le = (struct list_entry *)malloc(sizeof(*le)); + if (le != NULL) { + le->m_prev = le->m_next = NULL; + le->m_object = object; + le->m_managed = managed; + } else + free(object); + + return le; +} + +static +void +delete_entry(struct list_entry *le) +{ + if (le->m_managed) + free(le->m_object); + + free(le); +} + +static +struct list_entry * +new_entry_and_link(void *object, bool managed, struct list_entry *prev, + struct list_entry *next) +{ + struct list_entry *le; + + le = new_entry(object, managed); + if (le != NULL) { + le->m_prev = prev; + le->m_next = next; + + prev->m_next = le; + next->m_prev = le; + } + + return le; +} + +/* --------------------------------------------------------------------- + * The "atf_list_citer" type. + * --------------------------------------------------------------------- */ + +/* + * Getters. + */ + +const void * +atf_list_citer_data(const atf_list_citer_t citer) +{ + const struct list_entry *le = citer.m_entry; + PRE(le != NULL); + return le->m_object; +} + +atf_list_citer_t +atf_list_citer_next(const atf_list_citer_t citer) +{ + const struct list_entry *le = citer.m_entry; + atf_list_citer_t newciter; + + PRE(le != NULL); + + newciter = citer; + newciter.m_entry = le->m_next; + + return newciter; +} + +bool +atf_equal_list_citer_list_citer(const atf_list_citer_t i1, + const atf_list_citer_t i2) +{ + return i1.m_list == i2.m_list && i1.m_entry == i2.m_entry; +} + +/* --------------------------------------------------------------------- + * The "atf_list_iter" type. + * --------------------------------------------------------------------- */ + +/* + * Getters. + */ + +void * +atf_list_iter_data(const atf_list_iter_t iter) +{ + const struct list_entry *le = iter.m_entry; + PRE(le != NULL); + return le->m_object; +} + +atf_list_iter_t +atf_list_iter_next(const atf_list_iter_t iter) +{ + const struct list_entry *le = iter.m_entry; + atf_list_iter_t newiter; + + PRE(le != NULL); + + newiter = iter; + newiter.m_entry = le->m_next; + + return newiter; +} + +bool +atf_equal_list_iter_list_iter(const atf_list_iter_t i1, + const atf_list_iter_t i2) +{ + return i1.m_list == i2.m_list && i1.m_entry == i2.m_entry; +} + +/* --------------------------------------------------------------------- + * The "atf_list" type. + * --------------------------------------------------------------------- */ + +/* + * Constructors and destructors. + */ + +atf_error_t +atf_list_init(atf_list_t *l) +{ + struct list_entry *lebeg, *leend; + + lebeg = new_entry(NULL, false); + if (lebeg == NULL) { + return atf_no_memory_error(); + } + + leend = new_entry(NULL, false); + if (leend == NULL) { + free(lebeg); + return atf_no_memory_error(); + } + + lebeg->m_next = leend; + lebeg->m_prev = NULL; + + leend->m_next = NULL; + leend->m_prev = lebeg; + + l->m_size = 0; + l->m_begin = lebeg; + l->m_end = leend; + + return atf_no_error(); +} + +void +atf_list_fini(atf_list_t *l) +{ + struct list_entry *le; + size_t freed; + + le = (struct list_entry *)l->m_begin; + freed = 0; + while (le != NULL) { + struct list_entry *lenext; + + lenext = le->m_next; + delete_entry(le); + le = lenext; + + freed++; + } + INV(freed == l->m_size + 2); +} + +/* + * Getters. + */ + +atf_list_iter_t +atf_list_begin(atf_list_t *l) +{ + struct list_entry *le = l->m_begin; + return entry_to_iter(l, le->m_next); +} + +atf_list_citer_t +atf_list_begin_c(const atf_list_t *l) +{ + const struct list_entry *le = l->m_begin; + return entry_to_citer(l, le->m_next); +} + +atf_list_iter_t +atf_list_end(atf_list_t *l) +{ + return entry_to_iter(l, l->m_end); +} + +atf_list_citer_t +atf_list_end_c(const atf_list_t *l) +{ + return entry_to_citer(l, l->m_end); +} + +void * +atf_list_index(atf_list_t *list, const size_t idx) +{ + atf_list_iter_t iter; + + PRE(idx < atf_list_size(list)); + + iter = atf_list_begin(list); + { + size_t pos = 0; + while (pos < idx && + !atf_equal_list_iter_list_iter((iter), atf_list_end(list))) { + iter = atf_list_iter_next(iter); + pos++; + } + } + return atf_list_iter_data(iter); +} + +const void * +atf_list_index_c(const atf_list_t *list, const size_t idx) +{ + atf_list_citer_t iter; + + PRE(idx < atf_list_size(list)); + + iter = atf_list_begin_c(list); + { + size_t pos = 0; + while (pos < idx && + !atf_equal_list_citer_list_citer((iter), + atf_list_end_c(list))) { + iter = atf_list_citer_next(iter); + pos++; + } + } + return atf_list_citer_data(iter); +} + +size_t +atf_list_size(const atf_list_t *l) +{ + return l->m_size; +} + +char ** +atf_list_to_charpp(const atf_list_t *l) +{ + char **array; + atf_list_citer_t iter; + size_t i; + + array = malloc(sizeof(char *) * (atf_list_size(l) + 1)); + if (array == NULL) + goto out; + + i = 0; + atf_list_for_each_c(iter, l) { + array[i] = strdup((const char *)atf_list_citer_data(iter)); + if (array[i] == NULL) { + atf_utils_free_charpp(array); + array = NULL; + goto out; + } + + i++; + } + array[i] = NULL; + +out: + return array; +} + +/* + * Modifiers. + */ + +atf_error_t +atf_list_append(atf_list_t *l, void *data, bool managed) +{ + struct list_entry *le, *next, *prev; + atf_error_t err; + + next = (struct list_entry *)l->m_end; + prev = next->m_prev; + le = new_entry_and_link(data, managed, prev, next); + if (le == NULL) + err = atf_no_memory_error(); + else { + l->m_size++; + err = atf_no_error(); + } + + return err; +} + +void +atf_list_append_list(atf_list_t *l, atf_list_t *src) +{ + struct list_entry *e1, *e2, *ghost1, *ghost2; + + ghost1 = (struct list_entry *)l->m_end; + ghost2 = (struct list_entry *)src->m_begin; + + e1 = ghost1->m_prev; + e2 = ghost2->m_next; + + delete_entry(ghost1); + delete_entry(ghost2); + + e1->m_next = e2; + e2->m_prev = e1; + + l->m_end = src->m_end; + l->m_size += src->m_size; +} |