fluid_list.c
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上传日期:2020-08-17
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文件大小:5k
- /* GLIB - Library of useful routines for C programming
- * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
- /*
- * Modified by the GLib Team and others 1997-1999. See the AUTHORS
- * file for a list of people on the GLib Team. See the ChangeLog
- * files for a list of changes. These files are distributed with
- * GLib at ftp://ftp.gtk.org/pub/gtk/.
- */
- #include "fluid_list.h"
- fluid_list_t*
- new_fluid_list(void)
- {
- fluid_list_t* list;
- list = (fluid_list_t*) FLUID_MALLOC(sizeof(fluid_list_t));
- list->data = NULL;
- list->next = NULL;
- return list;
- }
- void
- delete_fluid_list(fluid_list_t *list)
- {
- fluid_list_t *next;
- while (list) {
- next = list->next;
- FLUID_FREE(list);
- list = next;
- }
- }
- void
- delete1_fluid_list(fluid_list_t *list)
- {
- if (list) {
- FLUID_FREE(list);
- }
- }
- fluid_list_t*
- fluid_list_append(fluid_list_t *list, void* data)
- {
- fluid_list_t *new_list;
- fluid_list_t *last;
- new_list = new_fluid_list();
- new_list->data = data;
- if (list)
- {
- last = fluid_list_last(list);
- /* g_assert (last != NULL); */
- last->next = new_list;
- return list;
- }
- else
- return new_list;
- }
- fluid_list_t*
- fluid_list_prepend(fluid_list_t *list, void* data)
- {
- fluid_list_t *new_list;
- new_list = new_fluid_list();
- new_list->data = data;
- new_list->next = list;
- return new_list;
- }
- fluid_list_t*
- fluid_list_nth(fluid_list_t *list, int n)
- {
- while ((n-- > 0) && list) {
- list = list->next;
- }
- return list;
- }
- fluid_list_t*
- fluid_list_remove(fluid_list_t *list, void* data)
- {
- fluid_list_t *tmp;
- fluid_list_t *prev;
- prev = NULL;
- tmp = list;
- while (tmp) {
- if (tmp->data == data) {
- if (prev) {
- prev->next = tmp->next;
- }
- if (list == tmp) {
- list = list->next;
- }
- tmp->next = NULL;
- delete_fluid_list(tmp);
- break;
- }
- prev = tmp;
- tmp = tmp->next;
- }
- return list;
- }
- fluid_list_t*
- fluid_list_remove_link(fluid_list_t *list, fluid_list_t *link)
- {
- fluid_list_t *tmp;
- fluid_list_t *prev;
- prev = NULL;
- tmp = list;
- while (tmp) {
- if (tmp == link) {
- if (prev) {
- prev->next = tmp->next;
- }
- if (list == tmp) {
- list = list->next;
- }
- tmp->next = NULL;
- break;
- }
- prev = tmp;
- tmp = tmp->next;
- }
- return list;
- }
- static fluid_list_t*
- fluid_list_sort_merge(fluid_list_t *l1, fluid_list_t *l2, fluid_compare_func_t compare_func)
- {
- fluid_list_t list, *l;
- l = &list;
- while (l1 && l2) {
- if (compare_func(l1->data,l2->data) < 0) {
- l = l->next = l1;
- l1 = l1->next;
- } else {
- l = l->next = l2;
- l2 = l2->next;
- }
- }
- l->next= l1 ? l1 : l2;
- return list.next;
- }
- fluid_list_t*
- fluid_list_sort(fluid_list_t *list, fluid_compare_func_t compare_func)
- {
- fluid_list_t *l1, *l2;
- if (!list) {
- return NULL;
- }
- if (!list->next) {
- return list;
- }
- l1 = list;
- l2 = list->next;
- while ((l2 = l2->next) != NULL) {
- if ((l2 = l2->next) == NULL)
- break;
- l1=l1->next;
- }
- l2 = l1->next;
- l1->next = NULL;
- return fluid_list_sort_merge(fluid_list_sort(list, compare_func),
- fluid_list_sort(l2, compare_func),
- compare_func);
- }
- fluid_list_t*
- fluid_list_last(fluid_list_t *list)
- {
- if (list) {
- while (list->next)
- list = list->next;
- }
- return list;
- }
- int
- fluid_list_size(fluid_list_t *list)
- {
- int n = 0;
- while (list) {
- n++;
- list = list->next;
- }
- return n;
- }
- fluid_list_t* fluid_list_insert_at(fluid_list_t *list, int n, void* data)
- {
- fluid_list_t *new_list;
- fluid_list_t *cur;
- fluid_list_t *prev = NULL;
- new_list = new_fluid_list();
- new_list->data = data;
- cur = list;
- while ((n-- > 0) && cur) {
- prev = cur;
- cur = cur->next;
- }
- new_list->next = cur;
- if (prev) {
- prev->next = new_list;
- return list;
- } else {
- return new_list;
- }
- }
- /* Compare function to sort strings alphabetically,
- * for use with fluid_list_sort(). */
- int
- fluid_list_str_compare_func (void *a, void *b)
- {
- if (a && b) return FLUID_STRCMP ((char *)a, (char *)b);
- if (!a && !b) return 0;
- if (a) return -1;
- return 1;
- }