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9be4702a30
function old new delta run_applet_no_and_exit 438 450 +12 ifupdown_main 2147 2149 +2 writeFileToTarball 1325 1326 +1 pidof_main 244 245 +1 last_main 896 897 +1 grep_main 779 780 +1 find_list_entry2 121 122 +1 tar_main 835 833 -2 llist_unlink 28 26 -2 llist_rev 23 21 -2 main 791 782 -9 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 7/4 up/down: 19/-15) Total: 4 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
99 lines
1.9 KiB
C
99 lines
1.9 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* linked list helper functions.
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*
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* Copyright (C) 2003 Glenn McGrath
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* Copyright (C) 2005 Vladimir Oleynik
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* Copyright (C) 2005 Bernhard Reutner-Fischer
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* Copyright (C) 2006 Rob Landley <rob@landley.net>
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*
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* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*/
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#include "libbb.h"
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/* Add data to the start of the linked list. */
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void FAST_FUNC llist_add_to(llist_t **old_head, void *data)
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{
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llist_t *new_head = xmalloc(sizeof(llist_t));
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new_head->data = data;
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new_head->link = *old_head;
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*old_head = new_head;
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}
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/* Add data to the end of the linked list. */
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void FAST_FUNC llist_add_to_end(llist_t **list_head, void *data)
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{
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while (*list_head)
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list_head = &(*list_head)->link;
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*list_head = xzalloc(sizeof(llist_t));
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(*list_head)->data = data;
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/*(*list_head)->link = NULL;*/
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}
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/* Remove first element from the list and return it */
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void* FAST_FUNC llist_pop(llist_t **head)
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{
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void *data = NULL;
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llist_t *temp = *head;
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if (temp) {
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data = temp->data;
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*head = temp->link;
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free(temp);
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}
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return data;
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}
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/* Unlink arbitrary given element from the list */
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void FAST_FUNC llist_unlink(llist_t **head, llist_t *elm)
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{
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if (!elm)
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return;
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while (*head) {
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if (*head == elm) {
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*head = (*head)->link;
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break;
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}
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head = &(*head)->link;
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}
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}
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/* Recursively free all elements in the linked list. If freeit != NULL
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* call it on each datum in the list */
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void FAST_FUNC llist_free(llist_t *elm, void (*freeit)(void *data))
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{
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while (elm) {
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void *data = llist_pop(&elm);
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if (freeit)
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freeit(data);
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}
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}
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/* Reverse list order. */
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llist_t* FAST_FUNC llist_rev(llist_t *list)
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{
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llist_t *rev = NULL;
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while (list) {
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llist_t *next = list->link;
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list->link = rev;
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rev = list;
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list = next;
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}
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return rev;
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}
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llist_t* FAST_FUNC llist_find_str(llist_t *list, const char *str)
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{
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while (list) {
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if (strcmp(list->data, str) == 0)
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break;
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list = list->link;
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}
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return list;
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}
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