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Fixing our linked list methods.

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This commit is contained in:
Jacob Windle 2020-01-09 09:37:24 -05:00
parent cdc3a90605
commit 7d57550c06
2 changed files with 15 additions and 10 deletions
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19
linkedlist.c
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@ -3,6 +3,7 @@
// //
#include <stdio.h> #include <stdio.h>
#include <string.h>
#include "linkedlist.h" #include "linkedlist.h"
LinkedList *linkedlist_new() { LinkedList *linkedlist_new() {
@ -12,6 +13,12 @@ LinkedList *linkedlist_new() {
return tmp; return tmp;
} }
static LinkedList *_linkedlist_new_with_data(char *data) {
LinkedList *tmp = linkedlist_new();
tmp->data = strdup(data);
return tmp;
}
/** /**
* Add a char * to our linked list and set up a new head. * Add a char * to our linked list and set up a new head.
* @param head The first node in the list. * @param head The first node in the list.
@ -21,22 +28,20 @@ void linkedlist_add(LinkedList **head, char *data) {
// Create a pointer to the head element. // Create a pointer to the head element.
LinkedList *tmp = *head; LinkedList *tmp = *head;
if (tmp->data == NULL) { if (tmp == NULL) {
tmp->data = data; *head = _linkedlist_new_with_data(data);
} }
else { else {
fprintf(stderr, "Adding to the body\n");
// Iterate until we don't have a next node. // Iterate until we don't have a next node.
while ((tmp = tmp->next) != NULL) ; while (tmp->next != NULL)
tmp = tmp->next;
tmp->next = linkedlist_new(); tmp->next = _linkedlist_new_with_data(data);
tmp->next->data = data;
tmp->next->next = NULL; tmp->next->next = NULL;
} }
} }
void linkedlist_print(LinkedList *head) { void linkedlist_print(LinkedList *head) {
fprintf(stderr, "Entering linked list print\n");
LinkedList *tmp = head; LinkedList *tmp = head;
while (tmp != NULL) { while (tmp != NULL) {
fprintf(stderr, "Node: %s\n", tmp->data); fprintf(stderr, "Node: %s\n", tmp->data);

6
main.c
View File

@ -102,7 +102,7 @@ void showHosts()
int read_config_file() { int read_config_file() {
// increment the refcount for tmp. // increment the refcount for tmp.
linkedlist_add(hosts, "hello.com"); linkedlist_add(&hosts, "hello.com");
} }
/** /**
@ -140,8 +140,8 @@ void daemonize() {
int main(int argc, char **argv) int main(int argc, char **argv)
{ {
// Install a sigint handler to help us clean up. // Install a sigint handler to help us clean up.
linkedlist_add(hosts, "hello.com"); linkedlist_add(&hosts, "hello.com");
linkedlist_add(hosts, "heloworld.com"); linkedlist_add(&hosts, "heloworld.com");
linkedlist_print(hosts); linkedlist_print(hosts);
signal(SIGINT, int_handler); signal(SIGINT, int_handler);
if (getuid() != 0) if (getuid() != 0)