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#include "ll.h"
#include <stdlib.h>
#include <error.h>
#include <errno.h>
#include <stdio.h>
// Initialize an empty nodelist object
struct nodelist* nodelist_init(struct nodelist *start) {
if(start == NULL) {
start = calloc(1, sizeof(struct nodelist));
if(start == NULL) {
error(0, errno, "Could not allocate space for empty node list object");
return NULL;
}
}
start->fullpath = NULL;
start->next = NULL;
return start;
}
struct nodelist* nodelist_prepend(struct nodelist *new, struct nodelist *list) {
new->next = list;
return new;
}
struct nodelist* nodelist_append(struct nodelist *list, struct nodelist *append) {
struct nodelist *p = NULL, *prev = NULL;
for(p = list; p != NULL; p = p->next)
prev = p;
// If the pointer p is null, prev will never be set, so just error out
if(prev == NULL)
return NULL;
prev->next = append;
return list;
}
int nodelist_delete(struct nodelist *list) {
struct nodelist *p, *next;
for(p = list; p != NULL; p = next) {
next = p->next;
free(p);
}
return 0;
}
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