Almost make scanning folders work

1 files changed, 53 insertions, 0 deletions

diff --git a/src/ll.c b/src/ll.c
new file mode 100644
index 0000000..1a0426b
--- /dev/null
+++ b/src/ll.c
@@ -0,0 +1,53 @@
+#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;
+    start->type = NODELIST_TYPE__UNDEF;
+    
+    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;
+}
\ No newline at end of file