initial release

src/list.c

@@ -0,0 +1,88 @@
+/*
+ * list.c, SJ
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include "list.h"
+#include "config.h"
+
+
+int append_list(struct url **urls, char *p){
+   struct url *q, *t, *u=NULL;
+
+   q = *urls;
+
+   while(q){
+      if(strcmp(q->url_str, p) == 0)
+         return 0;
+
+      u = q;
+      q = q->r;
+   }
+
+   t = createListItem(p);
+   if(t){
+      if(*urls == NULL)
+         *urls = t;
+      else if(u)
+         u->r = t;
+
+      return 1;
+   }
+
+   return -1;
+}
+
+
+struct url *createListItem(char *s){
+   struct url *h=NULL;
+
+   if((h = malloc(sizeof(struct url))) == NULL)
+      return NULL;
+
+   strncpy(h->url_str, s, URL_LEN-1);
+   h->r = NULL;
+
+   return h;
+}
+
+
+int isOnList(struct url *u, char *item){
+   struct url *p, *q;
+
+   p = u;
+
+   while(p != NULL){
+      q = p->r;
+
+      if(p){
+         if(strcmp(p->url_str, item) == 0) return 1;
+      }
+
+      p = q;
+   }
+
+   return 0;
+}
+
+
+void freeList(struct url *u){
+   struct url *p, *q;
+
+   p = u;
+
+   while(p != NULL){
+      q = p->r;
+
+      if(p)
+         free(p);
+
+      p = q;
+   }
+}
+
+
+