Implement libft Part 3 (linked lists) with tests

Add t_list struct and 9 linked list functions: ft_lstnew,
ft_lstadd_front, ft_lstsize, ft_lstlast, ft_lstadd_back,
ft_lstdelone, ft_lstclear, ft_lstiter, ft_lstmap.

1 files changed, 26 insertions, 0 deletions

diff --git a/src/ft_lstmap.c b/src/ft_lstmap.c
new file mode 100644
index 0000000..c001a2d
--- /dev/null
+++ b/src/ft_lstmap.c
@@ -0,0 +1,26 @@
+#include "libft.h"
+#include <stdlib.h>
+
+t_list *
+ft_lstmap (t_list *lst, void *(*f) (void *), void (*del) (void *))
+{
+  t_list *new_list;
+  t_list *node;
+  void *content;
+
+  new_list = NULL;
+  while (lst)
+    {
+      content = f (lst->content);
+      node = ft_lstnew (content);
+      if (!node)
+        {
+          del (content);
+          ft_lstclear (&new_list, del);
+          return (NULL);
+        }
+      ft_lstadd_back (&new_list, node);
+      lst = lst->next;
+    }
+  return (new_list);
+}