diff --git a/libft/includes/btree.h b/libft/includes/btree.h
new file mode 100644
index 00000000..ab5b587e
--- /dev/null
+++ b/libft/includes/btree.h
@@ -0,0 +1,30 @@
+#ifndef BTREE_H
+# define BTREE_H
+
+#include "libft.h"
+
+typedef struct s_btree		t_btree;
+
+struct	s_btree
+{
+	struct s_btree	*left;
+	struct s_btree	*right;
+	void			*item;
+};
+
+t_btree	*btree_create_node(void *item);
+
+void	btree_insert_data(
+		t_btree **root,
+		void *item,
+		int (*cmpf)(void *, void *));
+
+void	*btree_search_item(t_btree *root,
+		void *data_ref, int (*cmpf)(void *, void *));
+
+int		btree_level_count(t_btree *root);
+void	btree_apply_prefix(t_btree *root, void (*applyf)(void *));
+void	btree_apply_infix(t_btree *root, void (*applyf)(void *));
+void	btree_apply_suffix(t_btree *root, void (*applyf)(void *));
+
+#endif
diff --git a/libft/includes/dlst.h b/libft/includes/dlst.h
index ffcf518f..42d73729 100644
--- a/libft/includes/dlst.h
+++ b/libft/includes/dlst.h
@@ -23,12 +23,13 @@ struct	s_dlist
 
 typedef struct s_dlist	t_dlist;
 
-void	ft_dlst_add_after(t_dlist **alst, t_dlist *new);
-void	ft_dlst_add_before(t_dlist **alst, t_dlist *new);
-void	ft_dlst_delone(t_dlist **alst, void (*del)(void *, size_t));
-int		ft_dlst_size(t_dlist *list);
-t_dlist	*ft_dlst_new(void const *content, size_t content_size);
-t_dlist	*ft_dlst_last(t_dlist *list);
+void	ft_dlstadd_after(t_dlist **alst, t_dlist *new);
+void	ft_dlstadd_before(t_dlist **alst, t_dlist *new);
+void	ft_dlstdel(t_dlist **alst, void (*del)(void *, size_t));
+void	ft_dlstdelone(t_dlist **alst, void (*del)(void *, size_t));
+int		ft_dlstsize(t_dlist *list);
+t_dlist	*ft_dlstnew(void const *content, size_t content_size);
+t_dlist	*ft_dlstlast(t_dlist *list);
 char	*ft_dlsttostr(t_dlist *list);
 
 #endif
diff --git a/libft/includes/libft.h b/libft/includes/libft.h
index 311a94f2..39f21ec7 100644
--- a/libft/includes/libft.h
+++ b/libft/includes/libft.h
@@ -16,6 +16,7 @@
 # include "ft_xattr.h"
 # include "lst.h"
 # include "dlst.h"
+# include "btree.h"
 
 # include <string.h>
 # include <unistd.h>
@@ -129,5 +130,5 @@ int		ft_printf(const char *format, ...);
 
 char	*ft_getenv(char **env, char *key);
 
-void	*ft_realloc(void *data, int size)
+void	*ft_realloc(void *data, int size);
 #endif
diff --git a/libft/src/btree/btree_apply_by_level.c b/libft/src/btree/btree_apply_by_level.c
new file mode 100644
index 00000000..0cb2c4bd
--- /dev/null
+++ b/libft/src/btree/btree_apply_by_level.c
@@ -0,0 +1,46 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   btree_apply_by_level.c                             :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2016/08/19 12:06:15 by jhalford          #+#    #+#             */
+/*   Updated: 2016/08/23 17:49:17 by jhalford         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "btree.h"
+
+int	g_level = 0;
+
+static void	btree_apply_to_level(
+			t_btree *root,
+			int level,
+			int is_first_elem,
+			void (*applyf)(void *item, int current_level, int is_first_elem))
+{
+	if (level == g_level)
+	{
+		(*applyf)(root->item, level, is_first_elem);
+		return ;
+	}
+	if (root->left)
+		btree_apply_to_level(root->left, level + 1, is_first_elem, applyf);
+	if (root->right)
+		btree_apply_to_level(root->right, level + 1, 0, applyf);
+}
+
+void	btree_apply_by_level(
+		t_btree *root,
+		void (*applyf)(void *item, int current_level, int is_first_elem))
+{
+	int		height;
+
+	height = btree_level_count(root);
+	while (g_level < height)
+	{
+		btree_apply_to_level(root, 0, 1, applyf);
+		g_level++;
+	}
+}
diff --git a/libft/src/btree/btree_apply_infix.c b/libft/src/btree/btree_apply_infix.c
new file mode 100644
index 00000000..65d2b5d6
--- /dev/null
+++ b/libft/src/btree/btree_apply_infix.c
@@ -0,0 +1,23 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   btree_create_node.c                                :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2016/08/16 13:43:51 by jhalford          #+#    #+#             */
+/*   Updated: 2016/08/18 21:10:05 by jhalford         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "btree.h"
+
+void	btree_apply_infix(t_btree *root, void (*applyf)(void *))
+{
+	if (root->left)
+		btree_apply_infix(root->left, applyf);
+	(*applyf)(root->item);
+	if (root->right)
+		btree_apply_infix(root->right, applyf);
+	return ;
+}
diff --git a/libft/src/btree/btree_apply_prefix.c b/libft/src/btree/btree_apply_prefix.c
new file mode 100644
index 00000000..e7e4332c
--- /dev/null
+++ b/libft/src/btree/btree_apply_prefix.c
@@ -0,0 +1,22 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   btree_create_node.c                                :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2016/08/16 13:43:51 by jhalford          #+#    #+#             */
+/*   Updated: 2016/08/18 21:06:44 by jhalford         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "btree.h"
+
+void	btree_apply_prefix(t_btree *root, void (*applyf)(void *))
+{
+	(*applyf)(root->item);
+	if (root->left)
+		btree_apply_prefix(root->left, applyf);
+	if (root->right)
+		btree_apply_prefix(root->right, applyf);
+}
diff --git a/libft/src/btree/btree_apply_suffix.c b/libft/src/btree/btree_apply_suffix.c
new file mode 100644
index 00000000..9cf8b4ea
--- /dev/null
+++ b/libft/src/btree/btree_apply_suffix.c
@@ -0,0 +1,23 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   btree_create_node.c                                :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2016/08/16 13:43:51 by jhalford          #+#    #+#             */
+/*   Updated: 2016/08/18 21:11:19 by jhalford         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "btree.h"
+
+void	btree_apply_suffix(t_btree *root, void (*applyf)(void *))
+{
+	if (root->left)
+		btree_apply_suffix(root->left, applyf);
+	if (root->right)
+		btree_apply_suffix(root->right, applyf);
+	(*applyf)(root->item);
+	return ;
+}
diff --git a/libft/src/btree/btree_create_node.c b/libft/src/btree/btree_create_node.c
new file mode 100644
index 00000000..b50c4be4
--- /dev/null
+++ b/libft/src/btree/btree_create_node.c
@@ -0,0 +1,24 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   btree_create_node.c                                :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2016/08/16 13:43:51 by jhalford          #+#    #+#             */
+/*   Updated: 2016/08/19 23:32:10 by jhalford         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "btree.h"
+
+t_btree	*btree_create_node(void *item)
+{
+	t_btree	*node;
+
+	node = (t_btree *)malloc(sizeof(t_btree));
+	node->left = 0;
+	node->right = 0;
+	node->item = item;
+	return (node);
+}
diff --git a/libft/src/btree/btree_insert_data.c b/libft/src/btree/btree_insert_data.c
new file mode 100644
index 00000000..1c88672e
--- /dev/null
+++ b/libft/src/btree/btree_insert_data.c
@@ -0,0 +1,42 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   btree_create_node.c                                :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2016/08/16 13:43:51 by jhalford          #+#    #+#             */
+/*   Updated: 2016/08/19 14:12:59 by jhalford         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "btree.h"
+
+void	btree_insert_data(
+		t_btree **root,
+		void *item,
+		int (*cmpf)(void *, void *))
+{
+	t_btree	*node;
+
+	if (!*root)
+	{
+		*root = btree_create_node(item);
+		return ;
+	}
+	node = *root;
+	if ((*cmpf)(item, node->item) < 0)
+	{
+		if (node->left)
+			btree_insert_data(&node->left, item, cmpf);
+		else
+			node->left = btree_create_node(item);
+	}
+	else
+	{
+		if (node->right)
+			btree_insert_data(&node->right, item, cmpf);
+		else
+			node->right = btree_create_node(item);
+	}
+}
diff --git a/libft/src/btree/btree_level_count.c b/libft/src/btree/btree_level_count.c
new file mode 100644
index 00000000..41248654
--- /dev/null
+++ b/libft/src/btree/btree_level_count.c
@@ -0,0 +1,21 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   btree_create_node.c                                :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2016/08/16 13:43:51 by jhalford          #+#    #+#             */
+/*   Updated: 2016/08/25 17:46:00 by jhalford         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "btree.h"
+
+int	btree_level_count(t_btree *root)
+{
+	return (root
+			? 1 + FT_MAX(btree_level_count(root->left),
+				btree_level_count(root->right))
+			: 0);
+}
diff --git a/libft/src/btree/btree_search_item.c b/libft/src/btree/btree_search_item.c
new file mode 100644
index 00000000..a7a1eb68
--- /dev/null
+++ b/libft/src/btree/btree_search_item.c
@@ -0,0 +1,30 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   btree_create_node.c                                :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2016/08/16 13:43:51 by jhalford          #+#    #+#             */
+/*   Updated: 2016/08/23 19:04:56 by jhalford         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "btree.h"
+
+void	*btree_search_item(t_btree *root,
+		void *data_ref, int (*cmpf)(void *, void *))
+{
+	void *out;
+
+	out = NULL;
+	if (root)
+	{
+		out = btree_search_item(root->left, data_ref, cmpf);
+		if (!out && ((*cmpf)(root->item, data_ref) == 0))
+			out = root->item;
+		if (!out)
+			out = btree_search_item(root->right, data_ref, cmpf);
+	}
+	return (out);
+}
diff --git a/libft/src/dlst/ft_dlst_add_after.c b/libft/src/dlst/ft_dlstadd_after.c
similarity index 95%
rename from libft/src/dlst/ft_dlst_add_after.c
rename to libft/src/dlst/ft_dlstadd_after.c
index c1fa36eb..caec607d 100644
--- a/libft/src/dlst/ft_dlst_add_after.c
+++ b/libft/src/dlst/ft_dlstadd_after.c
@@ -12,7 +12,7 @@
 
 #include "libft.h"
 
-void	ft_dlst_add_after(t_dlist **alst, t_dlist *new)
+void	ft_dlstadd_after(t_dlist **alst, t_dlist *new)
 {
 	if (new)
 	{
diff --git a/libft/src/dlst/ft_dlst_add_before.c b/libft/src/dlst/ft_dlstadd_before.c
similarity index 95%
rename from libft/src/dlst/ft_dlst_add_before.c
rename to libft/src/dlst/ft_dlstadd_before.c
index 5025986c..e2d6b2e8 100644
--- a/libft/src/dlst/ft_dlst_add_before.c
+++ b/libft/src/dlst/ft_dlstadd_before.c
@@ -12,7 +12,7 @@
 
 #include "libft.h"
 
-void	ft_dlst_add_before(t_dlist **alst, t_dlist *new)
+void	ft_dlstadd_before(t_dlist **alst, t_dlist *new)
 {
 	if (new)
 	{
diff --git a/libft/src/dlst/ft_dlstdel.c b/libft/src/dlst/ft_dlstdel.c
new file mode 100644
index 00000000..43131fb7
--- /dev/null
+++ b/libft/src/dlst/ft_dlstdel.c
@@ -0,0 +1,11 @@
+#include "libft.h"
+
+void	ft_dlstdel(t_dlist **alst, void (*del)(void *, size_t))
+{
+	if (alst && *alst)
+	{
+		ft_dlstdel(&(*alst)->next, del);
+		ft_dlstdel(&(*alst)->prev, del);
+	}
+	ft_dlstdelone(alst, del);
+}
diff --git a/libft/src/dlst/ft_dlst_delone.c b/libft/src/dlst/ft_dlstdelone.c
similarity index 94%
rename from libft/src/dlst/ft_dlst_delone.c
rename to libft/src/dlst/ft_dlstdelone.c
index ff83b296..a83bf62e 100644
--- a/libft/src/dlst/ft_dlst_delone.c
+++ b/libft/src/dlst/ft_dlstdelone.c
@@ -12,7 +12,7 @@
 
 #include "libft.h"
 
-void	ft_dlst_delone(t_dlist **alst, void (*del)(void *, size_t))
+void	ft_dlstdelone(t_dlist **alst, void (*del)(void *, size_t))
 {
 	t_dlist	*tmp;
 
diff --git a/libft/src/dlst/ft_dlst_last.c b/libft/src/dlst/ft_dlstlast.c
similarity index 96%
rename from libft/src/dlst/ft_dlst_last.c
rename to libft/src/dlst/ft_dlstlast.c
index 9772cc0c..1286c32c 100644
--- a/libft/src/dlst/ft_dlst_last.c
+++ b/libft/src/dlst/ft_dlstlast.c
@@ -12,7 +12,7 @@
 
 #include "libft.h"
 
-t_dlist	*ft_dlst_last(t_dlist *list)
+t_dlist	*ft_dlstlast(t_dlist *list)
 {
 	while (list && list->next)
 		list = list->next;
diff --git a/libft/src/dlst/ft_dlst_new.c b/libft/src/dlst/ft_dlstnew.c
similarity index 95%
rename from libft/src/dlst/ft_dlst_new.c
rename to libft/src/dlst/ft_dlstnew.c
index 8725382f..dfe32bdc 100644
--- a/libft/src/dlst/ft_dlst_new.c
+++ b/libft/src/dlst/ft_dlstnew.c
@@ -12,7 +12,7 @@
 
 #include "libft.h"
 
-t_dlist	*ft_dlst_new(void const *content, size_t content_size)
+t_dlist	*ft_dlstnew(void const *content, size_t content_size)
 {
 	t_dlist	*new;
 
diff --git a/libft/src/dlst/ft_dlst_size.c b/libft/src/dlst/ft_dlstsize.c
similarity index 97%
rename from libft/src/dlst/ft_dlst_size.c
rename to libft/src/dlst/ft_dlstsize.c
index 9777bb11..b536efa2 100644
--- a/libft/src/dlst/ft_dlst_size.c
+++ b/libft/src/dlst/ft_dlstsize.c
@@ -12,7 +12,7 @@
 
 #include "libft.h"
 
-int		ft_dlst_size(t_dlist *list)
+int		ft_dlstsize(t_dlist *list)
 {
 	int		size;
 	t_dlist	*tmp;
diff --git a/libft/src/get_next_line/get_next_line.c b/libft/src/get_next_line/get_next_line.c
index 3263c520..cc8d1cdf 100644
--- a/libft/src/get_next_line/get_next_line.c
+++ b/libft/src/get_next_line/get_next_line.c
@@ -13,7 +13,7 @@
 #include "libft.h"
 #define BUFF_SIZE 32
 
-static char		*ft_realloc(char *line, int size)
+static char		*ft_strrealloc(char *line, int size)
 {
 	char	*str;
 
@@ -41,7 +41,7 @@ static int		ft_loop_read(int fd, char **line, char (*save)[])
 			ft_strcat(*line, buf);
 			return (1);
 		}
-		if ((*line = ft_realloc(*line, ret)) == NULL)
+		if ((*line = ft_strrealloc(*line, ret)) == NULL)
 			return (-1);
 		ft_strcat(*line, buf);
 	}
diff --git a/libft/src/mem/ft_realloc.c b/libft/src/mem/ft_realloc.c
index 33f6c10c..f64a50d0 100644
--- a/libft/src/mem/ft_realloc.c
+++ b/libft/src/mem/ft_realloc.c
@@ -16,8 +16,10 @@ void	*ft_realloc(void *data, int size)
 {
 	void	*new;
 
+	ft_printf("realloc befor: '%s'\n", data);
 	new = ft_memalloc(size);
-	ft_memcpy(new, data, size);
+	ft_memcpy(new, data, ft_strlen(data));
 	ft_memdel(&data);
+	ft_printf("realloc after: '%s'\n", new);
 	return (new);
 }
diff --git a/libft/src/path/ft_path_findfile.c b/libft/src/path/ft_path_findfile.c
new file mode 100644
index 00000000..e69de29b