turns out we need litems in the end

4 files changed, 45 insertions, 32 deletions

diff --git a/c_init.go b/c_init.go
index 06320aa..9c189c1 100644
--- a/c_init.go
+++ b/c_init.go
@@ -104,7 +104,7 @@ func c_recurse_data_dir(dir, root string, opts HardOpts,
 			// item_node.Host = host_node
 			// litems.add_back(&item_node)
 			host_node.Filename = filename
-			host_node.Parent = &dir_node
+			// host_node.Parent = &dir_node
 			dir_node.lhost.add_back(host_node)
 			global_id++
 		}
diff --git a/c_ldirs.go b/c_ldirs.go
index 880c1b7..7188d5b 100644
--- a/c_ldirs.go
+++ b/c_ldirs.go
@@ -68,20 +68,15 @@ type DirsList struct {
 
 // adds a directory node to the list
 func (ldirs *DirsList) add_back(node *DirsNode) {
-	new_node := node
-
-	new_node.ID = global_id
+	node.ID = global_id
 	if ldirs.head == nil {
-		ldirs.head = new_node
+		ldirs.head = node
 		ldirs.last = ldirs.head
 		return
 	}
-	curr := ldirs.last
-	// for curr.next != nil {
-	// 	curr = curr.next
-	// }
-	curr.next = new_node
-	ldirs.last = curr.next
+	last := ldirs.last
+	last.next = node
+	ldirs.last = last.next
 }
 
 // return the list node with the according id
diff --git a/c_lhosts.go b/c_lhosts.go
index c3d2c77..bddc1c0 100644
--- a/c_lhosts.go
+++ b/c_lhosts.go
@@ -74,7 +74,6 @@ type HostNode struct {
 	Dynamic   bool   `yaml:"dynamic"`
 	Note      string `yaml:"note"`
 	Filename  string
-	Parent    *DirsNode
 	next      *HostNode
 }
 
@@ -85,20 +84,15 @@ type HostList struct {
 
 // adds a host node to the list
 func (lhost *HostList) add_back(node *HostNode) {
-	new_node := node
-
-	new_node.ID = global_id
+	node.ID = global_id
 	if lhost.head == nil {
-		lhost.head = new_node
+		lhost.head = node
 		lhost.last = lhost.head
 		return
 	}
-	curr := lhost.last
-	// for curr.next != nil {
-	// 	curr = curr.next
-	// }
-	curr.next = new_node
-	lhost.last = curr.next
+	last := lhost.last
+	last.next = node
+	lhost.last = last.next
 }
 
 func (lhost *HostList) reset_id() {
diff --git a/c_litems.go b/c_litems.go
index a104e6c..7183ea5 100644
--- a/c_litems.go
+++ b/c_litems.go
@@ -55,6 +55,7 @@ type ItemsNode struct {
 	ID   int
 	Dirs *DirsNode
 	Host *HostNode
+	prev *ItemsNode
 	next *ItemsNode
 }
 
@@ -82,19 +83,42 @@ func (litems *ItemsList) is_dir(id int) bool {
 }
 
 func (litems *ItemsList) add_back(node *ItemsNode) {
-	new_node := node
-
 	if litems.head == nil {
-		litems.head = new_node
+		litems.head = node
 		litems.last = litems.head
 		return
 	}
-	curr := litems.last
-	// for curr.next != nil {
-	// 	curr = curr.next
-	// }
-	new_node.ID = curr.ID + 1
-	curr.next = new_node
-	litems.last = curr.next
+	last := litems.last
+	node.ID = last.ID + 1
+	node.prev = last
+	last.next = node
+	litems.last = last.next
+}
+
+func (item *ItemsNode) is_dir() bool {
+	if item.Dirs == nil {
+		return false
+	}
+	return true
 }
 
+func (item *ItemsNode) inc(jump int) *ItemsNode {
+	if jump == 0 {
+		return item
+	} else if jump == 1 {
+		return item.next
+	} else if jump == -1 {
+		return item.prev
+	}
+	new_item := item
+	if jump > 0 {
+		for i := 0; new_item != nil && i < jump; i++ {
+			new_item = new_item.next
+		}
+		return new_item
+	}
+	for i := 0; new_item != nil && i > jump; i-- {
+		new_item = new_item.prev
+	}
+	return new_item
+}