feat(nvim-tree#2630): file renames can now create directories (nvim-tree#2657)

* Added creating of directories when renaming files

* Style check error? fixed

* Forgot, I added back the line of code that creates a directory named as the file and forgot to remove it

* Added a check for file already exists and also switched the is_error values as they were mismatched

* I don't know how but this somehow fixed the creation of a directory?

Author: mohamedarish

lua/nvim-tree/actions/fs/rename-file.lua

@@ -9,6 +9,16 @@ local M = {
   config = {},
 }
 
+---@param iter function iterable
+---@return integer
+local function get_num_nodes(iter)
+  local i = 0
+  for _ in iter do
+    i = i + 1
+  end
+  return i
+end
+
 local ALLOWED_MODIFIERS = {
   [":p"] = true,
   [":p:h"] = true,
@@ -31,15 +41,46 @@ function M.rename(node, to)
     return
   end
 
-  events._dispatch_will_rename_node(node.absolute_path, to)
-  local success, err = vim.loop.fs_rename(node.absolute_path, to)
-  if not success then
-    notify.warn(err_fmt(notify_from, notify_to, err))
-    return
+  -- create a folder for each path element if the folder does not exist
+  local idx = 0
+  local path_to_create = ""
+
+  local num_nodes = get_num_nodes(utils.path_split(utils.path_remove_trailing(to)))
+  local is_error = false
+  for path in utils.path_split(to) do
+    idx = idx + 1
+
+    local p = utils.path_remove_trailing(path)
+    if #path_to_create == 0 and vim.fn.has "win32" == 1 then
+      path_to_create = utils.path_join { p, path_to_create }
+    else
+      path_to_create = utils.path_join { path_to_create, p }
+    end
+
+    if idx == num_nodes then
+      events._dispatch_will_rename_node(node.absolute_path, to)
+      local success, err = vim.loop.fs_rename(node.absolute_path, to)
+
+      if not success then
+        notify.warn(err_fmt(notify_from, notify_to, err))
+        return
+      end
+    elseif not utils.file_exists(path_to_create) then
+      local success = vim.loop.fs_mkdir(path_to_create, 493)
+      if not success then
+        notify.error("Could not create folder " .. notify.render_path(path_to_create))
+        is_error = true
+        break
+      end
+      is_error = false
+    end
+  end
+
+  if not is_error then
+    notify.info(string.format("%s -> %s", notify_from, notify_to))
+    utils.rename_loaded_buffers(node.absolute_path, to)
+    events._dispatch_node_renamed(node.absolute_path, to)
   end
-  notify.info(string.format("%s -> %s", notify_from, notify_to))
-  utils.rename_loaded_buffers(node.absolute_path, to)
-  events._dispatch_node_renamed(node.absolute_path, to)
 end
 
 ---@param default_modifier string|nil