action to rename the base name of file without changing directory or extension (#1155)

doc/nvim-tree-lua.txt

@@ -1203,8 +1203,10 @@ exists.
     - create
     - remove
     - trash
+    - rename_node `(node: table, modifier?: string vim.fn.fnamemodify argument)`
     - rename
     - rename_sub
+    - rename_basename
     - cut
     - paste
     - clear_clipboard
@@ -1337,6 +1339,7 @@ DEFAULT MAPPINGS                                     *nvim-tree-default-mappings
 `D`               trash               trash a file via |trash| option
 `r`               rename              rename a file
 `<C-r>`           full_rename         rename a file and omit the filename on input
+`e`               rename_basename     rename a file with filename-modifiers ':t:r' without changing extension
 `x`               cut                 add/remove file/directory to cut clipboard
 `c`               copy                add/remove file/directory to copy clipboard
 `p`               paste               paste from clipboard; cut clipboard has precedence over copy; will prompt for confirmation
@@ -1388,6 +1391,7 @@ DEFAULT MAPPINGS                                     *nvim-tree-default-mappings
     { key = "D",                              action = "trash" },
     { key = "r",                              action = "rename" },
     { key = "<C-r>",                          action = "full_rename" },
+    { key = "e",                              action = "rename_basename" },
     { key = "x",                              action = "cut" },
     { key = "c",                              action = "copy" },
     { key = "p",                              action = "paste" },

lua/nvim-tree/actions/dispatch.lua

@@ -22,11 +22,12 @@ local Actions = {
   copy = require("nvim-tree.actions.fs.copy-paste").copy,
   create = require("nvim-tree.actions.fs.create-file").fn,
   cut = require("nvim-tree.actions.fs.copy-paste").cut,
-  full_rename = require("nvim-tree.actions.fs.rename-file").fn(true),
+  full_rename = require("nvim-tree.actions.fs.rename-file").fn ":p",
   paste = require("nvim-tree.actions.fs.copy-paste").paste,
   trash = require("nvim-tree.actions.fs.trash").fn,
   remove = require("nvim-tree.actions.fs.remove-file").fn,
-  rename = require("nvim-tree.actions.fs.rename-file").fn(false),
+  rename = require("nvim-tree.actions.fs.rename-file").fn ":t",
+  rename_basename = require("nvim-tree.actions.fs.rename-file").fn ":t:r",
 
   -- Movements in tree
   close_node = require("nvim-tree.actions.moves.parent").fn(true),

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

@@ -5,6 +5,12 @@ local notify = require "nvim-tree.notify"
 
 local M = {}
 
+local ALLOWED_MODIFIERS = {
+  [":p"] = true,
+  [":t"] = true,
+  [":t:r"] = true,
+}
+
 local function err_fmt(from, to, reason)
   return string.format("Cannot rename %s -> %s: %s", from, to, reason)
 end
@@ -25,25 +31,53 @@ function M.rename(node, to)
   events._dispatch_node_renamed(node.absolute_path, to)
 end
 
-function M.fn(with_sub)
-  return function(node)
+function M.fn(default_modifier)
+  default_modifier = default_modifier or ":t"
+
+  return function(node, modifier)
+    if type(node) ~= "table" then
+      node = lib.get_node_at_cursor()
+    end
+
+    if type(modifier) ~= "string" then
+      modifier = default_modifier
+    end
+
+    -- support for only specific modifiers have been implemented
+    if not ALLOWED_MODIFIERS[modifier] then
+      return notify.warn(
+        "Modifier " .. vim.inspect(modifier) .. " is not in allowed list : " .. table.concat(ALLOWED_MODIFIERS, ",")
+      )
+    end
+
     node = lib.get_last_group_node(node)
     if node.name == ".." then
       return
     end
 
     local namelen = node.name:len()
-    local abs_path = with_sub and node.absolute_path:sub(0, namelen * -1 - 1) or node.absolute_path
+    local directory = node.absolute_path:sub(0, namelen * -1 - 1)
+    local default_path
+    local prepend = ""
+    local append = ""
+    default_path = vim.fn.fnamemodify(node.absolute_path, modifier)
+    if modifier:sub(0, 2) == ":t" then
+      prepend = directory
+    end
+    if modifier == ":t:r" then
+      local extension = vim.fn.fnamemodify(node.name, ":e")
+      append = extension:len() == 0 and "" or "." .. extension
+    end
 
-    local input_opts = { prompt = "Rename to ", default = abs_path, completion = "file" }
+    local input_opts = { prompt = "Rename to ", default = default_path, completion = "file" }
 
     vim.ui.input(input_opts, function(new_file_path)
       utils.clear_prompt()
       if not new_file_path then
         return
       end
 
-      M.rename(node, new_file_path)
+      M.rename(node, prepend .. new_file_path .. append)
       if M.enable_reload then
         require("nvim-tree.actions.reloaders.reloaders").reload_explorer()
       end

lua/nvim-tree/actions/init.lua

@@ -131,6 +131,11 @@ local DEFAULT_MAPPINGS = {
     action = "full_rename",
     desc = "rename a file and omit the filename on input",
   },
+  {
+    key = "e",
+    action = "rename_basename",
+    desc = "rename a file with filename-modifiers ':t:r' without changing extension",
+  },
   {
     key = "x",
     action = "cut",

lua/nvim-tree/api.lua

@@ -9,9 +9,9 @@ local Api = {
 }
 
 local function inject_node(f)
-  return function(node)
+  return function(node, ...)
     node = node or require("nvim-tree.lib").get_node_at_cursor()
-    f(node)
+    f(node, ...)
   end
 end
 
@@ -47,8 +47,10 @@ Api.tree.toggle_help = require("nvim-tree.actions.tree-modifiers.toggles").help
 Api.fs.create = inject_node(require("nvim-tree.actions.fs.create-file").fn)
 Api.fs.remove = inject_node(require("nvim-tree.actions.fs.remove-file").fn)
 Api.fs.trash = inject_node(require("nvim-tree.actions.fs.trash").fn)
-Api.fs.rename = inject_node(require("nvim-tree.actions.fs.rename-file").fn(false))
-Api.fs.rename_sub = inject_node(require("nvim-tree.actions.fs.rename-file").fn(true))
+Api.fs.rename_node = inject_node(require("nvim-tree.actions.fs.rename-file").fn ":t")
+Api.fs.rename = inject_node(require("nvim-tree.actions.fs.rename-file").fn ":t")
+Api.fs.rename_sub = inject_node(require("nvim-tree.actions.fs.rename-file").fn ":p")
+Api.fs.rename_basename = inject_node(require("nvim-tree.actions.fs.rename-file").fn ":t:r")
 Api.fs.cut = inject_node(require("nvim-tree.actions.fs.copy-paste").cut)
 Api.fs.paste = inject_node(require("nvim-tree.actions.fs.copy-paste").paste)
 Api.fs.clear_clipboard = require("nvim-tree.actions.fs.copy-paste").clear_clipboard