Files
KickestEnd.nvim/lua/buffer_deleted.lua

95 lines
2.7 KiB
Lua

-- When a file is deleted externally, rename all its buffers to "[file]: file removed"
local M = {}
-- List of buffer names or filetypes to skip (UndoTree, Neo-tree, etc.)
local skip_buffers = { 'undotree', 'neo-tree' }
-- Helper function to determine if a buffer should be skipped in future
local function should_skip(buf)
if not vim.api.nvim_buf_is_valid(buf) then
return true
end
local bufname = vim.api.nvim_buf_get_name(buf)
local ft = vim.api.nvim_buf_get_option(buf, 'filetype')
local listed = vim.api.nvim_buf_get_option(buf, 'buflisted')
local modifiable = vim.api.nvim_buf_get_option(buf, 'modifiable')
-- Skip empty, unlisted, or unmodifiable buffers (usually floating windows)
if bufname == '' or not listed or not modifiable then
return true
end
-- Skip directories if spefified with the nvim command
local stat = vim.loop.fs_stat(bufname)
if stat and stat.type == 'directory' then
return true
end
-- Skip known plugin filetypes
for _, v in ipairs(skip_buffers) do
if ft == v or bufname:match(v) then
return true
end
end
return false
end
-- Detect deleted files and rename their buffers
local function rename_deleted_buffers()
for _, buf in ipairs(vim.api.nvim_list_bufs()) do
if vim.api.nvim_buf_is_valid(buf) and not should_skip(buf) then
local bufname = vim.api.nvim_buf_get_name(buf)
if bufname ~= '' and vim.fn.filereadable(bufname) == 0 then
-- Skip buffers for files that have never been written (new files)
local ftime = vim.fn.getftime(bufname)
local modified = vim.api.nvim_buf_get_option(buf, 'modified')
if ftime == -1 and not modified then
goto continue
end
local filename = vim.fn.fnamemodify(bufname, ':t')
local new_name = string.format('[%s]: file removed', filename)
-- Skip if already renamed
if not vim.api.nvim_buf_get_name(buf):match 'file removed' then
-- Ensure no other buffer already has this name
local exists = false
for _, b in ipairs(vim.api.nvim_list_bufs()) do
if vim.api.nvim_buf_is_valid(b) and vim.api.nvim_buf_get_name(b) == new_name then
exists = true
break
end
end
if not exists then
-- Temporarily unlist so renaming works cleanly
vim.api.nvim_buf_set_option(buf, 'buflisted', false)
vim.api.nvim_buf_set_name(buf, new_name)
vim.api.nvim_buf_set_option(buf, 'buflisted', true)
end
end
end
end
::continue::
end
end
-- Trigger both on focus and buffer entry
vim.api.nvim_create_autocmd({ 'FocusGained', 'BufEnter' }, {
callback = function()
local buf = vim.api.nvim_get_current_buf()
if should_skip(buf) then
return
end
-- Force Neovim to check external changes
vim.cmd 'checktime'
rename_deleted_buffers()
end,
})
return M