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This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.

8
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clean:
nvim --headless --clean -n -c "lua vim.fn.delete('./tests/.deps', 'rf')" +q
test:
nvim --headless --clean -u tests/test.lua "$(FILE)"
check:
stylua --check lua/ tests/
format:
stylua lua/ tests/

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# `PPD.nvim`
An implementation of shell `pushd` & `popd` commands for Neovim versions `0.10.0+`.
## Installation/Setup
- [lazy.nvim](https://github.com/folke/lazy.nvim):
```lua
{
"PriceHiller/ppd.nvim",
config = true
}
```
or
```lua
{
"PriceHiller/ppd.nvim",
config = function()
require("ppd").setup({})
end
}
```
## Configuration
The default configuration is provided below:
```lua
require("ppd").setup({
-- Automatically push paths from DirChanged events onto the stack
auto_cd = true,
dedup = {
-- Do not push a path that is the same as the newest path on the stack
top = true,
-- Do not push any duplicates onto the stack
all = false,
},
notify = {
-- Display the stack on all pushd invocations
on_pushd = true,
-- Display the stack on all popd invocations
on_popd = true,
},
})
```
## Usage
`PPD.nvim` provides a few user commands relating to different scopes, read `:h current-directory`. For most users using
only the globally scoped commands is recommended.
| Scope | Push Directory Command | Pop Directory Command |
| ------ | ---------------------- | --------------------- |
| Global | `Pushd` | `Popd` |
| Tab | `TPushd` | `TPopd` |
| Window | `LPushd` | `LPopd` |
The push directory commands push a given path onto the stack and the pop directory commands pop the latest path off the
stack. Both commands will change your current directory for their given scopes.
Invoking any push directory command (e.g. `Pushd`) without an argument will display the current paths on the stack.
All pop directory commands (e.g. `LPopd`) support receiving a number of times to pop items off the stack.

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local config = require("ppd.config")
local dirstack = require("ppd.dirstack")
local M = {}
local stacks = {}
M.stacks = function()
return stacks
end
M.reset_stacks = function()
stacks = {
global = dirstack.new("global"),
tab = dirstack.new("tab"),
window = dirstack.new("window"),
}
end
local user_cmds_created = false
M.create_user_commands = function()
if user_cmds_created then
return
end
---@param scope string
---@param cmds string[]
local function create_user_cmd(scope, cmds)
local desc_scope = (scope:gsub("^%l", string.upper))
vim.api.nvim_create_user_command(cmds[1], function(o)
local stack = stacks[scope]
stack:pushd(vim.trim(o.args))
end, {
nargs = "?",
desc = ("%s Pushd"):format(desc_scope),
complete = "dir",
})
vim.api.nvim_create_user_command(cmds[2], function(o)
local stack = stacks[scope]
stack:popd(tonumber(o.args))
end, {
nargs = "?",
desc = ("%s Popd"):format(desc_scope),
})
end
vim.iter({
global = { "Pushd", "Popd" },
tab = { "TPushd", "TPopd" },
window = { "LPushd", "LPopd" },
}):each(create_user_cmd)
user_cmds_created = true
end
--- Set up the plugin config
---@param user_config ppd.Config?
M.setup = function(user_config)
config:update(user_config or {})
M.create_user_commands()
M.reset_stacks()
end
M.Config = config
return M

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---@class ppd.Config.dedup
---@field top boolean Do not push duplicate directory onto the stack if the top element in the stack if the same
---@field all boolean Do not push any duplicate directories onto the stack if it already exists within the stack
---@class ppd.Config.notify
---@field on_pushd boolean Notify on every pushd call
---@field on_popd boolean Notify on every popd call
---@class ppd.Config
---@field dedup ppd.Config.dedup
---@field auto_cd boolean Automatically push elements onto the stack on DirChanged events
---@field notify ppd.Config.notify
local Config = {
auto_cd = true,
dedup = {
top = true,
all = false,
},
notify = {
on_pushd = true,
on_popd = true,
},
}
local default_config = vim.deepcopy(Config)
---Update ppd's configuration with new options
---@param config ppd.Config
function Config:update(config)
Config = vim.tbl_deep_extend("force", self, config)
end
function Config:reset()
self:update(self:get_defaults())
end
function Config:get_defaults()
return default_config
end
return Config

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local config = require("ppd.config")
---@alias ppd.Dirstack.scope "global" | "tab" | "window"
---@class ppd.DirStack
---@field scope ppd.Dirstack.scope
---@field autocmd integer?
---@field watch_cd_enabled boolean
---@field augroup integer
---@field stack string[]
local DirStack = {}
--- Create a new Dirstack
---@param scope ppd.Dirstack.scope
---@return ppd.DirStack
function DirStack.new(scope)
local valid_scopes = {
"global",
"tab",
"window",
}
vim.validate {
scope = {
scope,
function(sc)
return vim.tbl_contains(valid_scopes, sc)
end,
"a valid DirStack scope",
},
}
local self = setmetatable({
scope = scope,
stack = {},
augroup = vim.api.nvim_create_augroup("Ppd" .. scope:upper(), { clear = false }),
}, { __index = DirStack })
-- Put at minimum, a single directory on the stack by default so it's possible to unwind to the
if scope == "global" then
self:push(vim.fn.getcwd(-1, -1))
elseif scope == "tab" then
self:push(vim.fn.getcwd(-1, 0))
else
self:push(vim.fn.getcwd(0))
end
-- Start the watch *after* we have a single base directory on the path
self:watch_cd()
return self
end
--- Creates an autocmd if not already called to watch cd events for the
--- relevant scope and push the directories onto the stack if `auto_cd` is
--- enabled
function DirStack:watch_cd()
self.watch_cd_enabled = true
if self.autocmd then
return
end
self.autocmd = vim.api.nvim_create_autocmd("DirChanged", {
group = self.augroup,
desc = "Ppd " .. self.scope .. " Listener for Auto CD",
pattern = self.scope,
callback = function(args)
if config.auto_cd and self.watch_cd_enabled then
local new_dir = args.file
self:push(new_dir)
end
end,
})
end
function DirStack:unwatch_cd()
self.watch_cd_enabled = false
end
--- Get the string representation of the stack
---@return string
function DirStack:repr()
return table.concat(self.stack, " ")
end
--- Removes one or more directories off the stack and returns them
---@private
---@param count integer? The number of directories to pop or nil for one
---@return string[] removed_paths The paths removed in order from the stack
function DirStack:pop(count)
count = count or 1
local removed_paths = {}
while not self:empty() and count > 0 do
count = count - 1
table.insert(removed_paths, table.remove(self.stack))
end
return removed_paths
end
--- Get whether the stack is empty, empty being defined as only one element
---@return boolean is_empty true if the stack is empty
function DirStack:empty()
return #self.stack == 1
end
--- Push a path onto the stack
---@private
---@param path string
function DirStack:push(path)
path = vim.fn.fnamemodify(vim.fn.fnamemodify(path, ":p:h"), ":~")
if not ((config.dedup.all and self:check_dup_all(path)) or (config.dedup.top and self:check_dup_top(path))) then
table.insert(self.stack, path)
end
end
--- Peek the top of the stack
---@return string? top_path The path at the top of the stack if it exists
function DirStack:peek()
return self.stack[#self.stack]
end
--- Changes directory accounting for the current scope
---@private
---@param path string A path to change the directory to
function DirStack:cd(path)
local cmd = ({
["global"] = vim.cmd.cd,
["tab"] = vim.cmd.tcd,
["window"] = vim.cmd.lcd,
})[self.scope]
self:unwatch_cd()
cmd(path)
self:watch_cd()
end
--- Checks if the topmost element in the stack is the same as the given path
---@param path string
---@return boolean dup_found true if the topmost element is the same as the given path
function DirStack:check_dup_top(path)
return self:peek() == path
end
--- Checks if any element within the current stack is the same as the given path
---@param path string
---@return boolean dup_found true if a duplicate value is located in the stack
function DirStack:check_dup_all(path)
return vim.iter(self.stack):any(function(val)
return val == path
end)
end
--- Change the current directory for the relevant scope to the given path and push it onto the stack
---@param path string
function DirStack:pushd(path)
if not path or path:len() == 0 then
vim.notify(self:repr())
return
end
self:cd(path)
self:push(path)
if config.notify.on_pushd then
vim.notify(self:repr())
end
end
--- Removes one or more directories off the stack and changes the path to it
---@param count integer? The number of directories to pop or nil for one
function DirStack:popd(count)
count = count or 1
self:pop(count)
local top_path = self:peek()
if top_path then
self:cd(top_path)
end
if config.notify.on_popd then
vim.notify(self:repr())
end
end
return DirStack

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local M = {}
local utils = require("tests.utils.utils")
local root = utils.paths.Root:push(".deps/")
---@class ppd.test.MinPlugin A plugin to download and register on the package path
---@alias ppd.test.PluginName string The plugin name, will be used as part of the git clone destination
---@alias ppd.test.PluginCloneInfo string | string[] The git url a plugin located at or a table of arguments to be passed to `git clone`
---@alias ppd.test.MinPlugins table<ppd.test.PluginName, ppd.test.PluginCloneInfo>
---Downloads a plugin from a given url and registers it on the 'runtimepath'
---@param plugin_name ppd.test.PluginName
---@param plugin_clone_args ppd.test.PluginCloneInfo
function M.load_plugin(plugin_name, plugin_clone_args)
local package_root = root:push("plugins/")
local install_destination = package_root:push(plugin_name):get()
vim.opt.runtimepath:append(install_destination)
if not vim.loop.fs_stat(package_root:get()) then
vim.fn.mkdir(package_root:get(), "p")
end
-- If the plugin install path already exists, we don't need to clone it again.
if not vim.loop.fs_stat(install_destination) then
print(string.format("[LOAD PLUGIN] Downloading plugin '%s' to '%s'", plugin_name, install_destination))
if type(plugin_clone_args) == "table" then
plugin_clone_args = table.concat(plugin_clone_args, " ")
end
vim.fn.system {
"git",
"clone",
"--depth=1",
plugin_clone_args,
install_destination,
}
if vim.v.shell_error > 0 then
error(
string.format("[LOAD PLUGIN] Failed to clone plugin: '%s' to '%s'!", plugin_name, install_destination),
vim.log.levels.ERROR
)
end
end
print(("[LOAD PLUGIN] Loaded plugin '%s'"):format(plugin_name))
end
---Do the initial setup. Downloads plugins, ensures the minimal init does not pollute the filesystem by keeping
---everything self contained to the CWD of the minimal init file. Run prior to running tests, reproducing issues, etc.
---@param plugins ppd.test.MinPlugins
function M.setup(plugins)
print("[SETUP] Setting up minimal init")
-- Instead of disabling swap and a bunch of other stuff, we override default xdg locations for
-- Neovim so our test client is as close to a normal client in terms of options as possible
local xdg_root = root:push("xdg")
local std_paths = {
"cache",
"data",
"config",
"state",
}
local clean = (vim.env.TEST_CLEANUP and vim.env.TEST_CLEANUP:lower() or true)
if clean then
vim.fn.delete(xdg_root:get(), "rf")
elseif clean == "false" or clean == "0" then
print("[CLEANUP]: `TEST_CLEANUP` was disabled, not cleaning " .. xdg_root:get())
end
for _, std_path in pairs(std_paths) do
local xdg_str = "XDG_" .. std_path:upper() .. "_HOME"
local xdg_path = xdg_root:push(std_path):get()
print(("[SETUP] Set vim.env.%s -> %s"):format(xdg_str, xdg_path))
vim.env[xdg_str] = xdg_path
---@diagnostic disable-next-line: param-type-mismatch
vim.fn.mkdir(xdg_path, "p")
end
-- Empty the package path so we use only the plugins specified
vim.opt.packpath = {}
-- Install required plugins
if plugins ~= nil then
for plugin_name, plugin_clone_args in pairs(plugins) do
M.load_plugin(plugin_name, plugin_clone_args)
end
end
-- Ensure `ppd` is registed on the runtimepath, set it up, and initialize it
utils.rtp_register_plugin()
require("ppd").setup()
print("[SETUP] Finished setting up minimal init")
end
M.setup {
["plenary.nvim"] = "https://github.com/nvim-lua/plenary.nvim",
}

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local ppd = require("ppd")
describe("Global Scoped", function()
before_each(function() end)
describe("pushd", function()
it("should set the correct directory", function()
assert.True(false)
end)
end)
end)

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require("tests.minimal_init")
---@type string
local test_file = vim.v.argv[#vim.v.argv]
if test_file == "" or not test_file:find("tests/specs/", nil, true) then
test_file = "tests/specs"
end
print("[STARTUP] Running all tests in " .. test_file)
require("plenary.test_harness").test_directory(test_file, {
minimal_init = "tests/minimal_init.lua",
sequential = true,
})

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local M = {}
---Search up from the current file until we find the full path of the base `tests/` directory and
---return it
---@param test_file string Filename to look for in each directory, if it exists then stop the search
---@return fun(): string dir A function wrapping the found directory
local function search_dir_up(test_file)
-- This is the path of the directory of the current file
local cur_dir = vim.fn.fnamemodify(debug.getinfo(1, "S").source:sub(2), ":p")
local uv = vim.uv or vim.loop
---@diagnostic disable-next-line: param-type-mismatch
while not uv.fs_stat(cur_dir .. "/" .. test_file, nil) and cur_dir ~= "/" do
cur_dir = vim.fn.fnamemodify(cur_dir, ":h")
end
if cur_dir == "/" then
error("Failed to locate the base 'tests/' directory!")
end
-- We return a wrapping function instead of a bare string so its easier to enforce "readonly"
-- uses of the searched directory
return function()
return cur_dir
end
end
--- WARN: DO NOT MUTATE THESE VALUES!
---
--- Table containing useful paths to directories within the plugin
M.static = {
--- Full path of the `tests/` directory
tests_dir = search_dir_up("test.lua"),
--- Full base path of the plugin where the `.git` directory resides
plugin_dir = search_dir_up(".git"),
}
---@class ppd.test.Root
---@field package path string
local Root = {
path = M.static.tests_dir(),
}
---@package
---@nodiscard
---@return ppd.test.Root
function Root:new(o)
o = o or {}
setmetatable(o, self)
-- The last part of the path must be a "/" to work correctly
if self.path:sub(#self.path, #self.path) ~= "/" then
self.path = self.path .. "/"
end
self.__index = self
return o
end
--- Create a new instance, pushing the given path onto it
---@nodiscard
---@param path string The new path to add
---@return ppd.test.Root
function Root:push(path)
local new_root = self:new()
-- Since we're extending the path, the current path must be a directory, ensure it ends in a "/"
if new_root.path:sub(#new_root.path) ~= "/" then
new_root.path = new_root.path .. "/"
end
new_root.path = new_root.path .. path
return new_root
end
--- Get the current path string
---@return string path
function Root:get()
return self.path
end
M.Root = Root:new()
return M

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local path_utils = require("tests.utils.paths")
local M = {}
M.paths = path_utils
--- Register the main plugin on the runtimepath
M.rtp_register_plugin = function()
vim.opt.runtimepath:append(path_utils.static.plugin_dir())
end
return M