All the lua functions I don't want to write twice.
plenary:
full; complete; entire; absolute; unqualified.
Note that this library is useless outside of Neovim since it requires Neovim functions. It should be usable with any recent version of Neovim though.
At the moment, it is very much in pre-alpha 😄 Expect changes to the way some functions are structured. I'm hoping to finish some document generators to provide better documentation for people to use and consume and then at some point we'll stabilize on a few more stable APIs.
Plug 'nvim-lua/plenary.nvim'plenary.asyncplenary.async_libplenary.jobplenary.pathplenary.scandirplenary.context_managerplenary.test_harnessplenary.filetypeplenary.strings
A Lua module for asynchronous programming using coroutines. This library is built on native lua coroutines and libuv. Coroutines make it easy to avoid callback hell and allow for easy cooperative concurrency and cancellation. Apart from allowing users to perform asynchronous io easily, this library also functions as an abstraction for coroutines.
You can do
local async = require "plenary.async"All other modules are automatically required and can be accessed by indexing async.
You needn't worry about performance as this will require all the submodules lazily.
Libuv luv provides this example of reading a file.
local uv = vim.loop
local read_file = function(path, callback)
uv.fs_open(path, "r", 438, function(err, fd)
assert(not err, err)
uv.fs_fstat(fd, function(err, stat)
assert(not err, err)
uv.fs_read(fd, stat.size, 0, function(err, data)
assert(not err, err)
uv.fs_close(fd, function(err)
assert(not err, err)
callback(data)
end)
end)
end)
end)
endWe can write it using the library like this:
local a = require "plenary.async"
local read_file = function(path)
local err, fd = a.uv.fs_open(path, "r", 438)
assert(not err, err)
local err, stat = a.uv.fs_fstat(fd)
assert(not err, err)
local err, data = a.uv.fs_read(fd, stat.size, 0)
assert(not err, err)
local err = a.uv.fs_close(fd)
assert(not err, err)
return data
endPlease use plenary.async instead. This was version 1 and is just here for compatibility reasons.
A Lua module to interact with system processes. Pass in your command, the desired args, env and cwd.
Define optional callbacks for on_stdout, on_stderr and on_exit and start your Job.
Note: Each job has an empty environment.
local Job = require'plenary.job'
Job:new({
command = 'rg',
args = { '--files' },
cwd = '/usr/bin',
env = { ['a'] = 'b' },
on_exit = function(j, return_val)
print(return_val)
print(j:result())
end,
}):sync() -- or start()A Lua module that implements a bunch of the things from pathlib from Python, so that paths are easy to work with.
plenery.scandir is fast recursive file operations. It is similar to unix find or fd in that it can do recursive scans over a given directory, or a set of directories.
It offers a wide range of opts for limiting the depth, show hidden and more. plenary.scan_dir can be ran synchronously and asynchronously and offers on_insert(file, typ) and on_exit(files) callbacks. on_insert(file, typ) is available for both while on_exit(files) is only available for async.
local scan = require'plenary.scandir`
scan.scan_dir('.', { hidden = true, depth = 2 })This module also offers ls -la sync and async functions that will return a formated string for all files in the directory.
Why? Just for fun
Implements with and open just like in Python. For example:
local with = context_manager.with
local open = context_manager.open
local result = with(open("README.md"), function(reader)
return reader:read()
end)
assert(result == "# plenary.nvim")Supports (simple) busted-style testing. It implements a mock-ed busted interface, that will allow you to run simple busted style tests in separate neovim instances.
To run the current spec file in a floating window, you can use the keymap <Plug>PlenaryTestFile. For example:
nmap <leader>t <Plug>PlenaryTestFile
To run a whole directory from the command line, you could do something like:
nvim --headless -c "PlenaryBustedDirectory tests/plenary/ {minimal_init = 'tests/minimal_init.vim'}"
Where the first argument is the directory you'd like to test. It will search for files with
the pattern *_spec.lua and execute them in separate neovim instances.
The second argument is a Lua option table with the following fields:
minimal_init: specify an init.vim to use for this instance, uses--nopluginminimal: uses--nopluginwithout an init script (overridesminimal_init)sequential: whether to run tests sequentially (default is to run in parallel)keep_going: ifsequential, whether to continue on test failure (default true)timeout: controls the maximum time allotted to each job in parallel or sequential operation (defaults to 50,000 milliseconds)
The exit code is 0 when success and 1 when fail, so you can use it easily in a Makefile!
NOTE:
So far, the only supported busted items are:
describeitpendingbefore_eachafter_eachclearassert.*etc. (from luassert, which is bundled)
OTHER NOTE:
We used to support luaunit and original busted but it turns out it was way too hard and not worthwhile
for the difficulty of getting them setup, particularly on other platforms or in CI. Now, we have a dep free
(or at least, no other installation steps necessary) busted implementation that can be used more easily.
Please take a look at the new APIs and make any issues for things that aren't clear. I am happy to fix them and make it work well :)
OTHER OTHER NOTE: Take a look at some test examples here.
You no longer need nvim-terminal to get this to work. We use nvim_open_term now.
Will detect the filetype based on extension/special filename/shebang or modeline
require'plenary.filetype'.detect(filepath, opts)is a function that does all of above and exits as soon as a filetype is foundrequire'plenary.filetype'.detect_from_extension(filepath)require'plenary.filetype'.detect_from_name(filepath)require'plenary.filetype'.detect_from_modeline(filepath)require'plenary.filetype'.detect_from_shebang(filepath)
Add filetypes by creating a new file named ~/.config/nvim/data/plenary/filetypes/foo.lua and register that file with
:lua require'plenary.filetype'.add_file('foo'). Content of the file should look like that:
return {
extension = {
-- extension = filetype
-- example:
['jl'] = 'julia',
},
file_name = {
-- special filenames, likes .bashrc
-- we provide a decent amount
-- name = filetype
-- example:
['.bashrc'] = 'bash',
},
shebang = {
-- Shebangs are supported as well. Currently we provide
-- sh, bash, zsh, python, perl with different prefixes like
-- /usr/bin, /bin/, /usr/bin/env, /bin/env
-- shebang = filetype
-- example:
['/usr/bin/node'] = 'javascript',
}
}Re-implement VimL funcs to use them in Lua loop.
strings.strdisplaywidthstrings.strcharpart
And some other funcs are here to deal with common problems.
strings.truncatestrings.align_strstrings.dedent
Thin wrapper around LuaJIT's jit.p profiler.
require'plenary.profile'.start("profile.log")
-- code to be profiled
require'plenary.profile'.stop()You can use start("profile.log", {flame = true}) to output the log in a
flamegraph-compatible format. A flamegraph can be created from this using
https://github.com/jonhoo/inferno via
inferno-flamegraph profile.log > flame.svg
The resulting interactive SVG file can be viewed in any browser.
Status: WIP
See popup documentation for both progress tracking and implemented APIs.
Window helper functions to wrap some of the more difficult cases. Particularly for floating windows.
Status: WIP
Contains pure lua implementations for various standard collections.
local List = require 'plenary.collections.py_list'
local myList = List { 9, 14, 32, 5 }
for i, v in myList:iter() do
print(i, v)
end
Status: WIP
If you're having trouble / things are hanging / other problems:
$ export DEBUG_PLENARY=true
This will enable debuggin for the plugin.
DELETED: Please use packer.nvim or other lua-rocks wrapper instead. This no longer exists.