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local log = require "nvim-lsp-installer.log"
local Data = require "nvim-lsp-installer.data"
local platform = require "nvim-lsp-installer.platform"
local uv = vim.loop
local list_any = Data.list_any
local M = {}
local function connect_sink(pipe, sink)
return function(err, data)
if err then
log.error("Unexpected error when reading pipe.", err)
end
if data ~= nil then
sink(data)
else
pipe:read_stop()
pipe:close()
end
end
end
-- We gather the root env immediately, primarily because of E5560.
-- Also, there's no particular reason we need to refresh the environment (yet).
local initial_environ = vim.fn.environ()
function M.extend_path(new_paths)
local new_path_str = table.concat(new_paths, platform.path_sep)
if initial_environ["PATH"] then
return new_path_str .. platform.path_sep .. initial_environ["PATH"]
end
return new_path_str
end
function M.graft_env(env)
local root_env = {}
for key, val in pairs(initial_environ) do
root_env[#root_env + 1] = key .. "=" .. val
end
for key, val in pairs(env) do
root_env[#root_env + 1] = key .. "=" .. val
end
return root_env
end
local function sanitize_env_list(env_list)
local sanitized_list = {}
for _, env in ipairs(env_list) do
local safe_envs = {
"GO111MODULE",
"GOBIN",
"GOPATH",
"PATH",
"GEM_HOME",
"GEM_PATH",
}
local is_safe_env = list_any(safe_envs, function(safe_env)
return env:find(safe_env .. "=") == 1
end)
if is_safe_env then
sanitized_list[#sanitized_list + 1] = env
else
local idx = env:find "="
sanitized_list[#sanitized_list + 1] = env:sub(1, idx) .. "=<redacted>"
end
end
return sanitized_list
end
function M.spawn(cmd, opts, callback)
local stdin = uv.new_pipe(false)
local stdout = uv.new_pipe(false)
local stderr = uv.new_pipe(false)
local stdio = { stdin, stdout, stderr }
local spawn_opts = {
env = opts.env,
stdio = stdio,
args = opts.args,
cwd = opts.cwd,
detached = false,
hide = true,
}
log.lazy_debug(function()
local sanitized_env = sanitize_env_list(opts.env or {})
return "Spawning cmd=%s, spawn_opts=%s",
cmd,
{
args = opts.args,
cwd = opts.cwd,
env = sanitized_env,
}
end)
local handle, pid
handle, pid = uv.spawn(cmd, spawn_opts, function(exit_code, signal)
local successful = exit_code == 0 and signal == 0
handle:close()
if not stdin:is_closing() then
stdin:close()
end
-- ensure all pipes are closed, for I am a qualified plumber
local check = uv.new_check()
check:start(function()
for i = 1, #stdio do
local pipe = stdio[i]
if not pipe:is_closing() then
return
end
end
check:stop()
callback(successful)
end)
end)
if handle == nil then
log.error("Failed to spawn process", cmd, pid)
opts.stdio_sink.stderr(("Failed to spawn process cmd=%s pid=%s\n"):format(cmd, pid))
callback(false)
return nil, nil
end
log.debug("Spawned with pid", pid)
stdout:read_start(connect_sink(stdout, opts.stdio_sink.stdout))
stderr:read_start(connect_sink(stderr, opts.stdio_sink.stderr))
return handle, stdio
end
function M.chain(opts)
local stack = {}
return {
run = function(cmd, args)
stack[#stack + 1] = { cmd = cmd, args = args }
end,
spawn = function(callback)
local function execute(idx)
local item = stack[idx]
M.spawn(
item.cmd,
vim.tbl_deep_extend("force", opts, {
args = item.args,
}),
function(successful)
if successful and stack[idx + 1] then
-- iterate
execute(idx + 1)
else
-- we done
callback(successful)
end
end
)
end
execute(1)
end,
}
end
function M.empty_sink()
local function noop() end
return {
stdout = noop,
stderr = noop,
}
end
function M.simple_sink()
return {
stdout = vim.schedule_wrap(print),
stderr = vim.schedule_wrap(vim.api.nvim_err_writeln),
}
end
function M.in_memory_sink()
local buffers = { stdout = {}, stderr = {} }
return {
buffers = buffers,
sink = {
stdout = function(chunk)
buffers.stdout[#buffers.stdout + 1] = chunk
end,
stderr = function(chunk)
buffers.stderr[#buffers.stderr + 1] = chunk
end,
},
}
end
-- this prob belongs elsewhere ¯\_(ツ)_/¯
function M.debounced(debounced_fn)
local queued = false
local last_arg = nil
return function(a)
last_arg = a
if queued then
return
end
queued = true
vim.schedule(function()
debounced_fn(last_arg)
queued = false
last_arg = nil
end)
end
end
return M
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