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local log = require "nvim-lsp-installer.log"
local uv = vim.loop
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
local lines = vim.split(data, "\n")
for i = 1, #lines do
sink(lines[i])
end
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 environ = vim.fn.environ()
function M.graft_env(env)
local root_env = {}
for key, val in pairs(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
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 }
log.debug { "Spawning", cmd, opts }
local spawn_opts = {
env = opts.env,
stdio = stdio,
args = opts.args,
cwd = opts.cwd,
detached = false,
hide = true,
}
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
opts.stdio_sink.stderr(("Failed to spawn process cmd=%s pid=%s"):format(cmd, pid))
callback(false)
return nil, nil
end
handle:unref()
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
return M
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