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local uv = vim.uv or vim.loop
local levels = vim.deepcopy(vim.log.levels)
vim.tbl_add_reverse_lookup(levels)
local Log = {}
---@type integer
Log.level = vim.log.levels.ERROR
---@return string
Log.get_logfile = function()
local fs = require("conform.fs")
local ok, stdpath = pcall(vim.fn.stdpath, "log")
if not ok then
stdpath = vim.fn.stdpath("cache")
end
return fs.join(stdpath, "conform.log")
end
---@param level integer
---@param msg string
---@param ... any[]
---@return string
local function format(level, msg, ...)
local args = vim.F.pack_len(...)
for i = 1, args.n do
local v = args[i]
if type(v) == "table" then
args[i] = vim.inspect(v)
elseif v == nil then
args[i] = "nil"
end
end
local ok, text = pcall(string.format, msg, vim.F.unpack_len(args))
if ok then
local str_level = levels[level]
return string.format("%s[%s] %s", vim.fn.strftime("%H:%M:%S"), str_level, text)
else
return string.format("[ERROR] error formatting log line: '%s' args %s", msg, vim.inspect(args))
end
end
---@param line string
local function write(line)
-- This will be replaced during initialization
end
local initialized = false
local function initialize()
if initialized then
return
end
initialized = true
local filepath = Log.get_logfile()
local stat = uv.fs_stat(filepath)
if stat and stat.size > 10 * 1024 * 1024 then
local backup = filepath .. ".1"
uv.fs_unlink(backup)
uv.fs_rename(filepath, backup)
end
local parent = vim.fs.dirname(filepath)
vim.fn.mkdir(parent, "p")
local logfile, openerr = io.open(filepath, "a+")
if not logfile then
local err_msg = string.format("Failed to open conform.nvim log file: %s", openerr)
vim.notify(err_msg, vim.log.levels.ERROR)
else
write = function(line)
logfile:write(line)
logfile:write("\n")
logfile:flush()
end
end
end
function Log.log(level, msg, ...)
if Log.level <= level then
initialize()
local text = format(level, msg, ...)
write(text)
end
end
function Log.trace(...)
Log.log(vim.log.levels.TRACE, ...)
end
function Log.debug(...)
Log.log(vim.log.levels.DEBUG, ...)
end
function Log.info(...)
Log.log(vim.log.levels.INFO, ...)
end
function Log.warn(...)
Log.log(vim.log.levels.WARN, ...)
end
function Log.error(...)
Log.log(vim.log.levels.ERROR, ...)
end
return Log
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