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local fs = require 'bee.filesystem'
local time = require 'bee.time'
local monotonic = time.monotonic
local osDate = os.date
local ioOpen = io.open
local tablePack = table.pack
local tableConcat = table.concat
local tostring = tostring
local debugTraceBack = debug.traceback
local mathModf = math.modf
local debugGetInfo = debug.getinfo
local ioStdErr = io.stderr
local m = {}
m.file = nil
m.startTime = time.time() - monotonic()
m.size = 0
m.maxSize = 100 * 1024 * 1024
local function trimSrc(src)
if src:sub(1, 1) == '@' then
src = src:sub(2)
end
return src
end
local function init_log_file()
if not m.file then
m.file = ioOpen(m.path, 'w')
if not m.file then
return
end
m.file:write('')
m.file:close()
m.file = ioOpen(m.path, 'ab')
if not m.file then
return
end
m.file:setvbuf 'no'
end
end
local function pushLog(level, ...)
if not m.path then
return
end
local t = tablePack(...)
for i = 1, t.n do
t[i] = tostring(t[i])
end
local str = tableConcat(t, '\t', 1, t.n)
if level == 'error' then
str = str .. '\n' .. debugTraceBack(nil, 3)
end
local info = debugGetInfo(3, 'Sl')
return m.raw(0, level, str, info.source, info.currentline, monotonic())
end
function m.info(...)
pushLog('info', ...)
end
function m.debug(...)
pushLog('debug', ...)
end
function m.trace(...)
pushLog('trace', ...)
end
function m.warn(...)
pushLog('warn', ...)
end
function m.error(...)
return pushLog('error', ...)
end
function m.raw(thd, level, msg, source, currentline, clock)
if level == 'error' then
ioStdErr:write(msg .. '\n')
if not m.firstError then
m.firstError = msg
end
end
if m.size > m.maxSize then
return
end
init_log_file()
local sec, ms = mathModf((m.startTime + clock) / 1000)
local timestr = osDate('%H:%M:%S', sec)
local agl = ''
if #level < 5 then
agl = (' '):rep(5 - #level)
end
local buf
if currentline == -1 then
buf = ('[%s.%03.f][%s]%s[#%d]: %s\n'):format(timestr, ms * 1000, level, agl, thd, msg)
else
buf = ('[%s.%03.f][%s]%s[#%d:%s:%s]: %s\n'):format(timestr, ms * 1000, level, agl, thd, trimSrc(source), currentline, msg)
end
m.size = m.size + #buf
if m.file then
if m.size > m.maxSize then
m.file:write(buf:sub(1, m.size - m.maxSize))
m.file:write('[REACH MAX SIZE]')
else
m.file:write(buf)
end
end
return buf
end
function m.init(root, path)
local lastBuf
if m.file then
m.file:close()
m.file = nil
local file = ioOpen(m.path, 'rb')
if file then
lastBuf = file:read(m.maxSize)
file:close()
end
end
m.path = path:string()
m.prefixLen = #root:string()
m.size = 0
pcall(function ()
if not fs.exists(path:parent_path()) then
fs.create_directories(path:parent_path())
end
end)
if lastBuf then
init_log_file()
if m.file then
m.file:write(lastBuf)
m.size = m.size + #lastBuf
end
end
end
return m
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