mirror of
https://github.com/koreader/koreader
synced 2024-10-31 21:20:20 +00:00
97 lines
2.1 KiB
Lua
97 lines
2.1 KiB
Lua
--[[--
|
|
Logger module.
|
|
See @{Logger.levels} for list of supported levels.
|
|
|
|
Example:
|
|
|
|
local logger = require("logger")
|
|
logger.info("Something happened.")
|
|
logger.err("House is on fire!")
|
|
]]
|
|
|
|
local dump = require("dump")
|
|
local isAndroid, android = pcall(require, "android")
|
|
|
|
local DEFAULT_DUMP_LVL = 10
|
|
|
|
--- Supported logging levels
|
|
-- @table Logger.levels
|
|
-- @field dbg debug
|
|
-- @field info informational (default level)
|
|
-- @field warn warning
|
|
-- @field err error
|
|
local LOG_LVL = {
|
|
dbg = 1,
|
|
info = 2,
|
|
warn = 3,
|
|
err = 4,
|
|
}
|
|
|
|
local LOG_PREFIX = {
|
|
dbg = 'DEBUG',
|
|
info = 'INFO ',
|
|
warn = 'WARN ',
|
|
err = 'ERROR',
|
|
}
|
|
|
|
local noop = function() end
|
|
|
|
local Logger = {
|
|
levels = LOG_LVL,
|
|
}
|
|
|
|
local function log(log_lvl, dump_lvl, ...)
|
|
local line = ""
|
|
for i,v in ipairs({...}) do
|
|
if type(v) == "table" then
|
|
line = line .. " " .. dump(v, dump_lvl)
|
|
else
|
|
line = line .. " " .. tostring(v)
|
|
end
|
|
end
|
|
if isAndroid then
|
|
if log_lvl == "dbg" then
|
|
android.LOGV(line)
|
|
elseif log_lvl == "info" then
|
|
android.LOGI(line)
|
|
elseif log_lvl == "warn" then
|
|
android.LOGW(line)
|
|
elseif log_lvl == "err" then
|
|
android.LOGE(line)
|
|
end
|
|
else
|
|
io.stdout:write(os.date("%x-%X"), " ", LOG_PREFIX[log_lvl], line, "\n")
|
|
io.stdout:flush()
|
|
end
|
|
end
|
|
|
|
local LVL_FUNCTIONS = {
|
|
dbg = function(...) log('dbg', DEFAULT_DUMP_LVL, ...) end,
|
|
info = function(...) log('info', DEFAULT_DUMP_LVL, ...) end,
|
|
warn = function(...) log('warn', DEFAULT_DUMP_LVL, ...) end,
|
|
err = function(...) log('err', DEFAULT_DUMP_LVL, ...) end,
|
|
}
|
|
|
|
|
|
--[[--
|
|
Set logging level. By default, level is set to info.
|
|
|
|
@int new_lvl new logging level, must be one of the levels from @{Logger.levels}
|
|
|
|
@usage
|
|
Logger:setLevel(Logger.levels.warn)
|
|
]]
|
|
function Logger:setLevel(new_lvl)
|
|
for lvl_name, lvl_value in pairs(LOG_LVL) do
|
|
if new_lvl <= lvl_value then
|
|
self[lvl_name] = LVL_FUNCTIONS[lvl_name]
|
|
else
|
|
self[lvl_name] = noop
|
|
end
|
|
end
|
|
end
|
|
|
|
Logger:setLevel(LOG_LVL.info)
|
|
|
|
return Logger
|