83 lines
2.7 KiB
Lua
83 lines
2.7 KiB
Lua
-- USAGE:
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-- -- set arbitrary log levels to be printed immediately
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-- log{ info = true, warning = true, ducksauce = true, }
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-- -- disable storage of messages depending on log level
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-- log{ error = false, verbose = false, }
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-- -- send anything (except nil) to a log level
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-- log("bacom", true, "text", 5, function() end, {})
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-- -- print all messages saved at a particular log level
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-- log("error")
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-- -- toggle ALL logging on and off with a boolean
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-- log(false) -- this deletes all stored messages
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-- -- set a maximum number of stored messages per log level
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-- log(50) -- warning: reaching large limits makes logging expensive
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-- -- do anything to the stored messages (this example deletes them all)
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-- log(function(messages) return {} end)
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-- -- check if a log level is being displayed
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-- if log.arbitrary_exit then log("arbitrary_exit") os.exit(1) end
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local microlog = {} -- display_levels are stored directly here
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local stored_messages = {}
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local enable_logging = true
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local message_limit = math.huge
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return setmetatable(microlog, {
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__call = function(options, ...)
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local options_type = type(options)
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if (options_type == "string") and enable_logging then
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if microlog[options] == false then return end
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if not stored_messages[options] then stored_messages[options] = {} end
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local message_table = stored_messages[options]
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-- turn log message into text
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local tab = {...}
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for i = 1, #tab do
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tab[i] = tostring(tab[i])
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end
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local current_message = table.concat(tab, "\t")
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if #current_message == 0 then
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-- print all stored_messages of specified level
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for i = 1, #message_table do
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print(message_table[i])
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end
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else
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-- store message (and print if in display_levels)
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message_table[#message_table + 1] = current_message
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if #message_table > message_limit then table.remove(message_table, 1) end
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if microlog[options] then print(current_message) end
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end
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-- set display_levels
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elseif options_type == "table" then
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for k,v in pairs(options) do
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microlog[k] = v
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end
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elseif options_type == "number" then
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message_limit = options
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for k,v in pairs(stored_messages) do
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while #v > message_limit do
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table.remove(v, 1)
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end
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end
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-- turn all logging off and delete stored messages; or turn it on
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elseif options_type == "boolean" then
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if options then
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enable_logging = true
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else
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enable_logging = false
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stored_messages = {}
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end
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-- arbitrary access :D
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elseif options_type == "function" then
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local result = options(stored_messages)
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if type(result) == "table" then stored_messages = result end
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end
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end
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})
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