diff options
Diffstat (limited to 'util/format.lua')
| -rw-r--r-- | util/format.lua | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/util/format.lua b/util/format.lua index c5e513fa..1ce670f3 100644 --- a/util/format.lua +++ b/util/format.lua @@ -3,12 +3,20 @@ -- local tostring = tostring; -local select = select; local unpack = table.unpack or unpack; -- luacheck: ignore 113/unpack +local pack = require "util.table".pack; -- TODO table.pack in 5.2+ local type = type; +local dump = require "util.serialization".new("debug"); +local num_type = math.type or function (n) + return n % 1 == 0 and n <= 9007199254740992 and n >= -9007199254740992 and "integer" or "float"; +end + +-- In Lua 5.3+ these formats throw an error if given a float +local expects_integer = { c = true, d = true, i = true, o = true, u = true, X = true, x = true, }; local function format(formatstring, ...) - local args, args_length = { ... }, select('#', ...); + local args = pack(...); + local args_length = args.n; -- format specifier spec: -- 1. Start: '%%' @@ -28,17 +36,22 @@ local function format(formatstring, ...) if spec ~= "%%" then i = i + 1; local arg = args[i]; - if arg == nil then -- special handling for nil - arg = "<nil>" - args[i] = "<nil>"; - end local option = spec:sub(-1); - if option == "q" or option == "s" then -- arg should be string + if arg == nil then + args[i] = "nil"; + spec = "<%s>"; + elseif option == "q" then + args[i] = dump(arg); + spec = "%s"; + elseif option == "s" then args[i] = tostring(arg); elseif type(arg) ~= "number" then -- arg isn't number as expected? args[i] = tostring(arg); spec = "[%s]"; + elseif expects_integer[option] and num_type(arg) ~= "integer" then + args[i] = tostring(arg); + spec = "[%s]"; end end return spec; |