prosody
8c92ef4270c9
util/format.lua

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util/format.lua @ 9687:8c92ef4270c9

util.format: Use pack from util.table
author Kim Alvefur <zash@zash.se>
date Sat, 08 Dec 2018 16:35:39 +0100
parent 9656:3da6cc927ee6
child 9693:6ed0d6224d64
comparison
equal deleted inserted replaced
9686:e52e4e6e7ffb 9687:8c92ef4270c9
1 -- 1 --
2 -- A string.format wrapper that gracefully handles invalid arguments 2 -- A string.format wrapper that gracefully handles invalid arguments
3 -- 3 --
4 4
5 local tostring = tostring; 5 local tostring = tostring;
6 local select = select;
7 local unpack = table.unpack or unpack; -- luacheck: ignore 113/unpack 6 local unpack = table.unpack or unpack; -- luacheck: ignore 113/unpack
7 local pack = require "util.table".pack; -- TODO table.pack in 5.2+
8 local type = type; 8 local type = type;
9 9
10 local function format(formatstring, ...) 10 local function format(formatstring, ...)
11 local args, args_length = { ... }, select('#', ...); 11 local args = pack(...);
12 local args_length = args.n;
12 13
13 -- format specifier spec: 14 -- format specifier spec:
14 -- 1. Start: '%%' 15 -- 1. Start: '%%'
15 -- 2. Flags: '[%-%+ #0]' 16 -- 2. Flags: '[%-%+ #0]'
16 -- 3. Width: '%d?%d?' 17 -- 3. Width: '%d?%d?'