author | Kim Alvefur <zash@zash.se> |
Fri, 21 Sep 2018 21:19:44 +0200 | |
changeset 9339 | 9e8d7d461c7d |
parent 8420 | e88db5668cfb |
child 9660 | 3da6cc927ee6 |
permissions | -rw-r--r-- |
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util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
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-- |
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util.format: A string.format wrapper that gracefully handles invalid arguments
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parents:
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-- A string.format wrapper that gracefully handles invalid arguments |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
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-- |
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util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
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util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
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local tostring = tostring; |
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util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
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local select = select; |
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util.format: Import unpack from table lib in Lua 5.2+
Kim Alvefur <zash@zash.se>
parents:
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local unpack = table.unpack or unpack; -- luacheck: ignore 113/unpack |
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util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
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local type = type; |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
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e5d00bf4a4d5
util: Various minor changes to please [luacheck]
Kim Alvefur <zash@zash.se>
parents:
8228
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local function format(formatstring, ...) |
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util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
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local args, args_length = { ... }, select('#', ...); |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
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70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
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-- format specifier spec: |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
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-- 1. Start: '%%' |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
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-- 2. Flags: '[%-%+ #0]' |
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util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
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-- 3. Width: '%d?%d?' |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
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-- 4. Precision: '%.?%d?%d?' |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
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-- 5. Option: '[cdiouxXaAeEfgGqs%%]' |
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util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
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-- |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
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-- The options c, d, E, e, f, g, G, i, o, u, X, and x all expect a number as argument, whereas q and s expect a string. |
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util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
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-- This function does not accept string values containing embedded zeros, except as arguments to the q option. |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
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-- a and A are only in Lua 5.2+ |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
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|
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
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|
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
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25 |
-- process each format specifier |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
|
26 |
local i = 0; |
8385
e5d00bf4a4d5
util: Various minor changes to please [luacheck]
Kim Alvefur <zash@zash.se>
parents:
8228
diff
changeset
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27 |
formatstring = formatstring:gsub("%%[^cdiouxXaAeEfgGqs%%]*[cdiouxXaAeEfgGqs%%]", function(spec) |
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util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
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if spec ~= "%%" then |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
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i = i + 1; |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
|
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local arg = args[i]; |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
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|
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if arg == nil then -- special handling for nil |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
|
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arg = "<nil>" |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
|
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args[i] = "<nil>"; |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
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end |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
|
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70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
|
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local option = spec:sub(-1); |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
|
37 |
if option == "q" or option == "s" then -- arg should be string |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
|
38 |
args[i] = tostring(arg); |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
|
39 |
elseif type(arg) ~= "number" then -- arg isn't number as expected? |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
|
40 |
args[i] = tostring(arg); |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
|
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spec = "[%s]"; |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
|
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end |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
|
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end |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
|
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return spec; |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
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end); |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
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70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
|
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-- process extra args |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
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while i < args_length do |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
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|
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i = i + 1; |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
|
50 |
local arg = args[i]; |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
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|
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if arg == nil then |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
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args[i] = "<nil>"; |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
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else |
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util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
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args[i] = tostring(arg); |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
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end |
8385
e5d00bf4a4d5
util: Various minor changes to please [luacheck]
Kim Alvefur <zash@zash.se>
parents:
8228
diff
changeset
|
56 |
formatstring = formatstring .. " [%s]" |
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util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
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end |
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util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
changeset
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|
8385
e5d00bf4a4d5
util: Various minor changes to please [luacheck]
Kim Alvefur <zash@zash.se>
parents:
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diff
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return formatstring:format(unpack(args)); |
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util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
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end |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
diff
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|
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util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
parents:
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return { |
70cb72f46a3b
util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
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format = format; |
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util.format: A string.format wrapper that gracefully handles invalid arguments
Waqas Hussain <waqas20@gmail.com>
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}; |