Re: how to read lua table present in file
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- Subject: Re: how to read lua table present in file
- From: dyngeccetor8@...
- Date: 2017年10月16日 06:25:19 +0000
On 10/16/2017 05:23 AM, prashantkumar dhotre wrote:
> hi
> i am new to lua. i have a query related to table reading from file.
> i have a config file in lua table format:
> example:
> return {
> ["param1"] = {
> ["attribute"] = {
> ["myparam"] = 1,
> }
> },
> ["param2"] = 1
> }
>
> could you please let me know how do i read this file and access my config file
> parameters ?
> Thanks
Suppose your config file is named "config.lua" and located in same
directory as .lua file from where you calling it. Then you may load
config as
local config = dofile('config.lua')
or
local config = require('config')
(Way via require() caches result, so several require('config')
will yield to one reading from file.)
Now variable "config" is just ordinary Lua table.
You can get it's values like
local myparam
if
config.param1 and
config.param1.attribute
then
myparam = config.param1.attribute.myparam
end
print('myparam', myparam)
(Here I'm showing "safe" way. You may drop "if" check if you sure
that "param1.attribute" is always present.)
-- Martin