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- Subject: Re: Any LPEG tutorial for laymen ?
- From: David Crayford <dcrayford@...>
- Date: Wed, 25 Sep 2013 12:50:20 +0800
On 24/09/2013 8:51 PM, Luiz Henrique de Figueiredo wrote:
Take the following output from a netstat command.
Client Name: SMTP Client Id: 000000B7
I would love to learn how to write LPeg parser to yank the key->values
from that multi-line report easily.
You don't need LPeg for this task. Try
for k,v in T:gmatch("(%u[%w ]-):%s*(.-)%s") do print(k,v) end
where T contains the netstat output.
Thanks. This is how dumbstruck I am WRT pattern matching. I want to
parse the following piece of netstat output
SKRBKDC 00000099 UDP
Local Socket: 172.17.69.30..464
Foreign Socket: *..*
The top line is the user, connection id and state. All I want to do is
capture three whitespace seperated words.
In REXX I would do this:
parse var line userid connid state
What is the most succinct way of doing something similar in Lua?
But don't let that discourage you from learning LPeg. There is nothing
more effective for learning than concrete motivation.