Re: Any LPEG tutorial for laymen ?

[David Crayford <dcrayford@...>]

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.