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- Subject: Re: Any LPEG tutorial for laymen ?
- From: David Crayford <dcrayford@...>
- Date: Tue, 24 Sep 2013 20:07:52 +0800
On 24/09/2013 11:44 AM, Jayanth Acharya wrote:
Went through 3-4 different sources to understand how to use LPEG. Just
can't seem to cross the chasm, in beginning to comprehend how to use
it. I've to admit, that I have grappled with PEG as well (the Wiki
page). I am beginning to think that I need to develop a level of
expertise of Lua, before I can step-up to understanding something like
LPEG. The way the grammar is described... seems so unusual, and
syntactically doesn't look like Lua.
Is there a layman friendly, step-by-step tutorial explaining PEG and
usage of LPEG ?
I'm another layman wanting to grok LPeg. I come from a mainframe
background where the lingua franca is REXX. Lua really does nuke REXX in
just about every aspect other than simplicity of parsing.
Take the following output from a netstat command.
Client Name: SMTP Client Id: 000000B7
Local Socket: 0.0.0.0..1049
Foreign Socket: *..*
Last Touched: 10:51:10
MaxSendLim: 0000065535 MaxRecvLim: 0000065535
SockOpt: D0000000 DSField: 00
ReceiveDataQueued: 0000000000 ReceiveMsgCnt: 0000000000
I would love to learn how to write LPeg parser to yank the key->values
from that multi-line report easily. I know it can be done I just can't
work it out because I'm a neophyte.