[antlr-interest] Filtering using ANTLR
Vara Prasad
merupo at yahoo.com
Thu May 17 07:55:31 PDT 2007
Hi All,
I am some what new to ANTLR.
I would like to know how to use filtering using
ANTLR.I saw example provided in examples,but i did not
get much out of that.
Currently am writing java parser using ANTLR(2.7.7).
I am parsing large text file and get desired
contents based on rules that i defined in my grammar
file.
Any help/suggestions will be greately appreciated.
Thanks In Advance,
-Prasad
example:
I've following content in my input file for my parser
i would like to extract only following segment.
crypto
ip-address-pool 22.0.0.0 255.255.0.0
exit
Input file content:
===================
interface ethernet 13/1
ip address 31.1.1.77 255.255.0.0
next-hop common 31.1.1.88
shaping-class unc
egress-queue unc-green
egress-queue unc-yellow
exit
shaping-class mgw
egress-queue mgw-green
egress-queue mgw-yellow
exit
shaping-class ggw
egress-queue ggw-green
egress-queue ggw-yellow
exit
shaping-class default
egress-queue DefaultEgressQueue
exit
exit
exit
clock
timezone -5
sntp server 72.1.1.29
sntp interval 1 hours
time-sync sntp
exit
crypto
ip-address-pool 22.0.0.0 255.255.0.0
exit
high-availability
no auto takeover
node Primary
interface ha-2 ip address 10.6.2.53
interface ha-1 ip address 1.1.1.53
exit
node Secondary
interface ha-2 ip address 10.6.2.52
interface ha-1 ip address 1.1.1.52
exit
interface group Public
interface ethernet 15/1
interface ethernet 1/1
exit
interface group Private
interface ethernet 13/1
interface ethernet 3/1
exit
exit
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