Searching Text for Multiple Matches

[jackster the jackle]

I am using ruby to search and match text in a file that has several
mathes.

Here is the text:

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : corp.pc.com
IP Address. . . . . . . . . . . . : 172.1.81.7
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 172.1.81.254

Ethernet adapter Network Connect Adapter:

Media State . . . . . . . . . . . : Media disconnected

Ethernet adapter Wireless Network Connection:

Connection-specific DNS Suffix . : corp.pc.com
IP Address. . . . . . . . . . . . : 172.1.17.116
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 172.1.17.254

What I need to do it pull out the IP address and default gateway IP
addresses for each interface and store them for processing later on in
the script.

What method should I use to get the first ip address and gateway and
store it, then grab the next set and store that?

thanks

 

[Roger Pack]

What method should I use to get the first ip address and gateway and
store it, then grab the next set and store that?

I'd probably recommend a regular expression.
something like
a = big_string
big_string =~ /something/



or

big_string.scan(/something/).each {|match|


}

 

[jackster the jackle]

Thanks Roger. I am currently iterating through each line of text and
matching on any lines that either have "IP Address" or "Default Gateway"
in them and grabbing the IP addresses and assigning them to variables.

The problem is, the first IP address I get seems to disapear toward the
end of the script and I can't figure out why....perhaps because I'm
using "elsif"?

here is the code:

ipconf = `ipconfig`

ipconf.each do |x|

if
x[/IP\sAdd*/]
x.scan(/\s*IP\sAddress.*\:\s([1-9]+\.[0-9]+\.[0-9]+\.[0-9]+)\s+$/)
ip = $1
puts "ip addr: " + $1.to_s ## THIS PRINTS OUT FINE


elsif
x[/Def*/]
puts "XXXXX IP: #{ip}"
x.scan(/\s*Default\sGateway.*\:\s([1-9]+\.[0-9]+\.[0-9]+\.[0-9]+)\s+$/)
def_gate = $1
puts "Default Gateway: "+$1.to_s ## THIS PRINTS OUT FINE


puts "Print IP address again: #{ip_addr}" ### THIS HAS NO VALUE

end
end

I think I need to somehow combine the "if" and "elsif" statements so I'm
not using "or" and this way the ip_addr variable will hold it's value?

thanks

jack

 

[Robert Klemme]

Thanks Roger. I am currently iterating through each line of text and
matching on any lines that either have "IP Address" or "Default Gateway"
in them and grabbing the IP addresses and assigning them to variables.

The problem is, the first IP address I get seems to disapear toward the
end of the script and I can't figure out why....perhaps because I'm
using "elsif"?

here is the code:

ipconf =3D `ipconfig`

ipconf.each do |x|

=A0 =A0 if
=A0 =A0 x[/IP\sAdd*/]
=A0 =A0 x.scan(/\s*IP\sAddress.*\:\s([1-9]+\.[0-9]+\.[0-9]+\.[0-9]+)\s+$/= )
=A0 =A0 ip =3D $1
=A0 =A0 puts "ip addr: " + $1.to_s =A0 ## THIS PRINTS OUT FINE


=A0 =A0 elsif
=A0 =A0 x[/Def*/]
=A0 =A0 puts "XXXXX IP: #{ip}"
=A0 =A0 x.scan(/\s*Default\sGateway.*\:\s([1-9]+\.[0-9]+\.[0-9]+\.[0-9]+)= \s+$/)
=A0 =A0 def_gate =3D $1
=A0 =A0 puts "Default Gateway: "+$1.to_s =A0 ## THIS PRINTS OUT FINE


=A0 =A0 puts "Print IP address again: #{ip_addr}" =A0### THIS HAS NO VALU= E

=A0end
end

I think I need to somehow combine the "if" and "elsif" statements so I'm
not using "or" and this way the ip_addr variable will hold it's value?

I would attempt a two stage approach:

1. stage: match a complete adapter description
2. stage: match individual portions of it


str =3D <<'XXX'
Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : corp.pc.com
IP Address. . . . . . . . . . . . : 172.1.81.7
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 172.1.81.254

Ethernet adapter Network Connect Adapter:

Media State . . . . . . . . . . . : Media disconnected

Ethernet adapter Wireless Network Connection:

Connection-specific DNS Suffix . : corp.pc.com
IP Address. . . . . . . . . . . . : 172.1.17.116
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 172.1.17.254
XXX

str.scan %r{
^ \S [^:]* : \s* $
(?:
^ \s+ [^:]+ : [^:]+ $ [\n\r]+
)*
}x do |adapter|
# p adapter
name =3D adapter[%r{Ethernet\s+adapter\s+(\S[^:]*):}, 1]
addr =3D adapter[%r{IP Address[^:]*:\s*(\d+(?:\.\d+){3})}, 1]
printf "%p %p\n", name, addr
end

Kind regards

robert

--=20
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/