From: Robert Klemme <shortcutter@...>
Date: 2009-12-02T19:30:10+09:00
Subject: Re: Searching Text for Multiple Matches

2009/11/30 jackster the jackle <johnsheahan@att.net>:
> 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?

I would attempt a two stage approach:

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


str = <<'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 = adapter[%r{Ethernet\s+adapter\s+(\S[^:]*):}, 1]
  addr = adapter[%r{IP Address[^:]*:\s*(\d+(?:\.\d+){3})}, 1]
  printf "%p %p\n", name, addr
end

Kind regards

robert

-- 
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