RE: help: regexp that works in applet but not in my code...

[Sam Wilson]

By the way... by failing I mean that the call to re.match() is returning false.

Thanks again,

Sam Wilson

-----Original Message-----
From: Sam Wilson 
Sent: Wednesday, February 23, 2005 5:57 PM
To: regexp-user@jakarta.apache.org
Subject: help: regexp that works in applet but not in my code...


Hey there,

I'm trying to make use of the RegExp library to parse the MAC address from the 
output of the Windows "ipconfig" program. I have an RE that I have tested using 
the Applet on your site and it is working fine. However, when I run the exact 
same RE in my code, it is failing.

Here's the text I'm searching (Apologize in advance if this messes with your 
MUA, but figured exactness was preferred...):

Host Name . . . . . . . . . . . . : xxx   Primary Dns Suffix  . . . . . . . : 
xxx   Node Type . . . . . . . . . . . . : Hybrid   IP Routing Enabled. . . . . 
. . . : No   WINS Proxy Enabled. . . . . . . . : No   DNS Suffix Search List. . 
. . . . : xxx                                       xxxEthernet adapter Local 
Area Connection:   Connection-specific DNS Suffix  . :    Description . . . . . 
. . . . . . : Marvell Yukon 88E8001/8003/8010 PCI Gigabit Ethernet Controller   
Physical Address. . . . . . . . . : 00-11-2F-C9-0E-34   DHCP Enabled. . . . . . 
. . . . . : No   IP Address. . . . . . . . . . . . : 10.1.1.1   Subnet Mask . . 
. . . . . . . . . : 255.255.255.255   Default Gateway . . . . . . . . . : 
10.1.1.1   DNS Servers . . . . . . . . . . . : 10.1.1.1                         
              10.2.1.5   Primary WINS Server . . . . . . . : 10.1.1.1   
Secondary WINS Server . . . . . . : 10.1.1.1

Here's the RE I'm using:

([:xdigit:]{2})(\-[:xdigit:]{2}){5}

Here's the output I see from the applet:

Matches.

$0 = 00-11-2F-C9-0E-34
$1 = 00
$2 = -11
$3 = -2F
$4 = -C9
$5 = -0E
$6 = -34

Here's my code snippet:

    private static String getEthernetAddressFromIPConfig()
    {
        String ipconfig = getIPConfig();
        ServiceDebugger.println("Text to search: " + ipconfig);

        ServiceDebugger.println("Regular Expression to extract MAC: " + IPRE);
        RE re = new RE();
        try {
            re.setProgram(new RECompiler().compile(IPRE));
        }
        catch(RESyntaxException ex) {
            throw new RuntimeException("Failed to compile RE: " + 
ex.getMessage(), ex);
        }

        if(re.match(ipconfig)) {
            ServiceDebugger.println("MAC address found: " + re.getParen(0));
            return re.getParen(0);
        }
        else {
            ServiceDebugger.println("MAC not found.");
        }

        return null;
    }

I'm wondering if I'm not setting up the RE variable correctly. Also, I'm using 
the 1.3 version of the library. Let me know if any more info would be useful.

Thanks in advance,

Sam Wilson
Senior Software Engineer
610-941-4600 x228
610-941-4660 (fax)
[EMAIL PROTECTED]
http://www.ecount.com


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