Simple Parsing Scripts

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1) Simple perl script to extract ip address from ipconfig command:


#!/usr/bin/perl

use File::Find;
use File::Copy;
use File::Path;

system ("ipconfig > test.txt");

$filename = "test.txt";
$strToFind = "IPv4";

open(INFILE, $filename) || die "Cannot open file";

$matchFound = 0;

while ($line = )
{
   if ($line =~ /$strToFind/)
    {
      print "$line";
      $matchFound = 1;
    }
}

close(INFILE);

print "\n";

if ($matchFound eq 1)
{
    print "$strToFind was found: $matchFound \n";
}
else
{
    print "$strToFind not found in $filename \n";
}


-----> Simple Ruby Script to parse IP address from ipconfig command <------------

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2) Simple VB Script to parse MAC address and ip address from ipconfig command:

' VBScript Source File 

'

' NAME: myIPfunc.vbs

'

' AUTHOR: Swati Kher

'

' COMMENT: How to parse IPConfig command with vbscript 

'======================================================

Option Explicit

wscript.echo "Mac Address = ["& GetMac() & "]"

wscript.quit(0)

' ********************************************************************************************

' ******** GetMac ********

' ********************************************************************************************

Function GetMac()

   Dim WshShell, oExec , physaddr, macaddr, ipaddr

   Dim iLocation, name, strInputFile, iLoc2, name2

   Dim FSO, objFile

   Dim strLine

   Set WshShell = CreateObject("WScript.Shell") 

   set oExec = WshShell.Exec("cmd.exe /c ipconfig /all")

   physaddr = oExec.StdOut.ReadAll()

   name    = "Physical Address"

   name2   = "IPv4 Address"

   macaddr = "tbd"

  

   iLocation = InStr (physaddr, name)

   iLoc2 = InStr(physaddr, name2)

   

   

   WScript.Echo iLocation

   

   if (iLocation) then

       macaddr = Right(physaddr, Len(physaddr)  - iLocation)

       ipaddr = Right(physaddr, Len(physaddr) - iLoc2)

       

       'WScript.Echo "First Pass: " & macaddr

       iLocation = InStr (1, macaddr, ":")

       iLoc2 = InStr(1, ipaddr, ":")

       

       macaddr = Right(macaddr, Len(macaddr) - iLocation)

       ipaddr = Right(ipaddr, Len(ipaddr) - iLoc2)

       

       Trim(macaddr)

       Trim(ipaddr)

       

       'WScript.Echo "Second : " & macaddr

       'macaddr = Right(macaddr, Len(macaddr) - 17)

       iLocation = InStr (1, macaddr, vbNewLine)

       iLoc2 = InStr(1, ipaddr, vbNewLine)

       

       macaddr = Left(macaddr, iLocation)

       ipaddr = Left(ipaddr, iLoc2)

       

       macaddr = replace(macaddr, "-", "")

       GetMac = macaddr

       'WScript.Echo "Mac address " & macaddr

       WScript.Echo "IP ADDR: " & ipaddr

   end If

   GetMac = macaddr

   set WshShell = Nothing

   Set oExec = Nothing

End Function

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3)  C++ functions to check palindromes and matching strings:


bool isItPali(char *a)
{
int length, mid, j;
    bool match = true;


if (a==NULL)
{
cout<<"Got a NULL String!!"<
return false;
}

length = strlen(a)-1;
mid = length/2;
j = 0;

if (strlen(a)==1)
{
cout<<"Only 1 char!!"<
return true;
}

if (length<=0)
{
cout<<"String was blank!!"<
return false;
}


    while(j<= mid)
{
if (*(a+j) != *(a+length-j))
match = false;
j++;
}


  return match;
}


bool ExpressionMatch(char *a, char *b)
{
int lenA, lenB, i, j, indWld;
bool match = false, done = false;

lenA = strlen(a);
lenB = strlen(b);

i = j = indWld = 0;

    if ((lenA == 0) || (lenB == 0))
return false;


while (!done)
{
if (*(b + j) == '*')
{
j++;
indWld = j;
}
else if (*(b + j) == *(a+i))
{
match = true;
j++;
i++;
}
else if(*(b+j) != *(a+i))
{
i++;
match = false;
if (indWld == 0)
i = lenA;
else if (i< lenA)
j= indWld;
}
if (indWld == lenB)
{
done = true;
if (indWld == 1)
match = true;
}
if (i == lenA)
done = true;
}

return match;
}

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4) Java code to compute string LCM

import java.util.*;

import java.util.regex.*;

public class LCMstr {

/**

* @param args

*/

public static String lcm(String a, String b) {

int c = a.length();

int d = b.length();

if (a.charAt(c-1)==b.charAt(0)) {

return(a.concat(b.substring(1))); 

}

if (c >= d) {

    if (a.contains(b)) return a;

}

if (d > c) {

if (b.contains(a)) return b;

}

return a.concat(b);

//System.out.println(a.charAt(0));

//System.out.println("len" + c + a.charAt(c-1));

   //return "err";

}

public static void main(String[] args) {

LCMstr l = new LCMstr();

        System.out.println( l.lcm("ab", "bacd"));

        System.out.println( l.lcm("abcc", "cd"));

        System.out.println( l.lcm("ab", "bad"));

        System.out.println( l.lcm("aba", "abacd"));

        System.out.println(l.lcm("x1", "1x"));

        System.out.println(l.lcm("swati", "1swati"));

        System.out.println(l.lcm("swati1", "swati"));

        System.out.println(l.lcm("x1", "x2"));

        System.out.println(l.lcm("ab", "ab"));

}

}

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5) java code to compute LCM of two numbers:

public class myLCM {

private void calculateLCM(int x, int y) {

        int lcm = x*y/getGCD(x, y);

        System.out.println(lcm);

 }

private int getGCD(int x, int y) {

       // Make sure, n1 is the bigger number

       int n1 = x > y ? x : y;

       int n2 = x > y ? y : x;

       while(n1%n2 != 0) {

              int remainder = n1%n2;

              n1 = n2;

              n2 = remainder;

       }

       return n2;

}

    public static void main(String[] argv) {

        myLCM x = new myLCM();

        

        x.calculateLCM(2, 3);

        x.calculateLCM(8, 16);

        x.calculateLCM(3,15);

        //x.calculateLCM(10,0);

        x.calculateLCM(11,12);

        x.calculateLCM(15, 20);

        x.calculateLCM(17, 51);

 }

}

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