need to figure out a way to loop loop threw an array of 10 character pointers i think

[voidflux]

Hello everyone.

The only solution I can figure to solve my problem is to create an array of 10 character pointers.

I need to split up this domain: cse.psu.edu into 2 sub domains, cse and psu
and also into a top level domain, which is edu.

The max number of sub-domains allowed is 10
and the max length of each sub domain is 65.
So i figured somthing like char subDomain[10][65]
but now i can't figure how to store the domains in it and then check validation of each character.

I was thinking somthing liek:
[subdomain1]['\0']
[subdomain2][\0']
[....]
[subdomain10]['\0'];




I'm going to be reading files from a text file so the e-mails could be all of the following:

[email protected]
[email protected]
@psu.edu
psu.edu
max.fomitchev@
[email protected]
[email protected]
[email protected]
max@[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
max@home.
max@home
max @home.com
max@h ome.com
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
max#[email protected]
[email protected]
max%[email protected]
max"[email protected]
max:[email protected]
max>[email protected]
max<[email protected]
max([email protected]
max)[email protected]
max,[email protected]
max;[email protected]
max[[email protected]
max][email protected]
max\[email protected]
o'[email protected]
max|[email protected]
[email protected]
too-long-of-a-user-name-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa65@domain.com
user@too-long-of-a-domain-name-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa256.com

I already created a function that will parse the e-mails into a local part and a domain part.

Well currently my utlitiy functions only work for 1-dim character arrays, like my indexOf and GetLength, as well as my CopyTo functions...

Here is all my code:

bool IsSubDomainsValid(char *domain, char *subDomain, char *tld)
{



	// Make sure it contains at least one '.'
	if(IndexOf(subDomain,'.',0) == -1)
		return false;

	int subdomainCount = 0;

	int startPos = 0;
	//SubDomain[10][64];

	//0 < Length < 64
	//Must not begin or end with ‘-’

	//extract sub domains from domain
	
	do
	{
		int nextPos = IndexOf(domain,'.', startPos);
		if ( nextPos != -1 )
			CopyTo(startPos + 1, nextPos - startPos, domain, subDomain);

		else
			CopyTo(startPos + 1, nextPos - startPos, domain, tld);
			startPos = nextPos + 1;
	} while ( startPos != 0 );

	return true;
}

That is the function i'm writing to extract the sub domains from the domain. but you can see in this funciton call:

CopyTo(startPos + 1, nextPos - startPos, domain, tld);

domain is only a 1-dim char array, char * but this won't work in my case.

Here are my utlitiy functions:

#include "stdafx.h"
#include "util.h"



int GetLength(const char *text, int startPos)
{
	int size = 0;

	while( text[startPos] != '\0' )
	{
		size = size + 1;
		++startPos;
	}

	return size;
}

int IndexOf(const char *text, char aChar, int startPosition)
{
	for ( ; startPosition < GetLength(text); startPosition++ )
	{
		if(text[startPosition] == aChar)
			return startPosition;
	}
		return -1;		//no character found
}

void Copy(const char * source, char * destination, int length)
{
	for( int i = 0; i < length; i++ )
	{
		destination[i] = source[i];
	}
		destination[length] = '\0';
}


/*void CopyTo(int startPosition, int length, const char *source, char *destination)
{
	for(int i = 0; i < length; i++)
	{
		destination[i] = source[i];
	}
	destination[length] = '\0';
}*/
void CopyTo(int startPosition, int length, const char *source, char *destination)
{
	int i = 0;
	for(; i < length; i++)
	{
		destination[i] = source[startPosition++];
	}
	destination[i] = '\0';
}




void Print(char *source)
{
	for( int i = 0; i < GetLength(source); i++ )
	{
		std::cout << source[i];
	}
	std::cout << std::endl;
}

So what I need to do is modify my IndexOf function and CopyTo to handle a 2 dimensional character array i believe.... but everything i do isn't working...

void CopyTo(int startPosition, int length, const char *source, char **destination)
{
	int i = 0;
        int j = 0;

	for(; i < length; i++)
	{
              for(int  j < length; j++)
		     destination[i][j] = source[startPosition++];
	}
	destination[i][j] = '\0';
}

Can anyone think of a better way at handling this?
The reason I have to extract the sub domains and top level domains is becuase i hve to run the following checks on each sub domain and tld.
Make sure length < 7 and > 0
Make sure sub domains don't begin or end with a '-' character

I can't find any good tutorials that explain how to cycle threw a 2-dim character array and look at each element, if anyone knows of one and doesn't want to explain i'd be happy to read it.


thanks!