RegEx Split function dies.

6 May 2003

      Hi- 

I am attempting to parse email headers using the boost regex library.
 I would 
prefer that each email address in the TO field (delimited by a comma)
would be 
placed into a vector<string>. 

Currently, I am able to obtain the entire to line (all the to
addresses).  I can use 
another regular expression to seperate it out but I'd rather do it
all in one.  However, 
If I try to add another more to this I get an exception: 

"Max regex search depth exceeded." 

I am assuming that this is because I've created a infinite loop.  I'm
not sure how to 
extend this expression to place every email address in the vector
seperatly. 

Thanks 

here's my code snippet: 

	char * expression_text =  
		//Any possible leading whitespace: 
		"^[ ]*" 
		//The "To" field name in any case: 
		"TO" 
		//Any more whitespace: 
		"[ ]*" 
		//Then a colon: 
		":" 
		//More white space potentially 
		"[ ]*" 
		//Everything here is an address up to "\r\n"; 
		"([-@_\\.\"<>A-Za-z0-9]+),?"; 

	//Create the expression class to use: 
	RegEx expression(expression_text, true); 

	//Attempt to grep the mail_buffer: 
	int num_recv = 0; 
	try { 
		num_recv = expression.Split(to, mail_buffer); 
	} 
	catch (...){ 
		//throw some exception 
	} 
}

RegEx Split function dies.

tfandango