Thread: String splitting algorithm help

Hi,

Theres probably a really simple way of doing this but i cant work it out :\.

I have a string which contains this sort of data: "group1\r\ngroup2\r\ngroup3\r\n..."

I'm using \r\n as the splitting characters, and extracting each substring into a vector array of strings, although i don't know if thats the best structure to use? I cant use a standard array, as i don't know the number of elements.

Anyway heres the code i have so far (probably complete rubbish)

glist is the string with the data.

Code:

        vector<string> group_list;
	int pos_a = 0;
	int pos_b = 0;
	
	for(int i = 0; i < glist.length(); i++)
	{
		pos_b = glist.find("\n", pos_b);
		
		string temp(glist.substr(pos_a, pos_b));
		group_list.push_back(temp);
		pos_a = pos_b + 1;
	}

I know thats fairly wrong, but im unsure how to disregard the \r\n characters completely?

Maybe i would be better converting it to a char array and working with that?

Thanks for any advice,
Jack

Sorry should have mentioned, the data is pulled in from a socket connection, i didnt choose to use the \r\n chars.

Thanks alot, how do i use stringsteams getline?

Im trying this

Code:

	stringstream MyStream;
	
	group_list.push_back(MyStream.getline(glist, glist.length()));

But im not having much luck.

http://www.boost.org/doc/html/string...html#id2541245
or
http://www.boost.org/libs/tokenizer/index.html