Question

I have a file, each line holds a .

<div style="random properties" id="keyword1:string id:int">text</div>
<div style="random properties" id="keyword1:string id:int">text</div>
<div style="random properties" id="keyword2:string id:int">text</div>
<div style="random properties" id="keyword2:string id:int">text</div>

Can i with fscanf return a list of text and id for a matching keyword1 and keyword2?

Answer 1

You can simply read it with regex:

std::string s;
std::regex r( "<div style=\"[^\"]*\" id=\".*(\\d+)\">((?:(?!</div>).)*)</div>" );
while( std::getline(in, s) ) {
    std::smatch m;
    if( std::regex_match(s, m, r) ) {
        std::cout << "id = " << m.str(1) << ", text = " << m.str(2) << std::endl;
    } else {
        std::cout << "invalid pattern" << std::endl;
    }
}

But if you want to read more about regex please go to http://en.cppreference.com/w/cpp/regex