Standard C++ method for validating a URLs format?

Question

Is there a easy standards-compliant way to check if a URL string is a valid format? Either through a specific URL-type class or maybe someone could show me how to do a regex validation of it?

Answer 1

As others have answered, there is no URL parsing or validation code in the C++ Standard Library nor in STL. Neither is there regular expression parsing.

The first place to look for a solved problem is Boost! Boost.Regex should have you on your way. And this answer has a great URL regular expression.

Answer 2

Is there a easy standards-compliant way to check if a URL string is a valid format?

There's nothing in the standard library.

Answer 3

Nope, there isn't one.

On windows, you could take a look at the IsValidURL() function

Answer 4

You can use the Poco library: https://pocoproject.org/docs/Poco.URI.html

Here is my use of it as a URL validator:

bool validateUrl(std::string u){
    try {
        Poco::URI uri(u);
    }
    catch (Poco::SyntaxException &e){
        return false;
    }
    return true;
}