Read HTML source to string

Question

I hope you don\'t frown on me too much, but this should be answerable by someone fairly easily. I want to read a file on a website into a string, so I can extract information fr

Answer 1

You need an HTTP Client library, one of many is libcurl. You would then issue a GET request to a URL and read the response back how ever your chosen library provides it.

Here is an example to get you started, it is C so I am sure you can work it out.

#include 
#include 

int main(void)
{
  CURL *curl;
  CURLcode res;

  curl = curl_easy_init();
  if(curl) {
    curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
    res = curl_easy_perform(curl);

    /* always cleanup */ 
    curl_easy_cleanup(curl);
  }
  return 0;
}

But you tagged this C++ so if you want a C++ wrapper for libcurl then use curlpp

#include 
#include 
#include 

using namespace curlpp::options;

int main(int, char **)
{
  try
  {
    // That's all that is needed to do cleanup of used resources
    curlpp::Cleanup myCleanup;

    // Our request to be sent.
    curlpp::Easy myRequest;

    // Set the URL.
    myRequest.setOpt("http://example.com");

    // Send request and get a result.
    // By default the result goes to standard output.
    myRequest.perform();
  }

  catch(curlpp::RuntimeError & e)
  {
    std::cout << e.what() << std::endl;
  }

  catch(curlpp::LogicError & e)
  {
    std::cout << e.what() << std::endl;
  }

  return 0;
}