odm/include/curlfuncs.h

#pragma once
#include "MString.h"
#include <curl/curl.h>
#include <memory>

using michlib::MString;

class CURLRAIIDT
{
 public:
 // TODO: make static
 void operator()(CURL* c) { curl_easy_cleanup(c); }
};

class CURLRAII: public std::unique_ptr<CURL, CURLRAIIDT>
{
 char err[CURL_ERROR_SIZE];

 public:
 CURLRAII()
 {
  reset(curl_easy_init());
  curl_easy_setopt(*this, CURLOPT_ERRORBUFFER, err);
 }
 operator CURL*() const { return get(); }
 const char* Err() const { return err; }
};

// Curl writeback function, write to MString
size_t Write2String(char* ptr, size_t size, size_t n, void* data);

// Curl writeback function, write to file descriptor
size_t Write2File(char* ptr, size_t size, size_t n, void* data);

// Get content of url to MString
std::pair<MString, CURLcode> GetUrl(const CURLRAII& chandle, const MString& url);