void
_SetPostOptions(const std::string& url,
const std::string& type,
const CurlOptions& options) {
CURLcode err;
err = curl_easy_setopt(handle_, CURLOPT_CUSTOMREQUEST, type.c_str());
_CheckError(err, "set request type");
_SetCommonOptions(url);
err = curl_easy_setopt(handle_, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
_CheckError(err, "set post redir");
std::ostringstream ostr;
for (auto const& opt :options) {
ostr << opt.first << '=' << opt.second << ';';
}
std::string opts (ostr.str());
if (! opts.empty()) {
err = curl_easy_setopt(handle_, CURLOPT_POST, 1L);
_CheckError(err, "set post");
err = curl_easy_setopt(handle_, CURLOPT_COPYPOSTFIELDS, opts.c_str());
_CheckError(err, "set copy post fields");
}
}
// OPERATIONS
std::string
Get(const std::string& url) {
_ResetHandle();
_SetGetOptions(url);
CURLcode err = curl_easy_perform(handle_);
_CheckError(err, "easy perform");
return write_stream_.str();
}
std::string
Set(const std::string& url,
const std::string& type,
const CurlOptions& options) {
_ResetHandle();
_SetPostOptions(url, type, options);
CURLcode err = curl_easy_perform(handle_);
_CheckError(err, "easy perform");
return write_stream_.str();
}
void
_SetCommonOptions(const std::string& url) {
// set url
CURLcode err = curl_easy_setopt(handle_, CURLOPT_URL, url.c_str());
_CheckError(err, "set url");
// Allow redirection
err = curl_easy_setopt(handle_, CURLOPT_FOLLOWLOCATION, 1L);
_CheckError(err, "set follow location");
// Clear write stream
write_stream_.str("");
write_stream_.clear();
// Set callback for write
err = curl_easy_setopt(handle_, CURLOPT_WRITEFUNCTION, _WriteCb);
_CheckError(err, "set write callback");
// Set callback data
err = curl_easy_setopt(handle_, CURLOPT_WRITEDATA, this);
_CheckError(err, "set write data");
if (enable_header_) {
// Get curl header
// clear existing header data
header_stream_.str("");
header_stream_.clear();
// Set header callback function
err = curl_easy_setopt(handle_, CURLOPT_HEADERFUNCTION, _HeaderCb);
_CheckError(err, "set header callback");
// Set header user data for callback function
err = curl_easy_setopt(handle_, CURLOPT_HEADERDATA, this);
_CheckError(err, "set header data");
}
// Set the user agent. Some servers requires this on requests
err = curl_easy_setopt(handle_, CURLOPT_USERAGENT, "libcurl-agent/1.0");
_CheckError(err, "set write data");
}
void _Parse(const std::string& json) {
document_.Parse(json.c_str());
_CheckError();
}
