#include "curl_to_padded_string.h" int main() { auto result = curl_to_padded_string::load_url("https://httpbin.org/json"); if (result) { auto& padded = result.value(); // Now you can parse with simdjson // simdjson::ondemand::parser parser; // auto doc = parser.iterate(padded); // ... } else { std::cerr << "Error: " << result.error().what() << std::endl; } return 0; }

namespace curl_to_padded_string { std::expected<simdjson::padded_string> load_url(const std::string& url); }

/// @brief Get the actual payload size of a URL without downloading the full content. ///  /// This function performs a full request to determine the content size /// by using a write callback that counts bytes without storing them. ///  /// @param url The URL string to check (must be a valid HTTP/HTTPS URL). /// @return The size in bytes of the content at the URL, or 0 if the request fails /// or curl initialization fails. inline size_t get_actual_payload_size(const std::string& url); /// @brief Load the content of a URL into a padded string optimized for JSON parsing. ///  /// Downloads the full content from the URL and stores it in a simdjson padded_string, /// which provides the necessary padding for efficient SIMD JSON parsing. ///  /// @param url The URL string to load (must be a valid HTTP/HTTPS URL). /// @return An expected containing: /// - On success: A padded_string with the downloaded content /// - On failure: An unexpected with a runtime_error describing the issue inline std::expected<simdjson::padded_string, std::runtime_error> load_url(const std::string& url);