echo_format.hpp

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/*
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 |  _| / __| '_ \ / _ \| |_ / _ \| '__| '_ ` _ \ / _` | __|
 | |__| (__| | | | (_) |  _| (_) | |  | | | | | | (_| | |_
 |_____\___|_| |_|\___/|_|  \___/|_|  |_| |_| |_|\__,_|\__|
 
Pure, ZMQ/Agent-free rendering of one received `mads echo` message: pretty
(optionally rang-colored) multi-line JSON or a one-line blob summary, or a
single compact JSON line (`--jsonl`) of either. Factored out of
src/main/echo.cpp so the exact formatting logic the executable prints is
directly callable (and testable) without spawning a subprocess -- see
tests/test_echo_loopback.cpp.
 
Author(s): Paolo Bosetti
*/
#pragma once
 
#include <cstddef>
#include <string>
 
#include <nlohmann/json.hpp>
 
namespace Mads {
 
struct EchoRenderOptions {
  bool raw = false;
  bool jsonl = false;
  bool color = true;
};
 
std::string format_echo_json(const std::string &topic,
                             const nlohmann::json &payload, size_t wire_size,
                             const EchoRenderOptions &opts);
 
std::string format_echo_blob(const std::string &topic,
                             const std::string &format,
                             const unsigned char *data, size_t len,
                             const EchoRenderOptions &opts);
 
std::string base64_encode(const unsigned char *data, size_t len);
 
} // namespace Mads