61 lines
1.8 KiB
C++
61 lines
1.8 KiB
C++
#include "json_util.h"
|
|
#include "esphome/core/log.h"
|
|
|
|
#ifdef USE_ESP8266
|
|
#include <Esp.h>
|
|
#endif
|
|
|
|
namespace esphome {
|
|
namespace json {
|
|
|
|
static const char *const TAG = "json";
|
|
|
|
static std::vector<char> global_json_build_buffer; // NOLINT
|
|
|
|
std::string build_json(const json_build_t &f) {
|
|
// Here we are allocating as much heap memory as available minus 2kb to be safe
|
|
// as we can not have a true dynamic sized document.
|
|
// The excess memory is freed below with `shrinkToFit()`
|
|
#ifdef USE_ESP8266
|
|
const size_t free_heap = ESP.getMaxFreeBlockSize() - 2048; // NOLINT(readability-static-accessed-through-instance)
|
|
#elif defined(USE_ESP32)
|
|
const size_t free_heap = heap_caps_get_largest_free_block(MALLOC_CAP_DEFAULT) - 2048;
|
|
#endif
|
|
|
|
DynamicJsonDocument json_document(free_heap);
|
|
JsonObject root = json_document.to<JsonObject>();
|
|
f(root);
|
|
json_document.shrinkToFit();
|
|
|
|
std::string output;
|
|
serializeJson(json_document, output);
|
|
return output;
|
|
}
|
|
|
|
void parse_json(const std::string &data, const json_parse_t &f) {
|
|
// Here we are allocating as much heap memory as available minus 2kb to be safe
|
|
// as we can not have a true dynamic sized document.
|
|
// The excess memory is freed below with `shrinkToFit()`
|
|
#ifdef USE_ESP8266
|
|
const size_t free_heap = ESP.getMaxFreeBlockSize() - 2048; // NOLINT(readability-static-accessed-through-instance)
|
|
#elif defined(USE_ESP32)
|
|
const size_t free_heap = heap_caps_get_largest_free_block(MALLOC_CAP_DEFAULT) - 2048;
|
|
#endif
|
|
|
|
DynamicJsonDocument json_document(free_heap);
|
|
DeserializationError err = deserializeJson(json_document, data);
|
|
json_document.shrinkToFit();
|
|
|
|
JsonObject root = json_document.as<JsonObject>();
|
|
|
|
if (err) {
|
|
ESP_LOGW(TAG, "Parsing JSON failed.");
|
|
return;
|
|
}
|
|
|
|
f(root);
|
|
}
|
|
|
|
} // namespace json
|
|
} // namespace esphome
|