forked from bblanchon/ArduinoJson
98 lines
2.5 KiB
C++
98 lines
2.5 KiB
C++
// Copyright Benoit Blanchon 2014
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// MIT License
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//
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// Arduino JSON library
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// https://github.com/bblanchon/ArduinoJson
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#include "../include/ArduinoJson/JsonObject.hpp"
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#include <string.h> // for strcmp
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#include "../include/ArduinoJson/Internals/PlacementNew.hpp"
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#include "../include/ArduinoJson/Internals/PrettyJsonWriter.hpp"
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#include "../include/ArduinoJson/Internals/StringBuilder.hpp"
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#include "../include/ArduinoJson/JsonArray.hpp"
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#include "../include/ArduinoJson/JsonBuffer.hpp"
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using namespace ArduinoJson;
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using namespace ArduinoJson::Internals;
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JsonObject JsonObject::_invalid(NULL);
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JsonVariant &JsonObject::at(const char *key) {
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node_type *node = getNodeAt(key);
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return node ? node->content.value : JsonVariant::invalid();
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}
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const JsonVariant &JsonObject::at(const char *key) const {
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node_type *node = getNodeAt(key);
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return node ? node->content.value : JsonVariant::invalid();
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}
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JsonVariant &JsonObject::operator[](const char *key) {
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node_type *node = getOrCreateNodeAt(key);
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return node ? node->content.value : JsonVariant::invalid();
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}
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void JsonObject::remove(char const *key) { removeNode(getNodeAt(key)); }
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JsonArray &JsonObject::createNestedArray(char const *key) {
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if (!_buffer) return JsonArray::invalid();
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JsonArray &array = _buffer->createArray();
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add(key, array);
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return array;
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}
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JsonObject &JsonObject::createNestedObject(const char *key) {
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if (!_buffer) return JsonObject::invalid();
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JsonObject &object = _buffer->createObject();
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add(key, object);
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return object;
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}
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JsonObject::node_type *JsonObject::getNodeAt(const char *key) const {
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for (node_type *node = _firstNode; node; node = node->next) {
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if (!strcmp(node->content.key, key)) return node;
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}
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return NULL;
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}
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JsonObject::node_type *JsonObject::getOrCreateNodeAt(const char *key) {
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node_type *existingNode = getNodeAt(key);
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if (existingNode) return existingNode;
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node_type *newNode = createNode();
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if (!newNode) return NULL;
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newNode->content.key = key;
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addNode(newNode);
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return newNode;
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}
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template <typename T>
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void JsonObject::writeTo(T &writer) const {
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node_type *node = _firstNode;
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if (node) {
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writer.beginObject();
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for (;;) {
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writer.writeString(node->content.key);
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writer.writeColon();
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node->content.value.writeTo(writer);
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node = node->next;
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if (!node) break;
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writer.writeComma();
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}
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writer.endObject();
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} else {
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writer.writeEmptyObject();
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}
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}
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template void JsonObject::writeTo(JsonWriter &writer) const;
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template void JsonObject::writeTo(PrettyJsonWriter &writer) const;
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