Add JSON class
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250
src/ATBAPP/support/JSON.h
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250
src/ATBAPP/support/JSON.h
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#ifndef JSON_H
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#define JSON_H
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#include <QVariant>
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#include <QString>
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#include <QQueue>
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/**********************************************
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* based on: https://github.com/qt-json/qt-json
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*/
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/**
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* \namespace JSON
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* \brief A JSON data parser
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*
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* Json parses a JSON data into a QVariant hierarchy.
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*/
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namespace JSON {
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typedef QVariantMap JsonObject;
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typedef QVariantList JsonArray;
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/**
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* Clone a JSON object (makes a deep copy)
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*
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* \param data The JSON object
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*/
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QVariant clone(const QVariant &data);
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/**
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* Insert value to JSON object (QVariantMap)
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*
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* \param v The JSON object
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* \param key The key
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* \param value The value
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*/
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void insert(QVariant &v, const QString &key, const QVariant &value);
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/**
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* Append value to JSON array (QVariantList)
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*
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* \param v The JSON array
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* \param value The value
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*/
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void append(QVariant &v, const QVariant &value);
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/**
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* Parse a JSON string
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*
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* \param json The JSON data
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*/
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QVariant parse(const QString &json);
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/**
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* Parse a JSON string
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*
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* \param json The JSON data
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* \param success The success of the parsing
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*/
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QVariant parse(const QString &json, bool &success);
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/**
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* This method generates a textual JSON representation
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*
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* \param data The JSON data generated by the parser.
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*
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* \return QByteArray Textual JSON representation in UTF-8
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*/
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QByteArray serialize(const QVariant &data);
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/**
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* This method generates a textual JSON representation
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*
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* \param data The JSON data generated by the parser.
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* \param success The success of the serialization
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*
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* \return QByteArray Textual JSON representation in UTF-8
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*/
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QByteArray serialize(const QVariant &data, bool &success, int _level = 0);
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/**
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* This method generates a textual JSON representation
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*
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* \param data The JSON data generated by the parser.
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*
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* \return QString Textual JSON representation
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*/
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QString serializeStr(const QVariant &data);
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/**
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* This method generates a textual JSON representation
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*
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* \param data The JSON data generated by the parser.
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* \param success The success of the serialization
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*
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* \return QString Textual JSON representation
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*/
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QString serializeStr(const QVariant &data, bool &success, int _level = 0);
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/**
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* This method sets date(time) format to be used for QDateTime::toString
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* If QString is empty, Qt::TextDate is used.
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*
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* \param format The JSON data generated by the parser.
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*/
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void setDateTimeFormat(const QString& format);
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void setDateFormat(const QString& format);
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/**
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* This method gets date(time) format to be used for QDateTime::toString
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* If QString is empty, Qt::TextDate is used.
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*/
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QString getDateTimeFormat();
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QString getDateFormat();
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/**
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* @brief setPrettySerialize enable/disabled pretty-print when serialize() a json
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* @param enabled
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*/
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void setPrettySerialize(bool enabled);
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/**
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* @brief isPrettySerialize check if is enabled pretty-print when serialize() a json
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* @return
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*/
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bool isPrettySerialize();
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/**
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* QVariant based Json object
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*/
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class Object : public QVariant {
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template<typename T>
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Object& insertKey(Object* ptr, const QString& key) {
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T* p = (T*)ptr->data();
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if (!p->contains(key)) p->insert(key, QVariant());
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return *reinterpret_cast<Object*>(&p->operator[](key));
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}
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template<typename T>
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void removeKey(Object *ptr, const QString& key) {
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T* p = (T*)ptr->data();
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p->remove(key);
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}
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public:
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Object() : QVariant() {}
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Object(const Object& ref) : QVariant(ref) {}
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Object& operator=(const QVariant& rhs) {
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/** It maybe more robust when running under Qt versions below 4.7 */
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QObject * obj = qvariant_cast<QObject *>(rhs);
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// setValue(rhs);
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setValue(obj);
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return *this;
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}
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Object& operator[](const QString& key) {
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if (type() == QVariant::Map)
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return insertKey<QVariantMap>(this, key);
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else if (type() == QVariant::Hash)
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return insertKey<QVariantHash>(this, key);
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setValue(QVariantMap());
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return insertKey<QVariantMap>(this, key);
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}
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const Object& operator[](const QString& key) const {
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return const_cast<Object*>(this)->operator[](key);
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}
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void remove(const QString& key) {
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if (type() == QVariant::Map)
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removeKey<QVariantMap>(this, key);
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else if (type() == QVariant::Hash)
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removeKey<QVariantHash>(this, key);
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}
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};
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class BuilderJsonArray;
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/**
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* @brief The BuilderJsonObject class
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*/
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class BuilderJsonObject {
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public:
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BuilderJsonObject();
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BuilderJsonObject(JsonObject &json);
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BuilderJsonObject *set(const QString &key, const QVariant &value);
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BuilderJsonObject *set(const QString &key, BuilderJsonObject *builder);
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BuilderJsonObject *set(const QString &key, BuilderJsonArray *builder);
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JsonObject create();
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private:
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static QQueue<BuilderJsonObject *> created_list;
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JsonObject obj;
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};
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/**
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* @brief The BuilderJsonArray class
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*/
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class BuilderJsonArray {
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public:
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BuilderJsonArray();
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BuilderJsonArray(JsonArray &json);
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BuilderJsonArray *add(const QVariant &element);
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BuilderJsonArray *add(BuilderJsonObject *builder);
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BuilderJsonArray *add(BuilderJsonArray *builder);
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JsonArray create();
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private:
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static QQueue<BuilderJsonArray *> created_list;
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JsonArray array;
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};
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/**
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* @brief Create a BuilderJsonObject
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* @return
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*/
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BuilderJsonObject *objectBuilder();
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/**
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* @brief Create a BuilderJsonObject starting from copy of another json
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* @return
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*/
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BuilderJsonObject *objectBuilder(JsonObject &json);
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/**
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* @brief Create a BuilderJsonArray
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* @return
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*/
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BuilderJsonArray *arrayBuilder();
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/**
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* @brief Create a BuilderJsonArray starting from copy of another json
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* @return
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*/
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BuilderJsonArray *arrayBuilder(JsonArray &json);
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}
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#endif // JSON_H
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