Merge branch 'master' into kitsune-gtad

1 files changed, 177 insertions, 0 deletions

diff --git a/lib/converters.h b/lib/converters.h
new file mode 100644
index 00000000..bba298e0
--- /dev/null
+++ b/lib/converters.h
@@ -0,0 +1,177 @@
+/******************************************************************************
+* Copyright (C) 2017 Kitsune Ral <kitsune-ral@users.sf.net>
+*
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation; either
+* version 2.1 of the License, or (at your option) any later version.
+*
+* This library is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+* Lesser General Public License for more details.
+*
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#pragma once
+
+#include <QtCore/QJsonObject>
+#include <QtCore/QJsonArray> // Includes <QtCore/QJsonValue>
+#include <QtCore/QDate>
+
+namespace QMatrixClient
+{
+    // This catches anything implicitly convertible to QJsonValue/Object/Array
+    inline QJsonValue toJson(const QJsonValue& val) { return val; }
+    inline QJsonObject toJson(const QJsonObject& o) { return o; }
+    inline QJsonArray toJson(const QJsonArray& arr) { return arr; }
+#ifdef _MSC_VER // MSVC gets lost and doesn't know which overload to use
+    inline QJsonValue toJson(const QString& s) { return s; }
+#endif
+
+    template <typename T>
+    inline QJsonArray toJson(const QVector<T>& vals)
+    {
+        QJsonArray ar;
+        for (const auto& v: vals)
+            ar.push_back(toJson(v));
+        return ar;
+    }
+
+    inline QJsonArray toJson(const QStringList& strings)
+    {
+        return QJsonArray::fromStringList(strings);
+    }
+
+    inline QJsonValue toJson(const QByteArray& bytes)
+    {
+        return QJsonValue(bytes.constData());
+    }
+
+    template <typename T>
+    inline QJsonObject toJson(const QHash<QString, T>& hashMap)
+    {
+        QJsonObject json;
+        for (auto it = hashMap.begin(); it != hashMap.end(); ++it)
+            json.insert(it.key(), toJson(it.value()));
+        return json;
+    }
+
+    template <typename T>
+    struct FromJson
+    {
+        T operator()(const QJsonValue& jv) const { return static_cast<T>(jv); }
+    };
+
+    template <typename T>
+    inline T fromJson(const QJsonValue& jv)
+    {
+        return FromJson<T>()(jv);
+    }
+
+    template <> struct FromJson<bool>
+    {
+        bool operator()(const QJsonValue& jv) const { return jv.toBool(); }
+    };
+
+    template <> struct FromJson<int>
+    {
+        int operator()(const QJsonValue& jv) const { return jv.toInt(); }
+    };
+
+    template <> struct FromJson<double>
+    {
+        double operator()(const QJsonValue& jv) const { return jv.toDouble(); }
+    };
+
+    template <> struct FromJson<qint64>
+    {
+        qint64 operator()(const QJsonValue& jv) const { return qint64(jv.toDouble()); }
+    };
+
+    template <> struct FromJson<QString>
+    {
+        QString operator()(const QJsonValue& jv) const { return jv.toString(); }
+    };
+
+    template <> struct FromJson<QDateTime>
+    {
+        QDateTime operator()(const QJsonValue& jv) const
+        {
+            return QDateTime::fromMSecsSinceEpoch(fromJson<qint64>(jv), Qt::UTC);
+        }
+    };
+
+    template <> struct FromJson<QDate>
+    {
+        QDate operator()(const QJsonValue& jv) const
+        {
+            return fromJson<QDateTime>(jv).date();
+        }
+    };
+
+    template <> struct FromJson<QJsonObject>
+    {
+        QJsonObject operator()(const QJsonValue& jv) const
+        {
+            return jv.toObject();
+        }
+    };
+
+    template <> struct FromJson<QJsonArray>
+    {
+        QJsonArray operator()(const QJsonValue& jv) const
+        {
+            return jv.toArray();
+        }
+    };
+
+    template <typename T> struct FromJson<QVector<T>>
+    {
+        QVector<T> operator()(const QJsonValue& jv) const
+        {
+            const auto jsonArray = jv.toArray();
+            QVector<T> vect; vect.resize(jsonArray.size());
+            std::transform(jsonArray.begin(), jsonArray.end(),
+                           vect.begin(), FromJson<T>());
+            return vect;
+        }
+    };
+
+    template <typename T> struct FromJson<QList<T>>
+    {
+        QList<T> operator()(const QJsonValue& jv) const
+        {
+            const auto jsonArray = jv.toArray();
+            QList<T> sl; sl.reserve(jsonArray.size());
+            std::transform(jsonArray.begin(), jsonArray.end(),
+                           std::back_inserter(sl), FromJson<T>());
+            return sl;
+        }
+    };
+
+    template <> struct FromJson<QStringList> : FromJson<QList<QString>> { };
+
+    template <> struct FromJson<QByteArray>
+    {
+        inline QByteArray operator()(const QJsonValue& jv) const
+        {
+            return fromJson<QString>(jv).toLatin1();
+        }
+    };
+
+    template <typename T> struct FromJson<QHash<QString, T>>
+    {
+        QHash<QString, T> operator()(const QJsonValue& jv) const
+        {
+            const auto json = jv.toObject();
+            QHash<QString, T> h; h.reserve(json.size());
+            for (auto it = json.begin(); it != json.end(); ++it)
+                h.insert(it.key(), fromJson<T>(it.value()));
+            return h;
+        }
+    };
+}  // namespace QMatrixClient