ResInsight/ApplicationCode/FileInterface/RifJsonEncodeDecode.cpp

146 lines
4.7 KiB
C++

/////////////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2011-2013 Statoil ASA, Ceetron AS
//
// ResInsight is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// ResInsight 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 General Public License at <http://www.gnu.org/licenses/gpl.html>
// for more details.
//
/////////////////////////////////////////////////////////////////////////////////
// Json parser based on code example found on:
// http://stackoverflow.com/questions/4169988/easiest-way-to-parse-json-in-qt-4-7
#include "RifJsonEncodeDecode.h"
#include <QtCore/QFile>
#include <QtCore/QString>
#include <QtScript/QScriptEngine>
#include <QtScript/QScriptValueIterator>
namespace ResInsightInternalJson {
QMap<QString, QVariant> JsonReader::decodeFile(QString filePath)
{
QFile file;
file.setFileName(filePath);
file.open(QIODevice::ReadOnly);
QByteArray byteArray = file.readAll();
file.close();
QString jsonString(byteArray);
Json json;
return json.decode(jsonString);
}
#if IMPL_DUMP_TO_FILE
void JsonReader::dumpToFile(std::vector<cvf::Vec3d>& points, QString filePath)
{
QFile file;
file.setFileName(filePath);
file.open(QIODevice::WriteOnly);
for (size_t idx = 0; idx < points.size(); idx++)
{
cvf::Vec3d point = points[idx];
QString string;
string.sprintf("(%0.10e, %0.10e, %0.10e)\n", point.x(), point.y(), point.z());
QByteArray byteArray(string.toAscii());
file.write(byteArray);
}
file.close();
}
#endif
QString Json::encode(const QMap<QString,QVariant> &map)
{
QScriptEngine engine;
engine.evaluate("function toString() { return JSON.stringify(this) }");
QScriptValue toString = engine.globalObject().property("toString");
QScriptValue obj = encodeInner(map, &engine);
return toString.call(obj).toString();
}
QMap<QString, QVariant> Json::decode(const QString &jsonStr)
{
QScriptValue object;
QScriptEngine engine;
object = engine.evaluate("(" + jsonStr + ")");
return decodeInner(object);
}
QScriptValue Json::encodeInner(const QMap<QString,QVariant> &map, QScriptEngine* engine)
{
QScriptValue obj = engine->newObject();
QMapIterator<QString, QVariant> i(map);
while (i.hasNext()) {
i.next();
if (i.value().type() == QVariant::String)
obj.setProperty(i.key(), i.value().toString());
else if (i.value().type() == QVariant::Int)
obj.setProperty(i.key(), i.value().toInt());
else if (i.value().type() == QVariant::Double)
obj.setProperty(i.key(), i.value().toDouble());
else if (i.value().type() == QVariant::List)
obj.setProperty(i.key(), qScriptValueFromSequence(engine, i.value().toList()));
else if (i.value().type() == QVariant::Map)
obj.setProperty(i.key(), encodeInner(i.value().toMap(), engine));
}
return obj;
}
QMap<QString, QVariant> Json::decodeInner(QScriptValue object)
{
QMap<QString, QVariant> map;
QScriptValueIterator it(object);
while (it.hasNext()) {
it.next();
if (it.value().isArray())
map.insert(it.name(),QVariant(decodeInnerToList(it.value())));
else if (it.value().isNumber())
map.insert(it.name(),QVariant(it.value().toNumber()));
else if (it.value().isString())
map.insert(it.name(),QVariant(it.value().toString()));
else if (it.value().isNull())
map.insert(it.name(),QVariant());
else if(it.value().isObject())
map.insert(it.name(),QVariant(decodeInner(it.value())));
}
return map;
}
QList<QVariant> Json::decodeInnerToList(QScriptValue arrayValue)
{
QList<QVariant> list;
QScriptValueIterator it(arrayValue);
while (it.hasNext()) {
it.next();
if (it.name() == "length")
continue;
if (it.value().isArray())
list.append(QVariant(decodeInnerToList(it.value())));
else if (it.value().isNumber())
list.append(QVariant(it.value().toNumber()));
else if (it.value().isString())
list.append(QVariant(it.value().toString()));
else if (it.value().isNull())
list.append(QVariant());
else if(it.value().isObject())
list.append(QVariant(decodeInner(it.value())));
}
return list;
}
} // end ResInsightInternalJson