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Add Json parser based on code example found on:
http://stackoverflow.com/questions/4169988/easiest-way-to-parse-json-in-qt-4-7 p4#: 21634
This commit is contained in:
Vidar Lundberg
parent
dfd72c42a0
commit
ac832866e6
143
ApplicationCode/FileInterface/RifJsonEncodeDecode.cpp
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143
ApplicationCode/FileInterface/RifJsonEncodeDecode.cpp
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/////////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2011-2013 Statoil ASA, Ceetron AS
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//
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// ResInsight is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// ResInsight is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE.
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//
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// See the GNU General Public License at <http://www.gnu.org/licenses/gpl.html>
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// for more details.
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//
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/////////////////////////////////////////////////////////////////////////////////
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// Json parser based on code example found on:
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// http://stackoverflow.com/questions/4169988/easiest-way-to-parse-json-in-qt-4-7
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#include "RifJsonEncodeDecode.h"
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#include <QtCore/QFile>
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#include <QtCore/QString>
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#include <QtScript/QScriptEngine>
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#include <QtScript/QScriptValueIterator>
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QMap<QString, QVariant> JsonReader::decodeFile(QString filePath)
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{
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QFile file;
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file.setFileName(filePath);
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file.open(QIODevice::ReadOnly);
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QByteArray byteArray = file.readAll();
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file.close();
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QString jsonString(byteArray);
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Json json;
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return json.decode(jsonString);
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}
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#if IMPL_DUMP_TO_FILE
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void JsonReader::dumpToFile(std::vector<cvf::Vec3d>& points, QString filePath)
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{
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QFile file;
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file.setFileName(filePath);
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file.open(QIODevice::WriteOnly);
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for (size_t idx = 0; idx < points.size(); idx++)
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{
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cvf::Vec3d point = points[idx];
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QString string;
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string.sprintf("(%0.10e, %0.10e, %0.10e)\n", point.x(), point.y(), point.z());
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QByteArray byteArray(string.toAscii());
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file.write(byteArray);
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}
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file.close();
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}
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#endif
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QString Json::encode(const QMap<QString,QVariant> &map)
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{
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QScriptEngine engine;
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engine.evaluate("function toString() { return JSON.stringify(this) }");
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QScriptValue toString = engine.globalObject().property("toString");
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QScriptValue obj = encodeInner(map, &engine);
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return toString.call(obj).toString();
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}
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QMap<QString, QVariant> Json::decode(const QString &jsonStr)
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{
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QScriptValue object;
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QScriptEngine engine;
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object = engine.evaluate("(" + jsonStr + ")");
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return decodeInner(object);
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}
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QScriptValue Json::encodeInner(const QMap<QString,QVariant> &map, QScriptEngine* engine)
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{
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QScriptValue obj = engine->newObject();
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QMapIterator<QString, QVariant> i(map);
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while (i.hasNext()) {
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i.next();
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if (i.value().type() == QVariant::String)
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obj.setProperty(i.key(), i.value().toString());
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else if (i.value().type() == QVariant::Int)
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obj.setProperty(i.key(), i.value().toInt());
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else if (i.value().type() == QVariant::Double)
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obj.setProperty(i.key(), i.value().toDouble());
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else if (i.value().type() == QVariant::List)
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obj.setProperty(i.key(), qScriptValueFromSequence(engine, i.value().toList()));
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else if (i.value().type() == QVariant::Map)
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obj.setProperty(i.key(), encodeInner(i.value().toMap(), engine));
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}
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return obj;
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}
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QMap<QString, QVariant> Json::decodeInner(QScriptValue object)
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{
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QMap<QString, QVariant> map;
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QScriptValueIterator it(object);
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while (it.hasNext()) {
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it.next();
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if (it.value().isArray())
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map.insert(it.name(),QVariant(decodeInnerToList(it.value())));
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else if (it.value().isNumber())
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map.insert(it.name(),QVariant(it.value().toNumber()));
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else if (it.value().isString())
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map.insert(it.name(),QVariant(it.value().toString()));
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else if (it.value().isNull())
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map.insert(it.name(),QVariant());
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else if(it.value().isObject())
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map.insert(it.name(),QVariant(decodeInner(it.value())));
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}
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return map;
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}
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QList<QVariant> Json::decodeInnerToList(QScriptValue arrayValue)
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{
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QList<QVariant> list;
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QScriptValueIterator it(arrayValue);
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while (it.hasNext()) {
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it.next();
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if (it.name() == "length")
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continue;
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if (it.value().isArray())
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list.append(QVariant(decodeInnerToList(it.value())));
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else if (it.value().isNumber())
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list.append(QVariant(it.value().toNumber()));
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else if (it.value().isString())
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list.append(QVariant(it.value().toString()));
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else if (it.value().isNull())
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list.append(QVariant());
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else if(it.value().isObject())
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list.append(QVariant(decodeInner(it.value())));
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}
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return list;
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}
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58
ApplicationCode/FileInterface/RifJsonEncodeDecode.h
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58
ApplicationCode/FileInterface/RifJsonEncodeDecode.h
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@ -0,0 +1,58 @@
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/////////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2011-2013 Statoil ASA, Ceetron AS
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//
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// ResInsight is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// ResInsight is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE.
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//
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// See the GNU General Public License at <http://www.gnu.org/licenses/gpl.html>
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// for more details.
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//
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/////////////////////////////////////////////////////////////////////////////////
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// Json parser based on code example found on:
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// http://stackoverflow.com/questions/4169988/easiest-way-to-parse-json-in-qt-4-7
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//#define IMPL_DUMP_TO_FILE
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#include <QtCore/QVariant>
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#include <QtCore/QMap>
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#include <QtCore/QList>
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#include <QtCore/QString>
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#include <QtScript/QScriptValue>
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#if IMPL_DUMP_TO_FILE
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#include <vector>
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#include <cvfVector3.h>
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#endif
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class QScriptEngine;
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class JsonReader
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{
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public:
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QMap<QString, QVariant> decodeFile(QString filePath);
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#if IMPL_DUMP_TO_FILE
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void dumpToFile(std::vector<cvf::Vec3d>& points, QString filePath);
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#endif
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};
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class Json
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{
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public:
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Json() {};
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QString encode(const QMap<QString,QVariant> &map);
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QMap<QString, QVariant> decode(const QString &jsonStr);
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private:
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QScriptValue encodeInner(const QMap<QString,QVariant> &map, QScriptEngine* engine);
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QMap<QString, QVariant> decodeInner(QScriptValue object);
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QList<QVariant> decodeInnerToList(QScriptValue arrayValue);
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};
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