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Converted PriceUpdater from QScriptEngine to Qt-Json. I don't feel comfortable running unchecked JS code from an external source.

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This commit is contained in:
Max-Wilhelm Bruker 2012-06-03 20:16:12 +02:00
parent 50f7560033
commit 25b97d1e56
7 changed files with 964 additions and 25 deletions
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2
cockatrice/CMakeLists.txt
View file

@ -77,6 +77,7 @@ SET(cockatrice_SOURCES
src/localserverinterface.cpp
src/localclient.cpp
src/priceupdater.cpp
src/qt-json/json.cpp
src/soundengine.cpp
${CMAKE_CURRENT_BINARY_DIR}/version_string.cpp
)
@ -194,7 +195,6 @@ if(APPLE)
set(cockatrice_SOURCES ${cockatrice_SOURCES} ${CMAKE_CURRENT_SOURCE_DIR}/resources/appicon.icns)
ENDIF(APPLE)
SET(QT_USE_QTNETWORK TRUE)
SET(QT_USE_QTSCRIPT TRUE)
SET(QT_USE_QTMULTIMEDIA TRUE)
SET(QT_USE_QTXML TRUE)
SET(QT_USE_QTSVG TRUE)

31
cockatrice/src/priceupdater.cpp
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@ -1,12 +1,11 @@
/**
* @author Marcio Ribeiro <mmr@b1n.org>
* @version 1.0
* @author Marcio Ribeiro <mmr@b1n.org>, Max-Wilhelm Bruker <brukie@gmx.net>
* @version 1.1
*/
#include <QNetworkAccessManager>
#include <QNetworkReply>
#include <QScriptEngine>
#include <QScriptValueIterator>
#include "qt-json/json.h"
#include "priceupdater.h"
/**
@ -41,26 +40,24 @@ void PriceUpdater::updatePrices()
*/
void PriceUpdater::downloadFinished()
{
QNetworkReply *reply = static_cast<QNetworkReply *>(sender());
QByteArray result = reply->readAll();
QScriptValue sc;
QScriptEngine engine;
sc = engine.evaluate("value = " + result);
bool ok;
QVariantMap resultMap = QtJson::Json::parse(QString(reply->readAll()), ok).toMap();
if (!ok) {
reply->deleteLater();
deleteLater();
return;
}
QMap<QString, float> cardsPrice;
if (sc.property("cards").isArray()) {
QScriptValueIterator it(sc.property("cards"));
QListIterator<QVariant> it(resultMap.value("cards").toList());
while (it.hasNext()) {
it.next();
QString name = it.value().property("name").toString().toLower();
float price = it.value().property("average").toString().toFloat();
QVariantMap map = it.next().toMap();
QString name = map.value("name").toString().toLower();
float price = map.value("average").toString().toFloat();
cardsPrice.insert(name, price);
}
}
InnerDecklistNode *listRoot = deck->getRoot();
for (int i = 0; i < listRoot->size(); i++) {

3
cockatrice/src/qt-json/AUTHORS Normal file
View file

@ -0,0 +1,3 @@
Eeli Reilin <eeli@emicode.fi>
Luis Gustavo S. Barreto <gustavosbarreto@gmail.com>
Stephen Kockentiedt <Stephen@Kockentiedt.name>

27
cockatrice/src/qt-json/LICENSE Normal file
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@ -0,0 +1,27 @@
Copyright 2011 Eeli Reilin. All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY <COPYRIGHT HOLDER> ''AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
EVENT SHALL EELI REILIN OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
The views and conclusions contained in the software and documentation
are those of the authors and should not be interpreted as representing
official policies, either expressed or implied, of Eeli Reilin.

96
cockatrice/src/qt-json/README Normal file
View file

@ -0,0 +1,96 @@
########################################################################
1. INTRODUCTION
The Json class is a simple class for parsing JSON data into a QVariant
hierarchies. Now, we can also reverse the process and serialize
QVariant hierarchies into valid JSON data.
########################################################################
2. HOW TO USE
The parser is really easy to use. Let's say we have the following
QString of JSON data:
------------------------------------------------------------------------
{
"encoding" : "UTF-8",
"plug-ins" : [
"python",
"c++",
"ruby"
],
"indent" : {
"length" : 3,
"use_space" : true
}
}
------------------------------------------------------------------------
We would first call the parse-method:
------------------------------------------------------------------------
//Say that we're using the QtJson namespace
using namespace QtJson;
bool ok;
//json is a QString containing the JSON data
QVariantMap result = Json::parse(json, ok).toMap();
if(!ok) {
qFatal("An error occurred during parsing");
exit(1);
}
------------------------------------------------------------------------
Assuming the parsing process completed without errors, we would then
go through the hierarchy:
------------------------------------------------------------------------
qDebug() << "encoding:" << result["encoding"].toString();
qDebug() << "plugins:";
foreach(QVariant plugin, result["plug-ins"].toList()) {
qDebug() << "\t-" << plugin.toString();
}
QVariantMap nestedMap = result["indent"].toMap();
qDebug() << "length:" << nestedMap["length"].toInt();
qDebug() << "use_space:" << nestedMap["use_space"].toBool();
------------------------------------------------------------------------
The previous code would print out the following:
------------------------------------------------------------------------
encoding: "UTF-8"
plugins:
- "python"
- "c++"
- "ruby"
length: 3
use_space: true
------------------------------------------------------------------------
To write JSON data from Qt object is as simple as parsing:
------------------------------------------------------------------------
QVariantMap map;
map["name"] = "Name";
map["age"] = 22;
QByteArray data = Json::serialize(map);
------------------------------------------------------------------------
The byte array 'data' contains valid JSON data:
------------------------------------------------------------------------
{
name: "Luis Gustavo",
age: 22,
}
------------------------------------------------------------------------
########################################################################
4. CONTRIBUTING
The code is available to download at GitHub. Contribute if you dare!

612
cockatrice/src/qt-json/json.cpp Normal file
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@ -0,0 +1,612 @@
/* Copyright 2011 Eeli Reilin. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY <COPYRIGHT HOLDER> ''AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL EELI REILIN OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation
* are those of the authors and should not be interpreted as representing
* official policies, either expressed or implied, of Eeli Reilin.
*/
/**
* \file json.cpp
*/
#include "json.h"
#include <iostream>
namespace QtJson
{
static QString sanitizeString(QString str)
{
str.replace(QLatin1String("\\"), QLatin1String("\\\\"));
str.replace(QLatin1String("\""), QLatin1String("\\\""));
str.replace(QLatin1String("\b"), QLatin1String("\\b"));
str.replace(QLatin1String("\f"), QLatin1String("\\f"));
str.replace(QLatin1String("\n"), QLatin1String("\\n"));
str.replace(QLatin1String("\r"), QLatin1String("\\r"));
str.replace(QLatin1String("\t"), QLatin1String("\\t"));
return QString(QLatin1String("\"%1\"")).arg(str);
}
static QByteArray join(const QList<QByteArray> &list, const QByteArray &sep)
{
QByteArray res;
Q_FOREACH(const QByteArray &i, list)
{
if(!res.isEmpty())
{
res += sep;
}
res += i;
}
return res;
}
/**
* parse
*/
QVariant Json::parse(const QString &json)
{
bool success = true;
return Json::parse(json, success);
}
/**
* parse
*/
QVariant Json::parse(const QString &json, bool &success)
{
success = true;
//Return an empty QVariant if the JSON data is either null or empty
if(!json.isNull() || !json.isEmpty())
{
QString data = json;
//We'll start from index 0
int index = 0;
//Parse the first value
QVariant value = Json::parseValue(data, index, success);
//Return the parsed value
return value;
}
else
{
//Return the empty QVariant
return QVariant();
}
}
QByteArray Json::serialize(const QVariant &data)
{
bool success = true;
return Json::serialize(data, success);
}
QByteArray Json::serialize(const QVariant &data, bool &success)
{
QByteArray str;
success = true;
if(!data.isValid()) // invalid or null?
{
str = "null";
}
else if((data.type() == QVariant::List) || (data.type() == QVariant::StringList)) // variant is a list?
{
QList<QByteArray> values;
const QVariantList list = data.toList();
Q_FOREACH(const QVariant& v, list)
{
QByteArray serializedValue = serialize(v);
if(serializedValue.isNull())
{
success = false;
break;
}
values << serializedValue;
}
str = "[ " + join( values, ", " ) + " ]";
}
else if(data.type() == QVariant::Hash) // variant is a hash?
{
const QVariantHash vhash = data.toHash();
QHashIterator<QString, QVariant> it( vhash );
str = "{ ";
QList<QByteArray> pairs;
while(it.hasNext())
{
it.next();
QByteArray serializedValue = serialize(it.value());
if(serializedValue.isNull())
{
success = false;
break;
}
pairs << sanitizeString(it.key()).toUtf8() + " : " + serializedValue;
}
str += join(pairs, ", ");
str += " }";
}
else if(data.type() == QVariant::Map) // variant is a map?
{
const QVariantMap vmap = data.toMap();
QMapIterator<QString, QVariant> it( vmap );
str = "{ ";
QList<QByteArray> pairs;
while(it.hasNext())
{
it.next();
QByteArray serializedValue = serialize(it.value());
if(serializedValue.isNull())
{
success = false;
break;
}
pairs << sanitizeString(it.key()).toUtf8() + " : " + serializedValue;
}
str += join(pairs, ", ");
str += " }";
}
else if((data.type() == QVariant::String) || (data.type() == QVariant::ByteArray)) // a string or a byte array?
{
str = sanitizeString(data.toString()).toUtf8();
}
else if(data.type() == QVariant::Double) // double?
{
str = QByteArray::number(data.toDouble(), 'g', 20);
if(!str.contains(".") && ! str.contains("e"))
{
str += ".0";
}
}
else if (data.type() == QVariant::Bool) // boolean value?
{
str = data.toBool() ? "true" : "false";
}
else if (data.type() == QVariant::ULongLong) // large unsigned number?
{
str = QByteArray::number(data.value<qulonglong>());
}
else if ( data.canConvert<qlonglong>() ) // any signed number?
{
str = QByteArray::number(data.value<qlonglong>());
}
else if (data.canConvert<long>())
{
str = QString::number(data.value<long>()).toUtf8();
}
else if (data.canConvert<QString>()) // can value be converted to string?
{
// this will catch QDate, QDateTime, QUrl, ...
str = sanitizeString(data.toString()).toUtf8();
}
else
{
success = false;
}
if (success)
{
return str;
}
else
{
return QByteArray();
}
}
/**
* parseValue
*/
QVariant Json::parseValue(const QString &json, int &index, bool &success)
{
//Determine what kind of data we should parse by
//checking out the upcoming token
switch(Json::lookAhead(json, index))
{
case JsonTokenString:
return Json::parseString(json, index, success);
case JsonTokenNumber:
return Json::parseNumber(json, index);
case JsonTokenCurlyOpen:
return Json::parseObject(json, index, success);
case JsonTokenSquaredOpen:
return Json::parseArray(json, index, success);
case JsonTokenTrue:
Json::nextToken(json, index);
return QVariant(true);
case JsonTokenFalse:
Json::nextToken(json, index);
return QVariant(false);
case JsonTokenNull:
Json::nextToken(json, index);
return QVariant();
case JsonTokenNone:
break;
}
//If there were no tokens, flag the failure and return an empty QVariant
success = false;
return QVariant();
}
/**
* parseObject
*/
QVariant Json::parseObject(const QString &json, int &index, bool &success)
{
QVariantMap map;
int token;
//Get rid of the whitespace and increment index
Json::nextToken(json, index);
//Loop through all of the key/value pairs of the object
bool done = false;
while(!done)
{
//Get the upcoming token
token = Json::lookAhead(json, index);
if(token == JsonTokenNone)
{
success = false;
return QVariantMap();
}
else if(token == JsonTokenComma)
{
Json::nextToken(json, index);
}
else if(token == JsonTokenCurlyClose)
{
Json::nextToken(json, index);
return map;
}
else
{
//Parse the key/value pair's name
QString name = Json::parseString(json, index, success).toString();
if(!success)
{
return QVariantMap();
}
//Get the next token
token = Json::nextToken(json, index);
//If the next token is not a colon, flag the failure
//return an empty QVariant
if(token != JsonTokenColon)
{
success = false;
return QVariant(QVariantMap());
}
//Parse the key/value pair's value
QVariant value = Json::parseValue(json, index, success);
if(!success)
{
return QVariantMap();
}
//Assign the value to the key in the map
map[name] = value;
}
}
//Return the map successfully
return QVariant(map);
}
/**
* parseArray
*/
QVariant Json::parseArray(const QString &json, int &index, bool &success)
{
QVariantList list;
Json::nextToken(json, index);
bool done = false;
while(!done)
{
int token = Json::lookAhead(json, index);
if(token == JsonTokenNone)
{
success = false;
return QVariantList();
}
else if(token == JsonTokenComma)
{
Json::nextToken(json, index);
}
else if(token == JsonTokenSquaredClose)
{
Json::nextToken(json, index);
break;
}
else
{
QVariant value = Json::parseValue(json, index, success);
if(!success)
{
return QVariantList();
}
list.push_back(value);
}
}
return QVariant(list);
}
/**
* parseString
*/
QVariant Json::parseString(const QString &json, int &index, bool &success)
{
QString s;
QChar c;
Json::eatWhitespace(json, index);
c = json[index++];
bool complete = false;
while(!complete)
{
if(index == json.size())
{
break;
}
c = json[index++];
if(c == '\"')
{
complete = true;
break;
}
else if(c == '\\')
{
if(index == json.size())
{
break;
}
c = json[index++];
if(c == '\"')
{
s.append('\"');
}
else if(c == '\\')
{
s.append('\\');
}
else if(c == '/')
{
s.append('/');
}
else if(c == 'b')
{
s.append('\b');
}
else if(c == 'f')
{
s.append('\f');
}
else if(c == 'n')
{
s.append('\n');
}
else if(c == 'r')
{
s.append('\r');
}
else if(c == 't')
{
s.append('\t');
}
else if(c == 'u')
{
int remainingLength = json.size() - index;
if(remainingLength >= 4)
{
QString unicodeStr = json.mid(index, 4);
int symbol = unicodeStr.toInt(0, 16);
s.append(QChar(symbol));
index += 4;
}
else
{
break;
}
}
}
else
{
s.append(c);
}
}
if(!complete)
{
success = false;
return QVariant();
}
return QVariant(s);
}
/**
* parseNumber
*/
QVariant Json::parseNumber(const QString &json, int &index)
{
Json::eatWhitespace(json, index);
int lastIndex = Json::lastIndexOfNumber(json, index);
int charLength = (lastIndex - index) + 1;
QString numberStr;
numberStr = json.mid(index, charLength);
index = lastIndex + 1;
if (numberStr.contains('.')) {
return QVariant(numberStr.toDouble(NULL));
} else if (numberStr.startsWith('-')) {
return QVariant(numberStr.toLongLong(NULL));
} else {
return QVariant(numberStr.toULongLong(NULL));
}
}
/**
* lastIndexOfNumber
*/
int Json::lastIndexOfNumber(const QString &json, int index)
{
int lastIndex;
for(lastIndex = index; lastIndex < json.size(); lastIndex++)
{
if(QString("0123456789+-.eE").indexOf(json[lastIndex]) == -1)
{
break;
}
}
return lastIndex -1;
}
/**
* eatWhitespace
*/
void Json::eatWhitespace(const QString &json, int &index)
{
for(; index < json.size(); index++)
{
if(QString(" \t\n\r").indexOf(json[index]) == -1)
{
break;
}
}
}
/**
* lookAhead
*/
int Json::lookAhead(const QString &json, int index)
{
int saveIndex = index;
return Json::nextToken(json, saveIndex);
}
/**
* nextToken
*/
int Json::nextToken(const QString &json, int &index)
{
Json::eatWhitespace(json, index);
if(index == json.size())
{
return JsonTokenNone;
}
QChar c = json[index];
index++;
switch(c.toAscii())
{
case '{': return JsonTokenCurlyOpen;
case '}': return JsonTokenCurlyClose;
case '[': return JsonTokenSquaredOpen;
case ']': return JsonTokenSquaredClose;
case ',': return JsonTokenComma;
case '"': return JsonTokenString;
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
case '-': return JsonTokenNumber;
case ':': return JsonTokenColon;
}
index--;
int remainingLength = json.size() - index;
//True
if(remainingLength >= 4)
{
if (json[index] == 't' && json[index + 1] == 'r' &&
json[index + 2] == 'u' && json[index + 3] == 'e')
{
index += 4;
return JsonTokenTrue;
}
}
//False
if (remainingLength >= 5)
{
if (json[index] == 'f' && json[index + 1] == 'a' &&
json[index + 2] == 'l' && json[index + 3] == 's' &&
json[index + 4] == 'e')
{
index += 5;
return JsonTokenFalse;
}
}
//Null
if (remainingLength >= 4)
{
if (json[index] == 'n' && json[index + 1] == 'u' &&
json[index + 2] == 'l' && json[index + 3] == 'l')
{
index += 4;
return JsonTokenNull;
}
}
return JsonTokenNone;
}
} //end namespace

204
cockatrice/src/qt-json/json.h Normal file
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@ -0,0 +1,204 @@
/* Copyright 2011 Eeli Reilin. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY <COPYRIGHT HOLDER> ''AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL EELI REILIN OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation
* are those of the authors and should not be interpreted as representing
* official policies, either expressed or implied, of Eeli Reilin.
*/
/**
* \file json.h
*/
#ifndef JSON_H
#define JSON_H
#include <QVariant>
#include <QString>
namespace QtJson
{
/**
* \enum JsonToken
*/
enum JsonToken
{
JsonTokenNone = 0,
JsonTokenCurlyOpen = 1,
JsonTokenCurlyClose = 2,
JsonTokenSquaredOpen = 3,
JsonTokenSquaredClose = 4,
JsonTokenColon = 5,
JsonTokenComma = 6,
JsonTokenString = 7,
JsonTokenNumber = 8,
JsonTokenTrue = 9,
JsonTokenFalse = 10,
JsonTokenNull = 11
};
/**
* \class Json
* \brief A JSON data parser
*
* Json parses a JSON data into a QVariant hierarchy.
*/
class Json
{
public:
/**
* Parse a JSON string
*
* \param json The JSON data
*/
static QVariant parse(const QString &json);
/**
* Parse a JSON string
*
* \param json The JSON data
* \param success The success of the parsing
*/
static QVariant parse(const QString &json, bool &success);
/**
* This method generates a textual JSON representation
*
* \param data The JSON data generated by the parser.
* \param success The success of the serialization
*/
static QByteArray serialize(const QVariant &data);
/**
* This method generates a textual JSON representation
*
* \param data The JSON data generated by the parser.
* \param success The success of the serialization
*
* \return QByteArray Textual JSON representation
*/
static QByteArray serialize(const QVariant &data, bool &success);
private:
/**
* Parses a value starting from index
*
* \param json The JSON data
* \param index The start index
* \param success The success of the parse process
*
* \return QVariant The parsed value
*/
static QVariant parseValue(const QString &json, int &index,
bool &success);
/**
* Parses an object starting from index
*
* \param json The JSON data
* \param index The start index
* \param success The success of the object parse
*
* \return QVariant The parsed object map
*/
static QVariant parseObject(const QString &json, int &index,
bool &success);
/**
* Parses an array starting from index
*
* \param json The JSON data
* \param index The starting index
* \param success The success of the array parse
*
* \return QVariant The parsed variant array
*/
static QVariant parseArray(const QString &json, int &index,
bool &success);
/**
* Parses a string starting from index
*
* \param json The JSON data
* \param index The starting index
* \param success The success of the string parse
*
* \return QVariant The parsed string
*/
static QVariant parseString(const QString &json, int &index,
bool &success);
/**
* Parses a number starting from index
*
* \param json The JSON data
* \param index The starting index
*
* \return QVariant The parsed number
*/
static QVariant parseNumber(const QString &json, int &index);
/**
* Get the last index of a number starting from index
*
* \param json The JSON data
* \param index The starting index
*
* \return The last index of the number
*/
static int lastIndexOfNumber(const QString &json, int index);
/**
* Skip unwanted whitespace symbols starting from index
*
* \param json The JSON data
* \param index The start index
*/
static void eatWhitespace(const QString &json, int &index);
/**
* Check what token lies ahead
*
* \param json The JSON data
* \param index The starting index
*
* \return int The upcoming token
*/
static int lookAhead(const QString &json, int index);
/**
* Get the next JSON token
*
* \param json The JSON data
* \param index The starting index
*
* \return int The next JSON token
*/
static int nextToken(const QString &json, int &index);
};
} //end namespace
#endif //JSON_H