Simple JSON Implementation: Difference between revisions

From Qt Wiki
Jump to navigation Jump to search
No edit summary
 
No edit summary
Line 1: Line 1:
=Simple <span class="caps">JSON</span> Implementation=
[[Category:Snippets]]<br />[toc align_right=&quot;yes&amp;quot; depth=&quot;3&amp;quot;]


The reason I made this (except for the fun of it) is that I found a couple of people had issues with incorporating [http://qjson.sourceforge.net/ QJson] ''[qjson.sourceforge.net]'' in their projects (be it what it may). I reserve no copyrights to this implementation so you are all welcome to ctrl+c ctrl+v and do as you see fit with it.
= Simple JSON Implementation =


==JsonObject.hpp==
The reason I made this (except for the fun of it) is that I found a couple of people had issues with incorporating &quot;QJson&amp;quot;:http://qjson.sourceforge.net/ in their projects (be it what it may). I reserve no copyrights to this implementation so you are all welcome to ctrl+c ctrl+v and do as you see fit with it.


Here’s the cpp code:
== JsonObject.hpp ==


==JsonObject.cpp==
<code>#ifndef JSONOBJECT_HPP<br />#define JSONOBJECT_HPP


===Categories:===
#include &lt;QVariant&amp;gt;


* [[:Category:snippets|snippets]]
typedef QVariantList JsonArray;
 
class JsonObject<br />{<br />public:<br /> static const QString null;<br /> static const QString True;<br /> static const QString False;
 
JsonObject(QString jsonData = &quot;&quot;);
 
QString toString() const;
 
void put(const QString&amp;amp; id,JsonObject obj);<br /> void put(const QString&amp;amp; id,QString value);<br /> void put(const QString&amp;amp; id,int value);<br /> void put(const QString&amp;amp; id,double value);<br /> void put(const QString&amp;amp; id,qlonglong value);<br /> void put(const QString&amp;amp; id,JsonArray value);
 
JsonObject getObject(const QString&amp;amp; id, bool *ok = NULL) const;<br /> QString getString(const QString&amp;amp; id, bool *ok = NULL) const;<br /> int getInt(const QString&amp;amp; id, bool *ok = NULL) const;<br /> double getDouble(const QString&amp;amp; id, bool *ok = NULL) const;<br /> qlonglong getLong(const QString&amp;amp; id, bool *ok = NULL) const;<br /> JsonArray getArray(const QString&amp;amp; id, bool *ok = NULL) const;
 
bool isNull(const QString&amp;amp; id) const;
 
QVariantMap getRawData() const;<br />protected:<br /> void setRawData(QVariantMap data);
 
private:<br /> QString stringFromList(const JsonArray&amp;amp; array) const;<br /> QString getKey(QString&amp;amp; data);<br /> QString getValue(QString&amp;amp; data);<br /> JsonArray parseArray(QString data);
 
QVariantMap objectData;<br />};
 
#endif // JSONOBJECT_HPP<br /></code>
 
Here's the cpp code:
 
== JsonObject.cpp ==
 
<code>#include &quot;JsonObject.hpp&amp;quot;<br />#include &lt;QStringList&amp;gt;
 
QString JsonObject::toString() const<br />{<br /> QString result = &quot;{&quot;;<br /> QStringList keys = objectData.keys();<br /> for(int i = 0; i &lt; keys.count(); +''i)<br /> {<br /> QVariant data = objectData.value(keys.at(i));<br /> switch(data.type())<br /> {<br /> case QVariant::Map:<br /> {<br /> result.append('&quot;');<br /> result.append(keys.at(i));<br /> result.append('&quot;');<br /> result.append(':');<br /> JsonObject obj;<br /> obj.setRawData(data.toMap());<br /> result.append(obj.toString());<br /> result.append(',');<br /> }<br /> break;<br /> case QVariant::String:<br /> {<br /> result.append('&quot;');<br /> result.append(keys.at(i));<br /> result.append('&quot;');<br /> result.append(':');<br /> if(data.toString()  null || data.toString()  True<br /> || data.toString() == False)<br /> result.append(data.toString());<br /> else<br /> {<br /> result.append('&quot;');<br /> result.append(data.toString());<br /> result.append('&quot;');<br /> }<br /> result.append(',');<br /> }<br /> break;<br /> case QVariant::Int:<br /> {<br /> result.append('&quot;');<br /> result.append(keys.at(i));<br /> result.append('&quot;');<br /> result.append(':');<br /> result.append(QString(&quot;%1&amp;quot;).arg(data.toInt()));<br /> result.append(',');<br /> }<br /> break;<br /> case QVariant::Double:<br /> {<br /> result.append('&quot;');<br /> result.append(keys.at(i));<br /> result.append('&quot;');<br /> result.append(':');<br /> result.append(QString(&quot;%1&amp;quot;).arg(data.toDouble()));<br /> result.append(',');<br /> }<br /> break;<br /> case QVariant::LongLong:<br /> {<br /> result.append('&quot;');<br /> result.append(keys.at(i));<br /> result.append('&quot;');<br /> result.append(':');<br /> result.append(QString(&quot;%1&amp;quot;).arg(data.toLongLong()));<br /> result.append(',');<br /> }<br /> break;<br /> case QVariant::List:<br /> {<br /> result.append('&quot;');<br /> result.append(keys.at(i));<br /> result.append('&quot;');<br /> result.append(':');<br /> result.append(stringFromList(data.toList()));<br /> result.append(',');<br /> }<br /> break;<br /> default:<br /> break;<br /> }<br /> }<br /> if(result.endsWith(','))<br /> result.remove(result.length() - 1,1);<br /> result.append(&quot;}&quot;);<br /> return result;<br />}
<br />void JsonObject::put(const QString&amp;amp; id,JsonObject obj)<br />{<br /> objectData.insert(id,QVariant(obj.getRawData()));<br />}
<br />void JsonObject::put(const QString&amp;amp; id,QString value)<br />{<br /> if(value.startsWith('&quot;'))<br /> value.remove(0,1);<br /> if(value.endsWith('&quot;'))<br /> value.remove(value.length() - 1,1);<br /> objectData.insert(id,QVariant(value));<br />}
<br />void JsonObject::put(const QString&amp;amp; id,int value)<br />{<br /> objectData.insert(id,QVariant(value));<br />}
<br />void JsonObject::put(const QString&amp;amp; id,double value)<br />{<br /> objectData.insert(id,QVariant(value));<br />}
<br />void JsonObject::put(const QString&amp;amp; id,qlonglong value)<br />{<br /> objectData.insert(id,QVariant(value));<br />}
<br />void JsonObject::put(const QString&amp;amp; id,JsonArray value)<br />{<br /> objectData.insert(id,QVariant(value));<br />}
<br />JsonObject JsonObject::getObject(const QString&amp;amp; id, bool *ok) const<br />{<br /> JsonObject result;<br /> bool isOk = false;<br /> if(objectData.contains(id))<br /> {<br /> QVariant data = objectData.value(id);<br /> if(data.type() == QVariant::Map)<br /> {<br /> result.setRawData(data.toMap());<br /> isOk = true;<br /> }<br /> }<br /> if(ok != NULL)<br /> *ok = isOk;<br /> return result;<br />}
<br />QString JsonObject::getString(const QString&amp;amp; id, bool *ok) const<br />{<br /> QString result = &quot;&quot;;<br /> bool isOk = false;<br /> if(objectData.contains(id))<br /> {<br /> QVariant data = objectData.value(id);<br /> if(data.type() == QVariant::String)<br /> {<br /> result = data.toString();<br /> isOk = true;<br /> }<br /> }<br /> if(ok != NULL)<br /> *ok = isOk;<br /> return result;<br />}
<br />int JsonObject::getInt(const QString&amp;amp; id, bool *ok) const<br />{<br /> int result = 0;<br /> bool isOk = false;<br /> if(objectData.contains(id))<br /> {<br /> QVariant data = objectData.value(id);<br /> if(data.type() == QVariant::Int)<br /> {<br /> result = data.toInt();<br /> isOk = true;<br /> }<br /> }<br /> if(ok != NULL)<br /> *ok = isOk;<br /> return result;<br />}
<br />double JsonObject::getDouble(const QString&amp;amp; id, bool *ok) const<br />{<br /> double result = 0.0;<br /> bool isOk = false;<br /> if(objectData.contains(id))<br /> {<br /> QVariant data = objectData.value(id);<br /> if(data.type() == QVariant::Double)<br /> {<br /> result = data.toDouble();<br /> isOk = true;<br /> }<br /> }<br /> if(ok != NULL)<br /> *ok = isOk;<br /> return result;<br />}
<br />qlonglong JsonObject::getLong(const QString&amp;amp; id, bool *ok) const<br />{<br /> qlonglong result = 0;<br /> bool isOk = false;<br /> if(objectData.contains(id))<br /> {<br /> QVariant data = objectData.value(id);<br /> if(data.type() == QVariant::LongLong)<br /> {<br /> result = data.toLongLong();<br /> isOk = true;<br /> }<br /> }<br /> if(ok != NULL)<br /> *ok = isOk;<br /> return result;<br />}
<br />JsonArray JsonObject::getArray(const QString&amp;amp; id, bool *ok) const<br />{<br /> JsonArray result;<br /> bool isOk = false;<br /> if(objectData.contains(id))<br /> {<br /> QVariant data = objectData.value(id);<br /> if(data.type() == QVariant::List)<br /> {<br /> result = data.toList();<br /> isOk = true;<br /> }<br /> }<br /> if(ok != NULL)<br /> *ok = isOk;<br /> return result;<br />}
<br />bool JsonObject::isNull(const QString&amp;amp; id) const<br />{<br /> if(objectData.contains(id))<br /> {<br /> if(objectData.value(id).type()  QVariant::String)
            return objectData.value(id).toString()  null;<br /> return false;<br /> }<br /> return true;<br />}
<br />QVariantMap JsonObject::getRawData() const<br />{<br /> return objectData;<br />}
<br />void JsonObject::setRawData(QVariantMap data)<br />{<br /> objectData = data;<br />}
<br />QString JsonObject::stringFromList(const JsonArray&amp;amp; array) const<br />{<br /> QString result = &quot;[&quot;;<br /> for(int i = 0; i &lt; array.count();i)<br /> {<br /> QVariant data = array.at(i);<br /> switch(data.type())<br /> {<br /> case QVariant::Map:<br /> {<br /> JsonObject obj;<br /> obj.setRawData(data.toMap());<br /> result.append(obj.toString());<br /> result.append(',');<br /> }<br /> break;<br /> case QVariant::String:<br /> {<br /> if(data.toString()  null || data.toString()  False || data.toString() == True)<br /> result.append(data.toString());<br /> else<br /> {<br /> result.append('&quot;');<br /> result.append(data.toString());<br /> result.append('&quot;');<br /> }<br /> result.append(',');<br /> }<br /> break;<br /> case QVariant::Int:<br /> {<br /> result.append(QString(&quot;%1&amp;quot;).arg(data.toInt()));<br /> result.append(',');<br /> }<br /> break;<br /> case QVariant::Double:<br /> {<br /> result.append(QString(&quot;%1&amp;quot;).arg(data.toDouble()));<br /> result.append(',');<br /> }<br /> break;<br /> case QVariant::LongLong:<br /> {<br /> result.append(QString(&quot;%1&amp;quot;).arg(data.toLongLong()));<br /> result.append(',');<br /> }<br /> break;<br /> case QVariant::List:<br /> {<br /> result.append(stringFromList(data.toList()));<br /> result.append(',');<br /> }<br /> break;<br /> default:<br /> break;<br /> }<br /> }<br /> if(result.endsWith(','))<br /> result.remove(result.length() - 1,1);<br /> result.append(&quot;]&quot;);<br /> return result;<br />}
<br />QString JsonObject::getKey(QString&amp;amp; data)<br />{<br /> QString key = &quot;&quot;;<br /> int index = data.indexOf(':');<br /> if(index &gt;= 0)<br /> {<br /> key = data.mid(0,index);<br /> data.remove(0,index);<br /> if(data.startsWith(':'))<br /> data.remove(0,1);<br /> }<br /> if(key.startsWith('&quot;'))<br /> key.remove(0,1);<br /> if(key.endsWith('&quot;'))<br /> key.remove(key.length() - 1,1);<br /> return key;<br />}
<br />QString JsonObject::getValue(QString&amp;amp; data)<br />{<br /> QString value = &quot;&quot;;<br /> if(data.startsWith('{'))//object<br /> {<br /> int index = data.indexOf('}');<br /> if(index &gt;= 0)<br /> {<br /> value.append(data.mid(0,index'' 1));<br /> data.remove(0,index + 1);<br /> while(value.count('{') &gt; value.count('}'))<br /> {<br /> index = data.indexOf('}');<br /> if(index &gt;= 0)<br /> {<br /> value.append(data.mid(0,index + 1));<br /> data.remove(0,index + 1);<br /> }<br /> else<br /> {<br /> value = &quot;&quot;;<br /> break;<br /> }<br /> }<br /> if(data.startsWith(','))<br /> data.remove(0,1);<br /> }<br /> }<br /> else if(data.startsWith('['))//Array<br /> {<br /> int index = data.indexOf(']');<br /> if(index &gt;= 0)<br /> {<br /> value.append(data.mid(0,index + 1));<br /> data.remove(0,index + 1);<br /> while(value.count('[') &gt; value.count(']'))<br /> {<br /> index = data.indexOf(']');<br /> if(index &gt;= 0)<br /> {<br /> value.append(data.mid(0,index + 1));<br /> data.remove(0,index + 1);<br /> }<br /> else<br /> {<br /> value = &quot;&quot;;<br /> break;<br /> }<br /> }<br /> if(data.startsWith(','))<br /> data.remove(0,1);<br /> }<br /> }<br /> else<br /> {<br /> int index = data.indexOf(',');<br /> if(index &gt;= 0)<br /> {<br /> value = data.mid(0,index);<br /> data.remove(0,index);<br /> if(data.startsWith(','))<br /> data.remove(0,1);<br /> }<br /> else if(!data.contains(','))<br /> {<br /> value = data;<br /> data.clear();<br /> }<br /> }<br /> return value;<br />}
 
JsonArray JsonObject::parseArray(QString data)<br />{<br /> JsonArray result;<br /> if(data.startsWith('[') &amp;&amp; data.endsWith(']'))<br /> {<br /> data.remove(0,1);<br /> data.remove(data.length() - 1,1);<br /> while(data.length() &gt; 0)<br /> {<br /> QString value = getValue(data);<br /> if(value.startsWith('{'))//Object<br /> {<br /> JsonObject obj(value);<br /> result.append(QVariant(obj.getRawData()));<br /> }<br /> else if(value.startsWith('['))//Array<br /> {<br /> JsonArray array = parseArray(value);<br /> result.append(QVariant(array));<br /> }<br /> else if(value.startsWith('&quot;'))//String<br /> {<br /> value.remove(0,1);<br /> if(value.endsWith('&quot;'))<br /> value.remove(value.length() - 1,1);<br /> result.append(QVariant(value));<br /> }<br /> else if(value  null)
                result.append(QVariant(null));
            else if(value  True)<br /> result.append(QVariant(True));<br /> else if(value == False)<br /> result.append(QVariant(False));<br /> else//Number<br /> {<br /> if(value.contains('.'))//double<br /> {<br /> bool ok;<br /> double doubleValue = value.toDouble(&amp;ok);<br /> if(ok)<br /> result.append(QVariant(doubleValue));<br /> else<br /> result.append(QVariant(0.0));<br /> }<br /> else//int || long<br /> {<br /> bool ok;<br /> int intValue = value.toInt(&amp;ok);<br /> if(ok)<br /> result.append(QVariant(intValue));<br /> else<br /> {<br /> qlonglong longValue = value.toLongLong(&amp;ok);<br /> if(ok)<br /> result.append(QVariant(longValue));<br /> else<br /> result.append(QVariant(0));<br /> }<br /> }<br /> }<br /> }<br /> }<br /> return result;<br />}
 
JsonObject::JsonObject(QString jsonData)<br />{<br /> if(jsonData.startsWith('{') &amp;&amp; jsonData.endsWith('}'))<br /> {<br /> jsonData.remove(0,1);<br /> jsonData.remove(jsonData.length() - 1,1);<br /> while(jsonData.length() &gt; 0)<br /> {<br /> QString key = getKey(jsonData);<br /> QString value = getValue(jsonData);<br /> if(value.startsWith('{'))//Object<br /> this-&gt;put(key,JsonObject(value));<br /> else if(value.startsWith('['))//Array<br /> {<br /> JsonArray array = parseArray(value);<br /> this-&gt;put(key,array);<br /> }<br /> else if(value.startsWith('&quot;'))//String<br /> this-&gt;put(key,value);<br /> else if(value  null)
                this-&amp;gt;put(key,null);
            else if(value  True)<br /> this-&gt;put(key,True);<br /> else if(value == False)<br /> this-&gt;put(key,False);<br /> else//Number<br /> {<br /> if(value.contains('.'))//double<br /> {<br /> bool ok;<br /> double doubleValue = value.toDouble(&amp;ok);<br /> if(ok)<br /> this-&gt;put(key,doubleValue);<br /> else<br /> this-&gt;put(key,0.0);<br /> }<br /> else//int || long<br /> {<br /> bool ok;<br /> int intValue = value.toInt(&amp;ok);<br /> if(ok)<br /> this-&gt;put(key,intValue);<br /> else<br /> {<br /> qlonglong longValue = value.toLongLong(&amp;ok);<br /> if(ok)<br /> this-&gt;put(key,longValue);<br /> else<br /> this-&gt;put(key,0);<br /> }<br /> }<br /> }<br /> }<br /> }<br />}
 
const QString JsonObject::null = &quot;null&amp;quot;;<br />const QString JsonObject::True = &quot;true&amp;quot;;<br />const QString JsonObject::False = &quot;false&amp;quot;;

Revision as of 06:14, 24 February 2015


[toc align_right="yes&quot; depth="3&quot;]

Simple JSON Implementation

The reason I made this (except for the fun of it) is that I found a couple of people had issues with incorporating "QJson&quot;:http://qjson.sourceforge.net/ in their projects (be it what it may). I reserve no copyrights to this implementation so you are all welcome to ctrl+c ctrl+v and do as you see fit with it.

JsonObject.hpp

#ifndef JSONOBJECT_HPP<br />#define JSONOBJECT_HPP

#include &lt;QVariant&amp;gt;

typedef QVariantList JsonArray;

class JsonObject<br />{<br />public:<br /> static const QString null;<br /> static const QString True;<br /> static const QString False;

JsonObject(QString jsonData = &quot;&quot;);

QString toString() const;

void put(const QString&amp;amp; id,JsonObject obj);<br /> void put(const QString&amp;amp; id,QString value);<br /> void put(const QString&amp;amp; id,int value);<br /> void put(const QString&amp;amp; id,double value);<br /> void put(const QString&amp;amp; id,qlonglong value);<br /> void put(const QString&amp;amp; id,JsonArray value);

JsonObject getObject(const QString&amp;amp; id, bool *ok = NULL) const;<br /> QString getString(const QString&amp;amp; id, bool *ok = NULL) const;<br /> int getInt(const QString&amp;amp; id, bool *ok = NULL) const;<br /> double getDouble(const QString&amp;amp; id, bool *ok = NULL) const;<br /> qlonglong getLong(const QString&amp;amp; id, bool *ok = NULL) const;<br /> JsonArray getArray(const QString&amp;amp; id, bool *ok = NULL) const;

bool isNull(const QString&amp;amp; id) const;

QVariantMap getRawData() const;<br />protected:<br /> void setRawData(QVariantMap data);

private:<br /> QString stringFromList(const JsonArray&amp;amp; array) const;<br /> QString getKey(QString&amp;amp; data);<br /> QString getValue(QString&amp;amp; data);<br /> JsonArray parseArray(QString data);

QVariantMap objectData;<br />};

#endif // JSONOBJECT_HPP<br />

Here's the cpp code:

JsonObject.cpp

#include "JsonObject.hpp&quot;
#include <QStringList&gt;

QString JsonObject::toString() const
{
QString result = "{";
QStringList keys = objectData.keys();
for(int i = 0; i < keys.count(); +i)
{
QVariant data = objectData.value(keys.at(i));
switch(data.type())
{
case QVariant::Map:
{
result.append('"');
result.append(keys.at(i));
result.append('"');
result.append(':');
JsonObject obj;
obj.setRawData(data.toMap());
result.append(obj.toString());
result.append(',');
}
break;
case QVariant::String:
{
result.append('"');
result.append(keys.at(i));
result.append('"');
result.append(':');
if(data.toString() null || data.toString() True
|| data.toString() == False)
result.append(data.toString());
else
{
result.append('"');
result.append(data.toString());
result.append('"');
}
result.append(',');
}
break;
case QVariant::Int:
{
result.append('"');
result.append(keys.at(i));
result.append('"');
result.append(':');
result.append(QString("%1&quot;).arg(data.toInt()));
result.append(',');
}
break;
case QVariant::Double:
{
result.append('"');
result.append(keys.at(i));
result.append('"');
result.append(':');
result.append(QString("%1&quot;).arg(data.toDouble()));
result.append(',');
}
break;
case QVariant::LongLong:
{
result.append('"');
result.append(keys.at(i));
result.append('"');
result.append(':');
result.append(QString("%1&quot;).arg(data.toLongLong()));
result.append(',');
}
break;
case QVariant::List:
{
result.append('"');
result.append(keys.at(i));
result.append('"');
result.append(':');
result.append(stringFromList(data.toList()));
result.append(',');
}
break;
default:
break;
}
}
if(result.endsWith(','))
result.remove(result.length() - 1,1);
result.append("}");
return result;
}

void JsonObject::put(const QString&amp; id,JsonObject obj)
{
objectData.insert(id,QVariant(obj.getRawData()));
}
void JsonObject::put(const QString&amp; id,QString value)
{
if(value.startsWith('"'))
value.remove(0,1);
if(value.endsWith('"'))
value.remove(value.length() - 1,1);
objectData.insert(id,QVariant(value));
}
void JsonObject::put(const QString&amp; id,int value)
{
objectData.insert(id,QVariant(value));
}
void JsonObject::put(const QString&amp; id,double value)
{
objectData.insert(id,QVariant(value));
}
void JsonObject::put(const QString&amp; id,qlonglong value)
{
objectData.insert(id,QVariant(value));
}
void JsonObject::put(const QString&amp; id,JsonArray value)
{
objectData.insert(id,QVariant(value));
}
JsonObject JsonObject::getObject(const QString&amp; id, bool *ok) const
{
JsonObject result;
bool isOk = false;
if(objectData.contains(id))
{
QVariant data = objectData.value(id);
if(data.type() == QVariant::Map)
{
result.setRawData(data.toMap());
isOk = true;
}
}
if(ok != NULL)
*ok = isOk;
return result;
}
QString JsonObject::getString(const QString&amp; id, bool *ok) const
{
QString result = "";
bool isOk = false;
if(objectData.contains(id))
{
QVariant data = objectData.value(id);
if(data.type() == QVariant::String)
{
result = data.toString();
isOk = true;
}
}
if(ok != NULL)
*ok = isOk;
return result;
}
int JsonObject::getInt(const QString&amp; id, bool *ok) const
{
int result = 0;
bool isOk = false;
if(objectData.contains(id))
{
QVariant data = objectData.value(id);
if(data.type() == QVariant::Int)
{
result = data.toInt();
isOk = true;
}
}
if(ok != NULL)
*ok = isOk;
return result;
}
double JsonObject::getDouble(const QString&amp; id, bool *ok) const
{
double result = 0.0;
bool isOk = false;
if(objectData.contains(id))
{
QVariant data = objectData.value(id);
if(data.type() == QVariant::Double)
{
result = data.toDouble();
isOk = true;
}
}
if(ok != NULL)
*ok = isOk;
return result;
}
qlonglong JsonObject::getLong(const QString&amp; id, bool *ok) const
{
qlonglong result = 0;
bool isOk = false;
if(objectData.contains(id))
{
QVariant data = objectData.value(id);
if(data.type() == QVariant::LongLong)
{
result = data.toLongLong();
isOk = true;
}
}
if(ok != NULL)
*ok = isOk;
return result;
}
JsonArray JsonObject::getArray(const QString&amp; id, bool *ok) const
{
JsonArray result;
bool isOk = false;
if(objectData.contains(id))
{
QVariant data = objectData.value(id);
if(data.type() == QVariant::List)
{
result = data.toList();
isOk = true;
}
}
if(ok != NULL)
*ok = isOk;
return result;
}
bool JsonObject::isNull(const QString&amp; id) const
{
if(objectData.contains(id))
{
if(objectData.value(id).type() QVariant::String)

           return objectData.value(id).toString()  null;
return false;
}
return true;
}


QVariantMap JsonObject::getRawData() const
{
return objectData;
}
void JsonObject::setRawData(QVariantMap data)
{
objectData = data;
}
QString JsonObject::stringFromList(const JsonArray&amp; array) const
{
QString result = "[";
for(int i = 0; i < array.count();i)
{
QVariant data = array.at(i);
switch(data.type())
{
case QVariant::Map:
{
JsonObject obj;
obj.setRawData(data.toMap());
result.append(obj.toString());
result.append(',');
}
break;
case QVariant::String:
{
if(data.toString() null || data.toString() False || data.toString() == True)
result.append(data.toString());
else
{
result.append('"');
result.append(data.toString());
result.append('"');
}
result.append(',');
}
break;
case QVariant::Int:
{
result.append(QString("%1&quot;).arg(data.toInt()));
result.append(',');
}
break;
case QVariant::Double:
{
result.append(QString("%1&quot;).arg(data.toDouble()));
result.append(',');
}
break;
case QVariant::LongLong:
{
result.append(QString("%1&quot;).arg(data.toLongLong()));
result.append(',');
}
break;
case QVariant::List:
{
result.append(stringFromList(data.toList()));
result.append(',');
}
break;
default:
break;
}
}
if(result.endsWith(','))
result.remove(result.length() - 1,1);
result.append("]");
return result;
}
QString JsonObject::getKey(QString&amp; data)
{
QString key = "";
int index = data.indexOf(':');
if(index >= 0)
{
key = data.mid(0,index);
data.remove(0,index);
if(data.startsWith(':'))
data.remove(0,1);
}
if(key.startsWith('"'))
key.remove(0,1);
if(key.endsWith('"'))
key.remove(key.length() - 1,1);
return key;
}
QString JsonObject::getValue(QString&amp; data)
{
QString value = "";
if(data.startsWith('{'))//object
{
int index = data.indexOf('}');
if(index >= 0)
{
value.append(data.mid(0,index 1));
data.remove(0,index + 1);
while(value.count('{') > value.count('}'))
{
index = data.indexOf('}');
if(index >= 0)
{
value.append(data.mid(0,index + 1));
data.remove(0,index + 1);
}
else
{
value = "";
break;
}
}
if(data.startsWith(','))
data.remove(0,1);
}
}
else if(data.startsWith('['))//Array
{
int index = data.indexOf(']');
if(index >= 0)
{
value.append(data.mid(0,index + 1));
data.remove(0,index + 1);
while(value.count('[') > value.count(']'))
{
index = data.indexOf(']');
if(index >= 0)
{
value.append(data.mid(0,index + 1));
data.remove(0,index + 1);
}
else
{
value = "";
break;
}
}
if(data.startsWith(','))
data.remove(0,1);
}
}
else
{
int index = data.indexOf(',');
if(index >= 0)
{
value = data.mid(0,index);
data.remove(0,index);
if(data.startsWith(','))
data.remove(0,1);
}
else if(!data.contains(','))
{
value = data;
data.clear();
}
}
return value;
}

JsonArray JsonObject::parseArray(QString data)
{
JsonArray result;
if(data.startsWith('[') && data.endsWith(']'))
{
data.remove(0,1);
data.remove(data.length() - 1,1);
while(data.length() > 0)
{
QString value = getValue(data);
if(value.startsWith('{'))//Object
{
JsonObject obj(value);
result.append(QVariant(obj.getRawData()));
}
else if(value.startsWith('['))//Array
{
JsonArray array = parseArray(value);
result.append(QVariant(array));
}
else if(value.startsWith('"'))//String
{
value.remove(0,1);
if(value.endsWith('"'))
value.remove(value.length() - 1,1);
result.append(QVariant(value));
}
else if(value null)

               result.append(QVariant(null));
           else if(value  True)
result.append(QVariant(True));
else if(value == False)
result.append(QVariant(False));
else//Number
{
if(value.contains('.'))//double
{
bool ok;
double doubleValue = value.toDouble(&ok);
if(ok)
result.append(QVariant(doubleValue));
else
result.append(QVariant(0.0));
}
else//int || long
{
bool ok;
int intValue = value.toInt(&ok);
if(ok)
result.append(QVariant(intValue));
else
{
qlonglong longValue = value.toLongLong(&ok);
if(ok)
result.append(QVariant(longValue));
else
result.append(QVariant(0));
}
}
}
}
}
return result;
}

JsonObject::JsonObject(QString jsonData)
{
if(jsonData.startsWith('{') && jsonData.endsWith('}'))
{
jsonData.remove(0,1);
jsonData.remove(jsonData.length() - 1,1);
while(jsonData.length() > 0)
{
QString key = getKey(jsonData);
QString value = getValue(jsonData);
if(value.startsWith('{'))//Object
this->put(key,JsonObject(value));
else if(value.startsWith('['))//Array
{
JsonArray array = parseArray(value);
this->put(key,array);
}
else if(value.startsWith('"'))//String
this->put(key,value);
else if(value null)

               this-&gt;put(key,null);
           else if(value  True)
this->put(key,True);
else if(value == False)
this->put(key,False);
else//Number
{
if(value.contains('.'))//double
{
bool ok;
double doubleValue = value.toDouble(&ok);
if(ok)
this->put(key,doubleValue);
else
this->put(key,0.0);
}
else//int || long
{
bool ok;
int intValue = value.toInt(&ok);
if(ok)
this->put(key,intValue);
else
{
qlonglong longValue = value.toLongLong(&ok);
if(ok)
this->put(key,longValue);
else
this->put(key,0);
}
}
}
}
}
}

const QString JsonObject::null = "null&quot;;
const QString JsonObject::True = "true&quot;;
const QString JsonObject::False = "false&quot;;