void JSONUtil::getDocument(const string& jsonTxt, JSONElement& root)
{
string json(jsonTxt);
root.setType(JSONElement::JSON_OBJECT);
root.setName("_JSON_ROOT");
int arrst = json.find("[");
int objst = json.find("{");
if(json.find("{")!=string::npos && json.find("}")!=string::npos && (objst<arrst || arrst==(int)string::npos))
{
root.setType(JSONElement::JSON_OBJECT);
StringUtil::replaceFirst(json, "{", "");
StringUtil::replaceLast(json, "}", "");
readJSON(json,false,&root);
}
else if(json.find("[")!=string::npos && json.find("]")!=string::npos)
{
root.setType(JSONElement::JSON_ARRAY);
StringUtil::replaceFirst(json, "[", "");
StringUtil::replaceLast(json, "]", "");
readJSON(json,true,&root);
}
}
void JSONUtil::readJSON(string& json, const bool& isarray, JSONElement *par)
{
if(json=="")
return;
string name, value;
if(!isarray)
{
size_t stn = json.find("\"");
while(stn!=string::npos && stn>0 && json.at(stn-1)=='\\')
{
stn = json.find("\"", stn+1);
if(stn==0)
{
stn = string::npos;
}
}
if(stn==string::npos)
throw ("invalid json - no start '\"' found for name parameter");
size_t enn = json.find("\"", stn+1);
while(enn!=string::npos && enn>0 && json.at(enn-1)=='\\')
{
enn = json.find("\"", enn+1);
if(enn==0)
{
enn = string::npos;
}
}
if(enn==string::npos)
throw ("invalid json - no end '\"' found for name parameter");
if(stn!=enn-1)
name = json.substr(stn+1, (enn-stn-1));
//StringUtil::trim(name);
json = json.substr(enn+1);
StringUtil::trim(json);
size_t vst = json.find(":");
if(vst==string::npos)
throw ("invalid json - no ':' found");
else if(vst!=0)
throw ("invalid json - invalid json - invalid string before ':' found");
json = json.substr(vst+1);
}
JSONElement* element = new JSONElement;
element->setName(name);
StringUtil::trim(json);
size_t env = json.find(",");
size_t obs = json.find("{");
size_t ars = json.find("[");
if(obs==0)
{
readBalancedJSON(value, json, false, obs);
element->setType(JSONElement::JSON_OBJECT);
}
else if(ars==0)
{
readBalancedJSON(value, json, true, ars);
element->setType(JSONElement::JSON_ARRAY);
}
else if(env==string::npos)
{
value = json;
json = "";
element->setType(JSONElement::JSON_STRING);
}
else
{
if(obs!=string::npos && env==0 && (obs<ars || ars==string::npos))
{
readBalancedJSON(value, json, false, obs);
element->setType(JSONElement::JSON_OBJECT);
}
else if(ars!=string::npos && env==0 && (ars<obs || obs==string::npos))
{
readBalancedJSON(value, json, true, ars);
element->setType(JSONElement::JSON_ARRAY);
}
else if(obs!=string::npos && obs<env && (obs<ars || ars==string::npos))
{
readBalancedJSON(value, json, false, obs);
element->setType(JSONElement::JSON_OBJECT);
}
else if(ars!=string::npos && ars<env && (ars<obs || obs==string::npos))
{
readBalancedJSON(value, json, true, ars);
element->setType(JSONElement::JSON_ARRAY);
}
else
{
value = json.substr(0, env);
json = json.substr(env+1);
element->setType(JSONElement::JSON_STRING);
}
}
if(value=="")
{
string ex = "invalid json - no value object found for name "+ name;
throw (ex.c_str());
}
if(element->getType()!=JSONElement::JSON_OBJECT && element->getType()!=JSONElement::JSON_ARRAY)
{
validateSetValue(element, value);
}
par->addChild(element);
if(element->getType()==JSONElement::JSON_OBJECT)
object(value, element);
else if(element->getType()==JSONElement::JSON_ARRAY)
array(value, element);
readJSON(json,isarray,par);
}