I want to read XML-data using TinyXML. I have the following XML-file:
<weatherdata>
<location>
<name>Vlaardingen</name>
<type/>
<country>NL</country>
<timezone/>
<location altitude="0"
latitude="51.912498"
longitude="4.34167"
geobase="geonames"
geobaseid="2745467"/>
</location>
<credit/>
<meta>
<lastupdate/>
<calctime>0.0152</calctime>
<nextupdate/>
</meta>
<sun rise="2016-02-23T06:40:58"
set="2016-02-23T17:11:47"/>
<forecast>
<time day="2016-02-23">
<symbol number="500"
name="lichte regen"
var="10d"/>
<precipitation/>
<windDirection deg="316"
code="NW"
name="Northwest"/>
<windSpeed mps="9.01"
name="Fresh Breeze"/>
<temperature day="6.06"
min="5.57"
max="6.06"
night="5.66"
eve="5.57"
morn="6.06"/>
<pressure unit="hPa"
value="1027.72"/>
<humidity value="96"
unit="%"/>
<clouds value="clear sky"
all="8"
unit="%"/>
</time>
<time day="2016-02-24">
<symbol number="501"
name="matige regen"
var="10d"/>
<precipitation value="3.15"
type="rain"/>
<windDirection deg="283"
code="WNW"
name="West-northwest"/>
<windSpeed mps="6.21"
name="Moderate breeze"/>
<temperature day="4.98"
min="4.17"
max="5.11"
night="4.17"
eve="4.85"
morn="4.32"/>
<pressure unit="hPa"
value="1030.97"/>
<humidity value="100"
unit="%"/>
<clouds value="scattered clouds"
all="48"
unit="%"/>
</time>
<time day="2016-02-25">
<symbol number="500"
name="lichte regen"
var="10d"/>
<precipitation value="1.23"
type="rain"/>
<windDirection deg="295"
code="WNW"
name="West-northwest"/>
<windSpeed mps="5.71"
name="Moderate breeze"/>
<temperature day="5.43"
min="4.92"
max="5.48"
night="5.34"
eve="5.48"
morn="4.92"/>
<pressure unit="hPa"
value="1026.18"/>
<humidity value="100"
unit="%"/>
<clouds value="broken clouds"
all="68"
unit="%"/>
</time>
</forecast>
</weatherdata>And the following C++ code:
for(TiXmlElement* e = elem->FirstChildElement("time"); e != NULL; e = e->FirstChildElement("symbol"))
{
cout << "Got symbol" << endl;
attr = e->Attribute("var");
if(attr != NULL)
cout << "Got var " << attr << endl;
attr = e->Attribute("name");
if(attr != NULL)
cout << "Got name " << attr << endl;
attr = e->Attribute("number");
if(attr != NULL)
cout << "Got number " << attr << endl;
}
My question is: How can I change this so all of the 'symbol' data from the three days gets read and displayed?
Greetings,
Don
The iterating clause of your for statement is wrong. That needs to iterate the time elements, and for each time element you must get it's child symbol element.
for (TiXmlElement* e = elem->FirstChildElement("time"); e != NULL; e = e->NextSiblingElement("time"))
{
TiXmlElement* t = e->FirstChildElement("symbol");
if (t)
{
const char *a1 = t->Attribute("var");
const char *a2 = t->Attribute("name");
const char *a3 = t->Attribute("number");
if (a1)
cout << "Got var " << a1 << "\n";
if (a2)
cout << "Got name " << a2 << "\n";
if (a3)
cout << "Got number " << a3 << "\n";
}
}