Re: struct containing vector?

From:

cerr <ron.eggler@gmail.com>

Newsgroups:

comp.lang.c++

Date:

Mon, 1 Feb 2010 09:31:57 -0800 (PST)

Message-ID:

<03244d97-7b38-4e01-8dcd-5446964abc48@x1g2000prb.googlegroups.com>

On Feb 1, 8:45 am, cerr <ron.egg...@gmail.com> wrote:

Hi There,

I have a little issue going here:
I have a xml configuration file that looks kinda like this:
<PID>
  <DESCRIPTION>Steveston Hwy</DESCRIPTION>
  <BCAST>192.168.101.255</BCAST>
  <DESTINATION>
    <DESTNO>1531</DESTNO>
    <DESTNO>301</DESTNO>
    <DESTNO>12555</DESTNO>
  </DESTINATION>
</PID>
Now there could be various <PID> tags as well as each <PID> would
likely have multiple <DESTNO> tags.
How do I store this best in my app?
I thoughtr I'd declare a struct like this:
struct structPID
{
        string strBcast;
        string strDescription;
        vector<int> Dest;};

and just extend the array when there's more PIDs in that file.
But when I read out the file i'm using my xml parser and i thought i'd
do something like this:
//i_PIDlist is the pointer to a variable decalred private in class
PIDClient.
bool PIDClient::readPIDConfig(string Configfile, vector<structPID>
*i_PIDlist)
{
    RSXMLParser xmlPIDData(Configfile,
                             RSXMLParser::F=

ILE);

    if (!xmlPIDData.IsDataGood()) {
        OUTPUT(std::cerr << "Document " << conf->
                         intersectionDataFile <=

< " is not parsed

successfully.\n";
              )
        return false;
    }

    string strPID = xmlPIDData.GetNodeData("PID"); //PID
    while (strPID.size() > 0) {
        RSXMLParser xmlPID(strPID); =

//PID details

        structPID tmpPID;

        tmpPID.strBcast=xmlPID.GetNodeData("BCAST");
        tmpPID.strDescription=xmlPID.GetNodeData("DESCRIPTION")=

;

        string strDest = xmlPIDData.GetNodeData("DESTINATION");
        while(strDest.size() > 0) {
          RSXMLParser xmlPIDDest(strDest);
          xmlPIDDest.GetNodeData("DESTNO");
          tmpPID.Dest->push_back();
        }
        i_PIDlist->push_back(tmpPID);
        //delete tmpPID;
        //tmpPID=NULL;

        strPID = xmlPIDData.GetNext();
    }

    return true;}

But there's two problems i'm seeing just right out of the bat:
If the outer while loop goes twice, how would tmpPID be re-declared?
I thought about declaring it on the heap and then calling delete in
the end of the funtion before it loops around but even then,
I would do a i_PIDlist->push_back(tmpPID) and it woudl push on a
pionter that gets ereased soon after...

Thanks for a little help and guidance here.

Ron

Ah,

I think I've figured out how I can do it:
How about this?

    while (strPID.size() > 0) {
        RSXMLParser xmlPID(strPID); //PID details
        structPID *tmpPID = new structPID;

        tmpPID->strBcast=xmlPID.GetNodeData("BCAST");
    tmpPID->strDescription=xmlPID.GetNodeData("DESCRIPTION");

    string strDest = xmlPIDData.GetNodeData("DESTINATION");
    while(strDest.size() > 0) {
      RSXMLParser xmlPIDDest(strDest);
      tmpPID->Dest.push_back(atoi(xmlPIDDest.GetNodeData("DESTNO").c_str
()));
    }
        i_PIDlist->push_back((*tmpPID));
    delete tmpPID;
    tmpPID=NULL;

        strPID = xmlPIDData.GetNext();
    }

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