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HaniDaher

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load XML file iteration

Hi,
I have an xml File (see attached file)
This file is composed of Blocks, Lines, words, characters:

Every Block  is composed of 1,...,n Lines
Every line is composed of 1,...,k  words
Every word is composed of 1,...,l  characters

I am trying to create objects as follows:
Block(Int top, Int left, Int bottom, int right, vector<Lines>)
Line(Int top, Int left, Int bottom, int right, vector<words>)
Word(Int top, Int left, Int bottom, int right, vector<characters>)



I am using TinyXML on C++, but i can't link them together, My code can take one object( block,line,word,character) at a time.

void Keywords::checkChild(TiXmlElement *child)
{
       if(child)
        {

            if((string)child->Value() == "block")
            {
                cout << child->Value()<<endl;

                double x1 = atoi(child->Attribute("left"));
                double y1 = atoi(child->Attribute("top"));
                double x2 = atoi(child->Attribute("right"));
                double y2=  atoi(child->Attribute("bottom"));
              //Vector<Line>lineList
              //  blockList.push_back(newBlock(y1,x1,y2,x2,lineList));
            }


          checkChild(child->FirstChildElement());
          
          checkChild(child->NextSiblingElement());

        }///end if child
}

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Thank you.
00000012-1-R.xml
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TommySzalapski
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You need to have a different function for each type (or if they all have the same attributes you could use templates).

Something like
void Keywords::checkBlock(TiXmlElement *child)
{
       if(child)
        {

            if((string)child->Value() == "block")
            {
                cout << child->Value()<<endl;

                double x1 = atoi(child->Attribute("left"));
                double y1 = atoi(child->Attribute("top"));
                double x2 = atoi(child->Attribute("right"));
                double y2=  atoi(child->Attribute("bottom"));
                blockList.push_back(newBlock(y1,x1,y2,x2);
            }

          child = child->FirstChildElement();
          while(child)
          {
              getLine(child, blockList.Back());
              child = child->NextSiblingElement();
           }
        }///end if child
}
[code]
void Keywords::checkLine(TiXmlElement *child, Block* block)
{
       if(child)
        {

            if((string)child->Value() == "line")
            {
                cout << child->Value()<<endl;

                double m = atoi(child->Attribute("slope")); //or whatever
                double x0 = atoi(child->Attribute("intercept"));
                block->m_line_list.push_back(newLine(m,x0));
            }

          child = child->FirstChildElement();
          while(child)
          {
              getWord(child, block->m_line_list.Back());
              child = child->NextSiblingElement();
           }
        }///end if child
}
      

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Avatar of HaniDaher
HaniDaher

ASKER

Yes Tommy that's what i thought. I actually managed to find the following solution:
void parseFile(TiXmlElement* document, vector<Block*>& blocks)
{
  for (TiXmlElement* sub = document->GetFirstChildElement("block"); sub; sub = sub->GetNextSiblingElement("block"))
    blocks.push_back(parseBlock(sub));
}
Block* parseBlock(TiXmlElement* element)
{
  double x1 = atof(element->Attribute("left"));
  // ...
  vector<Line*> lines;
  for (TiXmlElement* sub = element->GetFirstChildElement("line"); sub; sub = sub->GetNextSiblingElement("line"))
    lines.push_back(parseLine(sub));
  return new Block(x1, ..., lines);
}
Line* parseLine(TiXmlElement* element)
{
  double x1 = atof(element->Attribute("left"));
  // ...
  vector<Word*> words;
  for (TiXmlElement* sub = element->GetFirstChildElement("word"); sub; sub = sub->GetNextSiblingElement("word"))
    words.push_back(parseWord(sub));
  return new Line(x1, ..., words);
}
Word* parseWord(TiXmlElement* element)
{
  double x1 = atof(element->Attribute("left"));
  // ...
  vector<Char*> chars;
  for (TiXmlElement* sub = element->GetFirstChildElement("char"); sub; sub = sub->GetNextSiblingElement("char"))
    chars.push_back(parseChar(sub));
  return new Word(x1, ..., chars);
}
Char* parseChar(TiXmlElement* element)
{
  double x1 = atof(element->Attribute("left"));
  // ...
  return new Char(x1, ...);
}

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I think it is basically the same idea as yours.
What do you think about the above code?
SOLUTION
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TommySzalapski
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