ExampleXMLIO.cpp

Example XMLIO operations

Author

MIP

/* 
This file is part of the BIAS library (Basic ImageAlgorithmS).

Copyright (C) 2003-2009    (see file CONTACT for details)
  Multimediale Systeme der Informationsverarbeitung
  Institut fuer Informatik
  Christian-Albrechts-Universitaet Kiel


BIAS is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

BIAS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License
along with BIAS; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

/**
   @example ExampleXMLIO.cpp
   @relates XMLIO
   @brief Example XMLIO operations
   @ingroup g_examples
   @author MIP   
*/
#include <Base/Common/XMLIO.hh>

using namespace BIAS;
using namespace std;

int main (int /*argc*/, char** /*argv*/)
{  
  // *****************************************
  // Write a new XML-File
  // *****************************************

  // remember some node pointers
  xmlNodePtr rootNode;
  xmlNodePtr currentNode2;
  xmlNodePtr currentNode3;

  // create an instance of XMLIO and initialize it with a new XML-File
  XMLIO myXML;

 // root node is named "XMLTest"
  rootNode = myXML.create("XMLTest");
  
  // set some nodes and attributes
  currentNode2 = myXML.addChildNode(rootNode, "Child1");

  myXML.addAttribute(currentNode2, "Attrib1", std::string("1234") );
  myXML.addAttribute(currentNode2, "Attribute2", std::string("4321.1234") );
  myXML.addAttribute(currentNode2, "NextAttribute", std::string("Content of attribute 3") );
  myXML.addContent(currentNode2, 
    std::string("The content of a node is written between the opening and closing tag.") );

  currentNode3 = myXML.addChildNode(currentNode2, "ChildOfChild1");
  myXML.addAttribute(currentNode3, "AttributeOfChildOfChild1", std::string("FULL") );
  myXML.addAttribute(currentNode3, "AttributeWithUmlaute", std::string("özil") );

 

  myXML.addContent(currentNode3, "myContent wtith umlaute. Schöner Mist");
 
  currentNode2 = myXML.addChildNode(rootNode, "Child2");
  
  // results in an Error: Blanks or special chars  not allowed in node 
  // and attribute names
  myXML.addAttribute(currentNode2, "my Attribute", std::string("will produce an error") );
  currentNode2 = myXML.addChildNode(rootNode, "Child 3");
  currentNode2 = myXML.addChildNode(rootNode, "Child'3");

  // OK again...
  currentNode2 = myXML.addChildNode(rootNode, "ThisIsChild3");
  myXML.addAttribute(currentNode2, "Roundness", std::string("Child 3 is very round") );
  myXML.addContent(currentNode2, "Just some content");

  // write the whole predefined structure
  if (myXML.write("test.xml") <0) exit(1);

  // ********************************************************************
  // now clear the whole thing and read it again

  xmlAttrPtr currAttr;

  myXML.clear();

  rootNode = myXML.read("test.xml");
  if (rootNode == NULL) {
    cout << "PARSING ERROR! Exiting XML-sample program...." << endl;
    return 0;
  }

  // Process the complete tree using loops
  currentNode2 = myXML.getFirstChild(rootNode);

  while (currentNode2!=NULL) {

    cout << endl << myXML.getNodeName(currentNode2) << endl;
    cout << "   Cont.: '" << myXML.getNodeContentString(currentNode2) << "'" << endl;
    
    currAttr = myXML.getFirstAttribute(currentNode2);
    while (currAttr!=NULL) {
      cout << "   Attr.: " << myXML.getAttributeName(currAttr) << 
        " = '" << myXML.getAttributeValueString(currAttr) << "'" << endl;
      currAttr = myXML.getNextAttribute();
    }

    // only depth 2 -> too lazy for recursion
    currentNode3 = myXML.getFirstChild(currentNode2);
 
    while (currentNode3!=NULL) {
      cout << endl << "   Child: " << myXML.getNodeName(currentNode3) << endl;

      string content = myXML.getNodeContentString(currentNode3);
      cout << "   Child Cont.: '" << content << endl;


      currAttr = myXML.getFirstAttribute(currentNode3);
      while (currAttr!=NULL) {
        cout << "   Child Attr.: " << myXML.getAttributeName(currAttr) << 
          " = '" << myXML.getAttributeValueString(currAttr) << "'" << endl;
        currAttr = myXML.getNextAttribute();
      }
      currentNode3 = myXML.getNextChild();
    }

    currentNode2 = myXML.getNextChild(currentNode2);
  }

  // distinct access to specific Nodes and Attributes
  cout << endl << endl << "Distinct Access:" << endl;

  currentNode2 = myXML.getChild(rootNode, "ThisIsChild3");
  if (currentNode2!=NULL) {
    cout << "'Roundness' of 'ThisIsChild3': " <<
      myXML.getAttributeValueString(currentNode2, "Roundness") << endl;
  }
  
  currentNode2 = myXML.getChild(rootNode, "Child1");
  if (currentNode2!=NULL) {
    cout << "'Attrib1' of 'Child1': " <<
      myXML.getAttributeValueInt(currentNode2, "Attrib1") << endl;
    cout << "'Attribute2' of 'Child1': " <<
      myXML.getAttributeValueDouble(currentNode2, "Attribute2") << endl;
  }

  return 0;

}