pana_xml_parser.cxx

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/* Open Diameter: Open-source software for the Diameter and               */
/*                Diameter related protocols                              */
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#include "pana_xml_errorreporter.h"
#include "pana_xml_parser.h"
#include <xercesc/util/PlatformUtils.hpp>
#include <xercesc/util/XMLString.hpp>
#include <xercesc/parsers/XercesDOMParser.hpp>

PANA_XMLElementParser::PANA_XMLElementParser(std::string &tagName)
{
   name_ = tagName;
}

int PANA_XMLElementParser::populate(DOMNode *n, DOMNode **found)
{
   DOMNode *sibling = n;
   while (sibling != NULL) {

      if (sibling->getNodeType() == DOMNode::ELEMENT_NODE) {

         char *c_str = XMLString::transcode(sibling->getNodeName());

         if (XMLString::compareString(c_str, name_.c_str()) == 0) {

             XMLString::release(&c_str);
          
            if (found) {
               *found = sibling;
            }

            return svc(sibling);
         }

         XMLString::release(&c_str);
      }
      sibling = sibling->getNextSibling();
   }
   return (-1);
}

char *PANA_XMLElementParser::getTextContent(DOMNode *n)
{
   DOMNode *child = n->getFirstChild();
   if (child && child->getNodeType() == DOMNode::TEXT_NODE) {
    
      const XMLCh *xmlCh = child->getNodeValue();
      if (xmlCh) {
         return XMLString::transcode(xmlCh);
      }
   }
   return (NULL);
}

int PANA_XMLTreeParser::open(std::string &filename, PANA_XMLElementParser &root)
{
   int rcode = (-1);

   try {
      XMLPlatformUtils::Initialize();

      XercesDOMParser parser;
      XMLDOMTreeErrorReporter errReporter;

      parser.setValidationScheme(XercesDOMParser::Val_Always);
      parser.setDoNamespaces(true);
      parser.setDoSchema(true);
      parser.setErrorHandler(&errReporter);

      try {
         parser.parse(filename.data());

         if (parser.getErrorCount() == 0) {
            DOMNode *doc = parser.getDocument();
            rcode = root.populate(doc->getFirstChild());
         }
      }
      catch (const DOMException& e) {
          ACE_UNUSED_ARG(e);
      }
      catch (const XMLException& e) {
          ACE_UNUSED_ARG(e);
      }
   }
   catch (const XMLException& toCatch) {
      ACE_UNUSED_ARG(toCatch);
   }

   close();
   return (rcode);
}

void PANA_XMLTreeParser::close()
{
   XMLPlatformUtils::Terminate();
}

int PANA_XMLDataString::svc(DOMNode *n)
{
   char *c_str = getTextContent(n);
   if (c_str) {
      payload.assign(c_str);
      XMLString::release(&c_str);
      return (0);
   }
   return (-1);
}

int PANA_XMLDataUInt32::svc(DOMNode *n)
{
   char *c_str = getTextContent(n);
   if (c_str) {
      payload = ACE_OS::atoi(c_str);
      XMLString::release(&c_str);
      return (0);
   }
   return (-1);
}

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