IsisXMLHistory.cpp

 
/* SPDX-License-Identifier: CC0-1.0 */
#include <string>
 
#include <xercesc/util/PlatformUtils.hpp>
#include <xercesc/sax2/SAX2XMLReader.hpp>
#include <xercesc/sax2/Attributes.hpp>
 
#include "IsisXMLHistory.h"
#include "IsisXMLChTrans.h"
 
using namespace std;
 
namespace XERCES = XERCES_CPP_NAMESPACE;
 
 
// Constructors
 
IsisXMLHistory::IsisXMLHistory(char *PencodingName,
                               bool &PexpandNamespaces,
                               XERCES::SAX2XMLReader* &Pparser,
                               std::vector<IsisChangeData> *Pchanges) {
 
  encodingName = PencodingName;
  expandNamespaces = PexpandNamespaces;
  parser = Pparser;
  changes = Pchanges;
 
  prevDocHandler = parser->getContentHandler();
  prevErrorHandler = parser->getErrorHandler();
 
  parser->setContentHandler(this);
  parser->setErrorHandler(this);
 
  generalHandler = NULL;
  ignoreHandler = NULL;
}
 
IsisXMLHistory::~IsisXMLHistory() {
  if(generalHandler != NULL) delete generalHandler;
  if(ignoreHandler != NULL) delete ignoreHandler;
}
 
 
//  IsisXMLHistory: Overrides of the SAX DocumentHandler interface
void IsisXMLHistory::characters(const XMLCh *const chars,
                                const XMLSize_t length) {}
 
 
void IsisXMLHistory::endElement(const XMLCh *const uri,
                                const XMLCh *const localname,
                                const XMLCh *const qname) {
  parser->setContentHandler(prevDocHandler);
  parser->setErrorHandler(prevErrorHandler);
}
 
 
void IsisXMLHistory::startElement(const XMLCh *const uri,
                                  const XMLCh *const localname,
                                  const XMLCh *const qname,
                                  const XERCES::Attributes &attributes) {
 
  if((string)XERCES::XMLString::transcode(localname) == (string)"change") {
    if(generalHandler != NULL) {
      delete generalHandler;
      generalHandler = NULL;
    }
 
    // Pull the attributes out and save them
    unsigned int index = changes->size();
    changes->resize(index + 1);
 
    // Get the name and date attributes
    string st;
    for(unsigned int i = 0; i < 2; i++) {
      st = XERCES::XMLString::transcode(attributes.getQName(i));
      if(st == "name") {
        (*changes)[index].name = XERCES::XMLString::transcode(attributes.getValue(i));
      }
      else if(st == "date") {
        (*changes)[index].date = XERCES::XMLString::transcode(attributes.getValue(i));
      }
    }
 
    generalHandler = new IsisXMLHandler(encodingName, expandNamespaces,
                                        parser, &(*changes)[index].description);
  }
  else {
    if(ignoreHandler != NULL) {
      delete ignoreHandler;
      ignoreHandler = NULL;
    }
    ignoreHandler = new IsisXMLIgnore(encodingName, expandNamespaces, parser,
                                      (string)XERCES::XMLString::transcode(localname));
  }
 
}