SAX2Handler.cxx

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// $Id: SAX2Handler.cxx,v 1.1 2007/02/09 04:44:14 fmwk Exp $
//
//
// messier@indiana.edu
#include "XMLInterface/SAX2Handler.h"
#include <iostream>
#include "XMLInterface/Parser.h"
#include "XMLInterface/Builder.h"
#include "XMLInterface/BuilderFac.h"

xmli::SAX2Handler::SAX2Handler() : 
  fUri       (""),
  fLocalName (""),
  fQname     (""),
  fCharacters(""),
  fCount     (0 )
{ }

//......................................................................

xmli::SAX2Handler::~SAX2Handler() 
{
  // Check that the begin and end tag counts match
  if (fCount>0) {
    std::cerr << "xmli::SAX2Handler::" << __LINE__ 
              << " Tag '" << fLocalName << "' not closed "
              << " in " << xmli::Parser::GetCurrentSource()
              << " (count = " << fCount << ")" 
              << std::endl;
    abort();
  }
  if (fCount<0) {
    std::cerr << "xmli::SAX2Handler::" << __LINE__ 
              << " Tag '" << fLocalName << "' closed but not openned"
              << " in " << xmli::Parser::GetCurrentSource()
              << " (count = " << fCount << ")" 
              << std::endl;
    abort();
  }
}

//......................................................................

void xmli::SAX2Handler::StartElement(const std::string& uri,
                                   const std::string& localname,
                                   const std::string& qname,
                                   const xmli::AttributeList& attrs) 
{
//======================================================================
// Called at start of tag element
//======================================================================
  fUri        = uri;
  fLocalName  = localname;
  fQname      = qname;
  fAttributes = attrs;
  fCharacters = "";

  ++fCount;

  // std::cerr 
  // << "[StartElement]" 
  // << " [ uri=" << uri << "]"
  // << " [ localname=" << localname << "]"
  // << " [ qname=" << qname << "]"
  // << std::endl;
}

//......................................................................

void xmli::SAX2Handler::Characters(const std::string& chars) 
{
//======================================================================
// Spool the characters inside the element to the local buffer
//======================================================================
  // std::cerr << "[Charaters] " << chars << std::endl;
  fCharacters += chars;
}

//......................................................................

void xmli::SAX2Handler::EndElement(const std::string& uri,
                                 const std::string& localname,
                                 const std::string& qname) 
{
//======================================================================
// Handle the end tag
//======================================================================

  // These better match what we saw in the StartElement or we're in
  // big trouble
  if (uri       != fUri)       abort();
  if (localname != fLocalName) abort();
  if (qname     != fQname)     abort();
  --fCount;

  // Check if there is a builder defined for this tag. If yes, pass
  // the accumulated data off to the builder
  xmli::Builder* b = xmli::BuilderFac::Instance().Get(localname);
  if (b) b->Build(fAttributes, fCharacters);
  else {
    std::cerr << "xmli::SAX2Handler:" << __LINE__ 
              << " No no handler for tag '"
              << localname << "' from file "
              << xmli::Parser::GetCurrentSource()
              << std::endl;
    abort();
  }
  // std::cerr 
  // << "[EndElement]" 
  // << " [ uri=" << uri << "]"
  // << " [ localname=" << localname << "]"
  // << " [ qname=" << qname << "]"
  // << " [ builder=" << b << "]"
  // << std::endl;
}

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