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// file : examples/cxx/tree/caching/driver.cxx
// author : Boris Kolpackov <boris@codesynthesis.com>
// copyright : not copyrighted - public domain
#include <memory> // std::auto_ptr
#include <fstream>
#include <iostream>
#include <xercesc/dom/DOM.hpp>
#include <xercesc/util/XMLUniDefs.hpp> // chLatin_*
#include <xercesc/util/PlatformUtils.hpp>
#include <xercesc/validators/common/Grammar.hpp> // xercesc::Grammar
#include <xercesc/framework/Wrapper4InputSource.hpp>
#include <xsd/cxx/xml/dom/auto-ptr.hxx>
#include <xsd/cxx/xml/dom/bits/error-handler-proxy.hxx>
#include <xsd/cxx/xml/sax/std-input-source.hxx>
#include <xsd/cxx/tree/error-handler.hxx>
#include "library.hxx"
using namespace std;
int
main (int argc, char* argv[])
{
if (argc != 2)
{
cerr << "usage: " << argv[0] << " library.xml" << endl;
return 1;
}
int r (0);
// We need to initialize the Xerces-C++ runtime because we
// are doing the XML-to-DOM parsing ourselves.
//
xercesc::XMLPlatformUtils::Initialize ();
try
{
using namespace xercesc;
namespace xml = xsd::cxx::xml;
namespace tree = xsd::cxx::tree;
const XMLCh ls_id [] = {chLatin_L, chLatin_S, chNull};
// Get an implementation of the Load-Store (LS) interface.
//
DOMImplementation* impl (
DOMImplementationRegistry::getDOMImplementation (ls_id));
#if _XERCES_VERSION >= 30000
// Xerces-C++ 3.0.0 and later.
//
xml::dom::auto_ptr<DOMLSParser> parser (
impl->createLSParser (DOMImplementationLS::MODE_SYNCHRONOUS, 0));
DOMConfiguration* conf (parser->getDomConfig ());
// Discard comment nodes in the document.
//
conf->setParameter (XMLUni::fgDOMComments, false);
// Enable datatype normalization.
//
conf->setParameter (XMLUni::fgDOMDatatypeNormalization, true);
// Do not create EntityReference nodes in the DOM tree. No
// EntityReference nodes will be created, only the nodes
// corresponding to their fully expanded substitution text
// will be created.
//
conf->setParameter (XMLUni::fgDOMEntities, false);
// Perform namespace processing.
//
conf->setParameter (XMLUni::fgDOMNamespaces, true);
// Do not include ignorable whitespace in the DOM tree.
//
conf->setParameter (XMLUni::fgDOMElementContentWhitespace, false);
// Enable validation.
//
conf->setParameter (XMLUni::fgDOMValidate, true);
conf->setParameter (XMLUni::fgXercesSchema, true);
conf->setParameter (XMLUni::fgXercesSchemaFullChecking, false);
// Xerces-C++ 3.1.0 is the first version with working multi import
// support.
//
#if _XERCES_VERSION >= 30100
conf->setParameter (XMLUni::fgXercesHandleMultipleImports, true);
#endif
// Set error handler.
//
tree::error_handler<char> eh;
xml::dom::bits::error_handler_proxy<char> ehp (eh);
conf->setParameter (XMLUni::fgDOMErrorHandler, &ehp);
// Initialize the schema cache.
//
if (!parser->loadGrammar ("library.xsd", Grammar::SchemaGrammarType, true))
{
// In Xerces-C++ grammar loading failure results in just a warning.
// Make it a fatal error.
//
eh.handle ("library.xsd", 0, 0,
tree::error_handler<char>::severity::fatal,
"unable to load schema");
}
eh.throw_if_failed<xml_schema::parsing> ();
conf->setParameter (XMLUni::fgXercesUseCachedGrammarInParse, true);
// We will release the DOM document ourselves.
//
conf->setParameter (XMLUni::fgXercesUserAdoptsDOMDocument, true);
#else // _XERCES_VERSION >= 30000
// Same as above but for Xerces-C++ 2 series.
//
xml::dom::auto_ptr<DOMBuilder> parser (
impl->createDOMBuilder(DOMImplementationLS::MODE_SYNCHRONOUS, 0));
parser->setFeature (XMLUni::fgDOMComments, false);
parser->setFeature (XMLUni::fgDOMDatatypeNormalization, true);
parser->setFeature (XMLUni::fgDOMEntities, false);
parser->setFeature (XMLUni::fgDOMNamespaces, true);
parser->setFeature (XMLUni::fgDOMWhitespaceInElementContent, false);
parser->setFeature (XMLUni::fgDOMValidation, true);
parser->setFeature (XMLUni::fgXercesSchema, true);
parser->setFeature (XMLUni::fgXercesSchemaFullChecking, false);
tree::error_handler<char> eh;
xml::dom::bits::error_handler_proxy<char> ehp (eh);
parser->setErrorHandler (&ehp);
if (!parser->loadGrammar ("library.xsd", Grammar::SchemaGrammarType, true))
{
eh.handle ("library.xsd", 0, 0,
tree::error_handler<char>::severity::fatal,
"unable to load schema");
}
eh.throw_if_failed<xml_schema::parsing> ();
parser->setFeature (XMLUni::fgXercesUseCachedGrammarInParse, true);
parser->setFeature (XMLUni::fgXercesUserAdoptsDOMDocument, true);
#endif // _XERCES_VERSION >= 30000
// Parse XML documents.
//
for (unsigned long i (0); i < 10; ++i)
{
ifstream ifs;
ifs.exceptions (ifstream::badbit | ifstream::failbit);
ifs.open (argv[1]);
// Wrap the standard input stream.
//
xml::sax::std_input_source isrc (ifs, argv[1]);
Wrapper4InputSource wrap (&isrc, false);
// Parse XML to DOM.
//
#if _XERCES_VERSION >= 30000
xml_schema::dom::auto_ptr<DOMDocument> doc (parser->parse (&wrap));
#else
xml_schema::dom::auto_ptr<DOMDocument> doc (parser->parse (wrap));
#endif
eh.throw_if_failed<xml_schema::parsing> ();
// Parse DOM to the object model.
//
auto_ptr<library::catalog> c (library::catalog_ (*doc));
cerr << "catalog with " << c->book ().size () << " books" << endl;
}
}
catch (const xml_schema::exception& e)
{
cerr << e << endl;
r = 1;
}
catch (const std::ios_base::failure&)
{
cerr << argv[1] << ": unable to open or read failure" << endl;
r = 1;
}
xercesc::XMLPlatformUtils::Terminate ();
return r;
}
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