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source: GTP/trunk/Lib/Vis/Preprocessing/src/X3dParser.cpp @ 726

Revision 726, 22.1 KB checked in by mattausch, 19 years ago (diff)
improved performance of TerrainSceneManager? revisit octreescenemanager

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1	// ---------------------------------------------------------------------------
2	// Includes for all the program files to see
3	// ---------------------------------------------------------------------------
4	#include <string.h>
5	#include <stdlib.h>
6	#include <iostream>
7	using namespace std;
8	#include <xercesc/util/PlatformUtils.hpp>
9
10	// ---------------------------------------------------------------------------
11	// Includes
12	// ---------------------------------------------------------------------------
13	#include <xercesc/framework/StdInInputSource.hpp>
14	#include <xercesc/parsers/SAXParser.hpp>
15	#include <xercesc/util/OutOfMemoryException.hpp>
16
17	// ---------------------------------------------------------------------------
18	// Includes
19	// ---------------------------------------------------------------------------
20	#include <xercesc/sax/AttributeList.hpp>
21	#include <xercesc/sax/SAXParseException.hpp>
22	#include <xercesc/sax/SAXException.hpp>
23
24	#include "X3dParser.h"
25
26	#include "X3dParserXerces.h"
27	#include "Mesh.h"
28	#include "SceneGraph.h"
29	#include "Triangle3.h"
30	#include "ViewCellsManager.h"
31
32	// ---------------------------------------------------------------------------
33	// Local data
34	//
35	// doNamespaces
36	// Indicates whether namespace processing should be enabled or not.
37	// The default is no, but -n overrides that.
38	//
39	// doSchema
40	// Indicates whether schema processing should be enabled or not.
41	// The default is no, but -s overrides that.
42	//
43	// schemaFullChecking
44	// Indicates whether full schema constraint checking should be enabled or not.
45	// The default is no, but -s overrides that.
46	//
47	// valScheme
48	// Indicates what validation scheme to use. It defaults to 'auto', but
49	// can be set via the -v= command.
50	// ---------------------------------------------------------------------------
51	static bool doNamespaces = false;
52	static bool doSchema = false;
53	static bool schemaFullChecking = false;
54	static SAXParser::ValSchemes valScheme = SAXParser::Val_Auto;
55
56	#define ROTATE_SCENE 0
57
58
59	static void RotateMesh(Mesh *mesh)
60	{
61	VertexContainer::iterator it, it_end = mesh->mVertices.end();
62
63	const float angle = 30.0f * PI / 180.0f;
64	const Matrix4x4 rot = RotationYMatrix(angle);
65
66	for (it = mesh->mVertices.begin(); it != it_end; ++ it)
67	{
68	(it) = rot (*it);
69	}
70	}
71
72	// ---------------------------------------------------------------------------
73	// StdInParseHandlers: Constructors and Destructor
74	// ---------------------------------------------------------------------------
75	X3dParseHandlers::X3dParseHandlers(SceneGraphNode *root, const bool loadPolygonsAsMeshes):
76	mElementCount(0)
77	, mAttrCount(0)
78	, mCharacterCount(0)
79	, mSpaceCount(0)
80	, mLoadPolygonsAsMeshes(loadPolygonsAsMeshes)
81	{
82	mCurrentNode = root;
83	// this matrix should never be removed from stack
84	//mTransformations.push(IdentityMatrix());
85	}
86
87	X3dParseHandlers::~X3dParseHandlers()
88	{
89	if (!mTransformations.empty())
90	cout << "error: transformation stack size: " << (int)mTransformations.size() << endl;
91	}
92
93
94	// ---------------------------------------------------------------------------
95	// StdInParseHandlers: Implementation of the SAX DocumentHandler interface
96	// ---------------------------------------------------------------------------
97	void X3dParseHandlers::endElement(const XMLCh* const name)
98	{
99	StrX lname(name);
100	string element(lname.LocalForm());
101
102	if (element == "Shape")
103	EndShape();
104	if (1)
105	if (element == "Transform")
106	EndTransform();
107	}
108
109
110
111
112	void X3dParseHandlers::ApplyTransformation(Mesh *mesh,
113	const Matrix4x4 &m) const
114	{
115	VertexContainer::iterator it, it_end = mesh->mVertices.end();
116
117	for (it = mesh->mVertices.begin(); it != it_end; ++ it)
118	{
119	(it) = m (*it);
120	}
121	}
122
123
124	void X3dParseHandlers::ApplyTransformations(TrafoStack trafos, Mesh *mesh) const
125	{
126	while (!trafos.empty())
127	{
128	const Matrix4x4 m = trafos.top();
129	trafos.pop();
130
131	ApplyTransformation(mesh, m);
132	}
133	}
134
135	void X3dParseHandlers::StartTransform(AttributeList& attributes)
136	{
137	Matrix4x4 currentTransform = IdentityMatrix();
138
139	const int len = attributes.getLength();
140
141	for (int i = 0; i < len; ++ i)
142	{
143	string attrName(StrX(attributes.getName(i)).LocalForm());
144
145	StrX attrValue(attributes.getValue(i));
146	const char *ptr = attrValue.LocalForm();
147
148	if (attrName == "rotation")
149	{
150	Vector3 axis;
151	float angle;
152
153	if (sscanf(ptr, "%f %f %f %f", &axis.x, &axis.y, &axis.z, &angle) == 4)
154	{
155	Matrix4x4 rot = RotationAxisMatrix(axis, angle);
156	currentTransform *= rot;
157	}
158	}
159	else if (attrName == "translation")
160	{
161	Vector3 transl;
162
163	if (sscanf(ptr, "%f %f %f %f", &transl.x, &transl.y, &transl.z) == 3)
164	{
165	Matrix4x4 tm = TranslationMatrix(transl);
166
167	currentTransform *= tm;
168	}
169	}
170	}
171
172	mTransformations.push(currentTransform);
173	}
174
175
176	void X3dParseHandlers::EndTransform()
177	{
178	mTransformations.pop();
179	}
180
181
182	void
183	X3dParseHandlers::EndShape()
184	{
185	if (mLoadPolygonsAsMeshes)
186	{
187	vector<VertexIndexContainer>::const_iterator it, it_end = mCurrentVertexIndices.end();
188
189	for (it = mCurrentVertexIndices.begin(); it != it_end; ++ it)
190	{
191	// only one face per mesh
192	Mesh *mesh = new Mesh();
193
194	VertexIndexContainer vc;
195
196	// add vertices
197	for (int i = 0; i < (int)(*it).size(); ++ i)
198	{
199	mesh->mVertices.push_back(mCurrentVertices[(*it)[i]]);
200	vc.push_back(i);
201	}
202
203	mesh->mFaces.push_back(new Face(vc));
204
205	// NOTE: should rather be written into trafo of mesh instance
206	ApplyTransformations(mTransformations, mesh);
207
208	mesh->Preprocess();
209	// make an instance of this mesh
210	MeshInstance *mi = new MeshInstance(mesh);
211	mCurrentNode->mGeometry.push_back(mi);
212
213	}
214
215	delete mCurrentMesh;
216	mCurrentVertices.clear();
217	mCurrentVertexIndices.clear();
218	}
219	else
220	{
221	if (mCurrentMesh->mFaces.size())
222	{
223	// should rather be written into the transformation
224	// of a mesh instance
225	ApplyTransformations(mTransformations, mCurrentMesh);
226
227	mCurrentMesh->Preprocess();
228	// make an instance of this mesh
229	MeshInstance *mi = new MeshInstance(mCurrentMesh);
230	mCurrentNode->mGeometry.push_back(mi);
231	// set the object id to a unique value
232	//mi->SetId(mCurrentObjectId ++);
233	}
234	else
235	{
236	cout<<"X";
237	delete mCurrentMesh;
238	}
239
240	mCurrentMesh = NULL;
241	}
242	}
243
244
245	void
246	X3dParseHandlers::StartIndexedFaceSet(
247	AttributeList& attributes)
248	{
249	int len = attributes.getLength();
250	int i;
251	VertexIndexContainer vertices;
252
253	for (i=0; i < len; i++) {
254	string attrName(StrX(attributes.getName(i)).LocalForm());
255	if (attrName == "coordIndex") {
256	StrX attrValue(attributes.getValue(i));
257	// handle coordIndex
258	vertices.clear();
259	const char *ptr = attrValue.LocalForm();
260	char *endptr;
261	while(1) {
262	int index = strtol(ptr, &endptr, 10);
263	if (ptr == endptr \|\| index == -1) {
264	if (vertices.size() > 2) {
265	Face *face = new Face(vertices);
266
267	if (!mLoadPolygonsAsMeshes)
268	{
269	mCurrentMesh->mFaces.push_back(face);
270	}
271	else
272	// every polygon is a mesh
273	{
274	mCurrentVertexIndices.push_back(vertices);
275	}
276	}
277
278	vertices.clear();
279	if (ptr == endptr)
280	break;
281	} else {
282	vertices.push_back(index);
283	}
284	ptr = endptr;
285	}
286	}
287	}
288	}
289
290	void
291	X3dParseHandlers::StartMaterial(
292	AttributeList& attributes)
293	{
294	int len = attributes.getLength();
295	int i;
296	if (!mCurrentMesh->mMaterial)
297	mCurrentMesh->mMaterial = new Material;
298	for (i=0; i < len; i++) {
299	string attrName(StrX(attributes.getName(i)).LocalForm());
300	StrX attrValue(attributes.getValue(i));
301	const char *ptr = attrValue.LocalForm();
302	if (attrName == "diffuseColor") {
303	float r, g, b;
304	if (sscanf(ptr, "%f %f %f", &r, &g, &b) == 3)
305	mCurrentMesh->mMaterial->mDiffuseColor = RgbColor(r, g, b);
306	}
307	}
308	}
309
310	void
311	X3dParseHandlers::StartCoordinate(
312	AttributeList& attributes)
313	{
314	int len = attributes.getLength();
315
316	int i;
317	VertexContainer vertices;
318
319	for (i=0; i < len; i++)
320	{
321	string attrName(StrX(attributes.getName(i)).LocalForm());
322
323	if (attrName == "point")
324	{
325	StrX attrValue(attributes.getValue(i));
326
327
328	const char *ptr = attrValue.LocalForm();
329	char *endptr;
330
331
332	while (1)
333	{
334	float x = (float)strtod(ptr, &endptr);
335
336	if (ptr == endptr)
337	break;
338
339	ptr = endptr;
340
341	float y = (float)strtod(ptr, &endptr);
342
343	if (ptr == endptr)
344	break;
345
346	ptr = endptr;
347
348	float z = (float)strtod(ptr, &endptr);
349	if (ptr == endptr)
350	break;
351
352	ptr = endptr;
353
354	if (*ptr == ',')
355	ptr ++;
356
357	Vector3 v(x, y, z);
358	vertices.push_back(v);
359	}
360	if (mLoadPolygonsAsMeshes)
361	{
362	mCurrentVertices = vertices;
363	}
364	else
365	{
366	mCurrentMesh->mVertices = vertices;
367	}
368	}
369	}
370	}
371
372
373	void
374	X3dParseHandlers::startElement(const XMLCh* const name,
375	AttributeList& attributes)
376	{
377	StrX lname(name);
378	string element(lname.LocalForm());
379
380	if (element == "IndexedFaceSet") {
381	// create a new mesh node in the scene graph
382	StartIndexedFaceSet(attributes);
383	}
384
385	if (element == "Shape") {
386	cout << "+";
387	mCurrentMesh = new Mesh;
388	}
389
390	if (element == "Coordinate") {
391	if (mCurrentMesh)
392	StartCoordinate(attributes);
393	}
394
395	if (element == "Material") {
396	StartMaterial(attributes);
397	}
398	if (1)
399	if (element == "Transform") {
400	StartTransform(attributes);
401	}
402
403	mElementCount++;
404	mAttrCount += attributes.getLength();
405	}
406
407	void
408	X3dParseHandlers::characters(const XMLCh* const chars,
409	const unsigned int length)
410	{
411	mCharacterCount += length;
412	}
413
414	void
415	X3dParseHandlers::ignorableWhitespace(const XMLCh* const chars,
416	const unsigned int length)
417	{
418	mSpaceCount += length;
419	}
420
421	void
422	X3dParseHandlers::resetDocument()
423	{
424	mAttrCount = 0;
425	mCharacterCount = 0;
426	mElementCount = 0;
427	mSpaceCount = 0;
428	}
429
430
431
432	// ---------------------------------------------------------------------------
433	// StdInParseHandlers: Overrides of the SAX ErrorHandler interface
434	// ---------------------------------------------------------------------------
435	void
436	X3dParseHandlers::error(const SAXParseException& e)
437	{
438	XERCES_STD_QUALIFIER cerr << "\nError at (file " << StrX(e.getSystemId())
439	<< ", line " << e.getLineNumber()
440	<< ", char " << e.getColumnNumber()
441	<< "): " << StrX(e.getMessage()) << XERCES_STD_QUALIFIER endl;
442	}
443
444	void
445	X3dParseHandlers::fatalError(const SAXParseException& e)
446	{
447	XERCES_STD_QUALIFIER cerr << "\nFatal Error at (file " << StrX(e.getSystemId())
448	<< ", line " << e.getLineNumber()
449	<< ", char " << e.getColumnNumber()
450	<< "): " << StrX(e.getMessage()) << XERCES_STD_QUALIFIER endl;
451	}
452
453	void
454	X3dParseHandlers::warning(const SAXParseException& e)
455	{
456	XERCES_STD_QUALIFIER cerr << "\nWarning at (file " << StrX(e.getSystemId())
457	<< ", line " << e.getLineNumber()
458	<< ", char " << e.getColumnNumber()
459	<< "): " << StrX(e.getMessage()) << XERCES_STD_QUALIFIER endl;
460	}
461
462
463	bool
464	X3dParser::ParseFile(const string filename,
465	SceneGraphNode **root,
466	const bool loadPolygonsAsMeshes)
467	{
468	// Initialize the XML4C system
469	try {
470	XMLPlatformUtils::Initialize();
471	}
472
473	catch (const XMLException& toCatch)
474	{
475	XERCES_STD_QUALIFIER cerr << "Error during initialization! Message:\n"
476	<< StrX(toCatch.getMessage()) << XERCES_STD_QUALIFIER endl;
477	return false;
478	}
479
480
481	//
482	// Create a SAX parser object. Then, according to what we were told on
483	// the command line, set the options.
484	//
485	SAXParser* parser = new SAXParser;
486	parser->setValidationScheme(valScheme);
487	parser->setDoNamespaces(doNamespaces);
488	parser->setDoSchema(doSchema);
489	parser->setValidationSchemaFullChecking(schemaFullChecking);
490
491
492	//
493	// Create our SAX handler object and install it on the parser, as the
494	// document and error handler. We are responsible for cleaning them
495	// up, but since its just stack based here, there's nothing special
496	// to do.
497	//
498	*root = new SceneGraphNode;
499	X3dParseHandlers handler(*root, loadPolygonsAsMeshes);
500	parser->setDocumentHandler(&handler);
501	parser->setErrorHandler(&handler);
502
503	unsigned long duration;
504	int errorCount = 0;
505	// create a faux scope so that 'src' destructor is called before
506	// XMLPlatformUtils::Terminate
507	{
508	//
509	// Kick off the parse and catch any exceptions. Create a standard
510	// input input source and tell the parser to parse from that.
511	//
512	// StdInInputSource src;
513	try
514	{
515	const unsigned long startMillis = XMLPlatformUtils::getCurrentMillis();
516	parser->parse(filename.c_str());
517	const unsigned long endMillis = XMLPlatformUtils::getCurrentMillis();
518	duration = endMillis - startMillis;
519	errorCount = parser->getErrorCount();
520	}
521	catch (const OutOfMemoryException&)
522	{
523	XERCES_STD_QUALIFIER cerr << "OutOfMemoryException" << XERCES_STD_QUALIFIER endl;
524	errorCount = 2;
525	return false;
526	}
527	catch (const XMLException& e)
528	{
529	XERCES_STD_QUALIFIER cerr << "\nError during parsing: \n"
530	<< StrX(e.getMessage())
531	<< "\n" << XERCES_STD_QUALIFIER endl;
532	errorCount = 1;
533	return false;
534	}
535
536
537	// Print out the stats that we collected and time taken
538	if (!errorCount) {
539	XERCES_STD_QUALIFIER cout << filename << ": " << duration << " ms ("
540	<< handler.GetElementCount() << " elems, "
541	<< handler.GetAttrCount() << " attrs, "
542	<< handler.GetSpaceCount() << " spaces, "
543	<< handler.GetCharacterCount() << " chars)" << XERCES_STD_QUALIFIER endl;
544	}
545	}
546
547	//
548	// Delete the parser itself. Must be done prior to calling Terminate, below.
549	//
550	delete parser;
551
552	XMLPlatformUtils::Terminate();
553
554	if (errorCount > 0)
555	return false;
556	else
557	return true;
558	}
559
560
561
562	/************************************************************************/
563	/* class X3dViewCellsParseHandlers implementation */
564	/************************************************************************/
565
566
567	// ---------------------------------------------------------------------------
568	// StdInParseHandlers: Constructors and Destructor
569	// ---------------------------------------------------------------------------
570	X3dViewCellsParseHandlers::X3dViewCellsParseHandlers(ViewCellsManager *viewCellsManager,
571	const float viewCellHeight):
572	mElementCount(0),
573	mAttrCount(0),
574	mCharacterCount(0),
575	mSpaceCount(0),
576	mViewCellsManager(viewCellsManager),
577	mViewCellHeight(viewCellHeight)
578	{
579	}
580
581	X3dViewCellsParseHandlers::~X3dViewCellsParseHandlers()
582	{
583	}
584
585
586	// ---------------------------------------------------------------------------
587	// StdInParseHandlers: Implementation of the SAX DocumentHandler interface
588	// ---------------------------------------------------------------------------
589	void X3dViewCellsParseHandlers::endElement(const XMLCh* const name)
590	{
591	StrX lname(name);
592	string element(lname.LocalForm());
593
594	if (element == "Shape")
595	EndShape();
596	}
597
598	void
599	X3dViewCellsParseHandlers::EndShape()
600	{
601	}
602
603	void
604	X3dViewCellsParseHandlers::StartIndexedFaceSet(
605	AttributeList& attributes)
606	{
607	int len = attributes.getLength();
608	int i;
609	// clear previous vertex indices
610	mCurrentVertexIndices.clear();
611	for (i=0; i < len; i++)
612	{
613	string attrName(StrX(attributes.getName(i)).LocalForm());
614
615	if (attrName == "coordIndex")
616	{
617	StrX attrValue(attributes.getValue(i));
618
619	// handle coordIndex
620	const char *ptr = attrValue.LocalForm();
621	char *endptr;
622
623	while (1)
624	{
625	int index = strtol(ptr, &endptr, 10);
626
627	if (ptr == endptr)
628	break;
629
630	if (index != -1)
631	{
632	mCurrentVertexIndices.push_back(index);
633	}
634
635	ptr = endptr;
636	}
637	}
638	}
639	}
640
641
642	void
643	X3dViewCellsParseHandlers::StartCoordinate(AttributeList& attributes)
644	{
645	int len = attributes.getLength();
646
647	VertexContainer vertices;
648	int i;
649	for (i=0; i < len; i++)
650	{
651	string attrName(StrX(attributes.getName(i)).LocalForm());
652
653	if (attrName == "point")
654	{
655	StrX attrValue(attributes.getValue(i));
656
657	const char *ptr = attrValue.LocalForm();
658
659	char *endptr;
660
661	while (1)
662	{
663	float x = (float)strtod(ptr, &endptr);
664
665	if (ptr == endptr)
666	break;
667	ptr = endptr;
668
669	float y = (float)(float)strtod(ptr, &endptr);
670
671
672	if (ptr == endptr)
673	break;
674	ptr = endptr;
675
676	float z = (float)(float)strtod(ptr, &endptr);
677
678	if (ptr == endptr)
679	break;
680
681	ptr = endptr;
682	if (*ptr == ',')
683	ptr++;
684
685	Vector3 v(x, y, z);
686	vertices.push_back(v);
687	}
688	}
689	}
690
691	for (i = 0; i < mCurrentVertexIndices.size(); i += 3)
692	{
693	Triangle3 baseTri(vertices[mCurrentVertexIndices[i + 0]],
694	vertices[mCurrentVertexIndices[i + 1]],
695	vertices[mCurrentVertexIndices[i + 2]]);
696
697	// create view cell from base triangle
698	mViewCellsManager->AddViewCell(
699	mViewCellsManager->ExtrudeViewCell(baseTri,
700	mViewCellHeight));
701	}
702	}
703
704
705	void
706	X3dViewCellsParseHandlers::startElement(const XMLCh* const name,
707	AttributeList& attributes)
708	{
709	StrX lname(name);
710	string element(lname.LocalForm());
711
712	if (element == "IndexedFaceSet") {
713	// create the viewcells from individual triangles
714	StartIndexedFaceSet(attributes);
715	}
716
717	if (element == "Coordinate") {
718	// add coordinates to the triangles
719	StartCoordinate(attributes);
720	}
721	// do nothing
722	//if (element == "Shape") {}
723	// ignore material
724	//if (element == "Material") {}
725
726	++ mElementCount;
727	mAttrCount += attributes.getLength();
728	}
729
730	void
731	X3dViewCellsParseHandlers::characters(const XMLCh* const chars,
732	const unsigned int length)
733	{
734	mCharacterCount += length;
735	}
736
737	void
738	X3dViewCellsParseHandlers::ignorableWhitespace(const XMLCh* const chars,
739	const unsigned int length)
740	{
741	mSpaceCount += length;
742	}
743
744	void
745	X3dViewCellsParseHandlers::resetDocument()
746	{
747	mAttrCount = 0;
748	mCharacterCount = 0;
749	mElementCount = 0;
750	mSpaceCount = 0;
751	}
752
753
754
755	// ---------------------------------------------------------------------------
756	// StdInParseHandlers: Overrides of the SAX ErrorHandler interface
757	// ---------------------------------------------------------------------------
758	void
759	X3dViewCellsParseHandlers::error(const SAXParseException& e)
760	{
761	XERCES_STD_QUALIFIER cerr << "\nError at (file " << StrX(e.getSystemId())
762	<< ", line " << e.getLineNumber()
763	<< ", char " << e.getColumnNumber()
764	<< "): " << StrX(e.getMessage()) << XERCES_STD_QUALIFIER endl;
765	}
766
767	void
768	X3dViewCellsParseHandlers::fatalError(const SAXParseException& e)
769	{
770	XERCES_STD_QUALIFIER cerr << "\nFatal Error at (file " << StrX(e.getSystemId())
771	<< ", line " << e.getLineNumber()
772	<< ", char " << e.getColumnNumber()
773	<< "): " << StrX(e.getMessage()) << XERCES_STD_QUALIFIER endl;
774	}
775
776	void
777	X3dViewCellsParseHandlers::warning(const SAXParseException& e)
778	{
779	XERCES_STD_QUALIFIER cerr << "\nWarning at (file " << StrX(e.getSystemId())
780	<< ", line " << e.getLineNumber()
781	<< ", char " << e.getColumnNumber()
782	<< "): " << StrX(e.getMessage()) << XERCES_STD_QUALIFIER endl;
783	}
784
785
786	bool
787	X3dParser::ParseFile(const string filename, ViewCellsManager &viewCells)
788	{
789	// Initialize the XML4C system
790	try {
791	XMLPlatformUtils::Initialize();
792	}
793
794	catch (const XMLException& toCatch)
795	{
796	XERCES_STD_QUALIFIER cerr << "Error during initialization! Message:\n"
797	<< StrX(toCatch.getMessage()) << XERCES_STD_QUALIFIER endl;
798	return false;
799	}
800
801
802	//
803	// Create a SAX parser object. Then, according to what we were told on
804	// the command line, set the options.
805	//
806	SAXParser* parser = new SAXParser;
807	parser->setValidationScheme(valScheme);
808	parser->setDoNamespaces(doNamespaces);
809	parser->setDoSchema(doSchema);
810	parser->setValidationSchemaFullChecking(schemaFullChecking);
811
812
813	//
814	// Create our SAX handler object and install it on the parser, as the
815	// document and error handler. We are responsible for cleaning them
816	// up, but since its just stack based here, there's nothing special
817	// to do.
818	//
819	X3dViewCellsParseHandlers handler(&viewCells, mViewCellHeight);
820	parser->setDocumentHandler(&handler);
821	parser->setErrorHandler(&handler);
822
823	unsigned long duration;
824	int errorCount = 0;
825	// create a faux scope so that 'src' destructor is called before
826	// XMLPlatformUtils::Terminate
827	{
828	//
829	// Kick off the parse and catch any exceptions. Create a standard
830	// input input source and tell the parser to parse from that.
831	//
832	// StdInInputSource src;
833	try
834	{
835	const unsigned long startMillis = XMLPlatformUtils::getCurrentMillis();
836	parser->parse(filename.c_str());
837	const unsigned long endMillis = XMLPlatformUtils::getCurrentMillis();
838	duration = endMillis - startMillis;
839	errorCount = parser->getErrorCount();
840	}
841	catch (const OutOfMemoryException&)
842	{
843	XERCES_STD_QUALIFIER cerr << "OutOfMemoryException" << XERCES_STD_QUALIFIER endl;
844	errorCount = 2;
845	return false;
846	}
847	catch (const XMLException& e)
848	{
849	XERCES_STD_QUALIFIER cerr << "\nError during parsing: \n"
850	<< StrX(e.getMessage())
851	<< "\n" << XERCES_STD_QUALIFIER endl;
852	errorCount = 1;
853	return false;
854	}
855
856
857	// Print out the stats that we collected and time taken
858	if (!errorCount) {
859	XERCES_STD_QUALIFIER cout << filename << ": " << duration << " ms ("
860	<< handler.GetElementCount() << " elems, "
861	<< handler.GetAttrCount() << " attrs, "
862	<< handler.GetSpaceCount() << " spaces, "
863	<< handler.GetCharacterCount() << " chars)" << XERCES_STD_QUALIFIER endl;
864	}
865	}
866
867	//
868	// Delete the parser itself. Must be done prior to calling Terminate, below.
869	//
870	delete parser;
871
872	XMLPlatformUtils::Terminate();
873
874	if (errorCount > 0)
875	return false;
876	else
877	return true;
878	}

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