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xml_parser.hh
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/**
* @file xml_parser.hh
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
*
* @date Wed Aug 20 16:58:08 2014
*
* @brief An xml parser class for dump files in that format
*
* @section LICENSE
*
* Copyright INRIA and CEA
*
* The LibMultiScale is a C++ parallel framework for the multiscale
* coupling methods dedicated to material simulations. This framework
* provides an API which makes it possible to program coupled simulations
* and integration of already existing codes.
*
* This Project was initiated in a collaboration between INRIA Futurs Bordeaux
* within ScAlApplix team and CEA/DPTA Ile de France.
* The project is now continued at the Ecole Polytechnique Fédérale de Lausanne
* within the LSMS/ENAC laboratory.
*
* This software is governed by the CeCILL-C license under French law and
* abiding by the rules of distribution of free software. You can use,
* modify and/ or redistribute the software under the terms of the CeCILL-C
* license as circulated by CEA, CNRS and INRIA at the following URL
* "http://www.cecill.info".
*
* As a counterpart to the access to the source code and rights to copy,
* modify and redistribute granted by the license, users are provided only
* with a limited warranty and the software's author, the holder of the
* economic rights, and the successive licensors have only limited
* liability.
*
* In this respect, the user's attention is drawn to the risks associated
* with loading, using, modifying and/or developing or reproducing the
* software by the user in light of its specific status of free software,
* that may mean that it is complicated to manipulate, and that also
* therefore means that it is reserved for developers and experienced
* professionals having in-depth computer knowledge. Users are therefore
* encouraged to load and test the software's suitability as regards their
* requirements in conditions enabling the security of their systems and/or
* data to be ensured and, more generally, to use and operate it in the
* same conditions as regards security.
*
* The fact that you are presently reading this means that you have had
* knowledge of the CeCILL-C license and that you accept its terms.
*
*/
#ifndef __LIBMULTISCALE_XML_PARSER_HH__
#define __LIBMULTISCALE_XML_PARSER_HH__
/* -------------------------------------------------------------------------- */
#include "lm_common.hh"
#include "lm_file.hh"
#include <expat.h>
#include <fstream>
/* -------------------------------------------------------------------------- */
__BEGIN_LIBMULTISCALE__
/* -------------------------------------------------------------------------- */
static void XMLCALL char_handler(void *userData, const XML_Char *s, int len);
static void XMLCALL start_element(void *userData, const char *name,
const char **atts);
static void XMLCALL end_element(void *userData, const char *name);
/* -------------------------------------------------------------------------- */
class XMLParser {
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public:
XMLParser() {
parser = XML_ParserCreate(NULL);
XML_SetUserData(parser, this);
XML_SetElementHandler(parser, start_element, end_element);
XML_SetCharacterDataHandler(parser, char_handler);
}
virtual ~XMLParser() { XML_ParserFree(parser); }
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
virtual UInt parseFile(const std::string &name,
bool restart_continue_if_notfound) {
try {
char buf[BUFSIZ];
LMFile file(name, "rb", true);
while (file.gets(buf, sizeof(buf)) != NULL) {
UInt len = strlen(buf);
UInt done = 0;
DUMP("sending (" << buf << ") to parser", DBG_DETAIL);
if (XML_Parse(parser, buf, len, done) == XML_STATUS_ERROR) {
DUMP(XML_ErrorString(XML_GetErrorCode(parser))
<< " at line " << XML_GetCurrentLineNumber(parser),
DBG_MESSAGE);
return 1;
}
}
file.close();
return 0;
} catch (LibMultiScaleException &e) {
if (!restart_continue_if_notfound) {
LM_FATAL(e.what());
} else
return 1;
}
}
protected:
friend void XMLCALL char_handler(void *userData, const XML_Char *s, int len);
friend void XMLCALL start_element(void *userData, const char *name,
const char **atts);
friend void XMLCALL end_element(void *userData, const char *name);
virtual void charHandler(const XML_Char *s, int len) = 0;
virtual void startElement(const char *name, const char **atts) = 0;
virtual void endElement(const char *name) = 0;
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
XML_Parser parser;
};
/* -------------------------------------------------------------------------- */
static inline void XMLCALL char_handler(void *userData, const XML_Char *s,
int len) {
XMLParser *obj = (XMLParser *)userData;
obj->charHandler(s, len);
}
/* -------------------------------------------------------------------------- */
static inline void XMLCALL start_element(void *userData, const char *name,
const char **atts) {
XMLParser *obj = (XMLParser *)userData;
obj->startElement(name, atts);
}
/* -------------------------------------------------------------------------- */
static inline void XMLCALL end_element(void *userData, const char *name) {
XMLParser *obj = (XMLParser *)userData;
obj->endElement(name);
}
/* -------------------------------------------------------------------------- */
__END_LIBMULTISCALE__
/* -------------------------------------------------------------------------- */
#endif /* __LIBMULTISCALE_XML_PARSER_HH__ */

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