Hi Alberto, Thanks, at least I know now. Could I suggest that maybe someone should strengthen the doc there--make it just a bit more clear.
Thanks! -----Original Message----- From: Alberto Massari (JIRA) [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 08, 2005 1:43 AM To: Bob Freitas Subject: [jira] Resolved: (XERCESC-1364) Cores when using XercesDOMParser::getSrcOffset() [ http://issues.apache.org/jira/browse/XERCESC-1364?page=history ] Alberto Massari resolved XERCESC-1364: -------------------------------------- Resolution: Invalid Bob, the getSrcOffset API returns the offset in the source stream during the parse phase; invoking it after parse() returns produces an undefined behaviour. Alberto > Cores when using XercesDOMParser::getSrcOffset() > ------------------------------------------------ > > Key: XERCESC-1364 > URL: http://issues.apache.org/jira/browse/XERCESC-1364 > Project: Xerces-C++ > Type: Bug > Components: DOM > Versions: 2.6.0 > Environment: Solaris 2.8, Ultra 5, gcc 3.3.2 > Reporter: Bob Freitas > > I want to do some additional checking on the info in the XML document, so naturally I am going to need to communicate to the end-user. I was planning on using the getSrcOffset() method to get an idea of where I was parsing in the XML. Unfortunately, the getSrcOffset() just cores when I try to use it. Here is more or less what I am doing in my code. I had to cut and paste from a bunch of different objects to get it in one place. I tried to include everything pertinent: > // in the header file > xercesc::XercesDOMParser* parser; > xercesc::DOMDocument* doc; > DOMParseErrorHandler* saxErrorHandler; // home grown object > typedef vector<xercesc::DOMNode*> ElementCollection; > // basic flow of program, only in mine spread over multiple objects > parser = new xercesc::XercesDOMParser(); > saxErrorHandler = new DOMParseErrorHandler(); > parser->setErrorHandler(saxErrorHandler); > parser->setCalculateSrcOfs(true); > ... do a bunch of my own stuff > const char* fileName; // gets received as a parameter > > try > { > parser->parse( fileName ); > } > catch (const xercesc::XMLException& e) > { > ... do a whole bunch of catches and stuff here > } > > doc = parser->getDocument(); > xercesc::DOMElement* root = doc->getDocumentElement(); > ElementCollection eleColl; > if ( !getChildren(doc, root, &eleColl) ) > { > return DOM_TREE_NO_READ; // defined in a separate enum > } > > ElementCollection::iterator nodeIter; > ElementCollection::iterator nodeIterEnd = eleColl.end(); > for(nodeIter = eleColl.begin(); nodeIter != nodeIterEnd; ++nodeIter) > { > xercesc::DOMNode* node = *nodeIter; > xercesc::DOMElement* ele = (xercesc::DOMElement*)node; > const XMLCh* nodeName = ele->getNodeName(); > > ... look for my XML tags of interest and process them > > unsigned int offset = parser->getSrcOffset(); > // cores on the above statement, see below for gdb trace > > > } > > bool getChildren(xercesc::DOMDocument* doc, > xercesc::DOMElement* parent, ElementCollection* eleColl) > { > if ( doc == NULL ) > { > Log(ERROR, ("Unable to read DOM tree, doc is empty"); > return false; > } > if ( parent == NULL ) > { > Log(ERROR, (char*)"Unable to read DOM tree, parent element is empty"); > return false; > } > assert( eleColl != NULL ); > > xercesc::DOMTreeWalker* walker = doc->createTreeWalker(parent, > xercesc::DOMNodeFilter::SHOW_ELEMENT, NULL, true); > if ( walker == NULL ) > { > Log(ERROR, (char*)"Unable to read DOM tree, error creating tree walker"); > return false; > } > xercesc::DOMNode* node; > if ( ( node=walker->firstChild() ) != NULL ) > { > while ( node != NULL ) > { > eleColl->push_back(node); > node = walker->nextSibling(); > } > } > if ( walker != NULL ) > { > walker->release(); > } > return true; > } > ------------------------------------ > gdb trace after core: > (gdb) bt 10 > #0 xercesc_2_6::XMLString::replicate(char const*, xercesc_2_6::MemoryManager*) > (toRep=0xfef44320 "XMLReader.cpp", manager=0x82100008) at XMLString.cpp:511 > #1 0xfee0dabc in xercesc_2_6::XMLException::XMLException(char const*, unsigned, xercesc_2_6::MemoryManager*) (this=0x6f8d0, > srcFile=0xfef44320 "XMLReader.cpp", srcLine=400, memoryManager=0x82100008) > at XMLException.cpp:146 > #2 0xfee14288 in xercesc_2_6::XMLReader::getSrcOffset() const (this=0x6f8d0) > at /tmp/xerces-c-src_2_6_0/include/xercesc/util/RuntimeException.hpp:30 > Current language: auto; currently c++ > (gdb) quit -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - If you want more information on JIRA, or have a bug to report see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
