/* * Copyright 1999-2001,2004 The Apache Software Foundation. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /* * $Log: MemParse.cpp,v $ * Revision 1.18 2004/09/08 13:55:32 peiyongz * Apache License Version 2.0 * * Revision 1.17 2004/09/02 14:59:28 cargilld * Add OutOfMemoryException block to samples. * * Revision 1.16 2003/09/12 18:14:19 neilg * enable MemParse to work on OS400; thanks to Jay Hansen. * * Revision 1.15 2003/08/07 21:21:38 neilg * fix segmentation faults that may arise when the parser throws exceptions during document parsing. In general, XMLPlatformUtils::Terminate() should not be called from within a catch statement. * * Revision 1.14 2003/05/30 09:36:35 gareth * Use new macros for iostream.h and std:: issues. * * Revision 1.13 2002/02/01 22:37:14 peiyongz * sane_include * * Revision 1.12 2001/10/25 15:18:33 tng * delete the parser before XMLPlatformUtils::Terminate. * * Revision 1.11 2001/10/19 18:56:08 tng * Pulled the hardcoded "encoding" out of the document itself and made it a #define * to make it easier to support other encodings. Patch from David McCreedy. * And other modification for consistent help display and return code across samples. * * Revision 1.10 2001/08/01 19:11:01 tng * Add full schema constraint checking flag to the samples and the parser. * * Revision 1.9 2001/05/11 13:24:55 tng * Copyright update. * * Revision 1.8 2001/05/03 15:59:40 tng * Schema: samples update with schema * * Revision 1.7 2000/09/11 18:43:48 aruna1 * OS390 related updates * * Revision 1.6 2000/03/02 19:53:42 roddey * This checkin includes many changes done while waiting for the * 1.1.0 code to be finished. I can't list them all here, but a list is * available elsewhere. * * Revision 1.5 2000/02/11 02:37:01 abagchi * Removed StrX::transcode * * Revision 1.4 2000/02/06 07:47:19 rahulj * Year 2K copyright swat. * * Revision 1.3 2000/01/12 00:27:00 roddey * Updates to work with the new URL and input source scheme. * * Revision 1.2 1999/11/20 01:09:55 rahulj * Fixed usage message. * * Revision 1.1.1.1 1999/11/09 01:09:49 twl * Initial checkin * * Revision 1.7 1999/11/08 20:43:36 rahul * Swat for adding in Product name and CVS comment log variable. * */ /** * This sample program illustrates how one can use a memory buffer as the * input to parser. The memory buffer contains raw bytes representing XML * statements. * * Look at the API documentation for 'MemBufInputSource' for more information * on parameters to the constructor. * */ // --------------------------------------------------------------------------- // Includes // --------------------------------------------------------------------------- #include #include #include "MemParse.hpp" #include // --------------------------------------------------------------------------- // Local const data // // gXMLInMemBuf // Defines the memory buffer contents here which parsed by the XML // parser. This is the cheap way to do it, instead of reading it from // somewhere. For this demo, its fine. // // NOTE: If your encoding is not ascii you will need to change // the MEMPARSE_ENCODING #define // // gMemBufId // A simple name to give as the system id for the memory buffer. This // just for indentification purposes in case of errors. Its not a real // system id (and the parser knows that.) // --------------------------------------------------------------------------- #ifndef MEMPARSE_ENCODING #if defined(OS390) #define MEMPARSE_ENCODING "ibm-1047-s390" #elif defined(OS400) #define MEMPARSE_ENCODING "ibm037" #else #define MEMPARSE_ENCODING "ascii" #endif #endif /* ifndef MEMPARSE_ENCODING */ static const char* gXMLInMemBuf = "\ \n\ \n\ \n\ \n\ \n\ \n\ ]>\n\n\ \n\ XML4C\n\ XML Parsing Tools\n\ \n\ IBM Center for Java Technology, Silicon Valley, Cupertino, CA\n\ \n\ \ "; static const char* gMemBufId = "prodInfo"; // --------------------------------------------------------------------------- // Local helper methods // --------------------------------------------------------------------------- void usage() { XERCES_STD_QUALIFIER cout << "\nUsage:\n" " MemParse [options]\n\n" "This program uses the SAX Parser to parse a memory buffer\n" "containing XML statements, and reports the number of\n" "elements and attributes found.\n\n" "Options:\n" " -v=xxx Validation scheme [always | never | auto*].\n" " -n Enable namespace processing. Defaults to off.\n" " -s Enable schema processing. Defaults to off.\n" " -f Enable full schema constraint checking. Defaults to off.\n" " -? Show this help.\n\n" " * = Default if not provided explicitly.\n" << XERCES_STD_QUALIFIER endl; } // --------------------------------------------------------------------------- // Program entry point // --------------------------------------------------------------------------- int main(int argC, char* argV[]) { // Initialize the XML4C2 system try { XMLPlatformUtils::Initialize(); } catch (const XMLException& toCatch) { XERCES_STD_QUALIFIER cerr << "Error during initialization! Message:\n" << StrX(toCatch.getMessage()) << XERCES_STD_QUALIFIER endl; return 1; } SAXParser::ValSchemes valScheme = SAXParser::Val_Auto; bool doNamespaces = false; bool doSchema = false; bool schemaFullChecking = false; int argInd; for (argInd = 1; argInd < argC; argInd++) { // Break out on first parm not starting with a dash if (argV[argInd][0] != '-') { usage(); XMLPlatformUtils::Terminate(); return 1; } // Watch for special case help request if (!strcmp(argV[argInd], "-?")) { usage(); XMLPlatformUtils::Terminate(); return 1; } else if (!strncmp(argV[argInd], "-v=", 3) || !strncmp(argV[argInd], "-V=", 3)) { const char* const parm = &argV[argInd][3]; if (!strcmp(parm, "never")) valScheme = SAXParser::Val_Never; else if (!strcmp(parm, "auto")) valScheme = SAXParser::Val_Auto; else if (!strcmp(parm, "always")) valScheme = SAXParser::Val_Always; else { XERCES_STD_QUALIFIER cerr << "Unknown -v= value: " << parm << XERCES_STD_QUALIFIER endl; return 2; } } else if (!strcmp(argV[argInd], "-n") || !strcmp(argV[argInd], "-N")) { doNamespaces = true; } else if (!strcmp(argV[argInd], "-s") || !strcmp(argV[argInd], "-S")) { doSchema = true; } else if (!strcmp(argV[argInd], "-f") || !strcmp(argV[argInd], "-F")) { schemaFullChecking = true; } else { XERCES_STD_QUALIFIER cerr << "Unknown option '" << argV[argInd] << "', ignoring it\n" << XERCES_STD_QUALIFIER endl; } } // // Create a SAX parser object. Then, according to what we were told on // the command line, set it to validate or not. // SAXParser* parser = new SAXParser; parser->setValidationScheme(valScheme); parser->setDoNamespaces(doNamespaces); parser->setDoSchema(doSchema); parser->setValidationSchemaFullChecking(schemaFullChecking); // // Create our SAX handler object and install it on the parser, as the // document and error handlers. // MemParseHandlers handler; parser->setDocumentHandler(&handler); parser->setErrorHandler(&handler); // // Create MemBufferInputSource from the buffer containing the XML // statements. // // NOTE: We are using strlen() here, since we know that the chars in // our hard coded buffer are single byte chars!!! The parameter wants // the number of BYTES, not chars, so when you create a memory buffer // give it the byte size (which just happens to be the same here.) // MemBufInputSource* memBufIS = new MemBufInputSource ( (const XMLByte*)gXMLInMemBuf , strlen(gXMLInMemBuf) , gMemBufId , false ); // // Get the starting time and kick off the parse of the indicated // file. Catch any exceptions that might propogate out of it. // unsigned long duration; int errorCount = 0; int errorCode = 0; try { const unsigned long startMillis = XMLPlatformUtils::getCurrentMillis(); parser->parse(*memBufIS); const unsigned long endMillis = XMLPlatformUtils::getCurrentMillis(); duration = endMillis - startMillis; errorCount = parser->getErrorCount(); } catch (const OutOfMemoryException&) { XERCES_STD_QUALIFIER cerr << "OutOfMemoryException" << XERCES_STD_QUALIFIER endl; errorCode = 5; } catch (const XMLException& e) { XERCES_STD_QUALIFIER cerr << "\nError during parsing memory stream:\n" << "Exception message is: \n" << StrX(e.getMessage()) << "\n" << XERCES_STD_QUALIFIER endl; errorCode = 4; } if(errorCode) { XMLPlatformUtils::Terminate(); return errorCode; } // Print out the stats that we collected and time taken. if (!errorCount) { XERCES_STD_QUALIFIER cout << "\nFinished parsing the memory buffer containing the following " << "XML statements:\n\n" << gXMLInMemBuf << "\n\n\n" << "Parsing took " << duration << " ms (" << handler.getElementCount() << " elements, " << handler.getAttrCount() << " attributes, " << handler.getSpaceCount() << " spaces, " << handler.getCharacterCount() << " characters).\n" << XERCES_STD_QUALIFIER endl; } // // Delete the parser itself. Must be done prior to calling Terminate, below. // delete parser; delete memBufIS; // And call the termination method XMLPlatformUtils::Terminate(); if (errorCount > 0) return 4; else return 0; }