Redirect.cpp
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上传日期:2007-01-10
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- /*
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 1999-2000 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Xerces" and "Apache Software Foundation" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * nor may "Apache" appear in their name, without prior written
- * permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation, and was
- * originally based on software copyright (c) 1999, International
- * Business Machines, Inc., http://www.ibm.com . For more information
- * on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
- /**
- *
- * This simplistic sample illustrates how an XML application can use
- * the SAX entityResolver handler to provide customized handling for
- * external entities.
- *
- * It registers an entity resolver with the parser. When ever the parser
- * comes across an external entity, like a reference to an external DTD
- * file, it calls the 'resolveEntity()' callback. This callback in this
- * sample checks to see if the external entity to be resolved is the file
- * 'personal.dtd'.
- *
- * If it is then, it redirects the input stream to the file 'redirect.dtd',
- * which is then read instead of 'personal.dtd'.
- *
- * If the external entity to be resolved was not the file 'personal.dtd', the
- * callback returns NULL indicating that do the default behaviour which is
- * to read the contents of 'personal.dtd'.
- *
- * $Log: Redirect.cpp,v $
- * Revision 1.6 2001/10/25 15:18:33 tng
- * delete the parser before XMLPlatformUtils::Terminate.
- *
- * Revision 1.5 2001/10/19 19:02:42 tng
- * [Bug 3909] return non-zero an exit code when error was encounted.
- * And other modification for consistent help display and return code across samples.
- *
- * Revision 1.4 2000/05/31 18:53:15 rahulj
- * Removed extraneous command line arguments.
- *
- * Revision 1.3 2000/02/11 02:38:28 abagchi
- * Removed StrX::transcode
- *
- * Revision 1.2 2000/02/06 07:47:21 rahulj
- * Year 2K copyright swat.
- *
- * Revision 1.1.1.1 1999/11/09 01:09:37 twl
- * Initial checkin
- *
- * Revision 1.6 1999/11/08 20:43:39 rahul
- * Swat for adding in Product name and CVS comment log variable.
- *
- */
- // ---------------------------------------------------------------------------
- // Includes
- // ---------------------------------------------------------------------------
- #include <parsers/SAXParser.hpp>
- #include "Redirect.hpp"
- // ---------------------------------------------------------------------------
- // Local helper methods
- // ---------------------------------------------------------------------------
- void usage()
- {
- cout << "nUsage:n"
- " Redirect <XML file>nn"
- "This program installs an entity resolver, traps the call ton"
- "the external DTD file and redirects it to another applicationn"
- "specific file which contains the actual dtd.nn"
- "The program then counts and reports the number of elements andn"
- "attributes in the given XML file.n"
- << endl;
- }
- // ---------------------------------------------------------------------------
- // Program entry point
- // ---------------------------------------------------------------------------
- int main(int argc, char* args[])
- {
- // Initialize the XML4C system
- try
- {
- XMLPlatformUtils::Initialize();
- }
- catch (const XMLException& toCatch)
- {
- cerr << "Error during initialization! Message:n"
- << StrX(toCatch.getMessage()) << endl;
- return 1;
- }
- // We only have one parameter, which is the file to process
- // We only have one required parameter, which is the file to process
- if ((argc != 2) || (*(args[1]) == '-'))
- {
- usage();
- XMLPlatformUtils::Terminate();
- return 1;
- }
- const char* xmlFile = args[1];
- //
- // 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;
- //
- // Create our SAX handler object and install it on the parser, as the
- // document, entity and error handlers.
- //
- RedirectHandlers handler;
- parser->setDocumentHandler(&handler);
- parser->setErrorHandler(&handler);
- parser->setEntityResolver(&handler);
- //
- // 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;
- try
- {
- const unsigned long startMillis = XMLPlatformUtils::getCurrentMillis();
- parser->parse(xmlFile);
- const unsigned long endMillis = XMLPlatformUtils::getCurrentMillis();
- duration = endMillis - startMillis;
- errorCount = parser->getErrorCount();
- }
- catch (const XMLException& e)
- {
- cerr << "nError during parsing: '" << xmlFile << "'n"
- << "Exception message is: n"
- << StrX(e.getMessage()) << "n" << endl;
- XMLPlatformUtils::Terminate();
- return 4;
- }
- // Print out the stats that we collected and time taken.
- if (!errorCount) {
- cout << xmlFile << ": " << duration << " ms ("
- << handler.getElementCount() << " elems, "
- << handler.getAttrCount() << " attrs, "
- << handler.getSpaceCount() << " spaces, "
- << handler.getCharacterCount() << " chars)" << endl;
- }
- //
- // Delete the parser itself. Must be done prior to calling Terminate, below.
- //
- delete parser;
- XMLPlatformUtils::Terminate();
- if (errorCount > 0)
- return 4;
- else
- return 0;
- }