| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 2001 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 "Xalan" 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) 2001, International |
| * Business Machines Corporation., http://www.ibm.com. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| package org.apache.env; |
| |
| import java.lang.reflect.Field; |
| |
| import java.util.Hashtable; |
| |
| /** |
| * Get Version information about xml-xerces. |
| * @author shane_curcuru@us.ibm.com |
| * @version $Id: WhichXerces.java 226032 2003-01-10 21:29:08Z curcuru $ |
| */ |
| public class WhichXerces implements WhichProject |
| { |
| |
| /** Our project name. */ |
| public static final String SERVICE_NAME = "Xerces"; |
| |
| /** The Xerces-J implementation jar. */ |
| private static final String XERCES_JARNAME = "xerces.jar"; |
| |
| /** The new Xerces-J implementation jar. */ |
| private static final String XERCESIMPL_JARNAME = "xercesImpl.jar"; |
| |
| /** The Xerces-J 2.x xmlParserAPIs jar. */ |
| private static final String PARSERAPIS_JARNAME = "xmlParserAPIs.jar"; |
| |
| /** The Xerces-J 1.x version class. */ |
| private static final String XERCES1_VERSION_CLASS = |
| "org.apache.xerces.framework.Version"; |
| |
| /** The Xerces-J 1.x version field. */ |
| private static final String XERCES1_VERSION_FIELD = "fVersion"; |
| |
| /** The Xerces-J 2.x version class. */ |
| private static final String XERCES2_VERSION_CLASS = |
| "org.apache.xerces.impl.Version"; |
| |
| /** The Xerces-J 2.x version field. */ |
| private static final String XERCES2_VERSION_FIELD = "fVersion"; |
| |
| /** |
| * Gets version information for Xerces-J 1.x and 2.x, |
| * and looks for xerces.jar and xmlParserAPIs.jar. |
| * |
| * @param hash to put information in |
| * @param options to apply like strict or verbose |
| * @return status information from WhichConstant |
| */ |
| public int getInfo(Hashtable hash, String options) |
| { |
| |
| if (null == hash) |
| hash = new Hashtable(); |
| |
| int xerces1found = WhichConstant.ITEM_UNKNOWN; |
| int xerces2found = WhichConstant.ITEM_UNKNOWN; |
| |
| // Look for Xerces-J 1.x |
| try |
| { |
| Class clazz = WhichClass.findClass(XERCES1_VERSION_CLASS, |
| options); |
| |
| // Found Xerces-J 1.x, grab it's version field |
| Field f = clazz.getField(XERCES1_VERSION_FIELD); |
| String buf = (String) f.get(null); |
| |
| hash.put(SERVICE_NAME + "1" + WhichConstant.TAG_VERSION, buf); |
| |
| xerces1found = WhichConstant.ITEM_OK; |
| } |
| catch (Exception e1) |
| { |
| hash.put(SERVICE_NAME + "1" + WhichConstant.TAG_VERSION, |
| WhichConstant.ITEM_DESC[WhichConstant.ITEM_NOTFOUND]); |
| |
| xerces1found = WhichConstant.ITEM_NOTFOUND; |
| } |
| |
| // Look for Xerces-J 2.x |
| try |
| { |
| Class clazz = WhichClass.findClass(XERCES2_VERSION_CLASS, |
| options); |
| |
| // Found Xerces-J 1.x, grab it's version field |
| Field f = clazz.getField(XERCES2_VERSION_FIELD); |
| String buf = (String) f.get(null); |
| |
| hash.put(SERVICE_NAME + "2" + WhichConstant.TAG_VERSION, buf); |
| |
| xerces2found = WhichConstant.ITEM_OK; |
| } |
| catch (Exception e1) |
| { |
| hash.put(SERVICE_NAME + "2" + WhichConstant.TAG_VERSION, |
| WhichConstant.ITEM_DESC[WhichConstant.ITEM_NOTFOUND]); |
| |
| xerces2found = WhichConstant.ITEM_NOTFOUND; |
| } |
| |
| // Try to find EITHER xerces.jar OR xercesImpl.jar in |
| // the classpath - take the min() of these, since |
| // if we find either one it should be OK |
| int jarRetVal = WhichJar.searchClasspaths(hash, XERCES_JARNAME, |
| options); |
| jarRetVal = Math.min(jarRetVal, WhichJar.searchClasspaths( |
| hash, XERCESIMPL_JARNAME, options)); |
| |
| int ignoreThisReturnValue = WhichJar.searchClasspaths(hash, |
| PARSERAPIS_JARNAME, options); |
| |
| // Report OK if either version of xerces was found |
| int anyXercesFound = Math.min(xerces1found, xerces2found); |
| |
| return Math.max(jarRetVal, anyXercesFound); |
| } |
| } |
