+++ /dev/null
-/*
- * Copyright (C) 2001, 2002 The Mir-coders group
- *
- * This file is part of Mir.
- *
- * Mir is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * Mir is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Mir; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * In addition, as a special exception, The Mir-coders gives permission to link
- * the code of this program with the com.oreilly.servlet library, any library
- * licensed under the Apache Software License, The Sun (tm) Java Advanced
- * Imaging library (JAI), The Sun JIMI library (or with modified versions of
- * the above that use the same license as the above), and distribute linked
- * combinations including the two. You must obey the GNU General Public
- * License in all respects for all of the code used other than the above
- * mentioned libraries. If you modify this file, you may extend this exception
- * to your version of the file, but you are not obligated to do so. If you do
- * not wish to do so, delete this exception statement from your version.
- */
-
-package mir.xml;
-
-import java.io.*;
-import java.util.*;
-import java.lang.reflect.*;
-import org.xml.sax.helpers.DefaultHandler;
-import org.xml.sax.*;
-import javax.xml.parsers.ParserConfigurationException;
-import javax.xml.parsers.SAXParser;
-import javax.xml.parsers.SAXParserFactory;
-
-
-import mir.misc.ConfigException;
-import mir.misc.Location;
-
-/**
- * Configures a based on
- * a XML config file.
- *
- * Based and inspired by ant's XmlConfigurator.java
- * It's a simplified version of the ant parser with
- * the addition of calling set* methods for defined
- * classes as well as the inclusion of a method to
- * add parameters (nested tags) that are required.
- * (the addRequired method) in the config file.
- * that part is from tomcat.
- *
- * much code is stolen from ant ProjectHelper.java.
- *
- * @author -mh <heckmann@hbe.ca>
- * @version 2001.10.21
- */
-
-public class XmlConfigurator {
-
- private static SAXParserFactory parserFactory = null;
-
- private SAXParser saxParser;
- //private Project project;
- private File configFile;
- private File configFileParent;
- private Locator locator;
-
- private SaxContext saxContext;
-
- XmlMatch requiredXmlMatch[]=new XmlMatch[256]; //maximum amount of rules
- int requiredXmlMatchCount=0;
- boolean matched[] = new boolean[256];
- int matchedCount=0;
-
- XmlMatch mustComeFirstMatch[]=new XmlMatch[256]; //maximum amount of rules
- int comeFirstMatchCount=0;
-
- Property comesFirstArr[]=new Property[128];
- int comesFirstCount=0;
-
- Property propertyArr[]=new Property[128];
- int propertyCount=0;
-
- private static XmlConfigurator instance = new XmlConfigurator();
- public static XmlConfigurator getInstance() { return instance; }
-
- /**
- * Configures the Project with the contents of the specified XML file.
- */
- public void configure(File configFile) throws ConfigException {
- setConfigFile(configFile);
- parse();
- }
-
- /**
- * konstruktor. private so no one calls "new" on us.
- */
- private XmlConfigurator() {}
-
-
- /**
- * Constructs a new Ant parser for the specified XML file.
- */
- private void setConfigFile(File configFile) {
- this.configFile = new File(configFile.getAbsolutePath());
- configFileParent = new File(this.configFile.getParent());
- saxContext = new SaxContext();
- }
-
- /**
- * Parses the config file.
- */
- private void parse() throws ConfigException {
- FileInputStream inputStream = null;
- InputSource inputSource = null;
-
- try {
- SAXParserFactory factory = SAXParserFactory.newInstance();
- saxParser = factory.newSAXParser();
-
- String uri = "file:" + configFile.getAbsolutePath().replace('\\', '/');
- for (int index = uri.indexOf('#'); index != -1; index = uri.indexOf('#')) {
- uri = uri.substring(0, index) + "%23" + uri.substring(index+1);
- }
-
- inputStream = new FileInputStream(configFile);
- inputSource = new InputSource(inputStream);
- inputSource.setSystemId(uri);
- saxParser.parse(inputSource, new RootHandler());
- if(matchedCount < requiredXmlMatchCount) {
- for( int i=0; i<requiredXmlMatchCount; i++) {
- if( !matched[i] )
- throw new ConfigException("Error parsing config file, missing required element: "+requiredXmlMatch[i].toString());
- }
- }
- try {
- for(int i=0; i<comesFirstCount;i++) {
- comesFirstArr[i].set();
- }
- for(int i=0; i<propertyCount;i++) {
- propertyArr[i].set();
- System.out.println("about to set: "+i);
- }
- } catch (Exception e) {
- throw new SAXParseException(e.toString(), locator);
- }
-}
- catch(ParserConfigurationException exc) {
- throw new ConfigException("Parser has not been configured correctly", exc);
- }
- catch(SAXParseException exc) {
- Location location =
- new Location(configFile.toString(), exc.getLineNumber(), exc.getColumnNumber());
-
- Throwable t = exc.getException();
- if (t instanceof ConfigException) {
- ConfigException be = (ConfigException) t;
- if (be.getLocation() == Location.UNKNOWN_LOCATION) {
- be.setLocation(location);
- }
- throw be;
- }
-
- throw new ConfigException(exc.getMessage(), t, location);
- }
- catch(SAXException exc) {
- Throwable t = exc.getException();
- if (t instanceof ConfigException) {
- throw (ConfigException) t;
- }
- throw new ConfigException(exc.getMessage(), t);
- }
- catch(FileNotFoundException exc) {
- throw new ConfigException(exc);
- }
- catch(IOException exc) {
- throw new ConfigException("Error reading config file", exc);
- }
- finally {
- if (inputStream != null) {
- try {
- inputStream.close();
- }
- catch (IOException ioe) {
- // ignore this
- }
- }
- }
- }
-
- /**
- * The common superclass for all sax event handlers in Ant. Basically
- * throws an exception in each method, so subclasses should override
- * what they can handle.
- *
- * Each type of xml element (task, target, etc) in ant will
- * have its own subclass of AbstractHandler.
- *
- * In the constructor, this class takes over the handling of sax
- * events from the parent handler, and returns
- * control back to the parent in the endElement method.
- */
- private class AbstractHandler extends DefaultHandler {
- protected ContentHandler parentHandler;
-
- public AbstractHandler(ContentHandler parentHandler) {
- this.parentHandler = parentHandler;
-
- // Start handling SAX events
- try {
- saxParser.getXMLReader().setContentHandler(this);
- } catch (SAXException e) {
- throw new ConfigException("Error getting XMLReader",e);
- }
-
- }
-
- public void startElement(String uri, String tag, String qName, Attributes attrs) throws SAXParseException {
- throw new SAXParseException("Unexpected element \"" + tag + "\"", locator);
- }
-
- public void characters(char[] buf, int start, int end) throws SAXParseException {
- String s = new String(buf, start, end).trim();
-
- if (s.length() > 0) {
- throw new SAXParseException("Unexpected text \"" + s + "\"", locator);
- }
- }
-
- /**
- * Called when this element and all elements nested into it have been
- * handeled.
- */
- protected void finished() {}
-
- public void endElement(String uri, String tag, String qName) throws SAXException {
- finished();
- // Let parent resume handling SAX events
- saxParser.getXMLReader().setContentHandler(parentHandler);
- }
- }
-
- /**
- * Handler for the root element. It's only child must be the "mir" element.
- */
- private class RootHandler extends DefaultHandler {
-
- /**
- * resolve file: URIs as relative to the build file.
- */
- public InputSource resolveEntity(String publicId,
- String systemId) {
-
-
- if (systemId.startsWith("file:")) {
- String path = systemId.substring(5);
- int index = path.indexOf("file:");
-
- // we only have to handle these for backward compatibility
- // since they are in the FAQ.
- while (index != -1) {
- path = path.substring(0, index) + path.substring(index + 5);
- index = path.indexOf("file:");
- }
-
- String entitySystemId = path;
- index = path.indexOf("%23");
- // convert these to #
- while (index != -1) {
- path = path.substring(0, index) + "#" + path.substring(index + 3);
- index = path.indexOf("%23");
- }
-
- File file = new File(path);
- if (!file.isAbsolute()) {
- file = new File(configFileParent, path);
- }
-
- try {
- InputSource inputSource = new InputSource(new FileInputStream(file));
- inputSource.setSystemId("file:" + entitySystemId);
- return inputSource;
- } catch (FileNotFoundException fne) {
- System.out.println(file.getAbsolutePath()+" could not be found");
- }
- }
- // use default if not file or file not found
- return null;
- }
-
- public void startElement(String uri, String tag, String qName, Attributes attrs) throws SAXParseException {
- if (tag.equals("mir")) {
- new MirHandler(this).init(tag, attrs);
- } else {
- throw new SAXParseException("Config file is not of expected XML type", locator);
- }
- }
-
- public void setDocumentLocator(Locator locator) {
- XmlConfigurator.this.locator = locator;
- }
- }
-
- /**
- * Handler for the top level "project" element.
- */
- private class MirHandler extends AbstractHandler {
- public MirHandler(ContentHandler parentHandler) {
- super(parentHandler);
- }
-
- public void init(String tag, Attributes attrs) throws SAXParseException {
- String name = null;
-
- for (int i = 0; i < attrs.getLength(); i++) {
- String key = attrs.getLocalName(i);
- String value = attrs.getValue(i);
-
- if (key.equals("name")) {
- name = value;
- } else {
- throw new SAXParseException("Unexpected attribute \"" + attrs.getLocalName(i) + "\"", locator);
- }
- }
-
- if (name == null) {
- throw new SAXParseException("The default attribute of \"name\" is required",
- locator);
- }
-
- saxContext.push(tag);
- matchedCount += checkRequiredTag(saxContext);
-
- //MirConfig.setName(name);
-
- }
-
- public void startElement(String uri, String name, String qName, Attributes attrs) throws SAXParseException {
- if (name.equals("class")) {
- handleClassdef(name, attrs);
- } else {
- throw new SAXParseException("Unexpected element \"" + name + "\"", locator);
- }
- }
-
- public void finished() {
- System.out.println("COUNT "+saxContext.getTagCount()+" TAG "+saxContext.getTag(saxContext.getTagCount()-1));
- saxContext.pop();
- }
-
- private void handleClassdef(String name, Attributes attrs) throws SAXParseException {
- (new ClassHandler(this)).init(name, attrs);
- }
-
- }
-
- /**
- * Handler for "class" elements.
- */
- private class ClassHandler extends AbstractHandler {
-
- Class classN;
-
- public ClassHandler(ContentHandler parentHandler) {
- super(parentHandler);
- }
-
- public void init(String tag, Attributes attrs) throws SAXParseException {
- String name = null;
-
- for (int i = 0; i < attrs.getLength(); i++) {
- String key = attrs.getLocalName(i);
- String value = attrs.getValue(i);
-
- if (key.equals("name")) {
- name = value;
- } else {
- throw new SAXParseException("Unexpected attribute \"" + key + "\"", locator);
- }
- }
-
- if (name == null) {
- throw new SAXParseException("class element appears without a \"name\" attribute", locator);
- }
-
- saxContext.push(tag+":"+name);
- matchedCount += checkRequiredTag(saxContext);
- try {
- classN=Class.forName(name, false, this.getClass().getClassLoader());
- } catch (ClassNotFoundException e) {
- throw new ConfigException("Error invoking class: \""+name+
- "\"",e);
- }
-
- }
-
- public void startElement(String uri, String name, String qName, Attributes attrs) throws SAXParseException {
- if (name.equals("property")) {
- handleProperties(name, attrs);
- } else {
- throw new SAXParseException("Unexpected element \"" + name + "\"", locator);
- }
- }
-
- public void finished() {
- System.out.println("COUNT "+saxContext.getTagCount()+" TAG "+saxContext.getTag(saxContext.getTagCount()-1));
- System.out.println("COUNT "+saxContext.getTagCount());
- saxContext.pop();
- }
-
- private void handleProperties(String name, Attributes attrs) throws SAXParseException {
- (new PropertiesHandler(this, classN )).init(name, attrs);
- }
-
- }
-
- /**
- * Handler for all property elements.
- */
- private class PropertiesHandler extends AbstractHandler {
- private Class classN;
-
- public PropertiesHandler(ContentHandler parentHandler, Class classN) {
- super(parentHandler);
-
- this.classN = classN;
- }
-
- public void init(String tag, Attributes attrs) throws SAXParseException {
- String name=null;
- String value=null;
-
- for (int i = 0; i < attrs.getLength(); i++) {
- String key = attrs.getLocalName(i);
- String v = attrs.getValue(i);
-
- if (key.equals("name")) {
- name = v;
- } else if (key.equals("value")) {
- value = v;
- } else {
- throw new SAXParseException("Unexpected attribute \"" + key + "\"", locator);
- }
- }
-
- if (name == null) {
- throw new SAXParseException("property element appears without a \"name\" attribute", locator);
- }
- if (value == null) {
- throw new SAXParseException("property element appears without a \"value\" attribute", locator);
- }
- saxContext.push(tag+":"+name);
- matchedCount += checkRequiredTag(saxContext);
-
- //finally add it to the lists
- //to be processed later
- if (checkComesFirstTag(saxContext)) {
- comesFirstArr[comesFirstCount]=new Property(classN, name, value);
- comesFirstCount++;
- } else {
- propertyArr[propertyCount]=new Property(classN, name, value);
- propertyCount++;
- }
- }
-
- protected void finished() {
- System.out.println("COUNT "+saxContext.getTagCount()+" TAG "+saxContext.getTag(saxContext.getTagCount()-1));
- System.out.println("COUNT "+saxContext.getTagCount());
- saxContext.pop();
- }
-
- }
-
- public void addComesFirstTag(String xmlPath) {
- mustComeFirstMatch[comeFirstMatchCount]=new XmlMatch(xmlPath);
- comeFirstMatchCount++;
- }
-
- private boolean checkComesFirstTag(SaxContext ctx) {
- for( int i=0; i<comeFirstMatchCount; i++ ) {
- if( mustComeFirstMatch[i].match(ctx) ) {
- return true;
- }
- }
- return false;
- }
-
- public void addRequiredTag(String xmlPath) {
- requiredXmlMatch[requiredXmlMatchCount]=new XmlMatch(xmlPath);
- matched[requiredXmlMatchCount]=false;
- requiredXmlMatchCount++;
- }
-
- private int checkRequiredTag(SaxContext ctx) {
- int matchCount=0;
- for( int i=0; i<requiredXmlMatchCount; i++ ) {
- if( requiredXmlMatch[i].match(ctx) ) {
- matched[i]=true;
- matchCount++;
- }
- }
- return matchCount;
- }
-
-
- private static String capitalize(String name) {
- if (name == null || name.length() == 0) {
- return name;
- }
- char chars[] = name.toCharArray();
- chars[0] = Character.toUpperCase(chars[0]);
- return new String(chars);
- }
-
- private class Property {
- Class classN;
- String name;
- String value;
-
- public Property( Class classN, String name, String value) {
- this.classN=classN;
- this.name=name;
- this.value=value;
- }
-
- /** Find a method with the right name
- * If found, call the method ( if param is int or boolean we'll convert
- * value to the right type before) - that means you can have setDebug(1).
- */
- public void set() throws Exception {
-
- String setter= "set" +capitalize(name);
-
- try {
- Method methods[]=classN.getMethods();
- Method setPropertyMethod=null;
-
- // First, the ideal case - a setFoo( String ) method
- for( int i=0; i< methods.length; i++ ) {
- Class paramT[]=methods[i].getParameterTypes();
- if( setter.equals( methods[i].getName() ) &&
- paramT.length == 1 &&
- "java.lang.String".equals( paramT[0].getName())) {
-
- methods[i].invoke( null, new Object[] { value } );
- return;
- }
- } //end for
-
- // Try a setFoo ( int ), (float) or ( boolean )
- for( int i=0; i< methods.length; i++ ) {
- boolean ok=true;
- if( setter.equals( methods[i].getName() ) &&
- methods[i].getParameterTypes().length == 1) {
-
- // match - find the type and invoke it
- Class paramType=methods[i].getParameterTypes()[0];
- Object params[]=new Object[1];
- if ("java.lang.Integer".equals( paramType.getName()) ||
- "int".equals( paramType.getName())) {
- try {
- params[0]=new Integer(value);
- } catch( NumberFormatException ex ) {ok=false;}
- } else if ("java.lang.Float".equals( paramType.getName()) ||
- "float".equals( paramType.getName())) {
- try {
- params[0]=new Float(value);
- } catch( NumberFormatException ex ) {ok=false;}
- } else if ("java.lang.Boolean".equals( paramType.getName()) ||
- "boolean".equals( paramType.getName())) {
- params[0]=new Boolean(value);
- } else {
- throw new Exception("Unknown type " + paramType.getName() + "for property \""+name+"\"with value \""+value+"\"");
- }
-
- if( ok ) {
- System.out.println("XXX: " + methods[i] + " " + classN + " " + params[0] );
- methods[i].invoke( null, params );
- return;
- } //end if
- } //end if setter
- } //end for
-
- //if we got this far it means we were not successful in setting the
- //property
- throw new Exception("Count not find method \""+setter+"\" in Class \""+classN.getName()+"\" in order to set property \""+name+"\"");
-
- } catch( SecurityException ex1 ) {
- throw new Exception("SecurityException for " + classN.getName() + " " + name + "=" + value +")" );
- //if( ctx.getDebug() > 1 ) ex1.printStackTrace();
- } catch (IllegalAccessException iae) {
- throw new Exception("IllegalAccessException for " + classN.getName() + " " + name + "=" + value +")" );
- //if( ctx.getDebug() > 1 ) iae.printStackTrace();
- } catch (InvocationTargetException ie) {
- throw new Exception("InvocationTargetException for " + classN.getName() + " " + name + "=" + value +")" );
- //if( ctx.getDebug() > 1 ) ie.printStackTrace();
- }
- }
- }
-
-}
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