+++ /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.config;
-
-import mir.config.exceptions.ConfigDefineNotKnownException;
-import mir.config.exceptions.ConfigFailure;
-
-import org.xml.sax.Attributes;
-import org.xml.sax.InputSource;
-import org.xml.sax.Locator;
-import org.xml.sax.SAXException;
-import org.xml.sax.SAXParseException;
-
-import org.xml.sax.helpers.DefaultHandler;
-
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileNotFoundException;
-import java.io.IOException;
-
-import java.util.HashMap;
-import java.util.Map;
-import java.util.Stack;
-
-import javax.xml.parsers.ParserConfigurationException;
-import javax.xml.parsers.SAXParser;
-import javax.xml.parsers.SAXParserFactory;
-
-
-public class ConfigReader {
- final static String propertyTagName = "property";
- final static String propertyNameAttribute = "name";
- final static String propertyValueAttribute = "value";
- final static String defineTagName = "define";
- final static String defineNameAttribute = "name";
- final static String defineValueAttribute = "value";
- final static String includeTagName = "include";
- final static String includeFileAttribute = "file";
-
- public ConfigReader() {
- super();
- }
-
- public void parseFile(String aFileName, ConfigNodeBuilder aRootNode)
- throws ConfigFailure {
- try {
- SAXParserFactory parserFactory = SAXParserFactory.newInstance();
-
- parserFactory.setNamespaceAware(false);
- parserFactory.setValidating(true);
-
- ConfigReaderHandler handler =
- new ConfigReaderHandler(aRootNode, parserFactory);
-
- handler.includeFile(aFileName);
- } catch (Throwable e) {
- if (e instanceof SAXParseException &&
- ((SAXParseException) e).getException() instanceof ConfigFailure) {
- throw (ConfigFailure) ((SAXParseException) e).getException();
- } else {
- e.printStackTrace();
- throw new ConfigFailure(e.getMessage());
- }
- }
- }
-
- private class ConfigReaderHandler extends DefaultHandler {
- ConfigNodeBuilder builder;
- Stack nodeStack;
- Locator locator;
- DefinesManager definesManager;
- int level;
- Stack includeFileStack;
- SAXParserFactory parserFactory;
-
- public ConfigReaderHandler(ConfigNodeBuilder aBuilder,
- SAXParserFactory aParserFactory) {
- super();
-
- builder = aBuilder;
- nodeStack = new Stack();
- includeFileStack = new Stack();
- definesManager = new DefinesManager();
- parserFactory = aParserFactory;
- level = 0;
- }
-
- public String getLocatorDescription(Locator aLocator) {
- return aLocator.getPublicId() + " (" + aLocator.getLineNumber() + ")";
- }
-
- public void setDocumentLocator(Locator aLocator) {
- locator = aLocator;
- }
-
- private void includeFile(String aFileName)
- throws ConfigFailure, SAXParseException, SAXException {
- File file;
- SAXParser parser;
- InputSource inputSource;
- System.err.println("about to include " + aFileName);
-
- try {
- if (!includeFileStack.empty()) {
- file =
- new File(new File((String) includeFileStack.peek()).getParent(),
- aFileName);
- } else {
- file = new File(aFileName);
- }
-
- System.err.println("about to include " + file.getCanonicalPath());
-
- if (includeFileStack.contains(file.getCanonicalPath())) {
- throw new ConfigFailure("recursive inclusion of file " +
- file.getCanonicalPath(), getLocatorDescription(locator));
- }
-
- parser = parserFactory.newSAXParser();
-
- inputSource = new InputSource(new FileInputStream(file));
- inputSource.setPublicId(file.getCanonicalPath());
-
- includeFileStack.push(file.getCanonicalPath());
-
- try {
- parser.parse(inputSource, this);
- } finally {
- includeFileStack.pop();
- }
- } catch (ParserConfigurationException e) {
- throw new ConfigFailure("Internal exception while including \"" +
- aFileName + "\": " + e.getMessage(), e, getLocatorDescription(locator));
- } catch (SAXParseException e) {
- throw e;
- } catch (ConfigFailure e) {
- throw e;
- } catch (FileNotFoundException e) {
- throw new ConfigFailure("Include file \"" + aFileName +
- "\" not found: " + e.getMessage(), e, getLocatorDescription(locator));
- } catch (IOException e) {
- throw new ConfigFailure("unable to open include file \"" + aFileName +
- "\": " + e.getMessage(), e, getLocatorDescription(locator));
- }
- }
-
- public void startElement(String aUri, String aTag, String aQualifiedName,
- Attributes anAttributes) throws SAXException {
- nodeStack.push(builder);
- level++;
-
- try {
- if (builder == null) {
- throw new ConfigFailure("define, include and property tags cannot have content",
- getLocatorDescription(locator));
- }
-
- if (aQualifiedName.equals(propertyTagName)) {
- String name = anAttributes.getValue(propertyNameAttribute);
- String value = anAttributes.getValue(propertyValueAttribute);
-
- if (name == null) {
- throw new ConfigFailure("property has no name attribute",
- getLocatorDescription(locator));
- } else if (value == null) {
- throw new ConfigFailure("property \"" + name +
- "\" has no value attribute", getLocatorDescription(locator));
- }
-
- builder.addProperty(name,
- definesManager.resolve(value, getLocatorDescription(locator)),
- value, getLocatorDescription(locator));
- builder = null;
- } else if (aQualifiedName.equals(defineTagName)) {
- String name = anAttributes.getValue(defineNameAttribute);
- String value = anAttributes.getValue(defineValueAttribute);
-
- if (name == null) {
- throw new ConfigFailure("define has no name attribute",
- getLocatorDescription(locator));
- } else if (value == null) {
- throw new ConfigFailure("define \"" + name +
- "\" has no value attribute", getLocatorDescription(locator));
- }
-
- definesManager.addDefine(name,
- definesManager.resolve(value, getLocatorDescription(locator)));
- builder = null;
- } else if (aQualifiedName.equals(includeTagName)) {
- String fileName = anAttributes.getValue(includeFileAttribute);
-
- if (fileName == null) {
- throw new ConfigFailure("include has no file attribute",
- getLocatorDescription(locator));
- }
-
- includeFile(definesManager.resolve(fileName,
- getLocatorDescription(locator)));
- builder = null;
- } else {
- builder =
- builder.makeSubNode(aQualifiedName, getLocatorDescription(locator));
- }
- } catch (ConfigFailure e) {
- throw new SAXParseException(e.getMessage(), locator, e);
- }
- }
-
- public void endElement(String aUri, String aTag, String aQualifiedName)
- throws SAXParseException {
- builder = (ConfigNodeBuilder) nodeStack.pop();
- level--;
- }
-
- public void characters(char[] aBuffer, int aStart, int anEnd)
- throws SAXParseException {
- String text = new String(aBuffer, aStart, anEnd).trim();
-
- if (text.length() > 0) {
- throw new SAXParseException("Text not allowed", locator,
- new ConfigFailure("text not allowed", getLocatorDescription(locator)));
- }
- }
- }
-
- private class DefinesManager {
- Map defines;
-
- public DefinesManager() {
- defines = new HashMap();
- }
-
- public void addDefine(String aName, String anExpression) {
- defines.put(aName, anExpression);
- }
-
- public String resolve(String anExpression, String aLocation)
- throws ConfigFailure {
- int previousPosition = 0;
- int position;
- int endOfNamePosition;
- String name;
-
- StringBuffer result = new StringBuffer();
-
- while ((position = anExpression.indexOf("$", previousPosition)) >= 0) {
- result.append(anExpression.substring(previousPosition, position));
-
- if (position >= (anExpression.length() - 1)) {
- result.append(anExpression.substring(position, anExpression.length()));
- previousPosition = anExpression.length();
- } else {
- if (anExpression.charAt(position + 1) == '{') {
- endOfNamePosition = anExpression.indexOf('}', position);
-
- if (endOfNamePosition >= 0) {
- name = anExpression.substring(position + 2, endOfNamePosition);
-
- if (defines.containsKey(name)) {
- result.append((String) defines.get(name));
- previousPosition = endOfNamePosition + 1;
- } else {
- throw new ConfigDefineNotKnownException("Variable \"" + name +
- "\" not defined", aLocation);
- }
- } else {
- throw new ConfigFailure("Missing }", aLocation);
- }
- } else {
- previousPosition = position + 2;
- result.append(anExpression.charAt(position + 1));
- }
- }
- }
-
- result.append(anExpression.substring(previousPosition,
- anExpression.length()));
-
- return result.toString();
- }
- }
-}
projects / mir.git / blobdiff