Java tutorial
/*! * This program is free software; you can redistribute it and/or modify it under the * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software * Foundation. * * You should have received a copy of the GNU Lesser General Public License along with this * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html * or from the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * * This program 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 Lesser General Public License for more details. * * Copyright (c) 2002-2017 Hitachi Vantara.. All rights reserved. */ /* * To change this template, choose Tools | Templates * and open the template in the editor. */ package org.pentaho.reporting.engine.classic.extensions.charting.runtime; import org.apache.batik.anim.dom.SAXSVGDocumentFactory; import org.apache.batik.anim.dom.SVGDOMImplementation; import org.apache.batik.anim.dom.SVGOMDocument; import org.apache.batik.bridge.BridgeContext; import org.apache.batik.bridge.DocumentLoader; import org.apache.batik.bridge.UserAgent; import org.apache.batik.bridge.UserAgentAdapter; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.mozilla.javascript.Context; import org.mozilla.javascript.Function; import org.mozilla.javascript.ImporterTopLevel; import org.mozilla.javascript.NativeJavaObject; import org.mozilla.javascript.Scriptable; import org.mozilla.javascript.ScriptableObject; import org.w3c.dom.Node; import javax.xml.transform.OutputKeys; import javax.xml.transform.Result; import javax.xml.transform.Source; import javax.xml.transform.Transformer; import javax.xml.transform.TransformerConfigurationException; import javax.xml.transform.TransformerException; import javax.xml.transform.TransformerFactory; import javax.xml.transform.dom.DOMSource; import javax.xml.transform.stream.StreamResult; import java.io.FileReader; import java.io.StringWriter; /** * @author pdpi */ class BaseScope extends ImporterTopLevel { private static final Log logger = LogFactory.getLog(BaseScope.class); private boolean sealedStdLib = false; private boolean initialized; private String basePath; private String systemPath; public BaseScope() { super(); } public void init(final Context cx) { // Define some global functions particular to the shell. Note // that these functions are not part of ECMA. initStandardObjects(cx, sealedStdLib); final String[] names = { "print", "load", "lib", "_loadSvg", "_xmlToString" }; defineFunctionProperties(names, BaseScope.class, ScriptableObject.DONTENUM); initialized = true; } public static Object print(final Context cx, final Scriptable thisObj, final Object[] args, final Function funObj) { for (final Object arg : args) { final String s = Context.toString(arg); logger.info(s); } return Context.getUndefinedValue(); } public static Object load(final Context cx, final Scriptable thisObj, final Object[] args, final Function funObj) { final String file = args[0].toString(); try { final BaseScope scope = (BaseScope) thisObj; cx.evaluateReader(scope, new FileReader(scope.basePath + "/" + file), file, 1, null); } catch (Exception e) { logger.error(e); return Context.toBoolean(false); } return Context.toBoolean(true); } public static Object _loadSvg(final Context cx, final Scriptable thisObj, final Object[] args, final Function funObj) { final String file = args[0].toString(); try { final BaseScope scope = (BaseScope) thisObj; final String parser = "org.apache.xerces.parsers.SAXParser"; //XMLResourceDescriptor.getXMLParserClassName(); final SAXSVGDocumentFactory f = new SAXSVGDocumentFactory(parser); final String uri = "file:" + scope.basePath + "/" + file; final SVGOMDocument doc = (SVGOMDocument) f.createDocument(uri); // Initialize the CSS Engine for the document final SVGDOMImplementation impl = (SVGDOMImplementation) SVGDOMImplementation.getDOMImplementation(); final UserAgent userAgent = new UserAgentAdapter(); final BridgeContext ctx = new BridgeContext(userAgent, new DocumentLoader(userAgent)); doc.setCSSEngine(impl.createCSSEngine(doc, ctx)); return Context.javaToJS(doc, scope); } catch (Exception e) { e.printStackTrace(); logger.error(e); return Context.getUndefinedValue(); } } public static Object lib(final Context cx, final Scriptable thisObj, final Object[] args, final Function funObj) { final String file = args[0].toString(); try { final BaseScope scope = (BaseScope) thisObj; cx.evaluateReader(scope, new FileReader(scope.systemPath + "/" + file), file, 1, null); } catch (Exception e) { logger.error(e); return Context.toBoolean(false); } return Context.toBoolean(true); } public String getBasePath() { return basePath; } public void setBasePath(final String basePath) { this.basePath = basePath; } public void setSystemPath(final String systemPath) { this.systemPath = systemPath; } public static Object _xmlToString(final Context cx, final Scriptable thisObj, final Object[] args, final Function funObj) { final Node node = (Node) ((NativeJavaObject) args[0]).unwrap(); try { final Source source = new DOMSource(node); final StringWriter stringWriter = new StringWriter(); final Result result = new StreamResult(stringWriter); final TransformerFactory factory = TransformerFactory.newInstance(); final Transformer transformer = factory.newTransformer(); transformer.setOutputProperty(OutputKeys.INDENT, "yes"); transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2"); transformer.transform(source, result); final BaseScope scope = (BaseScope) thisObj; return Context.javaToJS(stringWriter.getBuffer().toString(), scope); } catch (TransformerConfigurationException e) { e.printStackTrace(); } catch (TransformerException e) { e.printStackTrace(); } return null; } }