| /******************************************************************************* |
| * Copyright (c) 2009 IBM Corporation and others |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.e4.internal.languages.javascript; |
| |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.StringTokenizer; |
| import java.util.Map.Entry; |
| |
| import org.eclipse.e4.languages.javascript.JSConstants; |
| import org.osgi.framework.Constants; |
| |
| public class JSRequireBundle { |
| private String name; |
| private Map attributes = new HashMap(); |
| private Map directives = new HashMap(); |
| private boolean optional = false; |
| private JSVersionRange bundleVersionRange = JSVersionRange.emptyRange; |
| private JSBundleImpl wiredBundle; |
| |
| public JSRequireBundle(String header) { |
| if (header == null) |
| throw new IllegalArgumentException("header cannot be null"); //$NON-NLS-1$ |
| parseRequire(header); |
| } |
| |
| private void parseRequire(String header) { |
| StringTokenizer tokenizer = new StringTokenizer(header, JSConstants.PARAMETER_DELIMITER); |
| this.name = tokenizer.nextToken().trim(); |
| while (tokenizer.hasMoreTokens()) { |
| String token = (String) tokenizer.nextElement(); |
| if (token.indexOf(JSConstants.DIRECTIVE_EQUALS) != -1) |
| parseDirective(token); |
| else if (token.indexOf(JSConstants.ATTRIBUTE_EQUALS) != -1) |
| parseAttribute(token); |
| } |
| } |
| |
| private void parseAttribute(String token) { |
| int index = token.indexOf(JSConstants.ATTRIBUTE_EQUALS); |
| String attributeName = token.substring(0, index).trim(); |
| if (attributeName.length() == 0) |
| return; |
| |
| Object value = token.substring(index + JSConstants.ATTRIBUTE_EQUALS.length()).trim(); |
| |
| if (attributeName.equals(Constants.BUNDLE_VERSION_ATTRIBUTE)) |
| bundleVersionRange = new JSVersionRange((String) value); |
| |
| attributes.put(attributeName, value); |
| } |
| |
| private void parseDirective(String token) { |
| int index = token.indexOf(JSConstants.DIRECTIVE_EQUALS); |
| String directiveName = token.substring(0, index).trim(); |
| if (directiveName.length() == 0) |
| return; |
| |
| String value = token.substring(index + JSConstants.DIRECTIVE_EQUALS.length()).trim(); |
| if (directiveName.equals(Constants.RESOLUTION_DIRECTIVE)) |
| optional = Constants.RESOLUTION_OPTIONAL.equals(value); |
| directives.put(directiveName, value); |
| } |
| |
| public boolean isOptional() { |
| return optional; |
| } |
| |
| public String getName() { |
| return name; |
| } |
| |
| public JSVersionRange getBundleVersionRange() { |
| return bundleVersionRange; |
| } |
| |
| public Map getAttributes() { |
| return attributes; |
| } |
| |
| public Map getDirectives() { |
| return directives; |
| } |
| |
| public boolean wire(JSBundleImpl candidate) { |
| if (!name.equals(candidate.getSymbolicName())) |
| return false; |
| |
| for (Iterator iterator = attributes.entrySet().iterator(); iterator.hasNext();) { |
| Entry entry = (Entry) iterator.next(); |
| String key = (String) entry.getKey(); |
| if (key.equals(Constants.BUNDLE_VERSION_ATTRIBUTE)) { |
| if (!bundleVersionRange.isIncluded(candidate.getVersion())) |
| return false; |
| } |
| } |
| wiredBundle = candidate; |
| return true; |
| } |
| |
| public JSBundleImpl getWiredBundle() { |
| return wiredBundle; |
| } |
| |
| public void unwire() { |
| wiredBundle = null; |
| } |
| } |