| /*************************************************************************************************** |
| * Copyright (c) 2005 Eteration A.S. and Gorkem Ercan. 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: Gorkem Ercan - initial API and implementation |
| * |
| **************************************************************************************************/ |
| |
| package org.eclipse.jst.server.generic.internal.xml; |
| |
| import java.io.File; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.core.variables.IDynamicVariable; |
| import org.eclipse.core.variables.VariablesPlugin; |
| import org.eclipse.jst.server.generic.core.internal.CorePlugin; |
| import org.eclipse.jst.server.generic.servertype.definition.Property; |
| import org.eclipse.jst.server.generic.servertype.definition.ServerRuntime; |
| |
| /** |
| * Utility to resolve serverdef/runtimedef properties with the user provided data. |
| * Resolver also looks through eclipse platform provided dynamic variables to |
| * resolve a property. |
| * |
| * @author Gorkem Ercan |
| */ |
| public class Resolver { |
| |
| private static final String PROP_START2 = "%{"; //$NON-NLS-1$ |
| private static final String PROP_END = "}"; //$NON-NLS-1$ |
| private static final String PROP_START = "${"; //$NON-NLS-1$ |
| private Map fPropertyValues = new HashMap(); |
| private ServerRuntime server; |
| |
| /** |
| * @param runtime |
| */ |
| public Resolver(ServerRuntime runtime) { |
| this.server = runtime; |
| } |
| |
| /** |
| * Returns a resolved string. |
| * |
| * @param proppedString |
| * @return resolved string |
| */ |
| public String resolveProperties(String proppedString) { |
| HashMap cache = new HashMap(getProperties().size()); |
| Iterator itr = getProperties().iterator(); |
| while (itr.hasNext()) { |
| Property element =(Property) itr.next(); |
| String value = element.getDefault(); |
| if(fPropertyValues != null && fPropertyValues.containsKey(element.getId())) |
| value=(String)fPropertyValues.get(element.getId()); |
| if(Property.TYPE_DIRECTORY.equals(element.getType()) || Property.TYPE_FILE.equals(element.getType())) |
| value = value.replace('\\','/'); |
| cache.put(element.getId(), value); |
| } |
| cache.put("pathChar", File.pathSeparator); //$NON-NLS-1$ |
| String str = resolvePropertiesFromCache(proppedString, cache); |
| str = fixPassthroughProperties(str); |
| return str; |
| } |
| |
| private List getProperties() { |
| return this.server.getProperty(); |
| } |
| |
| private String fixPassthroughProperties(String str) { |
| String resolvedString = str; |
| if (isPassPropertyLeft(resolvedString)) { |
| resolvedString = fixParam(resolvedString); |
| resolvedString = fixPassthroughProperties(resolvedString); |
| } |
| return resolvedString; |
| } |
| |
| private String resolvePropertiesFromCache( |
| String proppedString, |
| HashMap cache) { |
| String resolvedString = proppedString; |
| int start = skipToProperty(resolvedString, cache);// see if there are properties to be resolved. |
| if (start >= 0) { |
| resolvedString = resolveProperty(resolvedString, cache); |
| resolvedString = resolvePropertiesFromCache(resolvedString, cache); |
| } |
| return resolvedString; |
| } |
| |
| private int skipToProperty(String str,HashMap cache) { |
| int start = -1; |
| int end = 0; |
| String key=""; //$NON-NLS-1$ |
| do { |
| start = str.indexOf(PROP_START,end); |
| if( start < 0) |
| return start; |
| end = str.indexOf(PROP_END, start); |
| key = str.substring(start + 2, end); |
| } |
| while( !cache.containsKey( key ) && VariablesPlugin.getDefault().getStringVariableManager().getDynamicVariable( key ) == null ); |
| return start; |
| } |
| |
| private boolean isPassPropertyLeft(String str) { |
| return str.indexOf(PROP_START2) >= 0; |
| } |
| |
| private String resolveProperty(String proppedString, HashMap cache) { |
| StringBuffer str = new StringBuffer(proppedString); |
| int start = str.indexOf(PROP_START); |
| int end = str.indexOf(PROP_END, start); |
| String key = str.substring(start + 2, end); |
| String value = (String)cache.get(key); |
| if(value == null ){// look in eclipse variables |
| IDynamicVariable dv = VariablesPlugin.getDefault().getStringVariableManager().getDynamicVariable( key ); |
| if (dv != null ){ |
| try { |
| value = dv.getValue( null ); |
| } |
| catch( CoreException e ){ |
| CorePlugin.getDefault().getLog().log( |
| new Status(IStatus.ERROR, CorePlugin.PLUGIN_ID, 1, |
| "Can not resolve eclipse variable", e)); //$NON-NLS-1$ |
| } |
| } |
| } |
| if(value == null ) |
| return str.toString(); |
| return str.replace( start, end+1, value ).toString(); |
| } |
| |
| private String fixParam(String proppedString) { |
| String str = proppedString; |
| int start = str.indexOf(PROP_START2); |
| return str.substring(0, start) |
| + PROP_START |
| + str.substring(start+2); |
| } |
| |
| /** |
| * Set the name value pairs that the receiver resolver instance |
| * uses to resolve serverdef/runtimedef properties. |
| * |
| * @param propertyValues The fPropertyValues to set. |
| */ |
| public void setPropertyValues(Map propertyValues) { |
| fPropertyValues = propertyValues; |
| } |
| } |