| /******************************************************************************* |
| * Copyright (c) 2011, 2013 RĂ¼diger Herrmann 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: |
| * RĂ¼diger Herrmann - initial API and implementation |
| * EclipseSource - ongoing development |
| ******************************************************************************/ |
| package org.eclipse.rap.tools.launch.rwt.internal.util; |
| |
| import java.util.*; |
| |
| public class TemplateParser { |
| private final String template; |
| private final Map<String,String> variables; |
| |
| public TemplateParser( String template ) { |
| checkNotNull( template, "template" ); //$NON-NLS-1$ |
| this.template = template; |
| this.variables = new HashMap<String,String>(); |
| } |
| |
| public void registerVariable( String variableName, String variableValue ) { |
| checkNotNull( variableName, "variableName" ); //$NON-NLS-1$ |
| checkNotNull( variableValue, "variableValue" ); //$NON-NLS-1$ |
| variables.put( variableName, variableValue ); |
| } |
| |
| public String parse() { |
| StringBuffer result = new StringBuffer( template ); |
| Iterator iter = variables.keySet().iterator(); |
| while( iter.hasNext() ) { |
| String variableName = ( String )iter.next(); |
| String variableValue = getVariableValue( variableName ); |
| String variableToken = variableToken( variableName ); |
| replaceAll( result, variableToken, variableValue ); |
| } |
| return result.toString(); |
| } |
| |
| private static void replaceAll( StringBuffer buffer, String occurence, String replacement ) { |
| int index = buffer.indexOf( occurence, 0 ); |
| while( index != -1 ) { |
| buffer.replace( index, index + occurence.length(), replacement ); |
| index = buffer.indexOf( occurence, index + replacement.length() ); |
| } |
| } |
| |
| private String getVariableValue( String variableName ) { |
| String result = ""; //$NON-NLS-1$ |
| if( variables.containsKey( variableName ) ) { |
| result = variables.get( variableName ); |
| } |
| return result; |
| } |
| |
| private static String variableToken( String variableName ) { |
| return "${" + variableName + "}"; //$NON-NLS-1$ //$NON-NLS-2$ |
| } |
| |
| private static void checkNotNull( String argument, String argumentName ) { |
| if( argument == null ) { |
| throw new NullPointerException( argumentName ); |
| } |
| } |
| |
| } |