| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.forrest.conf; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.Properties; |
| import java.util.StringTokenizer; |
| |
| import org.apache.commons.lang.StringUtils; |
| |
| /** |
| * Class for accessing properties in a properties file roughly compatible with |
| * Ant property files, where ${name} is replaced with the value of the property |
| * if declared beforehand. |
| */ |
| public class AntProperties extends Properties |
| { |
| |
| public AntProperties() { |
| super(); |
| } |
| |
| public AntProperties(Properties arg0) { |
| super(arg0); |
| putAllProperties(arg0); |
| } |
| |
| public synchronized void load(InputStream arg0) throws IOException { |
| super.load(arg0); |
| |
| BufferedReader in = null; |
| try { |
| |
| in = new BufferedReader(new InputStreamReader(arg0)); |
| |
| String currentLine, name, value; |
| int splitIndex; |
| |
| while ((currentLine = in.readLine()) != null) { |
| // # == comment |
| if (!currentLine.startsWith("#") |
| && !(currentLine.trim().length() == 0)) { |
| splitIndex = currentLine.indexOf('='); |
| name = currentLine.substring(0, splitIndex).trim(); |
| value = currentLine.substring(splitIndex + 1).trim(); |
| this.put(name, value); |
| } |
| } |
| } finally { |
| if (in != null) { |
| try { |
| in.close(); |
| } catch (IOException e) {} |
| } |
| } |
| } |
| |
| public synchronized Object put(Object name, Object value) { |
| //if the property is already there don't overwrite, as in Ant |
| //properties defined first take precedence |
| if (!super.containsKey(name)) { |
| String[] names = StringUtils.substringsBetween(value.toString(), "${", "}"); |
| if ( names != null ){ |
| for ( int i = 0; i < names.length; i++ ) { |
| String currentName = names[i]; |
| String valueToSearchFor = "${" + currentName + "}"; |
| String valueToReplaceWith = (String) super.get(currentName); |
| value = StringUtils.replace(value.toString(), valueToSearchFor, |
| valueToReplaceWith); |
| } |
| } |
| return super.put(name, value); |
| } |
| |
| return null; |
| } |
| |
| public synchronized void putAllProperties(Map arg0) { |
| Iterator i = arg0.entrySet().iterator(); |
| while (i.hasNext()) { |
| Map.Entry me = (Map.Entry)i.next(); |
| this.put(me.getKey(), me.getValue()); |
| } |
| } |
| |
| public synchronized Object setProperty(String name, String value) { |
| return this.put(name, value); |
| } |
| |
| public String filter(String stringToFilter) { |
| |
| StringBuffer resultStringBuffer = new StringBuffer(); |
| |
| StringTokenizer st = new StringTokenizer(stringToFilter, "@", true); |
| |
| STATE state; |
| |
| if (stringToFilter.startsWith("@")) { |
| state = new STATE(STATE.START_TOKEN); |
| } else { |
| state = new STATE(STATE.STRING_NOT_TO_FILTER); |
| } |
| |
| for (String currentToken; st.hasMoreTokens(); state.increment()) { |
| |
| currentToken = st.nextToken(); |
| |
| if (state.isStringToFilter()) { |
| resultStringBuffer.append(getProperty(currentToken, "@" |
| + currentToken + "@")); |
| } else if (state.isStringNOTToFilter()) { |
| resultStringBuffer.append(currentToken); |
| } |
| } |
| |
| return resultStringBuffer.toString(); |
| } |
| |
| private static class STATE |
| { |
| |
| final static int STRING_NOT_TO_FILTER = 0; |
| final static int START_TOKEN = 1; |
| final static int STRING_TO_FILTER = 2; |
| final static int END_TOKEN = 3; |
| |
| private int currentState; |
| |
| STATE(int startState) { |
| this.currentState = startState; |
| } |
| |
| void increment() { |
| currentState++; |
| if (currentState > 3) { |
| currentState = 0; |
| } |
| |
| } |
| |
| boolean isStringToFilter() { |
| return (currentState == STRING_TO_FILTER); |
| } |
| |
| boolean isStringNOTToFilter() { |
| return (currentState == STRING_NOT_TO_FILTER); |
| } |
| } |
| |
| } |