001/* 002 * Sonar, open source software quality management tool. 003 * Copyright (C) 2008-2012 SonarSource 004 * mailto:contact AT sonarsource DOT com 005 * 006 * Sonar is free software; you can redistribute it and/or 007 * modify it under the terms of the GNU Lesser General Public 008 * License as published by the Free Software Foundation; either 009 * version 3 of the License, or (at your option) any later version. 010 * 011 * Sonar is distributed in the hope that it will be useful, 012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014 * Lesser General Public License for more details. 015 * 016 * You should have received a copy of the GNU Lesser General Public 017 * License along with Sonar; if not, write to the Free Software 018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02 019 */ 020package org.sonar.core.config; 021 022import org.apache.commons.configuration.Configuration; 023import org.apache.commons.io.FileUtils; 024import org.apache.commons.io.IOUtils; 025import org.apache.commons.lang.text.StrSubstitutor; 026 027import java.io.File; 028import java.io.FileInputStream; 029import java.io.IOException; 030import java.io.InputStream; 031import java.util.Enumeration; 032import java.util.Map; 033import java.util.Properties; 034 035/** 036 * @since 2.12 037 */ 038public final class ConfigurationUtils { 039 040 private ConfigurationUtils() { 041 } 042 043 public static void copyProperties(Properties from, Map<String, String> to) { 044 for (Map.Entry<Object, Object> entry : from.entrySet()) { 045 String key = (String) entry.getKey(); 046 to.put(key, entry.getValue().toString()); 047 } 048 } 049 050 public static Properties openProperties(File file) throws IOException { 051 FileInputStream input = FileUtils.openInputStream(file); 052 return readInputStream(input); 053 } 054 055 /** 056 * Note that the input stream is closed in this method. 057 */ 058 public static Properties readInputStream(InputStream input) throws IOException { 059 try { 060 Properties p = new Properties(); 061 p.load(input); 062 return p; 063 064 } finally { 065 IOUtils.closeQuietly(input); 066 } 067 } 068 069 public static Properties interpolateEnvVariables(Properties properties) { 070 return interpolateVariables(properties, System.getenv()); 071 } 072 073 public static Properties interpolateVariables(Properties properties, Map<String, String> variables) { 074 Properties result = new Properties(); 075 Enumeration keys = properties.keys(); 076 while (keys.hasMoreElements()) { 077 String key = (String) keys.nextElement(); 078 String value = (String) properties.get(key); 079 String interpolatedValue = StrSubstitutor.replace(value, variables, "${env:", "}"); 080 result.setProperty(key, interpolatedValue); 081 } 082 return result; 083 } 084 085 public static void copyToCommonsConfiguration(Map<String, String> input, Configuration commonsConfig) { 086 // update deprecated configuration 087 commonsConfig.clear(); 088 for (Map.Entry<String, String> entry : input.entrySet()) { 089 String key = entry.getKey(); 090 commonsConfig.setProperty(key, entry.getValue()); 091 } 092 } 093}