// 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

// 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 com.cloud.utils;

import java.io.File;

import java.io.IOException;

import java.io.InputStream;

import java.net.URL;

import java.util.HashMap;

import java.util.Map;

import java.util.Properties;

import java.util.Set;

import org.apache.log4j.Logger;

public class PropertiesUtil {

/**

* Searches the class path and local paths to find the config file.

* @param path path to find. if it starts with / then it's absolute path.

* @return File or null if not found at all.

*/

public static File findConfigFile(String path) {

ClassLoader cl = PropertiesUtil.class.getClassLoader();

URL url = cl.getResource(path);

if (url != null) {

return new File(url.getFile());

}

url = ClassLoader.getSystemResource(path);

if (url != null) {

return new File(url.getFile());

}

File file = new File(path);

if (file.exists()) {

return file;

}

String newPath = "conf" + (path.startsWith(File.separator) ? "" : "/") + path;

url = ClassLoader.getSystemResource(newPath);

if (url != null) {

return new File(url.getFile());

}

url = cl.getResource(newPath);

if (url != null) {

return new File(url.getFile());

}

newPath = "conf" + (path.startsWith(File.separator) ? "" : File.separator) + path;

file = new File(newPath);

if (file.exists()) {

return file;

}

newPath = System.getenv("CATALINA_HOME");

if (newPath == null) {

newPath = System.getenv("CATALINA_BASE");

}

if (newPath == null) {

newPath = System.getProperty("catalina.home");

}

if (newPath == null) {

return null;

}

file = new File(newPath + File.separator + "conf" + File.separator + path);

if (file.exists()) {

return file;

}

return null;

}

public static Map<String, Object> toMap(Properties props) {

Set<String> names = props.stringPropertyNames();

HashMap<String, Object> map = new HashMap<String, Object>(names.size());

for (String name : names) {

map.put(name, props.getProperty(name));

}

return map;

}

/*

* Returns an InputStream for the given resource

* This is needed to read the files within a jar in classpath.

*/

public static InputStream openStreamFromURL(String path){

ClassLoader cl = PropertiesUtil.class.getClassLoader();

URL url = cl.getResource(path);

if (url != null) {

try{

InputStream stream = url.openStream();

return stream;

} catch (IOException ioex) {

return null;

}

}

return null;

}

}