зеркало из https://github.com/mozilla/gecko-dev.git
73 строки
3.0 KiB
Java
73 строки
3.0 KiB
Java
/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil -*-
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.0 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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* the License for the specific language governing rights and limitations
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* under the License.
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*
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* The Original Code is the Grendel mail/news client.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are Copyright (C) 1997
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* Netscape Communications Corporation. All Rights Reserved.
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*/
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package calypso.util;
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import java.util.*;
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import java.net.*;
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public class ConfigUtils {
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private static String gFileSeparator = System.getProperty("file.separator");
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private static String gUserDir = System.getProperty("user.dir");
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/**
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* This is the standardized place for getting a list of URLs which
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* you should search, in order, when trying to locate a resource
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* which may be overridden by external files. This is used, at time
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* of writing, by the Configuration system, which looks for things
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* within packages, but first looks for external files which will
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* effectively replace the package resources.
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* aBaseClass is necessary if aLocation refers to a resource
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* (which it normally will). In this case, we will need a class loader.
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* supplied by aBaseClass.
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* @param aLocation The resource path for locating the resource in
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* its default location, a package. Use a full
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* name, like "/netscape/shell/imp/ShellConfig.xml".
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* Use a slash for the path separator character.
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* @param aBaseClass A base class using the same classloader as
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* aLocation. That is, a class from the same .jar file.
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* Can be null if aLocation is a simple local system file.
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* @return an enumeration of URLs to try, in order
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*/
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public static final Enumeration fileSearchURLs(
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String aLocation,
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Class aBaseClass) {
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URL url;
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int nameIndex = aLocation.lastIndexOf('/');
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String fileName = nameIndex >= 0 && nameIndex < aLocation.length()-1 ?
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aLocation.substring(nameIndex+1) : aLocation;
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Vector urls = new Vector(2,2);
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// first, try to find a file with the given name in the user directory.
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try {
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// can user.dir be off the net (not a file URL) on a Network Computer?
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urls.addElement(new URL("file", "", gUserDir + gFileSeparator + fileName));
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} catch (MalformedURLException mue) {
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}
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url = aBaseClass != null ? aBaseClass.getResource(aLocation) :
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ClassLoader.getSystemResource(aLocation);
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if (url != null)
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urls.addElement(url);
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return urls.elements();
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}
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}
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