138 lines
5.2 KiB
Java
138 lines
5.2 KiB
Java
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* 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" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1999
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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package netscape.ldap;
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import java.util.*;
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import java.io.*;
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/**
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* This class represents a locale-specific resource for a property file.
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* It retrieves the property file for the given base name including the
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* absolute path name and locale. The property file has to be located in the
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* CLASSPATH and the property file's suffix is .props.
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* <p>
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* If the specified locale is en and us and the base name of the file is
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* netscape/ldap/errors/ErrorCodes, then the class loader will search for
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* the file in the following order:
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* <pre>
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*
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* ErrorCodes_en_us.props
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* ErrorCodes_en.props
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* ErrorCodes.props
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*
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* </pre>
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* @see java.util.Locale
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*/
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class LDAPResourceBundle implements java.io.Serializable {
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static final long serialVersionUID = -5903986665461157980L;
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private static final boolean m_debug = false;
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private static final String m_suffix = ".props";
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private static final String m_locale_separator = "_";
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/**
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* Return the property resource bundle according to the base name of the
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* property file and the locale. The class loader will find the closest match
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* with the given locale.
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* @return the property resource bundle.
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* @exception IOException Gets thrown when failed to open the resource
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* bundle file.
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*/
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static PropertyResourceBundle getBundle(String baseName)
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throws IOException {
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return getBundle(baseName, Locale.getDefault());
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}
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/**
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* Return the property resource bundle according to the base name of the
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* property file and the locale. The class loader will find the closest match
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* with the given locale.
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* @param baseName the base name of the property file. The base name contains
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* no locale context and no . suffix.
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* @param l the locale
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* @return the property resource bundle.
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* @exception IOException Gets thrown when failed to create a property
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* resource
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*/
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static PropertyResourceBundle getBundle(String baseName, Locale l)
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throws IOException {
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String localeStr = m_locale_separator+l.toString();
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InputStream fin = null;
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while (true) {
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if ((fin=getStream(baseName, localeStr)) != null) {
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PropertyResourceBundle p = new PropertyResourceBundle(fin);
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return p;
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} else {
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int index = localeStr.lastIndexOf(m_locale_separator);
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if (index == -1) {
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printDebug("File "+baseName+localeStr+m_suffix+" not found");
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return null;
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} else
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localeStr = localeStr.substring(0, index);
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}
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}
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}
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/**
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* Constructs the whole absolute path name of a property file and retrieves
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* an input stream on the file.
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* @param baseName the base name of the property file. The base name contains
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* no locale context and no . suffix.
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* @param the locale string to insert into the file name
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* @return the input stream of the property file.
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*/
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private static InputStream getStream(String baseName, String locale) {
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String fStr = baseName+locale+m_suffix;
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return (ClassLoader.getSystemResourceAsStream(fStr));
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}
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/**
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* Prints debug messages if the debug mode is on.
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* @param str the message that is printed
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*/
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private static void printDebug(String str) {
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if (m_debug)
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System.out.println(str);
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}
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}
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