118 lines
4.1 KiB
Java
118 lines
4.1 KiB
Java
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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package netscape.ldap;
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import 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 {
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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, ie, the 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, ie, the name contains
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* no locale context and no . suffix
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* @param The locale string being inserted within the file name.
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* @return The input stream on 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 given message being 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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