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/*
* $Id: $
*
* Copyright 2009 by Paulo Soares.
*
* The contents of this file are subject to the Mozilla Public License Version 1.1
* (the "License"); you may not use this file except in compliance with the License.
* You may obtain a copy of the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the License.
*
* The Original Code is 'iText, a free JAVA-PDF library'.
*
* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
* the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
* All Rights Reserved.
* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
* are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
*
* Contributor(s): all the names of the contributors are added in the source code
* where applicable.
*
* Alternatively, the contents of this file may be used under the terms of the
* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
* provisions of LGPL are applicable instead of those above. If you wish to
* allow use of your version of this file only under the terms of the LGPL
* License and not to allow others to use your version of this file under
* the MPL, indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by the LGPL.
* If you do not delete the provisions above, a recipient may use your version
* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the MPL as stated above or under the terms of the GNU
* Library General Public License as published by the Free Software Foundation;
* either version 2 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
* details.
*
* If you didn't download this code from the following link, you should check if
* you aren't using an obsolete version:
* https://github.com/LibrePDF/OpenPDF
*/
package com.lowagie.text.error_messages;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.nio.charset.StandardCharsets;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import com.lowagie.text.pdf.BaseFont;
/**
* Localizes error messages. The messages are located in the package
* com.lowagie.text.error_messages in the form language_country.lng.
* The internal file encoding is UTF-8 without any escape chars, it's not a
* normal property file. See en.lng for more information on the internal format.
* @author Paulo Soares ([email protected])
*/
public final class MessageLocalization {
private static Map defaultLanguage = new HashMap<>();
private static Map currentLanguage;
private static final String BASE_PATH = "com/lowagie/text/error_messages/";
private MessageLocalization() {
}
static {
try {
defaultLanguage = getLanguageMessages("en", null);
} catch (Exception ex) {
// do nothing
}
if (defaultLanguage == null)
defaultLanguage = new HashMap<>();
}
/**
* Get a message without parameters.
* @param key the key to the message
* @return the message
*/
public static String getMessage(String key) {
Map cl = currentLanguage;
String val;
if (cl != null) {
val = cl.get(key);
if (val != null)
return val;
}
cl = defaultLanguage;
val = cl.get(key);
if (val != null)
return val;
return "No message found for " + key;
}
/**
* Get a message without parameters.
* @param key the key to the message
* @return the message
*/
public static String getComposedMessage(String key) {
return getComposedMessage(key, null, null, null, null);
}
/**
* Get a message with one parameter. The parameter will replace the string
* "{1}" found in the message.
* @param key the key to the message
* @param p1 the parameter
* @return the message
*/
public static String getComposedMessage(String key, Object p1) {
return getComposedMessage(key, p1, null, null, null);
}
/**
* Get a message with one parameter. The parameter will replace the string
* "{1}" found in the message.
* @param key the key to the message
* @param p1 the parameter
* @return the message
*/
public static String getComposedMessage(String key, int p1) {
return getComposedMessage(key, String.valueOf(p1), null, null, null);
}
/**
* Get a message with one parameter. The parameter will replace the string
* "{1}", "{2}" found in the message.
* @param key the key to the message
* @param p1 the parameter
* @param p2 the parameter
* @return the message
*/
public static String getComposedMessage(String key, Object p1, Object p2) {
return getComposedMessage(key, p1, p2, null, null);
}
/**
* Get a message with one parameter. The parameter will replace the string
* "{1}", "{2}", "{3}" found in the message.
* @param key the key to the message
* @param p1 the parameter
* @param p2 the parameter
* @param p3 the parameter
* @return the message
*/
public static String getComposedMessage(String key, Object p1, Object p2, Object p3) {
return getComposedMessage(key, p1, p2, p3, null);
}
/**
* Get a message with two parameters. The parameters will replace the strings
* "{1}", "{2}", "{3}", "{4}" found in the message.
* @param key the key to the message
* @param p1 the parameter
* @param p2 the parameter
* @param p3 the parameter
* @param p4 the parameter
* @return the message
*/
public static String getComposedMessage(String key, Object p1, Object p2, Object p3, Object p4) {
String msg = getMessage(key);
if (p1 != null) {
msg = msg.replace("{1}", p1.toString());
}
if (p2 != null) {
msg = msg.replace("{2}", p2.toString());
}
if (p3 != null) {
msg = msg.replace("{3}", p3.toString());
}
if (p4 != null) {
msg = msg.replace("{4}", p4.toString());
}
return msg;
}
/**
* Sets the language to be used globally for the error messages. The language
* is a two letter lowercase country designation like "en" or "pt". The country
* is an optional two letter uppercase code like "US" or "PT".
* @param language the language
* @param country the country
* @return true if the language was found, false otherwise
* @throws IOException on error
*/
public static boolean setLanguage(String language, String country) throws IOException {
Map lang = getLanguageMessages(language, country);
if (lang == null)
return false;
currentLanguage = lang;
return true;
}
/**
* Sets the error messages directly from a Reader.
* @param r the Reader
* @throws IOException on error
*/
public static void setMessages(Reader r) throws IOException {
currentLanguage = readLanguageStream(r);
}
private static Map getLanguageMessages(String language, String country) throws IOException {
if (language == null)
throw new IllegalArgumentException("The language cannot be null.");
InputStream is = null;
try {
String file;
if (country != null)
file = language + "_" + country + ".lng";
else
file = language + ".lng";
is = BaseFont.getResourceStream(BASE_PATH + file, MessageLocalization.class.getClassLoader());
if (is != null)
return readLanguageStream(is);
if (country == null)
return null;
file = language + ".lng";
is = BaseFont.getResourceStream(BASE_PATH + file, MessageLocalization.class.getClassLoader());
if (is != null)
return readLanguageStream(is);
else
return null;
}
finally {
try {
if (is != null) {
is.close();
}
} catch (Exception ignored) {
// do nothing
}
}
}
private static Map readLanguageStream(InputStream is) throws IOException {
return readLanguageStream(new InputStreamReader(is, StandardCharsets.UTF_8));
}
private static Map readLanguageStream(Reader r) throws IOException {
Map lang = new HashMap<>();
BufferedReader br = new BufferedReader(r);
String line;
while ((line = br.readLine()) != null) {
int idxeq = line.indexOf('=');
if (idxeq < 0) {
continue;
}
String key = line.substring(0, idxeq).trim();
if (key.startsWith("#")) {
continue;
}
lang.put(key, line.substring(idxeq + 1));
}
return lang;
}
// For tests only
public static Set getAllKeys() {
return defaultLanguage.keySet();
}
}
