org.jpedal.utils.Messages Maven / Gradle / Ivy
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/*
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.idrsolutions.com
* Help section for developers at http://www.idrsolutions.com/java-pdf-library-support/
*
* (C) Copyright 1997-2013, IDRsolutions and Contributors.
*
* This file is part of JPedal
*
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* ---------------
* Messages.java
* ---------------
*/
package org.jpedal.utils;
import java.io.BufferedReader;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import java.util.ResourceBundle;
import java.util.StringTokenizer;
/**
* provides all internationalised messages and a routine to support in Java 1.3 as well
*/
public class Messages {
/** fall back for messages (ie if using 1.3) */
private static Map messages = null;
/** log values not found so not repeateded */
private static Map reportedValueMissing = new HashMap();
/** localized text bundle */
protected static ResourceBundle bundle = null;
private static boolean isInitialised = false;
/** set bundle */
public static void setBundle(ResourceBundle newBundle) {
bundle = newBundle;
if (!isInitialised) init();
}
public static ResourceBundle getBundle() {
return bundle;
}
/**
* display message from message bundle or name if problem
*/
public static String getMessage(String key) {
String message = null;
try {
message = (String) messages.get(key);
if (message == null) message = bundle.getString(key);
}
catch (Exception e) {
// tell user and log
if (LogWriter.isOutput()) LogWriter.writeLog("Exception: " + e.getMessage());
}
// trap for 1.3 or missing
if (message == null) {
try {
message = (String) messages.get(key);
}
catch (Exception e) {
// tell user and log
if (LogWriter.isOutput()) LogWriter.writeLog("Exception: " + e.getMessage());
}
}
// if still null use message key
if (message == null) message = key;
if (message.length() == 0) message = key + "<<";
return message;
}
/**
* reads message bundle manually if needed (bug in 1.3.0)
*/
private static void init() {
isInitialised = true;
String line;
BufferedReader input_stream = null;
// ClassLoader loader = Messages.class.getClassLoader();
/** must use windows encoding because files were edited on Windows */
// String enc = "Cp1252";
// int equalsIndex;
try {
// initialise inverse lookup (add space)
messages = new HashMap();
// String targetFile="messages.properties";
//
// String ID=bundle.getLocale().toString();
// if(ID.length()==0 || ID.startsWith("en")){
// targetFile="messages.properties";
// }else{
// targetFile="messages_"+ID+".properties";
// }
// String customBundle=System.getProperty("org.jpedal.bundleLocation");
// customBundle="org.jpedal.international.messages"; //test code
// if(customBundle!=null){
// String customBundleLocation=customBundle.replaceAll("\\.","/");
//
// if(ID.length()==0 || ID.startsWith("en")){
// targetFile=".properties";
// }else{
// targetFile="_"+ID+".properties";
// }
//
// input_stream =
// new BufferedReader(
// new InputStreamReader(
// loader.getResourceAsStream(
// customBundleLocation+targetFile),
// enc));
//
// }else{
//
// input_stream =
// new BufferedReader(
// new InputStreamReader(
// loader.getResourceAsStream(
// "org/jpedal/international/"+targetFile),
// enc));
//
// }
// trap problems
if (input_stream == null) LogWriter.writeLog("Unable to open messages.properties from jar");
Enumeration keys = bundle.getKeys();
while (keys.hasMoreElements()) {
String element = (String) keys.nextElement();
// read in lines and place in map for fast lookup
// while (true) {
line = (String) bundle.getObject(element);
if (line == null) break;
// get raw string
StringBuilder newMessage = new StringBuilder();
// work through string converting #; values to unicde
// Convert &#int to ascii
StringTokenizer t = new StringTokenizer(line, "\\&;", true);
String nextValue;
boolean isAmpersand = false;
while (t.hasMoreTokens()) {
if (isAmpersand) {
nextValue = "&";
isAmpersand = false;
}
else nextValue = t.nextToken();
// if token is &, we have found an ascii char
// and need to convert
// othwerwise just add back
// Check for escape characters
if (t.hasMoreTokens() && nextValue.equals("\\")) {
String ascii = t.nextToken(); // actual value
char c = ascii.charAt(0);
// Check to see if escape is a newline
if (c == 'n') {
newMessage.append('\n');
}
else
if (c == ' ') {
newMessage.append(' ');
}
newMessage.append(ascii.substring(1));
}
else
if (t.hasMoreTokens() && nextValue.equals("&")) {
String ascii = t.nextToken(); // actual value
String end;
if (t.hasMoreTokens()) {
end = t.nextToken(); // read and ignore ;
if (end.equals("&")) {
newMessage.append('&');
newMessage.append(ascii);
isAmpersand = true;
}
else
if (end.equals(";")) {
if (ascii.startsWith("#")) ascii = ascii.substring(1);
// convert number to char
char c = (char) Integer.parseInt(ascii);
// add back to newMessage
newMessage.append(c);
}
else {
{
// get next char and check ;
if (t.hasMoreTokens()) newMessage.append('&');
newMessage.append(ascii);
}
}
}
else { // and last token
newMessage.append('&');
newMessage.append(ascii);
}
}
else newMessage.append(nextValue);
}
// System.out.println("final value="+newMessage.toString()+"<<");
// store converted message
messages.put(element, newMessage.toString());
}
}
catch (Exception e) {
e.printStackTrace();
LogWriter.writeLog("Exception " + e + " loading resource bundle.\n"
+ "Also check you have a file in org.jpedal.international.messages to support Locale=" + java.util.Locale.getDefault());
System.err.println("Exception loading resource bundle.\n"
+ "Also check you have a file in org.jpedal.international.messages to support Locale=" + java.util.Locale.getDefault());
}
// ensure closed
if (input_stream != null) {
try {
input_stream.close();
}
catch (Exception e) {
LogWriter.writeLog("Exception " + e + " reading lookup table for pdf for abobe map");
}
}
}
public static void dispose() {
messages = null;
reportedValueMissing = null;
bundle = null;
isInitialised = false;
}
}