org.jpedal.utils.Messages Maven / Gradle / Ivy
/*
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.idrsolutions.com
* Help section for developers at http://www.idrsolutions.com/support/
*
* (C) Copyright 1997-2017 IDRsolutions and Contributors.
*
* This file is part of JPedal/JPDF2HTML5
*
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.*;
/**
* 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;
/**
* log values not found so not repeateded
*/
private static Set reportedValueMissing = new HashSet();
/**
* localized text bundle
*/
protected static ResourceBundle bundle;
private static boolean isInitialised;
/**
* set bundle
*/
public static void setBundle(final ResourceBundle newBundle) {
bundle = newBundle;
if (!isInitialised) {
init();
}
}
/**
* display message from message bundle or name if problem
*/
public static String getMessage(final String key) {
String message = null;
try {
message = messages.get(key);
if (message == null) {
message = bundle.getString(key);
}
} catch (final Exception e) {
if (LogWriter.isRunningFromIDE && !reportedValueMissing.contains(key)) {
System.err.println("error resource bundle expected for key " + key);
reportedValueMissing.add(key);
}
LogWriter.writeLog("Exception: " + e.getMessage() + " key=" + key);
}
//trap for 1.3 or missing
if (message == null) {
try {
message = messages.get(key);
} catch (final Exception e) {
LogWriter.writeLog("Exception: " + e.getMessage());
}
}
//if still null use message key
if (message == null) {
message = key;
}
if (message.isEmpty()) {
message = key + "<<";
}
return message;
}
/**
* reads message bundle manually if needed (bug in 1.3.0)
*/
private static void init() {
isInitialised = true;
String line;
final 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");
}
final Enumeration keys = bundle.getKeys();
while (keys.hasMoreElements()) {
final String element = 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
final StringBuilder newMessage = new StringBuilder();
//work through string converting #; values to unicde
//Convert &#int to ascii
final 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("\\")) {
final String ascii = t.nextToken(); //actual value
final 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
final 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
final 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 (final 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 (final 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;
}
}