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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
* a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
* identifying information: "Portions Copyrighted [year]
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*
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*
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
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* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
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*/
package com.sun.enterprise.cli.framework;
import java.util.Locale;
import java.io.File;
import java.io.InputStream;
import java.io.Reader;
import java.util.Iterator;
import java.util.NoSuchElementException;
import java.util.List;
import java.util.Collections;
import java.util.ArrayList;
import java.io.InputStreamReader;
/**
* A utility class which gets the I18N xml help file name for the
* given command. It searches (using Class.getSystemResource()) for
* the pages, and returns the first one found.
*
* For any given man page multiple instances of that page can
* exist. Man pages are come in sections (1 through 9, 1m through
* 9m), locales (language, country, variant), and by command
* version. These instances are ordered by section number (1 - 9, 1m
* - 9m), local
* specificity (most specific to least specific) and then by version
* (later versions before earlier versions).
*
* This is probably not what is wanted (I think what is
* wanted is versions before sections before language specificity),
* but is this way because of the way the Java Class.getResource()
* mechanism works.
*
* All methods will throw a NullPointerException if given null object
* arguments.
*
* All methods will throw an IllegalArgumentException if their
* arguments are non-null but are otherwise meaningless.
*/
public class CLIManFileFinder
{
/**
* Get the man page for the given command, using the default locale
*
* @param commandName the name of the command
*/
public Reader getCommandManFile(String commandName) {
return getCommandManFile(commandName, Locale.getDefault());
}
/**
* Get the man page for the given command for the given locale
* @param commandName the name of the command
* @param currentLocale the locale to be used to find the man page
*/
public Reader getCommandManFile(String commandName, Locale currentLocale) {
return getCommandManFile(commandName, currentLocale, this.getClass().getClassLoader());
}
/**
* Get the man page for the given command for the given locale
* using the give classloader.
*
* @param commandName the name of the command
* @param locale the locale to be used to find the man page
* @param classLoader the class loader to be used to find the
* man page
*/
public Reader getCommandManFile(String commandName, Locale locale, ClassLoader classLoader){
if (commandName.length() == 0) {
throw new IllegalArgumentException ("Command name cannot be empty");
}
InputStream s = null;
// special case "help" --> "asadmin"
if(commandName.equals("help"))
commandName = "asadmin";
Iterator it = getPossibleLocations(commandName, locale);
while (s == null && it.hasNext()){
s = classLoader.getResourceAsStream((String) it.next());
}
return (s == null ? (InputStreamReader) null : new InputStreamReader(s));
}
Iterator getPossibleLocations(final String commandName, final Locale locale){
return new Iterator(){
final String[] locales = getLocaleLocations(locale);
int i = 0;
int j = 0;
private String HELPDIR = getHelpDir(commandName);
private String getHelpDir(String commandName) {
//The manpage are assumed to be packaged with the command class.
//If not, then take the default location.
try {
CLIDescriptorsReader cdr = CLIDescriptorsReader.getInstance();
String className = cdr.getCommand(commandName).getClassName();
Class commandClass = Class.forName(className);
Package pkg = commandClass.getPackage();
return pkg.getName().replace('.', '/');
}
catch (Exception e) {
//if unable to get the command or class then set it
//to the default location.
return "com/sun/enterprise/admin/cli";
}
}
public boolean hasNext() {
return i < locales.length && j < sections.length;
}
public Object next() throws NoSuchElementException{
if (!hasNext()){
throw new NoSuchElementException();
}
final String result = HELPDIR + locales[i] + "/" + commandName+"." + sections[j++];
if (j == sections.length) {
i++;
if (i < locales.length ){
j = 0;
}
}
CLILogger.getInstance().printDebugMessage("Trying to get this manpage: " + result);
return result;
}
public void remove() {
throw new UnsupportedOperationException();
}
};
}
String[] getLocaleLocations(Locale locale){
String language = locale.getLanguage();
String country = locale.getCountry();
String variant = locale.getVariant();
List l = new ArrayList();
l.add("");
if (language != null && language.length() > 0) {
l.add("/" + language);
if (country != null && country.length() > 0){
l.add("/" + language +"/"+country);
if (variant != null && variant.length() > 0){
l.add("/" + language +"/" + country +"/" + variant);
}
}
}
Collections.reverse(l);
return (String[]) l.toArray(new String[0]);
}
private static final String[] sections = {
"1", "1m", "2", "2m", "3", "3m", "4", "4m", "5", "5m", "6", "6m", "7", "7m", "8", "8m", "9", "9m", "5asc"};
}
