jdk8-mips64-public/jaxws: src/share/jaxws_classes/com/sun/xml/internal/dtdparser/MessageCatalog.java@9c07ef4934dd (annotated)

src/share/jaxws_classes/com/sun/xml/internal/dtdparser/MessageCatalog.java@9c07ef4934dd (annotated)

src/share/jaxws_classes/com/sun/xml/internal/dtdparser/MessageCatalog.java

Thu, 31 Aug 2017 15:18:52 +0800

author: aoqi
date: Thu, 31 Aug 2017 15:18:52 +0800
changeset 637: 9c07ef4934dd
parent 397: b99d7e355d4b
parent 0: 373ffda63c9a
permissions: -rw-r--r--

merge

 /*
  * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Oracle in the LICENSE file that accompanied this code.
  *
  * This code 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 General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
 package com.sun.xml.internal.dtdparser;
 import java.io.InputStream;
 import java.text.FieldPosition;
 import java.text.MessageFormat;
 import java.util.Hashtable;
 import java.util.Locale;
 import java.util.MissingResourceException;
 import java.util.ResourceBundle;
 /**
  * This class provides support for multi-language string lookup, as needed
  * to localize messages from applications supporting multiple languages
  * at the same time.  One class of such applications is network services,
  * such as HTTP servers, which talk to clients who may not be from the
  * same locale as the server.  This class supports a form of negotiation
  * for the language used in presenting a message from some package, where
  * both user (client) preferences and application (server) support are
  * accounted for when choosing locales and formatting messages.
  * <p/>
  * <P> Each package should have a singleton package-private message catalog
  * class.  This ensures that the correct class loader will always be used to
  * access message resources, and minimizes use of memory: <PRE>
  * package <em>some.package</em>;
  * <p/>
  * // "foo" might be public
  * class foo {
  * ...
  * // package private
  * static final Catalog messages = new Catalog ();
  * static final class Catalog extends MessageCatalog {
  * Catalog () { super (Catalog.class); }
  * }
  * ...
  * }
  * </PRE>
  * <p/>
  * <P> Messages for a known client could be generated using code
  * something like this:  <PRE>
  * String clientLanguages [];
  * Locale clientLocale;
  * String clientMessage;
  * <p/>
  * // client languages will probably be provided by client,
  * // e.g. by an HTTP/1.1 "Accept-Language" header.
  * clientLanguages = new String [] { "en-ca", "fr-ca", "ja", "zh" };
  * clientLocale = foo.messages.chooseLocale (clientLanguages);
  * clientMessage = foo.messages.getMessage (clientLocale,
  * "fileCount",
  * new Object [] { new Integer (numberOfFiles) }
  * );
  * </PRE>
  * <p/>
  * <P> At this time, this class does not include functionality permitting
  * messages to be passed around and localized after-the-fact.  The consequence
  * of this is that the locale for messages must be passed down through layers
  * which have no normal reason to support such passdown, or else the system
  * default locale must be used instead of the one the client needs.
  * <p/>
  * <P> <hr> The following guidelines should be used when constructiong
  * multi-language applications:  <OL>
  * <p/>
  * <LI> Always use <a href=#chooseLocale>chooseLocale</a> to select the
  * locale you pass to your <code>getMessage</code> call.  This lets your
  * applications use IETF standard locale names, and avoids needless
  * use of system defaults.
  * <p/>
  * <LI> The localized messages for a given package should always go in
  * a separate <em>resources</em> sub-package.  There are security
  * implications; see below.
  * <p/>
  * <LI> Make sure that a language name is included in each bundle name,
  * so that the developer's locale will not be inadvertently used. That
  * is, don't create defaults like <em>resources/Messages.properties</em>
  * or <em>resources/Messages.class</em>, since ResourceBundle will choose
  * such defaults rather than giving software a chance to choose a more
  * appropriate language for its messages.  Your message bundles should
  * have names like <em>Messages_en.properties</em> (for the "en", or
  * English, language) or <em>Messages_ja.class</em> ("ja" indicates the
  * Japanese language).
  * <p/>
  * <LI> Only use property files for messages in languages which can
  * be limited to the ISO Latin/1 (8859-1) characters supported by the
  * property file format.  (This is mostly Western European languages.)
  * Otherwise, subclass ResourceBundle to provide your messages; it is
  * simplest to subclass <code>java.util.ListResourceBundle</code>.
  * <p/>
  * <LI> Never use another package's message catalog or resource bundles.
  * It should not be possible for a change internal to one package (such
  * as eliminating or improving messages) to break another package.
  * <p/>
  * </OL>
  * <p/>
  * <P> The "resources" sub-package can be treated separately from the
  * package with which it is associated.  That main package may be sealed
  * and possibly signed, preventing other software from adding classes to
  * the package which would be able to access methods and data which are
  * not designed to be publicly accessible.  On the other hand, resources
  * such as localized messages are often provided after initial product
  * shipment, without a full release cycle for the product.  Such files
  * (text and class files) need to be added to some package.  Since they
  * should not be added to the main package, the "resources" subpackage is
  * used without risking the security or integrity of that main package
  * as distributed in its JAR file.
  *
  * @author David Brownell
  * @version 1.1, 00/08/05
  * @see java.util.Locale
  * @see java.util.ListResourceBundle
  * @see java.text.MessageFormat
  */
 // leave this as "abstract" -- each package needs its own subclass,
 // else it's not always going to be using the right class loader.
 abstract public class MessageCatalog {
     private String bundleName;
     /**
      * Create a message catalog for use by classes in the same package
      * as the specified class.  This uses <em>Messages</em> resource
      * bundles in the <em>resources</em> sub-package of class passed as
      * a parameter.
      *
      * @param packageMember Class whose package has localized messages
      */
     protected MessageCatalog(Class packageMember) {
         this(packageMember, "Messages");
     }
     /**
      * Create a message catalog for use by classes in the same package
      * as the specified class.  This uses the specified resource
      * bundle name in the <em>resources</em> sub-package of class passed
      * as a parameter; for example, <em>resources.Messages</em>.
      *
      * @param packageMember Class whose package has localized messages
      * @param bundle        Name of a group of resource bundles
      */
     private MessageCatalog(Class packageMember, String bundle) {
         int index;
         bundleName = packageMember.getName();
         index = bundleName.lastIndexOf('.');
         if (index == -1)    // "ClassName"
             bundleName = "";
         else            // "some.package.ClassName"
             bundleName = bundleName.substring(0, index) + ".";
         bundleName = bundleName + "resources." + bundle;
     }
     /**
      * Get a message localized to the specified locale, using the message ID
      * and package name if no message is available.  The locale is normally
      * that of the client of a service, chosen with knowledge that both the
      * client and this server support that locale.  There are two error
      * cases:  first, when the specified locale is unsupported or null, the
      * default locale is used if possible; second, when no bundle supports
      * that locale, the message ID and package name are used.
      *
      * @param locale    The locale of the message to use.  If this is null,
      *                  the default locale will be used.
      * @param messageId The ID of the message to use.
      * @return The message, localized as described above.
      */
     public String getMessage(Locale locale,
                              String messageId) {
         ResourceBundle bundle;
         // cope with unsupported locale...
         if (locale == null)
             locale = Locale.getDefault();
         try {
             bundle = ResourceBundle.getBundle(bundleName, locale);
         } catch (MissingResourceException e) {
             bundle = ResourceBundle.getBundle(bundleName, Locale.ENGLISH);
         }
         return bundle.getString(messageId);
     }
     /**
      * Format a message localized to the specified locale, using the message
      * ID with its package name if none is available.  The locale is normally
      * the client of a service, chosen with knowledge that both the client
      * server support that locale.  There are two error cases:  first, if the
      * specified locale is unsupported or null, the default locale is used if
      * possible; second, when no bundle supports that locale, the message ID
      * and package name are used.
      *
      * @param locale     The locale of the message to use.  If this is null,
      *                   the default locale will be used.
      * @param messageId  The ID of the message format to use.
      * @param parameters Used when formatting the message.  Objects in
      *                   this list are turned to strings if they are not Strings, Numbers,
      *                   or Dates (that is, if MessageFormat would treat them as errors).
      * @return The message, localized as described above.
      * @see java.text.MessageFormat
      */
     public String getMessage(Locale locale,
                              String messageId,
                              Object parameters []) {
         if (parameters == null)
             return getMessage(locale, messageId);
         // since most messages won't be tested (sigh), be friendly to
         // the inevitable developer errors of passing random data types
         // to the message formatting code.
         for (int i = 0; i < parameters.length; i++) {
             if (!(parameters[i] instanceof String)
                     && !(parameters[i] instanceof Number)
                     && !(parameters[i] instanceof java.util.Date)) {
                 if (parameters[i] == null)
                     parameters[i] = "(null)";
                 else
                     parameters[i] = parameters[i].toString();
             }
         }
         // similarly, cope with unsupported locale...
         if (locale == null)
             locale = Locale.getDefault();
         // get the appropriately localized MessageFormat object
         ResourceBundle bundle;
         MessageFormat format;
         try {
             bundle = ResourceBundle.getBundle(bundleName, locale);
         } catch (MissingResourceException e) {
             bundle = ResourceBundle.getBundle(bundleName, Locale.ENGLISH);
             /*String retval;
             retval = packagePrefix (messageId);
             for (int i = 0; i < parameters.length; i++) {
             retval += ' ';
             retval += parameters [i];
             }
             return retval;*/
         }
         format = new MessageFormat(bundle.getString(messageId));
         format.setLocale(locale);
         // return the formatted message
         StringBuffer result = new StringBuffer();
         result = format.format(parameters, result, new FieldPosition(0));
         return result.toString();
     }
     /**
      * Chooses a client locale to use, using the first language specified in
      * the list that is supported by this catalog.  If none of the specified
      * languages is supported, a null value is returned.  Such a list of
      * languages might be provided in an HTTP/1.1 "Accept-Language" header
      * field, or through some other content negotiation mechanism.
      * <p/>
      * <P> The language specifiers recognized are RFC 1766 style ("fr" for
      * all French, "fr-ca" for Canadian French), although only the strict
      * ISO subset (two letter language and country specifiers) is currently
      * supported.  Java-style locale strings ("fr_CA") are also supported.
      *
      * @param languages Array of language specifiers, ordered with the most
      *                  preferable one at the front.  For example, "en-ca" then "fr-ca",
      *                  followed by "zh_CN".
      * @return The most preferable supported locale, or null.
      * @see java.util.Locale
      */
     public Locale chooseLocale(String languages []) {
         if ((languages = canonicalize(languages)) != null) {
             for (int i = 0; i < languages.length; i++)
                 if (isLocaleSupported(languages[i]))
                     return getLocale(languages[i]);
         }
         return null;
     }
     //
     // Canonicalizes the RFC 1766 style language strings ("en-in") to
     // match standard Java usage ("en_IN"), removing strings that don't
     // use two character ISO language and country codes.   Avoids all
     // memory allocations possible, so that if the strings passed in are
     // just lowercase ISO codes (a common case) the input is returned.
     //
     private String[] canonicalize(String languages []) {
         boolean didClone = false;
         int trimCount = 0;
         if (languages == null)
             return languages;
         for (int i = 0; i < languages.length; i++) {
             String lang = languages[i];
             int len = lang.length();
             // no RFC1766 extensions allowed; "zh" and "zh-tw" (etc) are OK
             // as are regular locale names with no variant ("de_CH").
             if (!(len == 2 || len == 5)) {
                 if (!didClone) {
                     languages = (String[]) languages.clone();
                     didClone = true;
                 }
                 languages[i] = null;
                 trimCount++;
                 continue;
             }
             // language code ... if already lowercase, we change nothing
             if (len == 2) {
                 lang = lang.toLowerCase();
                 if (lang != languages[i]) {
                     if (!didClone) {
                         languages = (String[]) languages.clone();
                         didClone = true;
                     }
                     languages[i] = lang;
                 }
                 continue;
             }
             // language_country ... fixup case, force "_"
             char buf [] = new char[5];
             buf[0] = Character.toLowerCase(lang.charAt(0));
             buf[1] = Character.toLowerCase(lang.charAt(1));
             buf[2] = '_';
             buf[3] = Character.toUpperCase(lang.charAt(3));
             buf[4] = Character.toUpperCase(lang.charAt(4));
             if (!didClone) {
                 languages = (String[]) languages.clone();
                 didClone = true;
             }
             languages[i] = new String(buf);
         }
         // purge any shadows of deleted RFC1766 extended language codes
         if (trimCount != 0) {
             String temp [] = new String[languages.length - trimCount];
             int i;
             for (i = 0, trimCount = 0; i < temp.length; i++) {
                 while (languages[i + trimCount] == null)
                     trimCount++;
                 temp[i] = languages[i + trimCount];
             }
             languages = temp;
         }
         return languages;
     }
     //
     // Returns a locale object supporting the specified locale, using
     // a small cache to speed up some common languages and reduce the
     // needless allocation of memory.
     //
     private Locale getLocale(String localeName) {
         String language, country;
         int index;
         index = localeName.indexOf('_');
         if (index == -1) {
             //
             // Special case the builtin JDK languages
             //
             if (localeName.equals("de"))
                 return Locale.GERMAN;
             if (localeName.equals("en"))
                 return Locale.ENGLISH;
             if (localeName.equals("fr"))
                 return Locale.FRENCH;
             if (localeName.equals("it"))
                 return Locale.ITALIAN;
             if (localeName.equals("ja"))
                 return Locale.JAPANESE;
             if (localeName.equals("ko"))
                 return Locale.KOREAN;
             if (localeName.equals("zh"))
                 return Locale.CHINESE;
             language = localeName;
             country = "";
         } else {
             if (localeName.equals("zh_CN"))
                 return Locale.SIMPLIFIED_CHINESE;
             if (localeName.equals("zh_TW"))
                 return Locale.TRADITIONAL_CHINESE;
             //
             // JDK also has constants for countries:  en_GB, en_US, en_CA,
             // fr_FR, fr_CA, de_DE, ja_JP, ko_KR.  We don't use those.
             //
             language = localeName.substring(0, index);
             country = localeName.substring(index + 1);
         }
         return new Locale(language, country);
     }
     //
     // cache for isLanguageSupported(), below ... key is a language
     // or locale name, value is a Boolean
     //
     private Hashtable cache = new Hashtable(5);
     /**
      * Returns true iff the specified locale has explicit language support.
      * For example, the traditional Chinese locale "zh_TW" has such support
      * if there are message bundles suffixed with either "zh_TW" or "zh".
      * <p/>
      * <P> This method is used to bypass part of the search path mechanism
      * of the <code>ResourceBundle</code> class, specifically the parts which
      * force use of default locales and bundles.  Such bypassing is required
      * in order to enable use of a client's preferred languages.  Following
      * the above example, if a client prefers "zh_TW" but can also accept
      * "ja", this method would be used to detect that there are no "zh_TW"
      * resource bundles and hence that "ja" messages should be used.  This
      * bypasses the ResourceBundle mechanism which will return messages in
      * some other locale (picking some hard-to-anticipate default) instead
      * of reporting an error and letting the client choose another locale.
      *
      * @param localeName A standard Java locale name, using two character
      *                   language codes optionally suffixed by country codes.
      * @return True iff the language of that locale is supported.
      * @see java.util.Locale
      */
     public boolean isLocaleSupported(String localeName) {
         //
         // Use previous results if possible.  We expect that the codebase
         // is immutable, so we never worry about changing the cache.
         //
         Boolean value = (Boolean) cache.get(localeName);
         if (value != null)
             return value.booleanValue();
         //
         // Try "language_country_variant", then "language_country",
         // then finally "language" ... assuming the longest locale name
         // is passed.  If not, we'll try fewer options.
         //
         ClassLoader loader = null;
         for (; ;) {
             String name = bundleName + "_" + localeName;
             // look up classes ...
             try {
                 Class.forName(name);
                 cache.put(localeName, Boolean.TRUE);
                 return true;
             } catch (Exception e) {
             }
             // ... then property files (only for ISO Latin/1 messages)
             InputStream in;
             if (loader == null)
                 loader = getClass().getClassLoader();
             name = name.replace('.', '/');
             name = name + ".properties";
             if (loader == null)
                 in = ClassLoader.getSystemResourceAsStream(name);
             else
                 in = loader.getResourceAsStream(name);
             if (in != null) {
                 cache.put(localeName, Boolean.TRUE);
                 return true;
             }
             int index = localeName.indexOf('_');
             if (index > 0)
                 localeName = localeName.substring(0, index);
             else
                 break;
         }
         //
         // If we got this far, we failed.  Remember for later.
         //
         cache.put(localeName, Boolean.FALSE);
         return false;
     }
 }

Mercurial > jdk8-mips64-public > jaxws / annotate

src/share/jaxws_classes/com/sun/xml/internal/dtdparser/MessageCatalog.java@9c07ef4934dd (annotated)

src/share/jaxws_classes/com/sun/xml/internal/dtdparser/MessageCatalog.java