/[schmitzm]/trunk/src/skrueger/i8n/I8NUtil.java
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revision 38 by alfonx, Sun Apr 5 15:06:56 2009 UTC revision 862 by alfonx, Sat May 22 01:24:46 2010 UTC
# Line 1  Line 1 
1    /*******************************************************************************
2     * Copyright (c) 2009 Martin O. J. Schmitz.
3     *
4     * This file is part of the SCHMITZM library - a collection of utility
5     * classes based on Java 1.6, focusing (not only) on Java Swing
6     * and the Geotools library.
7     *
8     * The SCHMITZM project is hosted at:
9     * http://wald.intevation.org/projects/schmitzm/
10     *
11     * This program is free software; you can redistribute it and/or
12     * modify it under the terms of the GNU Lesser General Public License
13     * as published by the Free Software Foundation; either version 3
14     * of the License, or (at your option) any later version.
15     *
16     * This program is distributed in the hope that it will be useful,
17     * but WITHOUT ANY WARRANTY; without even the implied warranty of
18     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19     * GNU General Public License for more details.
20     *
21     * You should have received a copy of the GNU Lesser General Public License (license.txt)
22     * along with this program; if not, write to the Free Software
23     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
24     * or try this link: http://www.gnu.org/licenses/lgpl.html
25     *
26     * Contributors:
27     *     Martin O. J. Schmitz - initial API and implementation
28     *     Stefan A. Tzeggai - additional utility classes
29     ******************************************************************************/
30  package skrueger.i8n;  package skrueger.i8n;
31    
32    import java.util.List;
33    import java.util.Locale;
34  import java.util.Set;  import java.util.Set;
35  import java.util.TreeSet;  import java.util.TreeSet;
36    
37    import org.apache.log4j.Logger;
38    
39  public class I8NUtil {  public class I8NUtil {
40                    static final Logger LOGGER = Logger.getLogger(I8NUtil.class);
41    
42          private static Set<String> languageCodes = new TreeSet<String>();          private static Set<String> languageCodes = new TreeSet<String>();
43          static {          static {
44          for (String code : java.util.Locale.getISOLanguages()) {                  for (Locale locale : java.util.Locale.getAvailableLocales()) {
45                  getLanguageCodes().add(code);                          getLanguageCodes().add(locale.getLanguage());
46          }                  }
47      }                  // for (String code : java.util.Locale.getISOLanguages()) {
48  //                        // getLanguageCodes().add(code);
49  //      /**                  // }
50  //       * @Returns an ImageIcon for a given ISO code or null.          }
51  //       * @param code ISO Country Code  
52  //       */          /**
53  //      public static ImageIcon getFlagIcon(String code) {           * Creates a {@link Translation}<br/>
54  //                         * <p>
55  //              String ressourcename = "resource/flags/" + code.toUpperCase() + ".gif";           * <li>If <code>oneLineCoded</code> is empty or null, NO TRANSLATION is set.
56  //                         * <li>If format can't be recognized, the {@link String} is interpreted as
57  //              URL resourceURL = TranslationEditJPanel.class.getResource(ressourcename);           * the translation in the <code>{@value #DEFAULT_KEY}</code> language
58  //                         *
59  //              if (resourceURL != null)           * @author Stefan Alfons Tzeggai
60  //                      return new ImageIcon( resourceURL);           */
61  //                        public static Translation createFromOneLIne(final String oneLineCoded) {
62  //              return new ImageIcon();                  Translation result = new Translation();
63  //      }                  result.fromOneLine(oneLineCoded);
64  //                        return result;
65  //      /**          }
66  //       * @Returns an {@link ImageIcon} flag for the language setup as Translation language  
67  //       */          /**
68  //      public static ImageIcon getFlagIcon() {           * Returns the Translation to a String of the Format: "de{Baum}en{tree}" <br/>
69  //              return getFlagIcon( Translation.getActiveLang() );           *
70  //      }           *
71                     * @author Stefan Alfons Tzeggai
72                     */
73            public static String toOneLine(Translation source) {
74                    StringBuffer oneLine = new StringBuffer();
75                    for (String key : source.keySet()) {
76                            oneLine.append(key + "{" + source.get(key) + "}");
77                    }
78                    return oneLine.toString();
79            }
80    
81          /**          /**
82           * @author Stefan Alfons Krüger           * @author Stefan Alfons Tzeggai
83           * @param code           * @param code
84           * @return true if the code paramter is a valid ISO Language code           * @return true if the code paramter is a valid ISO Language code
85           */           */
# Line 45  public class I8NUtil { Line 87  public class I8NUtil {
87                  return getLanguageCodes().contains(code);                  return getLanguageCodes().contains(code);
88          }          }
89    
   
90          /**          /**
91           * @return All language codes available in java.util.Locale.getISOLanguages() without duplicates.           * @return All language codes available in
92             *         java.util.Locale.getISOLanguages() without duplicates.
93           */           */
94          public static Set<String> getLanguageCodes() {          public static Set<String> getLanguageCodes() {
95                  return languageCodes;                  return languageCodes;
96          }          }
 }  
97    
98            /**
99             * @param code
100             *            A two-letter language code.
101             * @return <code>null</code> or one (of many possible) {@link Locale} that
102             *         uses this language.
103             */
104            public static Locale getLocaleFor(String code) {
105                    for (Locale l : Locale.getAvailableLocales()) {
106                            if (l.getLanguage().equals(code.toLowerCase())) {
107                                    return l;
108                            }
109                            // LOGGER.debug(l.getLanguage() + " not = " + code);
110                    }
111    
112                    LOGGER.error("Can't create a Locale for code " + code
113                                    + "! Returning the system default locale to avoid NPEs.");
114    
115                    return Locale.getDefault();
116            }
117    
118            /**
119             * A convenience method that checks if the {@link Translation} object
120             * contains a translation for the active language. A {@link String}
121             * containing only spaces will return <code>false</code>.
122             *
123             * @param trans
124             *            {@link Translation} to check.
125             */
126            public static boolean isEmpty(final Translation trans) {
127                    if (trans == null)
128                            return true;
129                    return isEmpty(trans.toString());
130            }
131    
132            /**
133             * A convenience method that checks if the {@link String} returned by from a
134             * {@link Translation} object contains a "valid" translation for the active
135             * language. A {@link String} containing only spaces or equals
136             * {@link Translation}.NO_TRANSLATION will return <code>false</code>.
137             *
138             * @param transString
139             *            {@link String} to check.
140             */
141            public static boolean isEmpty(final String transString) {
142                    if (transString == null)
143                            return true;
144                    if (transString.trim().isEmpty())
145                            return true;
146                    if (transString.equals(Translation.NO_TRANSLATION))
147                            return true;
148                    return false;
149            }
150    
151            /**
152             * @return a {@link Double} between 0 and 1 representing the part of the
153             *         given {@link Translation} that has been filled.
154             * @param ac
155             *            {@link AtlasConfig} to determine the languages to expect.
156             * @param trans
157             *            The {@link Translation} to check.
158             */
159            public static double qmTranslation(final List<String> languages,
160                            final Translation trans) {
161    
162                    if (trans == null)
163                            return 0.;
164    
165                    Integer cunt = 0;
166                    for (final String l : languages) {
167                            final String t = trans.get(l);
168                            if (!isEmpty(t))
169                                    cunt++;
170                    }
171                    return cunt.doubleValue() / (double) languages.size();
172            }
173    
174            /**
175             * The German Umlaute have standard ASCII alternatives that are sometimes
176             * use. This method will replace any possible ASCII-Umlaut Representation
177             * into real Umlaute. E.g. "ae" to "ä" and "ue" to "ü". Umlaute are returned as inline-UTF8.
178             */
179            public static String mitUmlaute(String withoutUmlaute) {
180                    String replaced = withoutUmlaute;
181                    
182                    replaced = replaced.replaceAll("ue", "\u00FC");
183                    replaced = replaced.replaceAll("Ue", "\u00DC");
184                    
185                    replaced = replaced.replaceAll("oe", "\u00F6");
186                    replaced = replaced.replaceAll("Oe", "\u00D6");
187                    
188                    replaced = replaced.replaceAll("ae", "\u00E4");
189                    replaced = replaced.replaceAll("Ae", "\u00C4");
190                    // TODO mehr
191                    // TODO besser UTF \u123321 schreibweise
192                    return replaced;
193            }
194    }
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