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package org.gvsig.i18n;
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import java.io.*;
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import java.util.*;
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import org.apache.log4j.Logger;
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/**
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* @author Generalitat Valenciana and Iver
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*
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*/
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public class Messages {
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//private static final String ENCODING="UTF-8";
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private static Logger logger = Logger.getLogger("Messages");
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private static Hashtable localeResources = new Hashtable(100, 2);; // contains the translations, indexed by key
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private static Properties _localeProperties = new Properties();
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private static Vector _preferredLocales; // contains the ordered list of prefered languages/locales (class Locale)
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private static Vector _availableLocales;
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/**
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* @param key
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* @return an String with the message associated with the provided key.
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* If the key is not in the dictionary, return the key.
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*
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* Gets the localized message associated with the provided key.
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* If the key is not in the dictionary, return the key and register
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* the failure in the log.
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*/
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public static String getText(String key) {
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String translation = (String) localeResources.get(key);
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if (translation!=null)
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return translation;
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logger.warn("");
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return key;
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}
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/**
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* @param key
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* @return an String with the message associated with the provided key,
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* or null if the key is not in the dictionary.
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* If the key is not found, the failure IS NOT registered in the log.
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*
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* Gets the localized message associated with the provided key.
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* Returns null if the key is not in the dictionary.
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*/
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public static String getTextNoLog(String key) {
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return (String) localeResources.get(key);
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}
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/**
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* Adds an additional family of resource files containing some translations.
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* A family is a group of files with a common baseName.
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* The file must be an UTF-8 encoded file, with the format:
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* key1=value1
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* key2=value2
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* where 'key1' is the key used to identify the string and must not
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* contain the '=' symbol, and 'value1' is the associated translation.
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* For example:
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* cancel=Cancelar
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* accept=Aceptar
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* Only one pair key-value is allowed per line.
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*
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* @param basedir The directory in which the properties file is stored
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* @param family The family name (or base name) which is used to search
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* actual properties files.
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*/
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public static void addResourceFamily(String basedir, String family) {
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FileInputStream inputStream=null;
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BufferedReader reader=null;
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//String line;
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String fileName="";
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String currentKey;
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Enumeration properties;
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Enumeration languages = _preferredLocales.elements();
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Locale lang;
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//String[] entry;
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while (languages.hasMoreElements()) { // for each language
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lang = (Locale) languages.nextElement();
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// get all the possible langcode candidates
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Enumeration langcodes = getLangcodeList(lang);
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while (inputStream==null && (langcodes.hasMoreElements() || lang.getLanguage().equals("es"))) {
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if (langcodes.hasMoreElements())
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fileName = basedir+File.separator+family+"_"+(String)langcodes.nextElement()+".properties";
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else // we need this for Spanish, as it is the default language for the moment
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fileName = basedir+File.separator+family+".properties";
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try {
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inputStream = new FileInputStream(fileName);
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}
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catch (FileNotFoundException fnfex) {
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/* No harm if the file was not found. We don't know which files are present in advance.
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* We just keep trying to open a valid file for this locale.
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* First we tried to open "lang_country_variant", now "lang_contry"
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* and finally we'll try just "lang" and "".
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*/
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}
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}
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if (inputStream!=null) {
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/* If we got a valid inputStream, we read it. Otherwise, we'll continue with the
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* next language
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*/
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try {
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/** Tendremos que usar el objeto properties mientras nuestras traducciones
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* est?n codificadas usando Unicape escaped sequences (ya que no hay forma sencilla
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* de cargar estos ficheros correctamente si no es usando esta clase) **/
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_localeProperties.load(inputStream);
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properties = _localeProperties.propertyNames();
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while (properties.hasMoreElements()) {
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currentKey = (String) properties.nextElement();
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if (!localeResources.containsKey(currentKey)) {
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localeResources.put(currentKey, _localeProperties.getProperty(currentKey));
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}
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}
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inputStream.close();
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}
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catch (IOException iox){
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// if there was some error while reading, log it and close the stream
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logger.error(Messages.getText("Messages -- error.intentado.leer:"+fileName));
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try {
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inputStream.close();
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}
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catch (IOException iox2) {}
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}
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/*reader = new BufferedReader(new InputStreamReader(inputStream, ENCODING));
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// each line from the file is added to the Hashtable
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for (line=reader.readLine(); line!=null; line=reader.readLine()) {
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// the line contains a pair "key=value"
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entry = line.split("=", 2);
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if (entry.length == 2) {
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// if the key is already present, we don't overwrite its contents
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if (!localeResources.containsKey(entry[0])) {
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localeResources.put(entry[0], entry[1]);
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}
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}
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else {
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logger.warn(Messages.getText("error.de.sintaxis.en.archivo:"+fileName));
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}
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}
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reader.close();
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*/
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/* }
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catch (UnsupportedEncodingException ueex) {
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logger.error(Messages.getText("codificacion.caracteres.no.permitida"));
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try {
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inputStream.close();
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}
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catch (IOException ex) {}
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}
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catch (IOException ioex) {
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logger.error(Messages.getText("codificacion.caracteres.no.permitida"));
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try {
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reader.close();
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} catch (IOException ex) {}
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}*/
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}
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}
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}
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/**
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* Returns a vector containing the ordered list of prefered Locales
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* Each element of the vector is a Locale object.
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*
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* @return a vector containing the ordered list of prefered Locales
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* Each element of the vector is a Locale object.
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*/
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public static Vector getPreferredLocales() {
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return _preferredLocales;
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}
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/**
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* Set the ordered list of preferred locales.
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* Each element of the vector is a Locale object.
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*
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* @param preferredLocales a vector containing Locale objects.
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* The Vector represents an ordered list of preferred locales
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*/
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public static void setPreferredLocales(Vector preferredLocales) {
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_preferredLocales = preferredLocales;
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}
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/**
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* Searches the subdirectories of the provided directory, finding
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* all the translation files, and constructing a list of available translations.
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* It reports different country codes or variants, if available.
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* For example, if there is an en_US translation and an en_GB translation, both
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* locales will be present in the Vector.
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*
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* @return
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*/
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/**
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*
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* @return A Vector containing the available locales. Each element is a Locale object
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*/
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public static Vector getAvailableLocales() {
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return _availableLocales;
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}
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/**
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*
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* @return A Vector containing the available languages. Each element is an String object
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*/
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public static Vector getAvailableLanguages() {
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Vector availableLanguages = new Vector();
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Locale lang;
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Enumeration locales = _availableLocales.elements();
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while (locales.hasMoreElements()) {
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lang = (Locale) locales.nextElement();
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availableLanguages.add(lang.getLanguage());
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}
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return availableLanguages;
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}
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public static Hashtable getLocaleResources() {
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return localeResources;
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}
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/**
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* This method returns all the possible valid localecodes for a given
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* Locale object, starting with the most specifical localecode candidat.
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* For example, given a Locale object containing "es_ES_linux_cs",
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* it would return an Enumeration containing: {"es_ES_linux_cs", "es_ES", "es"}
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*
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* @param localecode
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* @return Enumeration of String objects, containing all the possible locales for
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* a given localocode
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*/
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private static Enumeration getLangcodeList(Locale localecode) {
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Vector list = new Vector();
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if (!localecode.getVariant().equals("")) {
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list.add(localecode.toString());
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}
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if (!localecode.getCountry().equals("")) {
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list.add(localecode.getLanguage()+"_"+localecode.getCountry());
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}
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if (!localecode.getLanguage().equals("")) {
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list.add(localecode.getLanguage());
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}
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return list.elements();
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}
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/**
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* File filter that includes the files starting with "text_" and ending with ".gvslocales"
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*/
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/*private class LocaleFileFilter implements FileFilter {
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public boolean accept(File pathname) {
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if (!pathname.getName().startsWith("text_"))
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return false;
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if (!pathname.getName().endsWith(".gvslocales"))
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return false;
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return true;
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}
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}*/
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/* public static Vector checkAvailableLocales(File directory) {
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Vector availableLocales = new Vector();
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if (directory.isDirectory()) {
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int contador;
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File[] localeFiles;
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File currentFile;
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String[] nameParts;
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String lang;
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// get files containing translations
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localeFiles = directory.listFiles(new LocaleFileFilter());
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for (contador=0; contador<localeFiles.length; contador++) {
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lang = null;
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currentFile = localeFiles[contador];
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// get the language code of the file
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nameParts = currentFile.getName().split("_");
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if (nameParts.length >= 2) {
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// ie. "text_es.gvslocales", "text_es_ES.gvslocales", "text_es_ES_linux-cs.gvslocales"
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nameParts = nameParts[1].split("\\.");
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if (nameParts.length == 2) {
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lang=nameParts[1];
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}
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}
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else if (nameParts.length > 2){
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//ie. "text_es_ES.gvslocales", "text_es_ES_linux_cs.gvslocales"
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lang=nameParts[1];
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}
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if (lang!=null) {
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availableLocales.add(lang);
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}
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}
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}
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else {
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logger.warn(Messages.getText("provided.name.is.not.directory"));
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}
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_availableLocales = availableLocales;
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return availableLocales;
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}*/
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/**
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* @param fileName
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*
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* Adds an additional resource file containing some translations.
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* The file must be an UTF-8 encoded file, with the format:
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* key1=value1
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* key2=value2
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* where 'key1' is the key used to identify the string and must not
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* contain the '=' symbol, and 'value1' is the associated translation.
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* For example:
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* cancel=Cancelar
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* accept=Aceptar
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* Only one pair key-value is allowed per line.
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*
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*/
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/*public static void addLocalizedFile(String baseName, Locale localeCode) {
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FileInputStream inputStream;
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BufferedReader reader=null;
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String line;
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Hashtable localizedResource;
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String[] entry;
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if (localeResources.containsKey(localeCode)) {
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localizedResource = (Hashtable) localeResources.get(localeCode);
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}
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else {
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// si todav?a no existe una Hashtable para este langcode, la creamos
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localizedResource = new Hashtable(100, 2);
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localeResources.put(localeCode, localizedResource);
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}
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try {
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inputStream = new FileInputStream(baseName+"_"+localeCode+".properties");
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try {
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reader = new BufferedReader(new InputStreamReader(inputStream, ENCODING));
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}
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catch (UnsupportedEncodingException uee) {
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}
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// each line from the file is added to the Hashtable
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try {
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for (line=reader.readLine(); line!=null; line=reader.readLine()) {
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// the line contains a pair "key=value"
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entry = line.split("=");
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if (entry.length == 2) {
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// if the key is already present, we don't overwrite its contents
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if (!localizedResource.containsKey(entry[0])) {
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localizedResource.put(entry[0], entry[1]);
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}
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}
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else {
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// FIXME!! decidir qu? hacer exactamente en caso de error (y por supuesto, localizar el mensaje de error usando esta clase!!!)
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//throw new org.omg.CORBA.UnknownUserException();
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}
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}
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reader.close();
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}
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catch (IOException ioex) {
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}
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}
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catch (FileNotFoundException ex) {
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System.err.println("error");
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}
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}*/
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}
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