| 1 | package be.nikiroo.jvcard.resources.bundles; |
| 2 | |
| 3 | import java.io.File; |
| 4 | import java.io.IOException; |
| 5 | import java.io.Writer; |
| 6 | import java.util.LinkedList; |
| 7 | import java.util.List; |
| 8 | import java.util.Locale; |
| 9 | import java.util.regex.Pattern; |
| 10 | |
| 11 | import be.nikiroo.jvcard.resources.Bundles; |
| 12 | import be.nikiroo.jvcard.resources.Bundles.Bundle; |
| 13 | import be.nikiroo.jvcard.resources.Bundles.Target; |
| 14 | import be.nikiroo.jvcard.resources.ResourceList; |
| 15 | import be.nikiroo.jvcard.resources.enums.StringId; |
| 16 | |
| 17 | /** |
| 18 | * This class manages the translation of {@link TransBundle.StringId}s into |
| 19 | * user-understandable text. |
| 20 | * |
| 21 | * @author niki |
| 22 | * |
| 23 | */ |
| 24 | public class TransBundle extends Bundle<StringId> { |
| 25 | private boolean utf = true; |
| 26 | private Locale locale; |
| 27 | private boolean defaultLocale = false; |
| 28 | |
| 29 | /** |
| 30 | * Create a translation service with the default language. |
| 31 | */ |
| 32 | public TransBundle() { |
| 33 | new Bundles().super(StringId.class, Target.resources); |
| 34 | setLanguage(null); |
| 35 | } |
| 36 | |
| 37 | /** |
| 38 | * Create a translation service for the given language. (Will fall back to |
| 39 | * the default one i not found.) |
| 40 | * |
| 41 | * @param language |
| 42 | * the language to use |
| 43 | */ |
| 44 | public TransBundle(String language) { |
| 45 | new Bundles().super(StringId.class, Target.resources); |
| 46 | |
| 47 | setLanguage(language); |
| 48 | } |
| 49 | |
| 50 | /** |
| 51 | * Translate the given {@link StringId} into user text. |
| 52 | * |
| 53 | * @param stringId |
| 54 | * the ID to translate |
| 55 | * @param values |
| 56 | * the values to insert instead of the place holders in the |
| 57 | * translation |
| 58 | * |
| 59 | * @return the translated text with the given value where required |
| 60 | */ |
| 61 | public String getString(StringId stringId, Object... values) { |
| 62 | StringId id = stringId; |
| 63 | String result = ""; |
| 64 | |
| 65 | if (!isUnicode()) { |
| 66 | try { |
| 67 | id = StringId.valueOf(stringId.name() + "_NOUTF"); |
| 68 | } catch (IllegalArgumentException iae) { |
| 69 | // no special _NOUTF version found |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | if (id == StringId.NULL) { |
| 74 | result = ""; |
| 75 | } else if (id == StringId.DUMMY) { |
| 76 | result = "[dummy]"; |
| 77 | } else if (map.containsKey(id.name())) { |
| 78 | result = map.getString(id.name()); |
| 79 | } else { |
| 80 | result = id.toString(); |
| 81 | } |
| 82 | |
| 83 | if (values != null && values.length > 0) |
| 84 | return String.format(locale, result, values); |
| 85 | else |
| 86 | return result; |
| 87 | } |
| 88 | |
| 89 | /** |
| 90 | * Check if unicode characters should be used. |
| 91 | * |
| 92 | * @return TRUE to allow unicode |
| 93 | */ |
| 94 | public boolean isUnicode() { |
| 95 | return utf; |
| 96 | } |
| 97 | |
| 98 | /** |
| 99 | * Allow or disallow unicode characters in the program. |
| 100 | * |
| 101 | * @param utf |
| 102 | * TRUE to allow unuciode, FALSE to only allow ASCII characters |
| 103 | */ |
| 104 | public void setUnicode(boolean utf) { |
| 105 | this.utf = utf; |
| 106 | } |
| 107 | |
| 108 | /** |
| 109 | * Initialise the translation mappings for the given language. |
| 110 | * |
| 111 | * @param language |
| 112 | * the language to initialise, in the form "en-GB" or "fr" for |
| 113 | * instance |
| 114 | */ |
| 115 | private void setLanguage(String language) { |
| 116 | defaultLocale = (language == null || language.length() == 0); |
| 117 | locale = getLocaleFor(language); |
| 118 | map = getBundle(Target.resources, locale); |
| 119 | } |
| 120 | |
| 121 | @Override |
| 122 | public String getString(StringId id) { |
| 123 | return getString(id, (Object[]) null); |
| 124 | } |
| 125 | |
| 126 | @Override |
| 127 | protected File getUpdateFile(String path) { |
| 128 | String code = locale.toString(); |
| 129 | File file = null; |
| 130 | if (!defaultLocale && code.length() > 0) { |
| 131 | file = new File(path, name.name() + "_" + code + ".properties"); |
| 132 | } else { |
| 133 | // Default properties file: |
| 134 | file = new File(path, name.name() + ".properties"); |
| 135 | } |
| 136 | |
| 137 | return file; |
| 138 | } |
| 139 | |
| 140 | @Override |
| 141 | protected void writeHeader(Writer writer) throws IOException { |
| 142 | String code = locale.toString(); |
| 143 | String name = locale.getDisplayCountry(locale); |
| 144 | |
| 145 | if (name.length() == 0) |
| 146 | name = locale.getDisplayLanguage(locale); |
| 147 | if (name.length() == 0) |
| 148 | name = "default"; |
| 149 | |
| 150 | if (code.length() > 0) { |
| 151 | name = name + " (" + code + ")"; |
| 152 | } |
| 153 | |
| 154 | StringId.writeHeader(writer, name); |
| 155 | } |
| 156 | |
| 157 | @Override |
| 158 | protected void writeValue(Writer writer, StringId id) throws IOException { |
| 159 | super.writeValue(writer, id); |
| 160 | |
| 161 | String name = id.name() + "_NOUTF"; |
| 162 | if (map.containsKey(name)) { |
| 163 | String value = map.getString(name).trim(); |
| 164 | writeValue(writer, name, value); |
| 165 | } |
| 166 | } |
| 167 | |
| 168 | /** |
| 169 | * Return the {@link Locale} representing the given language. |
| 170 | * |
| 171 | * @param language |
| 172 | * the language to initialise, in the form "en-GB" or "fr" for |
| 173 | * instance |
| 174 | * |
| 175 | * @return the corresponding {@link Locale} or the default {@link Locale} if |
| 176 | * it is not known |
| 177 | */ |
| 178 | static private Locale getLocaleFor(String language) { |
| 179 | Locale locale; |
| 180 | |
| 181 | if (language == null) { |
| 182 | locale = Locale.getDefault(); |
| 183 | } else { |
| 184 | language = language.replaceAll("_", "-"); |
| 185 | String lang = language; |
| 186 | String country = null; |
| 187 | if (language.contains("-")) { |
| 188 | lang = language.split("-")[0]; |
| 189 | country = language.split("-")[1]; |
| 190 | } |
| 191 | |
| 192 | if (country != null) |
| 193 | locale = new Locale(lang, country); |
| 194 | else |
| 195 | locale = new Locale(lang); |
| 196 | } |
| 197 | |
| 198 | return locale; |
| 199 | } |
| 200 | |
| 201 | /** |
| 202 | * Return all the languages known by the program. |
| 203 | * |
| 204 | * @return the known language codes |
| 205 | */ |
| 206 | static public List<String> getKnownLanguages() { |
| 207 | List<String> resources = new LinkedList<String>(); |
| 208 | |
| 209 | String regex = ".*" + Target.resources.name() |
| 210 | + "[_a-zA-Za]*\\.properties$"; |
| 211 | |
| 212 | for (String res : ResourceList.getResources(Pattern.compile(regex))) { |
| 213 | String resource = res; |
| 214 | int index = resource.lastIndexOf('/'); |
| 215 | if (index >= 0 && index < (resource.length() - 1)) |
| 216 | resource = resource.substring(index + 1); |
| 217 | if (resource.startsWith(Target.resources.name())) { |
| 218 | resource = resource.substring(0, resource.length() |
| 219 | - ".properties".length()); |
| 220 | resource = resource.substring(Target.resources.name().length()); |
| 221 | if (resource.startsWith("_")) { |
| 222 | resource = resource.substring(1); |
| 223 | resources.add(resource); |
| 224 | } |
| 225 | } |
| 226 | } |
| 227 | |
| 228 | return resources; |
| 229 | } |
| 230 | } |