| 1 | package be.nikiroo.jvcard.resources; |
| 2 | |
| 3 | import java.io.BufferedWriter; |
| 4 | import java.io.File; |
| 5 | import java.io.FileOutputStream; |
| 6 | import java.io.IOException; |
| 7 | import java.io.OutputStreamWriter; |
| 8 | import java.lang.reflect.Field; |
| 9 | import java.util.Locale; |
| 10 | import java.util.ResourceBundle; |
| 11 | |
| 12 | /** |
| 13 | * This class manages the translation of {@link Trans.StringId}s into |
| 14 | * user-understandable text. |
| 15 | * |
| 16 | * @author niki |
| 17 | * |
| 18 | */ |
| 19 | public class Trans { |
| 20 | private ResourceBundle map; |
| 21 | private boolean utf = true; |
| 22 | |
| 23 | /** |
| 24 | * Create a translation service with the default language. |
| 25 | */ |
| 26 | public Trans() { |
| 27 | setLanguage(null); |
| 28 | } |
| 29 | |
| 30 | /** |
| 31 | * Create a translation service for the given language. (Will fall back to |
| 32 | * the default one i not found.) |
| 33 | * |
| 34 | * @param language |
| 35 | * the language to use |
| 36 | */ |
| 37 | public Trans(String language) { |
| 38 | setLanguage(language); |
| 39 | } |
| 40 | |
| 41 | /** |
| 42 | * Translate the given {@link StringId} into user text. |
| 43 | * |
| 44 | * @param stringId |
| 45 | * the ID to translate |
| 46 | * |
| 47 | * @return the translated text |
| 48 | */ |
| 49 | public String trans(StringId stringId) { |
| 50 | StringId id = stringId; |
| 51 | if (!isUnicode()) { |
| 52 | try { |
| 53 | id = StringId.valueOf(stringId.name() + "_NOUTF"); |
| 54 | } catch (IllegalArgumentException iae) { |
| 55 | // no special _NOUTF version found |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | if (id == StringId.NULL) { |
| 60 | return ""; |
| 61 | } |
| 62 | |
| 63 | if (id == StringId.DUMMY) { |
| 64 | return "[dummy]"; |
| 65 | } |
| 66 | |
| 67 | if (map.containsKey(id.name())) { |
| 68 | return map.getString(id.name()); |
| 69 | } |
| 70 | |
| 71 | return id.toString(); |
| 72 | } |
| 73 | |
| 74 | /** |
| 75 | * Check if unicode characters should be used. |
| 76 | * |
| 77 | * @return TRUE to allow unicode |
| 78 | */ |
| 79 | public boolean isUnicode() { |
| 80 | return utf; |
| 81 | } |
| 82 | |
| 83 | /** |
| 84 | * Allow or disallow unicode characters in the program. |
| 85 | * |
| 86 | * @param utf |
| 87 | * TRUE to allow unuciode, FALSE to only allow ASCII characters |
| 88 | */ |
| 89 | public void setUnicode(boolean utf) { |
| 90 | this.utf = utf; |
| 91 | } |
| 92 | |
| 93 | /** |
| 94 | * Initialise the translation mappings for the given language. |
| 95 | * |
| 96 | * @param language |
| 97 | * the language to initialise, in the form "en-GB" or "fr" for |
| 98 | * instance |
| 99 | */ |
| 100 | private void setLanguage(String language) { |
| 101 | map = Bundles.getBundle("resources", getLocaleFor(language)); |
| 102 | } |
| 103 | |
| 104 | /** |
| 105 | * Create/update the translation .properties files. Will use the most likely |
| 106 | * candidate as base if the file does not already exists (for instance, |
| 107 | * "en_US" will use "en" as a base). |
| 108 | * |
| 109 | * @param path |
| 110 | * the path where the .properties files are |
| 111 | * |
| 112 | * @param language |
| 113 | * the language code to create/update (e.g.: <tt>fr-BE</tt>) |
| 114 | * |
| 115 | * @throws IOException |
| 116 | * in case of IO errors |
| 117 | */ |
| 118 | static public void generateTranslationFile(String path, String language) |
| 119 | throws IOException { |
| 120 | |
| 121 | Locale locale = getLocaleFor(language); |
| 122 | String code = locale.toString(); |
| 123 | Trans trans = new Trans(code); |
| 124 | |
| 125 | File file = null; |
| 126 | if (code.length() > 0) { |
| 127 | file = new File(path + "resources_" + code + ".properties"); |
| 128 | } else { |
| 129 | // Default properties file: |
| 130 | file = new File(path + "resources.properties"); |
| 131 | } |
| 132 | |
| 133 | BufferedWriter writer = new BufferedWriter(new OutputStreamWriter( |
| 134 | new FileOutputStream(file), "UTF-8")); |
| 135 | |
| 136 | String name = locale.getDisplayCountry(locale); |
| 137 | if (name.length() == 0) |
| 138 | name = locale.getDisplayLanguage(locale); |
| 139 | if (name.length() == 0) |
| 140 | name = "default"; |
| 141 | |
| 142 | if (code.length() > 0) { |
| 143 | name = name + " (" + code + ")"; |
| 144 | } |
| 145 | |
| 146 | writer.append("# " + name + " translation file (UTF-8)\n"); |
| 147 | writer.append("# \n"); |
| 148 | writer.append("# Note that any key can be doubled with a _NOUTF suffix\n"); |
| 149 | writer.append("# to use when the flag --noutf is passed\n"); |
| 150 | writer.append("# \n"); |
| 151 | writer.append("# Also, the comments always refer to the key below them.\n"); |
| 152 | writer.append("# \n"); |
| 153 | writer.append("\n"); |
| 154 | |
| 155 | for (Field field : StringId.class.getDeclaredFields()) { |
| 156 | Meta meta = field.getAnnotation(Meta.class); |
| 157 | if (meta != null) { |
| 158 | StringId id = StringId.valueOf(field.getName()); |
| 159 | String info = getMetaInfo(meta); |
| 160 | if (info != null) { |
| 161 | writer.append(info); |
| 162 | writer.append("\n"); |
| 163 | } |
| 164 | |
| 165 | writer.append(id.name()); |
| 166 | writer.append(" = "); |
| 167 | if (!trans.trans(id).equals(id.name())) |
| 168 | writer.append(trans.trans(id)); |
| 169 | writer.append("\n"); |
| 170 | } |
| 171 | } |
| 172 | |
| 173 | writer.close(); |
| 174 | } |
| 175 | |
| 176 | /** |
| 177 | * Return the {@link Locale} representing the given language. |
| 178 | * |
| 179 | * @param language |
| 180 | * the language to initialise, in the form "en-GB" or "fr" for |
| 181 | * instance |
| 182 | * |
| 183 | * @return the corresponding {@link Locale} or the default {@link Locale} if |
| 184 | * it is not known |
| 185 | */ |
| 186 | static private Locale getLocaleFor(String language) { |
| 187 | Locale locale; |
| 188 | |
| 189 | if (language == null) { |
| 190 | locale = Locale.getDefault(); |
| 191 | } else { |
| 192 | language = language.replaceAll("_", "-"); |
| 193 | String lang = language; |
| 194 | String country = null; |
| 195 | if (language.contains("-")) { |
| 196 | lang = language.split("-")[0]; |
| 197 | country = language.split("-")[1]; |
| 198 | } |
| 199 | |
| 200 | if (country != null) |
| 201 | locale = new Locale(lang, country); |
| 202 | else |
| 203 | locale = new Locale(lang); |
| 204 | } |
| 205 | |
| 206 | return locale; |
| 207 | } |
| 208 | |
| 209 | /** |
| 210 | * Return formated, display-able information from the {@link Meta} field |
| 211 | * given. Each line will always starts with a "#" character. |
| 212 | * |
| 213 | * @param meta |
| 214 | * the {@link Meta} field |
| 215 | * |
| 216 | * @return the information to display or NULL if none |
| 217 | */ |
| 218 | static private String getMetaInfo(Meta meta) { |
| 219 | String what = meta.what(); |
| 220 | String where = meta.where(); |
| 221 | String format = meta.format(); |
| 222 | String info = meta.info(); |
| 223 | |
| 224 | int opt = what.length() + where.length() + format.length(); |
| 225 | if (opt + info.length() == 0) |
| 226 | return null; |
| 227 | |
| 228 | StringBuilder builder = new StringBuilder(); |
| 229 | builder.append("# "); |
| 230 | |
| 231 | if (opt > 0) { |
| 232 | builder.append("("); |
| 233 | if (what.length() > 0) { |
| 234 | builder.append("WHAT: " + what); |
| 235 | if (where.length() + format.length() > 0) |
| 236 | builder.append(", "); |
| 237 | } |
| 238 | |
| 239 | if (where.length() > 0) { |
| 240 | builder.append("WHERE: " + where); |
| 241 | if (format.length() > 0) |
| 242 | builder.append(", "); |
| 243 | } |
| 244 | |
| 245 | if (format.length() > 0) { |
| 246 | builder.append("FORMAT: " + format); |
| 247 | } |
| 248 | |
| 249 | builder.append(")\n# "); |
| 250 | } |
| 251 | |
| 252 | builder.append(info); |
| 253 | |
| 254 | return builder.toString(); |
| 255 | } |
| 256 | |
| 257 | /** |
| 258 | * The enum representing textual information to be translated to the user as |
| 259 | * a key. |
| 260 | * |
| 261 | * Note that each key that should be translated MUST be annotated with a |
| 262 | * {@link Meta} annotation. |
| 263 | * |
| 264 | * @author niki |
| 265 | * |
| 266 | */ |
| 267 | public enum StringId { |
| 268 | DUMMY, // <-- TODO : remove |
| 269 | NULL, // Special usage, no annotations so it is not visible in |
| 270 | // .properties files |
| 271 | @Meta(what = "a key to press", where = "action keys", format = "MUST BE 3 chars long", info = "Tab key") |
| 272 | KEY_TAB, // keys |
| 273 | @Meta(what = "a key to press", where = "action keys", format = "MUST BE 3 chars long", info = "Enter key") |
| 274 | KEY_ENTER, // |
| 275 | @Meta(what = "", where = "", format = "", info = "") |
| 276 | KEY_ACTION_BACK, // MainWindow |
| 277 | @Meta(what = "", where = "", format = "", info = "") |
| 278 | KEY_ACTION_HELP, // |
| 279 | @Meta(what = "", where = "", format = "", info = "") |
| 280 | KEY_ACTION_VIEW_CARD, // FileList |
| 281 | @Meta(what = "", where = "", format = "", info = "") |
| 282 | KEY_ACTION_VIEW_CONTACT, // ContactList |
| 283 | @Meta(what = "", where = "", format = "", info = "") |
| 284 | KEY_ACTION_EDIT_CONTACT, // |
| 285 | @Meta(what = "", where = "", format = "", info = "") |
| 286 | KEY_ACTION_SAVE_CARD, // |
| 287 | @Meta(what = "", where = "", format = "", info = "") |
| 288 | KEY_ACTION_DELETE_CONTACT, // |
| 289 | @Meta(what = "", where = "", format = "", info = "") |
| 290 | KEY_ACTION_SEARCH, // |
| 291 | @Meta(what = "", where = "", format = "", info = "we could use: ' ', ┃, │...") |
| 292 | DEAULT_FIELD_SEPARATOR, // MainContentList |
| 293 | @Meta(what = "", where = "", format = "", info = "") |
| 294 | DEAULT_FIELD_SEPARATOR_NOUTF, // |
| 295 | @Meta(what = "", where = "", format = "", info = "") |
| 296 | KEY_ACTION_INVERT, // ContactDetails |
| 297 | @Meta(what = "", where = "", format = "", info = "") |
| 298 | KEY_ACTION_FULLSCREEN, // |
| 299 | @Meta(what = "", where = "", format = "", info = "") |
| 300 | KEY_ACTION_SWITCH_FORMAT, // multi-usage |
| 301 | }; |
| 302 | } |