| 1 | package be.nikiroo.utils.resources; |
| 2 | |
| 3 | import java.io.BufferedWriter; |
| 4 | import java.io.File; |
| 5 | import java.io.FileInputStream; |
| 6 | import java.io.FileOutputStream; |
| 7 | import java.io.IOException; |
| 8 | import java.io.InputStreamReader; |
| 9 | import java.io.OutputStreamWriter; |
| 10 | import java.io.Reader; |
| 11 | import java.io.Writer; |
| 12 | import java.lang.reflect.Field; |
| 13 | import java.util.ArrayList; |
| 14 | import java.util.HashMap; |
| 15 | import java.util.List; |
| 16 | import java.util.Locale; |
| 17 | import java.util.Map; |
| 18 | import java.util.MissingResourceException; |
| 19 | import java.util.PropertyResourceBundle; |
| 20 | import java.util.ResourceBundle; |
| 21 | |
| 22 | import be.nikiroo.utils.resources.Meta.Format; |
| 23 | |
| 24 | /** |
| 25 | * This class encapsulate a {@link ResourceBundle} in UTF-8. It allows to |
| 26 | * retrieve values associated to an enumeration, and allows some additional |
| 27 | * methods. |
| 28 | * <p> |
| 29 | * It also sports a writable change map, and you can save back the |
| 30 | * {@link Bundle} to file with {@link Bundle#updateFile(String)}. |
| 31 | * |
| 32 | * @param <E> |
| 33 | * the enum to use to get values out of this class |
| 34 | * |
| 35 | * @author niki |
| 36 | */ |
| 37 | |
| 38 | public class Bundle<E extends Enum<E>> { |
| 39 | /** The type of E. */ |
| 40 | protected Class<E> type; |
| 41 | /** |
| 42 | * The {@link Enum} associated to this {@link Bundle} (all the keys used in |
| 43 | * this {@link Bundle} will be of this type). |
| 44 | */ |
| 45 | protected Enum<?> keyType; |
| 46 | |
| 47 | private TransBundle<E> descriptionBundle; |
| 48 | |
| 49 | /** R/O map */ |
| 50 | private Map<String, String> map; |
| 51 | /** R/W map */ |
| 52 | private Map<String, String> changeMap; |
| 53 | |
| 54 | /** |
| 55 | * Create a new {@link Bundles} of the given name. |
| 56 | * |
| 57 | * @param type |
| 58 | * a runtime instance of the class of E |
| 59 | * @param name |
| 60 | * the name of the {@link Bundles} |
| 61 | * @param descriptionBundle |
| 62 | * the description {@link TransBundle}, that is, a |
| 63 | * {@link TransBundle} dedicated to the description of the values |
| 64 | * of the given {@link Bundle} (can be NULL) |
| 65 | */ |
| 66 | protected Bundle(Class<E> type, Enum<?> name, |
| 67 | TransBundle<E> descriptionBundle) { |
| 68 | this.type = type; |
| 69 | this.keyType = name; |
| 70 | this.descriptionBundle = descriptionBundle; |
| 71 | |
| 72 | this.map = new HashMap<String, String>(); |
| 73 | this.changeMap = new HashMap<String, String>(); |
| 74 | setBundle(name, Locale.getDefault(), false); |
| 75 | } |
| 76 | |
| 77 | /** |
| 78 | * Check if the setting is set into this {@link Bundle}. |
| 79 | * |
| 80 | * @param id |
| 81 | * the id of the setting to check |
| 82 | * @param includeDefaultValue |
| 83 | * TRUE to only return false when the setting is not set AND |
| 84 | * there is no default value |
| 85 | * |
| 86 | * @return TRUE if the setting is set |
| 87 | */ |
| 88 | public boolean isSet(E id, boolean includeDefaultValue) { |
| 89 | return isSet(id.name(), includeDefaultValue); |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * Check if the setting is set into this {@link Bundle}. |
| 94 | * |
| 95 | * @param id |
| 96 | * the id of the setting to check |
| 97 | * @param includeDefaultValue |
| 98 | * TRUE to only return false when the setting is not set AND |
| 99 | * there is no default value |
| 100 | * |
| 101 | * @return TRUE if the setting is set |
| 102 | */ |
| 103 | protected boolean isSet(String name, boolean includeDefaultValue) { |
| 104 | if (getString(name, null) == null) { |
| 105 | if (!includeDefaultValue || getString(name, "") == null) { |
| 106 | return false; |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | return true; |
| 111 | } |
| 112 | |
| 113 | /** |
| 114 | * Return the value associated to the given id as a {@link String}. |
| 115 | * |
| 116 | * @param id |
| 117 | * the id of the value to get |
| 118 | * |
| 119 | * @return the associated value, or NULL if not found (not present in the |
| 120 | * resource file) |
| 121 | */ |
| 122 | public String getString(E id) { |
| 123 | return getString(id, null); |
| 124 | } |
| 125 | |
| 126 | /** |
| 127 | * Return the value associated to the given id as a {@link String}. |
| 128 | * <p> |
| 129 | * If no value is associated, take the default one if any. |
| 130 | * |
| 131 | * @param id |
| 132 | * the id of the value to get |
| 133 | * @param def |
| 134 | * the default value when it is not present in the config file |
| 135 | * |
| 136 | * @return the associated value, or NULL if not found (not present in the |
| 137 | * resource file) |
| 138 | */ |
| 139 | public String getString(E id, String def) { |
| 140 | String rep = getString(id.name(), null); |
| 141 | if (rep == null) { |
| 142 | try { |
| 143 | Meta meta = type.getDeclaredField(id.name()).getAnnotation( |
| 144 | Meta.class); |
| 145 | rep = meta.def(); |
| 146 | } catch (NoSuchFieldException e) { |
| 147 | } catch (SecurityException e) { |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | if (rep == null) { |
| 152 | rep = def; |
| 153 | } |
| 154 | |
| 155 | return rep; |
| 156 | } |
| 157 | |
| 158 | /** |
| 159 | * Set the value associated to the given id as a {@link String}. |
| 160 | * |
| 161 | * @param id |
| 162 | * the id of the value to set |
| 163 | * @param value |
| 164 | * the value |
| 165 | * |
| 166 | */ |
| 167 | public void setString(E id, String value) { |
| 168 | setString(id.name(), value); |
| 169 | } |
| 170 | |
| 171 | /** |
| 172 | * Return the value associated to the given id as a {@link String} suffixed |
| 173 | * with the runtime value "_suffix" (that is, "_" and suffix). |
| 174 | * <p> |
| 175 | * Will only accept suffixes that form an existing id. |
| 176 | * <p> |
| 177 | * If no value is associated, take the default one if any. |
| 178 | * |
| 179 | * @param id |
| 180 | * the id of the value to get |
| 181 | * @param suffix |
| 182 | * the runtime suffix |
| 183 | * |
| 184 | * @return the associated value, or NULL if not found (not present in the |
| 185 | * resource file) |
| 186 | */ |
| 187 | public String getStringX(E id, String suffix) { |
| 188 | String key = id.name() |
| 189 | + (suffix == null ? "" : "_" + suffix.toUpperCase()); |
| 190 | |
| 191 | try { |
| 192 | id = Enum.valueOf(type, key); |
| 193 | return getString(id); |
| 194 | } catch (IllegalArgumentException e) { |
| 195 | |
| 196 | } |
| 197 | |
| 198 | return null; |
| 199 | } |
| 200 | |
| 201 | /** |
| 202 | * Set the value associated to the given id as a {@link String} suffixed |
| 203 | * with the runtime value "_suffix" (that is, "_" and suffix). |
| 204 | * <p> |
| 205 | * Will only accept suffixes that form an existing id. |
| 206 | * |
| 207 | * @param id |
| 208 | * the id of the value to set |
| 209 | * @param suffix |
| 210 | * the runtime suffix |
| 211 | * @param value |
| 212 | * the value |
| 213 | */ |
| 214 | public void setStringX(E id, String suffix, String value) { |
| 215 | String key = id.name() |
| 216 | + (suffix == null ? "" : "_" + suffix.toUpperCase()); |
| 217 | |
| 218 | try { |
| 219 | id = Enum.valueOf(type, key); |
| 220 | setString(id, value); |
| 221 | } catch (IllegalArgumentException e) { |
| 222 | |
| 223 | } |
| 224 | } |
| 225 | |
| 226 | /** |
| 227 | * Return the value associated to the given id as a {@link Boolean}. |
| 228 | * <p> |
| 229 | * If no value is associated, take the default one if any. |
| 230 | * |
| 231 | * @param id |
| 232 | * the id of the value to get |
| 233 | * |
| 234 | * @return the associated value |
| 235 | */ |
| 236 | public Boolean getBoolean(E id) { |
| 237 | String str = getString(id); |
| 238 | return BundleHelper.parseBoolean(str); |
| 239 | } |
| 240 | |
| 241 | /** |
| 242 | * Return the value associated to the given id as a {@link Boolean}. |
| 243 | * <p> |
| 244 | * If no value is associated, take the default one if any. |
| 245 | * |
| 246 | * @param id |
| 247 | * the id of the value to get |
| 248 | * @param def |
| 249 | * the default value when it is not present in the config file or |
| 250 | * if it is not a boolean value |
| 251 | * |
| 252 | * @return the associated value |
| 253 | */ |
| 254 | public boolean getBoolean(E id, boolean def) { |
| 255 | Boolean b = getBoolean(id); |
| 256 | if (b != null) |
| 257 | return b; |
| 258 | |
| 259 | return def; |
| 260 | } |
| 261 | |
| 262 | /** |
| 263 | * Set the value associated to the given id as a {@link Boolean}. |
| 264 | * |
| 265 | * @param id |
| 266 | * the id of the value to set |
| 267 | * @param value |
| 268 | * the value |
| 269 | * |
| 270 | */ |
| 271 | public void setBoolean(E id, boolean value) { |
| 272 | setString(id.name(), BundleHelper.fromBoolean(value)); |
| 273 | } |
| 274 | |
| 275 | /** |
| 276 | * Return the value associated to the given id as an {@link Integer}. |
| 277 | * <p> |
| 278 | * If no value is associated, take the default one if any. |
| 279 | * |
| 280 | * @param id |
| 281 | * the id of the value to get |
| 282 | * |
| 283 | * @return the associated value |
| 284 | */ |
| 285 | public Integer getInteger(E id) { |
| 286 | return BundleHelper.parseInteger(getString(id)); |
| 287 | } |
| 288 | |
| 289 | /** |
| 290 | * Return the value associated to the given id as an int. |
| 291 | * <p> |
| 292 | * If no value is associated, take the default one if any. |
| 293 | * |
| 294 | * @param id |
| 295 | * the id of the value to get |
| 296 | * @param def |
| 297 | * the default value when it is not present in the config file or |
| 298 | * if it is not a int value |
| 299 | * |
| 300 | * @return the associated value |
| 301 | */ |
| 302 | public int getInteger(E id, int def) { |
| 303 | Integer i = getInteger(id); |
| 304 | if (i != null) |
| 305 | return i; |
| 306 | |
| 307 | return def; |
| 308 | } |
| 309 | |
| 310 | /** |
| 311 | * Set the value associated to the given id as a {@link Integer}. |
| 312 | * |
| 313 | * @param id |
| 314 | * the id of the value to set |
| 315 | * @param value |
| 316 | * the value |
| 317 | * |
| 318 | */ |
| 319 | public void setInteger(E id, int value) { |
| 320 | setString(id.name(), BundleHelper.fromInteger(value)); |
| 321 | } |
| 322 | |
| 323 | /** |
| 324 | * Return the value associated to the given id as a {@link Character}. |
| 325 | * <p> |
| 326 | * If no value is associated, take the default one if any. |
| 327 | * |
| 328 | * @param id |
| 329 | * the id of the value to get |
| 330 | * |
| 331 | * @return the associated value |
| 332 | */ |
| 333 | public Character getCharacter(E id) { |
| 334 | return BundleHelper.parseCharacter(getString(id)); |
| 335 | } |
| 336 | |
| 337 | /** |
| 338 | * Return the value associated to the given id as a {@link Character}. |
| 339 | * <p> |
| 340 | * If no value is associated, take the default one if any. |
| 341 | * |
| 342 | * @param id |
| 343 | * the id of the value to get |
| 344 | * @param def |
| 345 | * the default value when it is not present in the config file or |
| 346 | * if it is not a char value |
| 347 | * |
| 348 | * @return the associated value |
| 349 | */ |
| 350 | public char getCharacter(E id, char def) { |
| 351 | Character car = getCharacter(id); |
| 352 | if (car != null) |
| 353 | return car; |
| 354 | |
| 355 | return def; |
| 356 | } |
| 357 | |
| 358 | /** |
| 359 | * Return the value associated to the given id as a colour if it is found |
| 360 | * and can be parsed. |
| 361 | * <p> |
| 362 | * The returned value is an ARGB value. |
| 363 | * <p> |
| 364 | * If no value is associated, take the default one if any. |
| 365 | * |
| 366 | * @param id |
| 367 | * the id of the value to get |
| 368 | * |
| 369 | * @return the associated value |
| 370 | */ |
| 371 | public Integer getColor(E id) { |
| 372 | return BundleHelper.parseColor(getString(id)); |
| 373 | } |
| 374 | |
| 375 | /** |
| 376 | * Set the value associated to the given id as a colour. |
| 377 | * <p> |
| 378 | * The value is a BGRA value. |
| 379 | * |
| 380 | * @param id |
| 381 | * the id of the value to set |
| 382 | * @param color |
| 383 | * the new colour |
| 384 | */ |
| 385 | public void setColor(E id, Integer color) { |
| 386 | setString(id, BundleHelper.fromColor(color)); |
| 387 | } |
| 388 | |
| 389 | /** |
| 390 | * Return the value associated to the given id as a list of values if it is |
| 391 | * found and can be parsed. |
| 392 | * <p> |
| 393 | * If no value is associated, take the default one if any. |
| 394 | * |
| 395 | * @param id |
| 396 | * the id of the value to get |
| 397 | * |
| 398 | * @return the associated list, empty if the value is empty, NULL if it is |
| 399 | * not found or cannot be parsed as a list |
| 400 | */ |
| 401 | public List<String> getList(E id) { |
| 402 | return BundleHelper.parseList(getString(id)); |
| 403 | } |
| 404 | |
| 405 | /** |
| 406 | * Set the value associated to the given id as a list of values. |
| 407 | * |
| 408 | * @param id |
| 409 | * the id of the value to set |
| 410 | * @param list |
| 411 | * the new list of values |
| 412 | */ |
| 413 | public void setList(E id, List<String> list) { |
| 414 | setString(id, BundleHelper.fromList(list)); |
| 415 | } |
| 416 | |
| 417 | /** |
| 418 | * Create/update the .properties file. |
| 419 | * <p> |
| 420 | * Will use the most likely candidate as base if the file does not already |
| 421 | * exists and this resource is translatable (for instance, "en_US" will use |
| 422 | * "en" as a base if the resource is a translation file). |
| 423 | * <p> |
| 424 | * Will update the files in {@link Bundles#getDirectory()}; it <b>MUST</b> |
| 425 | * be set. |
| 426 | * |
| 427 | * @throws IOException |
| 428 | * in case of IO errors |
| 429 | */ |
| 430 | public void updateFile() throws IOException { |
| 431 | updateFile(Bundles.getDirectory()); |
| 432 | } |
| 433 | |
| 434 | /** |
| 435 | * Create/update the .properties file. |
| 436 | * <p> |
| 437 | * Will use the most likely candidate as base if the file does not already |
| 438 | * exists and this resource is translatable (for instance, "en_US" will use |
| 439 | * "en" as a base if the resource is a translation file). |
| 440 | * |
| 441 | * @param path |
| 442 | * the path where the .properties files are, <b>MUST NOT</b> be |
| 443 | * NULL |
| 444 | * |
| 445 | * @throws IOException |
| 446 | * in case of IO errors |
| 447 | */ |
| 448 | public void updateFile(String path) throws IOException { |
| 449 | File file = getUpdateFile(path); |
| 450 | |
| 451 | BufferedWriter writer = new BufferedWriter(new OutputStreamWriter( |
| 452 | new FileOutputStream(file), "UTF-8")); |
| 453 | |
| 454 | writeHeader(writer); |
| 455 | writer.write("\n"); |
| 456 | writer.write("\n"); |
| 457 | |
| 458 | for (Field field : type.getDeclaredFields()) { |
| 459 | Meta meta = field.getAnnotation(Meta.class); |
| 460 | if (meta != null) { |
| 461 | E id = Enum.valueOf(type, field.getName()); |
| 462 | String info = getMetaInfo(meta); |
| 463 | |
| 464 | if (info != null) { |
| 465 | writer.write(info); |
| 466 | writer.write("\n"); |
| 467 | } |
| 468 | |
| 469 | writeValue(writer, id); |
| 470 | } |
| 471 | } |
| 472 | |
| 473 | writer.close(); |
| 474 | } |
| 475 | |
| 476 | /** |
| 477 | * Delete the .properties file. |
| 478 | * <p> |
| 479 | * Will use the most likely candidate as base if the file does not already |
| 480 | * exists and this resource is translatable (for instance, "en_US" will use |
| 481 | * "en" as a base if the resource is a translation file). |
| 482 | * <p> |
| 483 | * Will delete the files in {@link Bundles#getDirectory()}; it <b>MUST</b> |
| 484 | * be set. |
| 485 | * |
| 486 | * @return TRUE if the file was deleted |
| 487 | */ |
| 488 | public boolean deleteFile() { |
| 489 | return deleteFile(Bundles.getDirectory()); |
| 490 | } |
| 491 | |
| 492 | /** |
| 493 | * Delete the .properties file. |
| 494 | * <p> |
| 495 | * Will use the most likely candidate as base if the file does not already |
| 496 | * exists and this resource is translatable (for instance, "en_US" will use |
| 497 | * "en" as a base if the resource is a translation file). |
| 498 | * |
| 499 | * @param path |
| 500 | * the path where the .properties files are, <b>MUST NOT</b> be |
| 501 | * NULL |
| 502 | * |
| 503 | * @return TRUE if the file was deleted |
| 504 | */ |
| 505 | public boolean deleteFile(String path) { |
| 506 | File file = getUpdateFile(path); |
| 507 | return file.delete(); |
| 508 | } |
| 509 | |
| 510 | /** |
| 511 | * The description {@link TransBundle}, that is, a {@link TransBundle} |
| 512 | * dedicated to the description of the values of the given {@link Bundle} |
| 513 | * (can be NULL). |
| 514 | * |
| 515 | * @return the description {@link TransBundle} |
| 516 | */ |
| 517 | public TransBundle<E> getDescriptionBundle() { |
| 518 | return descriptionBundle; |
| 519 | } |
| 520 | |
| 521 | /** |
| 522 | * Reload the {@link Bundle} data files. |
| 523 | * |
| 524 | * @param resetToDefault |
| 525 | * reset to the default configuration (do not look into the |
| 526 | * possible user configuration files, only take the original |
| 527 | * configuration) |
| 528 | */ |
| 529 | public void reload(boolean resetToDefault) { |
| 530 | setBundle(keyType, Locale.getDefault(), resetToDefault); |
| 531 | } |
| 532 | |
| 533 | /** |
| 534 | * Check if the internal map contains the given key. |
| 535 | * |
| 536 | * @param key |
| 537 | * the key to check for |
| 538 | * |
| 539 | * @return true if it does |
| 540 | */ |
| 541 | protected boolean containsKey(String key) { |
| 542 | return changeMap.containsKey(key) || map.containsKey(key); |
| 543 | } |
| 544 | |
| 545 | /** |
| 546 | * Get the value for the given key if it exists in the internal map, or |
| 547 | * <tt>def</tt> if not. |
| 548 | * |
| 549 | * @param key |
| 550 | * the key to check for |
| 551 | * @param def |
| 552 | * the default value when it is not present in the internal map |
| 553 | * |
| 554 | * @return the value, or <tt>def</tt> if not found |
| 555 | */ |
| 556 | protected String getString(String key, String def) { |
| 557 | if (changeMap.containsKey(key)) { |
| 558 | return changeMap.get(key); |
| 559 | } |
| 560 | |
| 561 | if (map.containsKey(key)) { |
| 562 | return map.get(key); |
| 563 | } |
| 564 | |
| 565 | return def; |
| 566 | } |
| 567 | |
| 568 | /** |
| 569 | * Set the value for this key, in the change map (it is kept in memory, not |
| 570 | * yet on disk). |
| 571 | * |
| 572 | * @param key |
| 573 | * the key |
| 574 | * @param value |
| 575 | * the associated value |
| 576 | */ |
| 577 | protected void setString(String key, String value) { |
| 578 | changeMap.put(key, value == null ? null : value.trim()); |
| 579 | } |
| 580 | |
| 581 | /** |
| 582 | * Return formated, display-able information from the {@link Meta} field |
| 583 | * given. Each line will always starts with a "#" character. |
| 584 | * |
| 585 | * @param meta |
| 586 | * the {@link Meta} field |
| 587 | * |
| 588 | * @return the information to display or NULL if none |
| 589 | */ |
| 590 | protected String getMetaInfo(Meta meta) { |
| 591 | String desc = meta.description(); |
| 592 | boolean group = meta.group(); |
| 593 | Meta.Format format = meta.format(); |
| 594 | String[] list = meta.list(); |
| 595 | boolean nullable = meta.nullable(); |
| 596 | String def = meta.def(); |
| 597 | boolean array = meta.array(); |
| 598 | |
| 599 | // Default, empty values -> NULL |
| 600 | if (desc.length() + list.length + def.length() == 0 && !group |
| 601 | && nullable && format == Format.STRING) { |
| 602 | return null; |
| 603 | } |
| 604 | |
| 605 | StringBuilder builder = new StringBuilder(); |
| 606 | for (String line : desc.split("\n")) { |
| 607 | builder.append("# ").append(line).append("\n"); |
| 608 | } |
| 609 | |
| 610 | if (group) { |
| 611 | builder.append("# This item is used as a group, its content is not expected to be used."); |
| 612 | } else { |
| 613 | builder.append("# (FORMAT: ").append(format) |
| 614 | .append(nullable ? "" : ", required"); |
| 615 | builder.append(") "); |
| 616 | |
| 617 | if (list.length > 0) { |
| 618 | builder.append("\n# ALLOWED VALUES: "); |
| 619 | boolean first = true; |
| 620 | for (String value : list) { |
| 621 | if (!first) { |
| 622 | builder.append(", "); |
| 623 | } |
| 624 | builder.append(BundleHelper.escape(value)); |
| 625 | first = false; |
| 626 | } |
| 627 | } |
| 628 | |
| 629 | if (array) { |
| 630 | builder.append("\n# (This item accepts a list of escaped comma-separated values)"); |
| 631 | } |
| 632 | } |
| 633 | |
| 634 | return builder.toString(); |
| 635 | } |
| 636 | |
| 637 | /** |
| 638 | * The display name used in the <tt>.properties file</tt>. |
| 639 | * |
| 640 | * @return the name |
| 641 | */ |
| 642 | protected String getBundleDisplayName() { |
| 643 | return keyType.toString(); |
| 644 | } |
| 645 | |
| 646 | /** |
| 647 | * Write the header found in the configuration <tt>.properties</tt> file of |
| 648 | * this {@link Bundles}. |
| 649 | * |
| 650 | * @param writer |
| 651 | * the {@link Writer} to write the header in |
| 652 | * |
| 653 | * @throws IOException |
| 654 | * in case of IO error |
| 655 | */ |
| 656 | protected void writeHeader(Writer writer) throws IOException { |
| 657 | writer.write("# " + getBundleDisplayName() + "\n"); |
| 658 | writer.write("#\n"); |
| 659 | } |
| 660 | |
| 661 | /** |
| 662 | * Write the given data to the config file, i.e., "MY_ID = my_curent_value" |
| 663 | * followed by a new line. |
| 664 | * <p> |
| 665 | * Will prepend a # sign if the is is not set (see |
| 666 | * {@link Bundle#isSet(Enum, boolean)}). |
| 667 | * |
| 668 | * @param writer |
| 669 | * the {@link Writer} to write into |
| 670 | * @param id |
| 671 | * the id to write |
| 672 | * |
| 673 | * @throws IOException |
| 674 | * in case of IO error |
| 675 | */ |
| 676 | protected void writeValue(Writer writer, E id) throws IOException { |
| 677 | boolean set = isSet(id, false); |
| 678 | writeValue(writer, id.name(), getString(id), set); |
| 679 | } |
| 680 | |
| 681 | /** |
| 682 | * Write the given data to the config file, i.e., "MY_ID = my_curent_value" |
| 683 | * followed by a new line. |
| 684 | * <p> |
| 685 | * Will prepend a # sign if the is is not set. |
| 686 | * |
| 687 | * @param writer |
| 688 | * the {@link Writer} to write into |
| 689 | * @param id |
| 690 | * the id to write |
| 691 | * @param value |
| 692 | * the id's value |
| 693 | * @param set |
| 694 | * the value is set in this {@link Bundle} |
| 695 | * |
| 696 | * @throws IOException |
| 697 | * in case of IO error |
| 698 | */ |
| 699 | protected void writeValue(Writer writer, String id, String value, |
| 700 | boolean set) throws IOException { |
| 701 | |
| 702 | if (!set) { |
| 703 | writer.write('#'); |
| 704 | } |
| 705 | |
| 706 | writer.write(id); |
| 707 | writer.write(" = "); |
| 708 | |
| 709 | if (value == null) { |
| 710 | value = ""; |
| 711 | } |
| 712 | |
| 713 | String[] lines = value.replaceAll("\t", "\\\\\\t").split("\n"); |
| 714 | for (int i = 0; i < lines.length; i++) { |
| 715 | writer.write(lines[i]); |
| 716 | if (i < lines.length - 1) { |
| 717 | writer.write("\\n\\"); |
| 718 | } |
| 719 | writer.write("\n"); |
| 720 | } |
| 721 | } |
| 722 | |
| 723 | /** |
| 724 | * Return the source file for this {@link Bundles} from the given path. |
| 725 | * |
| 726 | * @param path |
| 727 | * the path where the .properties files are |
| 728 | * |
| 729 | * @return the source {@link File} |
| 730 | */ |
| 731 | protected File getUpdateFile(String path) { |
| 732 | return new File(path, keyType.name() + ".properties"); |
| 733 | } |
| 734 | |
| 735 | /** |
| 736 | * Change the currently used bundle, and reset all changes. |
| 737 | * |
| 738 | * @param name |
| 739 | * the name of the bundle to load |
| 740 | * @param locale |
| 741 | * the {@link Locale} to use |
| 742 | * @param resetToDefault |
| 743 | * reset to the default configuration (do not look into the |
| 744 | * possible user configuration files, only take the original |
| 745 | * configuration) |
| 746 | */ |
| 747 | protected void setBundle(Enum<?> name, Locale locale, boolean resetToDefault) { |
| 748 | changeMap.clear(); |
| 749 | String dir = Bundles.getDirectory(); |
| 750 | String bname = type.getPackage().getName() + "." + name.name(); |
| 751 | |
| 752 | boolean found = false; |
| 753 | if (!resetToDefault && dir != null) { |
| 754 | // Look into Bundles.getDirectory() for .properties files |
| 755 | try { |
| 756 | File file = getPropertyFile(dir, name.name(), locale); |
| 757 | if (file != null) { |
| 758 | Reader reader = new InputStreamReader(new FileInputStream( |
| 759 | file), "UTF-8"); |
| 760 | resetMap(new PropertyResourceBundle(reader)); |
| 761 | found = true; |
| 762 | } |
| 763 | } catch (IOException e) { |
| 764 | e.printStackTrace(); |
| 765 | } |
| 766 | } |
| 767 | |
| 768 | if (!found) { |
| 769 | // Look into the package itself for resources |
| 770 | try { |
| 771 | resetMap(ResourceBundle |
| 772 | .getBundle(bname, locale, type.getClassLoader(), |
| 773 | new FixedResourceBundleControl())); |
| 774 | found = true; |
| 775 | } catch (MissingResourceException e) { |
| 776 | } catch (Exception e) { |
| 777 | e.printStackTrace(); |
| 778 | } |
| 779 | } |
| 780 | |
| 781 | if (!found) { |
| 782 | // We have no bundle for this Bundle |
| 783 | System.err.println("No bundle found for: " + bname); |
| 784 | resetMap(null); |
| 785 | } |
| 786 | } |
| 787 | |
| 788 | /** |
| 789 | * Reset the backing map to the content of the given bundle, or with default |
| 790 | * values if bundle is NULL. |
| 791 | * |
| 792 | * @param bundle |
| 793 | * the bundle to copy |
| 794 | */ |
| 795 | protected void resetMap(ResourceBundle bundle) { |
| 796 | this.map.clear(); |
| 797 | for (Field field : type.getDeclaredFields()) { |
| 798 | try { |
| 799 | Meta meta = field.getAnnotation(Meta.class); |
| 800 | if (meta != null) { |
| 801 | E id = Enum.valueOf(type, field.getName()); |
| 802 | |
| 803 | String value; |
| 804 | if (bundle != null) { |
| 805 | value = bundle.getString(id.name()); |
| 806 | } else { |
| 807 | value = meta.def(); |
| 808 | } |
| 809 | |
| 810 | this.map.put(id.name(), value == null ? null : value.trim()); |
| 811 | } |
| 812 | } catch (MissingResourceException e) { |
| 813 | } |
| 814 | } |
| 815 | } |
| 816 | |
| 817 | /** |
| 818 | * Take a snapshot of the changes in memory in this {@link Bundle} made by |
| 819 | * the "set" methods ( {@link Bundle#setString(Enum, String)}...) at the |
| 820 | * current time. |
| 821 | * |
| 822 | * @return a snapshot to use with {@link Bundle#restoreSnapshot(Object)} |
| 823 | */ |
| 824 | public Object takeSnapshot() { |
| 825 | return new HashMap<String, String>(changeMap); |
| 826 | } |
| 827 | |
| 828 | /** |
| 829 | * Restore a snapshot taken with {@link Bundle}, or reset the current |
| 830 | * changes if the snapshot is NULL. |
| 831 | * |
| 832 | * @param snap |
| 833 | * the snapshot or NULL |
| 834 | */ |
| 835 | @SuppressWarnings("unchecked") |
| 836 | public void restoreSnapshot(Object snap) { |
| 837 | if (snap == null) { |
| 838 | changeMap.clear(); |
| 839 | } else { |
| 840 | if (snap instanceof Map) { |
| 841 | changeMap = (Map<String, String>) snap; |
| 842 | } else { |
| 843 | throw new RuntimeException( |
| 844 | "Restoring changes in a Bundle must be done on a changes snapshot, " |
| 845 | + "or NULL to discard current changes"); |
| 846 | } |
| 847 | } |
| 848 | } |
| 849 | |
| 850 | /** |
| 851 | * Return the resource file that is closer to the {@link Locale}. |
| 852 | * |
| 853 | * @param dir |
| 854 | * the directory to look into |
| 855 | * @param name |
| 856 | * the file base name (without <tt>.properties</tt>) |
| 857 | * @param locale |
| 858 | * the {@link Locale} |
| 859 | * |
| 860 | * @return the closest match or NULL if none |
| 861 | */ |
| 862 | private File getPropertyFile(String dir, String name, Locale locale) { |
| 863 | List<String> locales = new ArrayList<String>(); |
| 864 | if (locale != null) { |
| 865 | String country = locale.getCountry() == null ? "" : locale |
| 866 | .getCountry(); |
| 867 | String language = locale.getLanguage() == null ? "" : locale |
| 868 | .getLanguage(); |
| 869 | if (!language.isEmpty() && !country.isEmpty()) { |
| 870 | locales.add("_" + language + "-" + country); |
| 871 | } |
| 872 | if (!language.isEmpty()) { |
| 873 | locales.add("_" + language); |
| 874 | } |
| 875 | } |
| 876 | |
| 877 | locales.add(""); |
| 878 | |
| 879 | File file = null; |
| 880 | for (String loc : locales) { |
| 881 | file = new File(dir, name + loc + ".properties"); |
| 882 | if (file.exists()) { |
| 883 | break; |
| 884 | } |
| 885 | |
| 886 | file = null; |
| 887 | } |
| 888 | |
| 889 | return file; |
| 890 | } |
| 891 | } |