src/be/nikiroo/fanfix/Main.java

   1 package be.nikiroo.fanfix;
   2
   3 import java.io.File;
   4 import java.io.IOException;
   5 import java.net.MalformedURLException;
   6 import java.net.URL;
   7 import java.util.ArrayList;
   8 import java.util.List;
   9
  10 import be.nikiroo.fanfix.bundles.StringId;
  11 import be.nikiroo.fanfix.data.Chapter;
  12 import be.nikiroo.fanfix.data.MetaData;
  13 import be.nikiroo.fanfix.data.Story;
  14 import be.nikiroo.fanfix.library.BasicLibrary;
  15 import be.nikiroo.fanfix.library.CacheLibrary;
  16 import be.nikiroo.fanfix.library.LocalLibrary;
  17 import be.nikiroo.fanfix.library.RemoteLibrary;
  18 import be.nikiroo.fanfix.library.RemoteLibraryServer;
  19 import be.nikiroo.fanfix.output.BasicOutput;
  20 import be.nikiroo.fanfix.output.BasicOutput.OutputType;
  21 import be.nikiroo.fanfix.reader.BasicReader;
  22 import be.nikiroo.fanfix.reader.Reader;
  23 import be.nikiroo.fanfix.reader.Reader.ReaderType;
  24 import be.nikiroo.fanfix.searchable.BasicSearchable;
  25 import be.nikiroo.fanfix.supported.BasicSupport;
  26 import be.nikiroo.fanfix.supported.SupportType;
  27 import be.nikiroo.utils.Progress;
  28 import be.nikiroo.utils.Version;
  29 import be.nikiroo.utils.serial.server.ServerObject;
  30
  31 /**
  32  * Main program entry point.
  33  *
  34  * @author niki
  35  */
  36 public class Main {
  37         private enum MainAction {
  38                 IMPORT, EXPORT, CONVERT, READ, READ_URL, LIST, HELP, SET_READER, START, VERSION, SERVER, STOP_SERVER, REMOTE, SET_SOURCE, SET_TITLE, SET_AUTHOR, SEARCH, TAG
  39         }
  40
  41         /**
  42          * Main program entry point.
  43          * <p>
  44          * Known environment variables:
  45          * <ul>
  46          * <li>NOUTF: if set to 1 or 'true', the program will prefer non-unicode
  47          * {@link String}s when possible</li>
  48          * <li>CONFIG_DIR: a path where to look for the <tt>.properties</tt> files
  49          * before taking the usual ones; they will also be saved/updated into this
  50          * path when the program starts</li>
  51          * <li>DEBUG: if set to 1 or 'true', the program will override the DEBUG_ERR
  52          * configuration value with 'true'</li>
  53          * </ul>
  54          * <p>
  55          * <ul>
  56          * <li>--import [URL]: import into library</li>
  57          * <li>--export [id] [output_type] [target]: export story to target</li>
  58          * <li>--convert [URL] [output_type] [target] (+info): convert URL into
  59          * target</li>
  60          * <li>--read [id] ([chapter number]): read the given story from the library
  61          * </li>
  62          * <li>--read-url [URL] ([chapter number]): convert on the fly and read the
  63          * story, without saving it</li>
  64          * <li>--search: list the supported websites (where)</li>
  65          * <li>--search [where] [keywords] (page [page]) (item [item]): search on
  66          * the supported website and display the given results page of stories it
  67          * found, or the story details if asked</li>
  68          * <li>--tag [where]: list all the tags supported by this website</li>
  69          * <li>--tag [index 1]... (page [page]) (item [item]): search for the given
  70          * stories or subtags, tag by tag, and display information about a specific
  71          * page of results or about a specific item if requested</li>
  72          * <li>--list ([type]): list the stories present in the library</li>
  73          * <li>--set-source [id] [new source]: change the source of the given story</li>
  74          * <li>--set-title [id] [new title]: change the title of the given story</li>
  75          * <li>--set-author [id] [new author]: change the author of the given story</li>
  76          * <li>--set-reader [reader type]: set the reader type to CLI, TUI or LOCAL
  77          * for this command</li>
  78          * <li>--version: get the version of the program</li>
  79          * <li>--server [key] [port]: start a server on this port</li>
  80          * <li>--stop-server [key] [port]: stop the running server on this port if
  81          * any</li>
  82          * <li>--remote [key] [host] [port]: use a the given remote library</li>
  83          * </ul>
  84          *
  85          * @param args
  86          *            see method description
  87          */
  88         public static void main(String[] args) {
  89                 String urlString = null;
  90                 String luid = null;
  91                 String sourceString = null;
  92                 String titleString = null;
  93                 String authorString = null;
  94                 String chapString = null;
  95                 String target = null;
  96                 String key = null;
  97                 MainAction action = MainAction.START;
  98                 Boolean plusInfo = null;
  99                 String host = null;
 100                 Integer port = null;
 101                 SupportType searchOn = null;
 102                 String search = null;
 103                 List<Integer> tags = new ArrayList<Integer>();
 104                 Integer page = null;
 105                 Integer item = null;
 106
 107                 boolean noMoreActions = false;
 108
 109                 int exitCode = 0;
 110                 for (int i = 0; exitCode == 0 && i < args.length; i++) {
 111                         // Action (--) handling:
 112                         if (!noMoreActions && args[i].startsWith("--")) {
 113                                 if (args[i].equals("--")) {
 114                                         noMoreActions = true;
 115                                 } else {
 116                                         try {
 117                                                 action = MainAction.valueOf(args[i].substring(2)
 118                                                                 .toUpperCase().replace("-", "_"));
 119                                         } catch (Exception e) {
 120                                                 Instance.getTraceHandler().error(
 121                                                                 new IllegalArgumentException("Unknown action: "
 122                                                                                 + args[i], e));
 123                                                 exitCode = 255;
 124                                         }
 125                                 }
 126
 127                                 continue;
 128                         }
 129
 130                         switch (action) {
 131                         case IMPORT:
 132                                 if (urlString == null) {
 133                                         urlString = args[i];
 134                                 } else {
 135                                         exitCode = 255;
 136                                 }
 137                                 break;
 138                         case EXPORT:
 139                                 if (luid == null) {
 140                                         luid = args[i];
 141                                 } else if (sourceString == null) {
 142                                         sourceString = args[i];
 143                                 } else if (target == null) {
 144                                         target = args[i];
 145                                 } else {
 146                                         exitCode = 255;
 147                                 }
 148                                 break;
 149                         case CONVERT:
 150                                 if (urlString == null) {
 151                                         urlString = args[i];
 152                                 } else if (sourceString == null) {
 153                                         sourceString = args[i];
 154                                 } else if (target == null) {
 155                                         target = args[i];
 156                                 } else if (plusInfo == null) {
 157                                         if ("+info".equals(args[i])) {
 158                                                 plusInfo = true;
 159                                         } else {
 160                                                 exitCode = 255;
 161                                         }
 162                                 } else {
 163                                         exitCode = 255;
 164                                 }
 165                                 break;
 166                         case LIST:
 167                                 if (sourceString == null) {
 168                                         sourceString = args[i];
 169                                 } else {
 170                                         exitCode = 255;
 171                                 }
 172                                 break;
 173                         case SET_SOURCE:
 174                                 if (luid == null) {
 175                                         luid = args[i];
 176                                 } else if (sourceString == null) {
 177                                         sourceString = args[i];
 178                                 } else {
 179                                         exitCode = 255;
 180                                 }
 181                                 break;
 182                         case SET_TITLE:
 183                                 if (luid == null) {
 184                                         luid = args[i];
 185                                 } else if (sourceString == null) {
 186                                         titleString = args[i];
 187                                 } else {
 188                                         exitCode = 255;
 189                                 }
 190                                 break;
 191                         case SET_AUTHOR:
 192                                 if (luid == null) {
 193                                         luid = args[i];
 194                                 } else if (sourceString == null) {
 195                                         authorString = args[i];
 196                                 } else {
 197                                         exitCode = 255;
 198                                 }
 199                                 break;
 200                         case READ:
 201                                 if (luid == null) {
 202                                         luid = args[i];
 203                                 } else if (chapString == null) {
 204                                         chapString = args[i];
 205                                 } else {
 206                                         exitCode = 255;
 207                                 }
 208                                 break;
 209                         case READ_URL:
 210                                 if (urlString == null) {
 211                                         urlString = args[i];
 212                                 } else if (chapString == null) {
 213                                         chapString = args[i];
 214                                 } else {
 215                                         exitCode = 255;
 216                                 }
 217                                 break;
 218                         case SEARCH:
 219                                 if (searchOn == null) {
 220                                         searchOn = SupportType.valueOfAllOkUC(args[i]);
 221
 222                                         if (searchOn == null) {
 223                                                 Instance.getTraceHandler().error(
 224                                                                 "Website not known: <" + args[i] + ">");
 225                                                 exitCode = 255;
 226                                         }
 227
 228                                         if (BasicSearchable.getSearchable(searchOn) == null) {
 229                                                 Instance.getTraceHandler().error(
 230                                                                 "Website not supported: " + searchOn);
 231                                                 exitCode = 255;
 232                                         }
 233                                 } else if (search == null) {
 234                                         search = args[i];
 235                                 } else if (page != null && page == -1) {
 236                                         try {
 237                                                 page = Integer.parseInt(args[i]);
 238                                         } catch (Exception e) {
 239                                                 page = -2;
 240                                         }
 241                                 } else if (item != null && item == -1) {
 242                                         try {
 243                                                 item = Integer.parseInt(args[i]);
 244                                         } catch (Exception e) {
 245                                                 item = -2;
 246                                         }
 247                                 } else if (page == null || item == null) {
 248                                         if (page == null && "page".equals(args[i])) {
 249                                                 page = -1;
 250                                         } else if (item == null && "item".equals(args[i])) {
 251                                                 item = -1;
 252                                         } else {
 253                                                 exitCode = 255;
 254                                         }
 255                                 } else {
 256                                         exitCode = 255;
 257                                 }
 258                                 break;
 259                         case TAG:
 260                                 if (searchOn == null) {
 261                                         searchOn = SupportType.valueOfAllOkUC(args[i]);
 262
 263                                         if (searchOn == null) {
 264                                                 Instance.getTraceHandler().error(
 265                                                                 "Website not known: <" + args[i] + ">");
 266                                                 exitCode = 255;
 267                                         }
 268
 269                                         if (BasicSearchable.getSearchable(searchOn) == null) {
 270                                                 Instance.getTraceHandler().error(
 271                                                                 "Website not supported: " + searchOn);
 272                                                 exitCode = 255;
 273                                         }
 274                                 } else if (page == null && item == null) {
 275                                         if ("page".equals(args[i])) {
 276                                                 page = -1;
 277                                         } else if ("item".equals(args[i])) {
 278                                                 item = -1;
 279                                         } else {
 280                                                 try {
 281                                                         int index = Integer.parseInt(args[i]);
 282                                                         tags.add(index);
 283                                                 } catch (NumberFormatException e) {
 284                                                         Instance.getTraceHandler().error(
 285                                                                         "Invalid tag index: " + args[i]);
 286                                                         exitCode = 255;
 287                                                 }
 288                                         }
 289                                 } else if (page != null && page == -1) {
 290                                         try {
 291                                                 page = Integer.parseInt(args[i]);
 292                                         } catch (Exception e) {
 293                                                 page = -2;
 294                                         }
 295                                 } else if (item != null && item == -1) {
 296                                         try {
 297                                                 item = Integer.parseInt(args[i]);
 298                                         } catch (Exception e) {
 299                                                 item = -2;
 300                                         }
 301                                 } else if (page == null || item == null) {
 302                                         if (page == null && "page".equals(args[i])) {
 303                                                 page = -1;
 304                                         } else if (item == null && "item".equals(args[i])) {
 305                                                 item = -1;
 306                                         } else {
 307                                                 exitCode = 255;
 308                                         }
 309                                 } else {
 310                                         exitCode = 255;
 311                                 }
 312                                 break;
 313                         case HELP:
 314                                 exitCode = 255;
 315                                 break;
 316                         case SET_READER:
 317                                 exitCode = setReaderType(args[i]);
 318                                 action = MainAction.START;
 319                                 break;
 320                         case START:
 321                                 exitCode = 255; // not supposed to be selected by user
 322                                 break;
 323                         case VERSION:
 324                                 exitCode = 255; // no arguments for this option
 325                                 break;
 326                         case SERVER:
 327                         case STOP_SERVER:
 328                                 if (key == null) {
 329                                         key = args[i];
 330                                 } else if (port == null) {
 331                                         port = Integer.parseInt(args[i]);
 332                                 } else {
 333                                         exitCode = 255;
 334                                 }
 335                                 break;
 336                         case REMOTE:
 337                                 if (key == null) {
 338                                         key = args[i];
 339                                 } else if (host == null) {
 340                                         host = args[i];
 341                                 } else if (port == null) {
 342                                         port = Integer.parseInt(args[i]);
 343
 344                                         BasicLibrary lib = new RemoteLibrary(key, host, port);
 345                                         lib = new CacheLibrary(Instance.getRemoteDir(host), lib);
 346
 347                                         BasicReader.setDefaultLibrary(lib);
 348
 349                                         action = MainAction.START;
 350                                 } else {
 351                                         exitCode = 255;
 352                                 }
 353                                 break;
 354                         }
 355                 }
 356
 357                 final Progress mainProgress = new Progress(0, 80);
 358                 mainProgress.addProgressListener(new Progress.ProgressListener() {
 359                         private int current = mainProgress.getMin();
 360
 361                         @Override
 362                         public void progress(Progress progress, String name) {
 363                                 int diff = progress.getProgress() - current;
 364                                 current += diff;
 365
 366                                 if (diff <= 0)
 367                                         return;
 368
 369                                 StringBuilder builder = new StringBuilder();
 370                                 for (int i = 0; i < diff; i++) {
 371                                         builder.append('.');
 372                                 }
 373
 374                                 System.err.print(builder.toString());
 375
 376                                 if (progress.isDone()) {
 377                                         System.err.println("");
 378                                 }
 379                         }
 380                 });
 381                 Progress pg = new Progress();
 382                 mainProgress.addProgress(pg, mainProgress.getMax());
 383
 384                 VersionCheck updates = VersionCheck.check();
 385                 if (updates.isNewVersionAvailable()) {
 386                         // Sent to syserr so not to cause problem if one tries to capture a
 387                         // story content in text mode
 388                         System.err
 389                                         .println("A new version of the program is available at https://github.com/nikiroo/fanfix/releases");
 390                         System.err.println("");
 391                         for (Version v : updates.getNewer()) {
 392                                 System.err.println("\tVersion " + v);
 393                                 System.err.println("\t-------------");
 394                                 System.err.println("");
 395                                 for (String it : updates.getChanges().get(v)) {
 396                                         System.err.println("\t- " + it);
 397                                 }
 398                                 System.err.println("");
 399                         }
 400                 }
 401
 402                 if (exitCode != 255) {
 403                         switch (action) {
 404                         case IMPORT:
 405                                 exitCode = imprt(urlString, pg);
 406                                 updates.ok(); // we consider it read
 407                                 break;
 408                         case EXPORT:
 409                                 exitCode = export(luid, sourceString, target, pg);
 410                                 updates.ok(); // we consider it read
 411                                 break;
 412                         case CONVERT:
 413                                 exitCode = convert(urlString, sourceString, target,
 414                                                 plusInfo == null ? false : plusInfo, pg);
 415                                 updates.ok(); // we consider it read
 416                                 break;
 417                         case LIST:
 418                                 if (BasicReader.getReader() == null) {
 419                                         Instance.getTraceHandler()
 420                                                         .error(new Exception(
 421                                                                         "No reader type has been configured"));
 422                                         exitCode = 10;
 423                                         break;
 424                                 }
 425                                 exitCode = list(sourceString);
 426                                 break;
 427                         case SET_SOURCE:
 428                                 try {
 429                                         Instance.getLibrary().changeSource(luid, sourceString, pg);
 430                                 } catch (IOException e1) {
 431                                         Instance.getTraceHandler().error(e1);
 432                                         exitCode = 21;
 433                                 }
 434                                 break;
 435                         case SET_TITLE:
 436                                 try {
 437                                         Instance.getLibrary().changeTitle(luid, titleString, pg);
 438                                 } catch (IOException e1) {
 439                                         Instance.getTraceHandler().error(e1);
 440                                         exitCode = 22;
 441                                 }
 442                                 break;
 443                         case SET_AUTHOR:
 444                                 try {
 445                                         Instance.getLibrary().changeAuthor(luid, authorString, pg);
 446                                 } catch (IOException e1) {
 447                                         Instance.getTraceHandler().error(e1);
 448                                         exitCode = 23;
 449                                 }
 450                                 break;
 451                         case READ:
 452                                 if (BasicReader.getReader() == null) {
 453                                         Instance.getTraceHandler()
 454                                                         .error(new Exception(
 455                                                                         "No reader type has been configured"));
 456                                         exitCode = 10;
 457                                         break;
 458                                 }
 459                                 exitCode = read(luid, chapString, true);
 460                                 break;
 461                         case READ_URL:
 462                                 if (BasicReader.getReader() == null) {
 463                                         Instance.getTraceHandler()
 464                                                         .error(new Exception(
 465                                                                         "No reader type has been configured"));
 466                                         exitCode = 10;
 467                                         break;
 468                                 }
 469                                 exitCode = read(urlString, chapString, false);
 470                                 break;
 471                         case SEARCH:
 472                                 page = page == null ? 1 : page;
 473                                 if (page < 0) {
 474                                         Instance.getTraceHandler().error("Incorrect page number");
 475                                         exitCode = 255;
 476                                         break;
 477                                 }
 478
 479                                 item = item == null ? 0 : item;
 480                                 if (item < 0) {
 481                                         Instance.getTraceHandler().error("Incorrect item number");
 482                                         exitCode = 255;
 483                                         break;
 484                                 }
 485
 486                                 if (BasicReader.getReader() == null) {
 487                                         Instance.getTraceHandler()
 488                                                         .error(new Exception(
 489                                                                         "No reader type has been configured"));
 490                                         exitCode = 10;
 491                                         break;
 492                                 }
 493
 494                                 if (searchOn == null) {
 495                                         // TODO: do on reader!!!
 496                                         for (SupportType type : SupportType.values()) {
 497                                                 if (BasicSearchable.getSearchable(type) != null) {
 498                                                         System.out.println(type);
 499                                                 }
 500                                         }
 501                                 } else if (search != null) {
 502                                         try {
 503                                                 BasicReader.getReader().search(searchOn, search, page,
 504                                                                 item, true);
 505                                         } catch (IOException e1) {
 506                                                 Instance.getTraceHandler().error(e1);
 507                                         }
 508                                 } else {
 509                                         exitCode = 255;
 510                                 }
 511
 512                                 break;
 513                         case TAG:
 514                                 if (searchOn == null) {
 515                                         exitCode = 255;
 516                                         break;
 517                                 }
 518
 519                                 page = page == null ? 1 : page;
 520                                 if (page < 0) {
 521                                         Instance.getTraceHandler().error("Incorrect page number");
 522                                         exitCode = 255;
 523                                         break;
 524                                 }
 525
 526                                 item = item == null ? 0 : item;
 527                                 if (item < 0) {
 528                                         Instance.getTraceHandler().error("Incorrect item number");
 529                                         exitCode = 255;
 530                                         break;
 531                                 }
 532
 533                                 if (BasicReader.getReader() == null) {
 534                                         Instance.getTraceHandler()
 535                                                         .error(new Exception(
 536                                                                         "No reader type has been configured"));
 537                                         exitCode = 10;
 538                                         break;
 539                                 }
 540
 541                                 try {
 542                                         BasicReader.getReader().searchTag(searchOn, page, item,
 543                                                         true, tags.toArray(new Integer[] {}));
 544                                 } catch (IOException e1) {
 545                                         Instance.getTraceHandler().error(e1);
 546                                 }
 547
 548                                 break;
 549                         case HELP:
 550                                 syntax(true);
 551                                 exitCode = 0;
 552                                 break;
 553                         case SET_READER:
 554                                 exitCode = 255;
 555                                 break;
 556                         case VERSION:
 557                                 System.out
 558                                                 .println(String.format("Fanfix version %s"
 559                                                                 + "%nhttps://github.com/nikiroo/fanfix/"
 560                                                                 + "%n\tWritten by Nikiroo",
 561                                                                 Version.getCurrentVersion()));
 562                                 updates.ok(); // we consider it read
 563                                 break;
 564                         case START:
 565                                 if (BasicReader.getReader() == null) {
 566                                         Instance.getTraceHandler()
 567                                                         .error(new Exception(
 568                                                                         "No reader type has been configured"));
 569                                         exitCode = 10;
 570                                         break;
 571                                 }
 572                                 BasicReader.getReader().browse(null);
 573                                 break;
 574                         case SERVER:
 575                                 if (port == null) {
 576                                         exitCode = 255;
 577                                         break;
 578                                 }
 579                                 try {
 580                                         ServerObject server = new RemoteLibraryServer(key, port);
 581                                         server.setTraceHandler(Instance.getTraceHandler());
 582                                         server.run();
 583                                 } catch (IOException e) {
 584                                         Instance.getTraceHandler().error(e);
 585                                 }
 586                                 return;
 587                         case STOP_SERVER:
 588                                 if (port == null) {
 589                                         exitCode = 255;
 590                                         break;
 591                                 }
 592
 593                                 new RemoteLibrary(key, host, port).exit();
 594                                 break;
 595                         case REMOTE:
 596                                 exitCode = 255; // should not be reachable (REMOTE -> START)
 597                                 break;
 598                         }
 599                 }
 600
 601                 try {
 602                         Instance.getTempFiles().close();
 603                 } catch (IOException e) {
 604                         Instance.getTraceHandler()
 605                                         .error(new IOException(
 606                                                         "Cannot dispose of the temporary files", e));
 607                 }
 608
 609                 if (exitCode == 255) {
 610                         syntax(false);
 611                 }
 612
 613                 System.exit(exitCode);
 614         }
 615
 616         /**
 617          * Import the given resource into the {@link LocalLibrary}.
 618          *
 619          * @param urlString
 620          *            the resource to import
 621          * @param pg
 622          *            the optional progress reporter
 623          *
 624          * @return the exit return code (0 = success)
 625          */
 626         public static int imprt(String urlString, Progress pg) {
 627                 try {
 628                         Story story = Instance.getLibrary().imprt(
 629                                         BasicReader.getUrl(urlString), pg);
 630                         System.out.println(story.getMeta().getLuid() + ": \""
 631                                         + story.getMeta().getTitle() + "\" imported.");
 632                 } catch (IOException e) {
 633                         Instance.getTraceHandler().error(e);
 634                         return 1;
 635                 }
 636
 637                 return 0;
 638         }
 639
 640         /**
 641          * Export the {@link Story} from the {@link LocalLibrary} to the given
 642          * target.
 643          *
 644          * @param luid
 645          *            the story LUID
 646          * @param typeString
 647          *            the {@link OutputType} to use
 648          * @param target
 649          *            the target
 650          * @param pg
 651          *            the optional progress reporter
 652          *
 653          * @return the exit return code (0 = success)
 654          */
 655         public static int export(String luid, String typeString, String target,
 656                         Progress pg) {
 657                 OutputType type = OutputType.valueOfNullOkUC(typeString, null);
 658                 if (type == null) {
 659                         Instance.getTraceHandler().error(
 660                                         new Exception(trans(StringId.OUTPUT_DESC, typeString)));
 661                         return 1;
 662                 }
 663
 664                 try {
 665                         Instance.getLibrary().export(luid, type, target, pg);
 666                 } catch (IOException e) {
 667                         Instance.getTraceHandler().error(e);
 668                         return 4;
 669                 }
 670
 671                 return 0;
 672         }
 673
 674         /**
 675          * List the stories of the given source from the {@link LocalLibrary}
 676          * (unless NULL is passed, in which case all stories will be listed).
 677          *
 678          * @param source
 679          *            the source to list the known stories of, or NULL to list all
 680          *            stories
 681          *
 682          * @return the exit return code (0 = success)
 683          */
 684         private static int list(String source) {
 685                 List<MetaData> stories;
 686                 stories = BasicReader.getReader().getLibrary().getListBySource(source);
 687
 688                 for (MetaData story : stories) {
 689                         String author = "";
 690                         if (story.getAuthor() != null && !story.getAuthor().isEmpty()) {
 691                                 author = " (" + story.getAuthor() + ")";
 692                         }
 693
 694                         System.out.println(story.getLuid() + ": " + story.getTitle()
 695                                         + author);
 696                 }
 697                 return 0;
 698         }
 699
 700         /**
 701          * Start the current reader for this {@link Story}.
 702          *
 703          * @param story
 704          *            the LUID of the {@link Story} in the {@link LocalLibrary}
 705          *            <b>or</b> the {@link Story} {@link URL}
 706          * @param chapString
 707          *            which {@link Chapter} to read (starting at 1), or NULL to get
 708          *            the {@link Story} description
 709          * @param library
 710          *            TRUE if the source is the {@link Story} LUID, FALSE if it is a
 711          *            {@link URL}
 712          *
 713          * @return the exit return code (0 = success)
 714          */
 715         private static int read(String story, String chapString, boolean library) {
 716                 try {
 717                         Reader reader = BasicReader.getReader();
 718                         if (library) {
 719                                 reader.setMeta(story);
 720                         } else {
 721                                 reader.setMeta(BasicReader.getUrl(story), null);
 722                         }
 723
 724                         if (chapString != null) {
 725                                 try {
 726                                         reader.setChapter(Integer.parseInt(chapString));
 727                                         reader.read(true);
 728                                 } catch (NumberFormatException e) {
 729                                         Instance.getTraceHandler().error(
 730                                                         new IOException("Chapter number cannot be parsed: "
 731                                                                         + chapString, e));
 732                                         return 2;
 733                                 }
 734                         } else {
 735                                 reader.read(true);
 736                         }
 737                 } catch (IOException e) {
 738                         Instance.getTraceHandler().error(e);
 739                         return 1;
 740                 }
 741
 742                 return 0;
 743         }
 744
 745         /**
 746          * Convert the {@link Story} into another format.
 747          *
 748          * @param urlString
 749          *            the source {@link Story} to convert
 750          * @param typeString
 751          *            the {@link OutputType} to convert to
 752          * @param target
 753          *            the target file
 754          * @param infoCover
 755          *            TRUE to also export the cover and info file, even if the given
 756          *            {@link OutputType} does not usually save them
 757          * @param pg
 758          *            the optional progress reporter
 759          *
 760          * @return the exit return code (0 = success)
 761          */
 762         public static int convert(String urlString, String typeString,
 763                         String target, boolean infoCover, Progress pg) {
 764                 int exitCode = 0;
 765
 766                 Instance.getTraceHandler().trace("Convert: " + urlString);
 767                 String sourceName = urlString;
 768                 try {
 769                         URL source = BasicReader.getUrl(urlString);
 770                         sourceName = source.toString();
 771                         if (source.toString().startsWith("file://")) {
 772                                 sourceName = sourceName.substring("file://".length());
 773                         }
 774
 775                         OutputType type = OutputType.valueOfAllOkUC(typeString, null);
 776                         if (type == null) {
 777                                 Instance.getTraceHandler().error(
 778                                                 new IOException(trans(StringId.ERR_BAD_OUTPUT_TYPE,
 779                                                                 typeString)));
 780
 781                                 exitCode = 2;
 782                         } else {
 783                                 try {
 784                                         BasicSupport support = BasicSupport.getSupport(source);
 785
 786                                         if (support != null) {
 787                                                 Instance.getTraceHandler().trace(
 788                                                                 "Support found: " + support.getClass());
 789                                                 Progress pgIn = new Progress();
 790                                                 Progress pgOut = new Progress();
 791                                                 if (pg != null) {
 792                                                         pg.setMax(2);
 793                                                         pg.addProgress(pgIn, 1);
 794                                                         pg.addProgress(pgOut, 1);
 795                                                 }
 796
 797                                                 Story story = support.process(pgIn);
 798                                                 try {
 799                                                         target = new File(target).getAbsolutePath();
 800                                                         BasicOutput.getOutput(type, infoCover, infoCover)
 801                                                                         .process(story, target, pgOut);
 802                                                 } catch (IOException e) {
 803                                                         Instance.getTraceHandler().error(
 804                                                                         new IOException(trans(StringId.ERR_SAVING,
 805                                                                                         target), e));
 806                                                         exitCode = 5;
 807                                                 }
 808                                         } else {
 809                                                 Instance.getTraceHandler().error(
 810                                                                 new IOException(trans(
 811                                                                                 StringId.ERR_NOT_SUPPORTED, source)));
 812
 813                                                 exitCode = 4;
 814                                         }
 815                                 } catch (IOException e) {
 816                                         Instance.getTraceHandler().error(
 817                                                         new IOException(trans(StringId.ERR_LOADING,
 818                                                                         sourceName), e));
 819                                         exitCode = 3;
 820                                 }
 821                         }
 822                 } catch (MalformedURLException e) {
 823                         Instance.getTraceHandler()
 824                                         .error(new IOException(trans(StringId.ERR_BAD_URL,
 825                                                         sourceName), e));
 826                         exitCode = 1;
 827                 }
 828
 829                 return exitCode;
 830         }
 831
 832         /**
 833          * Simple shortcut method to call {link Instance#getTrans()#getString()}.
 834          *
 835          * @param id
 836          *            the ID to translate
 837          *
 838          * @return the translated result
 839          */
 840         private static String trans(StringId id, Object... params) {
 841                 return Instance.getTrans().getString(id, params);
 842         }
 843
 844         /**
 845          * Display the correct syntax of the program to the user to stdout, or an
 846          * error message if the syntax used was wrong on stderr.
 847          *
 848          * @param showHelp
 849          *            TRUE to show the syntax help, FALSE to show "syntax error"
 850          */
 851         private static void syntax(boolean showHelp) {
 852                 if (showHelp) {
 853                         StringBuilder builder = new StringBuilder();
 854                         for (SupportType type : SupportType.values()) {
 855                                 builder.append(trans(StringId.ERR_SYNTAX_TYPE, type.toString(),
 856                                                 type.getDesc()));
 857                                 builder.append('\n');
 858                         }
 859
 860                         String typesIn = builder.toString();
 861                         builder.setLength(0);
 862
 863                         for (OutputType type : OutputType.values()) {
 864                                 builder.append(trans(StringId.ERR_SYNTAX_TYPE, type.toString(),
 865                                                 type.getDesc(true)));
 866                                 builder.append('\n');
 867                         }
 868
 869                         String typesOut = builder.toString();
 870
 871                         System.out.println(trans(StringId.HELP_SYNTAX, typesIn, typesOut));
 872                 } else {
 873                         System.err.println(trans(StringId.ERR_SYNTAX));
 874                 }
 875         }
 876
 877         /**
 878          * Set the default reader type for this session only (it can be changed in
 879          * the configuration file, too, but this value will override it).
 880          *
 881          * @param readerTypeString
 882          *            the type
 883          */
 884         private static int setReaderType(String readerTypeString) {
 885                 try {
 886                         ReaderType readerType = ReaderType.valueOf(readerTypeString
 887                                         .toUpperCase());
 888                         BasicReader.setDefaultReaderType(readerType);
 889                         return 0;
 890                 } catch (IllegalArgumentException e) {
 891                         Instance.getTraceHandler().error(
 892                                         new IOException("Unknown reader type: " + readerTypeString,
 893                                                         e));
 894                         return 1;
 895                 }
 896         }
 897 }