supported/BasicSupport.java

   1 package be.nikiroo.fanfix.supported;
   2
   3 import java.io.IOException;
   4 import java.io.InputStream;
   5 import java.net.MalformedURLException;
   6 import java.net.URL;
   7 import java.util.ArrayList;
   8 import java.util.Date;
   9 import java.util.HashMap;
  10 import java.util.List;
  11 import java.util.Map;
  12 import java.util.Scanner;
  13 import java.util.Map.Entry;
  14
  15 import org.json.JSONObject;
  16 import org.jsoup.helper.DataUtil;
  17 import org.jsoup.nodes.Document;
  18 import org.jsoup.nodes.Element;
  19 import org.jsoup.nodes.Node;
  20
  21 import be.nikiroo.fanfix.Instance;
  22 import be.nikiroo.fanfix.bundles.StringId;
  23 import be.nikiroo.fanfix.data.Chapter;
  24 import be.nikiroo.fanfix.data.MetaData;
  25 import be.nikiroo.fanfix.data.Story;
  26 import be.nikiroo.utils.Progress;
  27 import be.nikiroo.utils.StringUtils;
  28
  29 /**
  30  * This class is the base class used by the other support classes. It can be
  31  * used outside of this package, and have static method that you can use to get
  32  * access to the correct support class.
  33  * <p>
  34  * It will be used with 'resources' (usually web pages or files).
  35  *
  36  * @author niki
  37  */
  38 public abstract class BasicSupport {
  39         private Document sourceNode;
  40         private URL source;
  41         private SupportType type;
  42         private URL currentReferer; // with only one 'r', as in 'HTTP'...
  43
  44         static protected BasicSupportHelper bsHelper = new BasicSupportHelper();
  45         static protected BasicSupportImages bsImages = new BasicSupportImages();
  46         static protected BasicSupportPara bsPara = new BasicSupportPara(new BasicSupportHelper(), new BasicSupportImages());
  47
  48         /**
  49          * Check if the given resource is supported by this {@link BasicSupport}.
  50          *
  51          * @param url
  52          *            the resource to check for
  53          *
  54          * @return TRUE if it is
  55          */
  56         protected abstract boolean supports(URL url);
  57
  58         /**
  59          * Return TRUE if the support will return HTML encoded content values for
  60          * the chapters content.
  61          *
  62          * @return TRUE for HTML
  63          */
  64         protected abstract boolean isHtml();
  65
  66         /**
  67          * Return the {@link MetaData} of this story.
  68          *
  69          * @return the associated {@link MetaData}, never NULL
  70          *
  71          * @throws IOException
  72          *             in case of I/O error
  73          */
  74         protected abstract MetaData getMeta() throws IOException;
  75
  76         /**
  77          * Return the story description.
  78          *
  79          * @return the description
  80          *
  81          * @throws IOException
  82          *             in case of I/O error
  83          */
  84         protected abstract String getDesc() throws IOException;
  85
  86         /**
  87          * Return the list of chapters (name and resource).
  88          * <p>
  89          * Can be NULL if this {@link BasicSupport} do no use chapters.
  90          *
  91          * @param pg
  92          *            the optional progress reporter
  93          *
  94          * @return the chapters or NULL
  95          *
  96          * @throws IOException
  97          *             in case of I/O error
  98          */
  99         protected abstract List<Entry<String, URL>> getChapters(Progress pg)
 100                         throws IOException;
 101
 102         /**
 103          * Return the content of the chapter (possibly HTML encoded, if
 104          * {@link BasicSupport#isHtml()} is TRUE).
 105          *
 106          * @param chapUrl
 107          *            the chapter {@link URL}
 108          * @param number
 109          *            the chapter number
 110          * @param pg
 111          *            the optional progress reporter
 112          *
 113          * @return the content
 114          *
 115          * @throws IOException
 116          *             in case of I/O error
 117          */
 118         protected abstract String getChapterContent(URL chapUrl, int number,
 119                         Progress pg) throws IOException;
 120
 121         /**
 122          * Return the list of cookies (values included) that must be used to
 123          * correctly fetch the resources.
 124          * <p>
 125          * You are expected to call the super method implementation if you override
 126          * it.
 127          *
 128          * @return the cookies
 129          */
 130         public Map<String, String> getCookies() {
 131                 return new HashMap<String, String>();
 132         }
 133
 134         /**
 135          * OAuth authorisation (aka, "bearer XXXXXXX").
 136          *
 137          * @return the OAuth string
 138          */
 139         public String getOAuth() {
 140                 return null;
 141         }
 142
 143         /**
 144          * Return the canonical form of the main {@link URL}.
 145          *
 146          * @param source
 147          *            the source {@link URL}, which can be NULL
 148          *
 149          * @return the canonical form of this {@link URL} or NULL if the source was
 150          *         NULL
 151          */
 152         protected URL getCanonicalUrl(URL source) {
 153                 return source;
 154         }
 155
 156         /**
 157          * The main {@link Node} for this {@link Story}.
 158          *
 159          * @return the node
 160          */
 161         protected Element getSourceNode() {
 162                 return sourceNode;
 163         }
 164
 165         /**
 166          * The main {@link URL} for this {@link Story}.
 167          *
 168          * @return the URL
 169          */
 170         protected URL getSource() {
 171                 return source;
 172         }
 173
 174         /**
 175          * The current referer {@link URL} (only one 'r', as in 'HTML'...), i.e.,
 176          * the current {@link URL} we work on.
 177          *
 178          * @return the referer
 179          */
 180         public URL getCurrentReferer() {
 181                 return currentReferer;
 182         }
 183
 184         /**
 185          * The current referer {@link URL} (only one 'r', as in 'HTML'...), i.e.,
 186          * the current {@link URL} we work on.
 187          *
 188          * @param currentReferer
 189          *            the new referer
 190          */
 191         protected void setCurrentReferer(URL currentReferer) {
 192                 this.currentReferer = currentReferer;
 193         }
 194
 195         /**
 196          * The support type.
 197          *
 198          * @return the type
 199          */
 200         public SupportType getType() {
 201                 return type;
 202         }
 203
 204         /**
 205          * The support type.
 206          *
 207          * @param type
 208          *            the new type
 209          */
 210         protected void setType(SupportType type) {
 211                 this.type = type;
 212         }
 213
 214         /**
 215          * Open an input link that will be used for the support.
 216          * <p>
 217          * Can return NULL, in which case you are supposed to work without a source
 218          * node.
 219          *
 220          * @param source
 221          *            the source {@link URL}
 222          *
 223          * @return the {@link InputStream}
 224          *
 225          * @throws IOException
 226          *             in case of I/O error
 227          */
 228         protected Document loadDocument(URL source) throws IOException {
 229                 String url = getCanonicalUrl(source).toString();
 230                 return DataUtil.load(Instance.getInstance().getCache().open(source, this, false), "UTF-8", url.toString());
 231         }
 232
 233         /**
 234          * Log into the support (can be a no-op depending upon the support).
 235          *
 236          * @throws IOException
 237          *             in case of I/O error
 238          */
 239         protected void login() throws IOException {
 240         }
 241
 242         /**
 243          * Now that we have processed the {@link Story}, close the resources if any.
 244          */
 245         protected void close() {
 246                 setCurrentReferer(null);
 247         }
 248
 249         /**
 250          * Process the given story resource into a partially filled {@link Story}
 251          * object containing the name and metadata.
 252          *
 253          * @param getDesc
 254          *            retrieve the description of the story, or not
 255          * @param pg
 256          *            the optional progress reporter
 257          *
 258          * @return the {@link Story}, never NULL
 259          *
 260          * @throws IOException
 261          *             in case of I/O error
 262          */
 263         protected Story processMeta(boolean getDesc, Progress pg)
 264                         throws IOException {
 265                 if (pg == null) {
 266                         pg = new Progress();
 267                 } else {
 268                         pg.setMinMax(0, 100);
 269                 }
 270
 271                 pg.setProgress(30);
 272
 273                 Story story = new Story();
 274                 MetaData meta = getMeta();
 275                 if (meta.getCreationDate() == null || meta.getCreationDate().isEmpty()) {
 276                         meta.setCreationDate(StringUtils.fromTime(new Date().getTime()));
 277                 }
 278                 story.setMeta(meta);
 279                 pg.put("meta", meta);
 280
 281                 pg.setProgress(50);
 282
 283                 if (meta.getCover() == null) {
 284                         meta.setCover(bsHelper.getDefaultCover(meta.getSubject()));
 285                 }
 286
 287                 pg.setProgress(60);
 288
 289                 if (getDesc) {
 290                         String descChapterName = Instance.getInstance().getTrans().getString(StringId.DESCRIPTION);
 291                         story.getMeta().setResume(bsPara.makeChapter(this, source, 0, descChapterName, //
 292                                         getDesc(), isHtml(), null));
 293                 }
 294
 295                 pg.done();
 296                 return story;
 297         }
 298
 299         /**
 300          * Utility method to convert the given URL into a JSON object.
 301          * <p>
 302          * Note that this method expects small JSON files (everything is copied into
 303          * memory at least twice).
 304          *
 305          * @param url
 306          *            the URL to parse
 307          * @param stable
 308          *            TRUE for more stable resources, FALSE when they often change
 309          *
 310          * @return the JSON object
 311          *
 312          * @throws IOException
 313          *             in case of I/O error
 314          */
 315         protected JSONObject getJson(String url, boolean stable)
 316                         throws IOException {
 317                 try {
 318                         return getJson(new URL(url), stable);
 319                 } catch (MalformedURLException e) {
 320                         throw new IOException("Malformed URL: " + url, e);
 321                 }
 322         }
 323
 324         /**
 325          * Utility method to convert the given URL into a JSON object.
 326          * <p>
 327          * Note that this method expects small JSON files (everything is copied into
 328          * memory at least twice).
 329          *
 330          * @param url
 331          *            the URL to parse
 332          * @param stable
 333          *            TRUE for more stable resources, FALSE when they often change
 334          *
 335          * @return the JSON object
 336          *
 337          * @throws IOException
 338          *             in case of I/O error
 339          */
 340         protected JSONObject getJson(URL url, boolean stable) throws IOException {
 341                 InputStream in = Instance.getInstance().getCache().open(url, null,
 342                                 stable);
 343                 try {
 344                         Scanner scan = new Scanner(in);
 345                         scan.useDelimiter("\0");
 346                         try {
 347                                 return new JSONObject(scan.next());
 348                         } finally {
 349                                 scan.close();
 350                         }
 351                 } finally {
 352                         in.close();
 353                 }
 354         }
 355
 356         /**
 357          * Process the given story resource into a fully filled {@link Story}
 358          * object.
 359          *
 360          * @param pg
 361          *            the optional progress reporter
 362          *
 363          * @return the {@link Story}, never NULL
 364          *
 365          * @throws IOException
 366          *             in case of I/O error
 367          */
 368         // TODO: ADD final when BasicSupport_Deprecated is gone
 369         public Story process(Progress pg) throws IOException {
 370                 setCurrentReferer(source);
 371                 login();
 372                 sourceNode = loadDocument(source);
 373
 374                 try {
 375                         return doProcess(pg);
 376                 } finally {
 377                         close();
 378                 }
 379         }
 380
 381         /**
 382          * Actual processing step, without the calls to other methods.
 383          * <p>
 384          * Will convert the story resource into a fully filled {@link Story} object.
 385          *
 386          * @param pg
 387          *            the optional progress reporter
 388          *
 389          * @return the {@link Story}, never NULL
 390          *
 391          * @throws IOException
 392          *             in case of I/O error
 393          */
 394         protected Story doProcess(Progress pg) throws IOException {
 395                 if (pg == null) {
 396                         pg = new Progress();
 397                 } else {
 398                         pg.setMinMax(0, 100);
 399                 }
 400
 401                 pg.setName("Initialising");
 402
 403                 pg.setProgress(1);
 404                 Progress pgMeta = new Progress();
 405                 pg.addProgress(pgMeta, 10);
 406                 Story story = processMeta(true, pgMeta);
 407                 pgMeta.done(); // 10%
 408                 pg.put("meta", story.getMeta());
 409
 410                 Progress pgGetChapters = new Progress();
 411                 pg.addProgress(pgGetChapters, 10);
 412                 story.setChapters(new ArrayList<Chapter>());
 413                 List<Entry<String, URL>> chapters = getChapters(pgGetChapters);
 414                 pgGetChapters.done(); // 20%
 415
 416                 if (chapters != null) {
 417                         Progress pgChaps = new Progress("Extracting chapters", 0,
 418                                         chapters.size() * 300);
 419                         pg.addProgress(pgChaps, 80);
 420
 421                         long words = 0;
 422                         int i = 1;
 423                         for (Entry<String, URL> chap : chapters) {
 424                                 pgChaps.setName("Extracting chapter " + i);
 425                                 URL chapUrl = chap.getValue();
 426                                 String chapName = chap.getKey();
 427                                 if (chapUrl != null) {
 428                                         setCurrentReferer(chapUrl);
 429                                 }
 430
 431                                 pgChaps.setProgress(i * 100);
 432                                 Progress pgGetChapterContent = new Progress();
 433                                 Progress pgMakeChapter = new Progress();
 434                                 pgChaps.addProgress(pgGetChapterContent, 100);
 435                                 pgChaps.addProgress(pgMakeChapter, 100);
 436
 437                                 String content = getChapterContent(chapUrl, i,
 438                                                 pgGetChapterContent);
 439                                 pgGetChapterContent.done();
 440                                 Chapter cc = bsPara.makeChapter(this, chapUrl, i,
 441                                                 chapName, content, isHtml(), pgMakeChapter);
 442                                 pgMakeChapter.done();
 443
 444                                 words += cc.getWords();
 445                                 story.getChapters().add(cc);
 446                                 story.getMeta().setWords(words);
 447
 448                                 i++;
 449                         }
 450
 451                         pgChaps.setName("Extracting chapters");
 452                         pgChaps.done();
 453                 }
 454
 455                 pg.done();
 456
 457                 return story;
 458         }
 459
 460         /**
 461          * Create a chapter from the given data.
 462          *
 463          * @param source
 464          *            the source URL for this content, which can be used to try and
 465          *            find images if images are present in the format [image-url]
 466          * @param number
 467          *            the chapter number (0 = description)
 468          * @param name
 469          *            the chapter name
 470          * @param content
 471          *            the content of the chapter
 472          * @return the {@link Chapter}
 473          *
 474          * @throws IOException
 475          *             in case of I/O error
 476          */
 477         public Chapter makeChapter(URL source, int number, String name,
 478                         String content) throws IOException {
 479                 return bsPara.makeChapter(this, source, number, name,
 480                                 content, isHtml(), null);
 481         }
 482
 483         /**
 484          * Return a {@link BasicSupport} implementation supporting the given
 485          * resource if possible.
 486          *
 487          * @param url
 488          *            the story resource
 489          *
 490          * @return an implementation that supports it, or NULL
 491          */
 492         public static BasicSupport getSupport(URL url) {
 493                 if (url == null) {
 494                         return null;
 495                 }
 496
 497                 // TEXT and INFO_TEXT always support files (not URLs though)
 498                 for (SupportType type : SupportType.values()) {
 499                         if (type != SupportType.TEXT && type != SupportType.INFO_TEXT) {
 500                                 BasicSupport support = getSupport(type, url);
 501                                 if (support != null && support.supports(url)) {
 502                                         return support;
 503                                 }
 504                         }
 505                 }
 506
 507                 for (SupportType type : new SupportType[] { SupportType.INFO_TEXT,
 508                                 SupportType.TEXT }) {
 509                         BasicSupport support = getSupport(type, url);
 510                         if (support != null && support.supports(url)) {
 511                                 return support;
 512                         }
 513                 }
 514
 515                 return null;
 516         }
 517
 518         /**
 519          * Return a {@link BasicSupport} implementation supporting the given type.
 520          *
 521          * @param type
 522          *            the type, must not be NULL
 523          * @param url
 524          *            the {@link URL} to support (can be NULL to get an
 525          *            "abstract support"; if not NULL, will be used as the source
 526          *            URL)
 527          *
 528          * @return an implementation that supports it, or NULL
 529          */
 530         public static BasicSupport getSupport(SupportType type, URL url) {
 531                 BasicSupport support = null;
 532
 533                 switch (type) {
 534                 case EPUB:
 535                         support = new Epub();
 536                         break;
 537                 case INFO_TEXT:
 538                         support = new InfoText();
 539                         break;
 540                 case FIMFICTION:
 541                         try {
 542                                 // Can fail if no client key or NO in options
 543                                 support = new FimfictionApi();
 544                         } catch (IOException e) {
 545                                 support = new Fimfiction();
 546                         }
 547                         break;
 548                 case FANFICTION:
 549                         support = new Fanfiction();
 550                         break;
 551                 case TEXT:
 552                         support = new Text();
 553                         break;
 554                 case MANGAHUB:
 555                         support = new MangaHub();
 556                         break;
 557                 case E621:
 558                         support = new E621();
 559                         break;
 560                 case YIFFSTAR:
 561                         support = new YiffStar();
 562                         break;
 563                 case E_HENTAI:
 564                         support = new EHentai();
 565                         break;
 566                 case MANGA_LEL:
 567                         support = new MangaLel();
 568                         break;
 569                 case CBZ:
 570                         support = new Cbz();
 571                         break;
 572                 case HTML:
 573                         support = new Html();
 574                         break;
 575                 }
 576
 577                 if (support != null) {
 578                         support.setType(type);
 579                         support.source = support.getCanonicalUrl(url);
 580                 }
 581
 582                 return support;
 583         }
 584 }