| 1 | package be.nikiroo.gofetch.support; |
| 2 | |
| 3 | import java.io.IOException; |
| 4 | import java.io.InputStream; |
| 5 | import java.net.URL; |
| 6 | import java.text.ParseException; |
| 7 | import java.text.SimpleDateFormat; |
| 8 | import java.util.ArrayList; |
| 9 | import java.util.Arrays; |
| 10 | import java.util.Date; |
| 11 | import java.util.HashMap; |
| 12 | import java.util.List; |
| 13 | import java.util.Map; |
| 14 | import java.util.Map.Entry; |
| 15 | |
| 16 | import org.jsoup.helper.DataUtil; |
| 17 | import org.jsoup.helper.StringUtil; |
| 18 | import org.jsoup.nodes.Document; |
| 19 | import org.jsoup.nodes.Element; |
| 20 | import org.jsoup.nodes.Node; |
| 21 | import org.jsoup.nodes.TextNode; |
| 22 | import org.jsoup.select.NodeTraversor; |
| 23 | import org.jsoup.select.NodeVisitor; |
| 24 | |
| 25 | import be.nikiroo.gofetch.data.Comment; |
| 26 | import be.nikiroo.gofetch.data.Story; |
| 27 | import be.nikiroo.utils.Downloader; |
| 28 | import be.nikiroo.utils.StringUtils; |
| 29 | |
| 30 | /** |
| 31 | * Base class for website support. |
| 32 | * |
| 33 | * @author niki |
| 34 | */ |
| 35 | public abstract class BasicSupport { |
| 36 | /** |
| 37 | * The downloader to use for all web sites via |
| 38 | * {@link BasicSupport#open(URL)} |
| 39 | */ |
| 40 | static private Downloader downloader = new Downloader("gofetcher"); |
| 41 | |
| 42 | static private String preselector; |
| 43 | |
| 44 | /** |
| 45 | * The optional cookies to use to get the site data. |
| 46 | */ |
| 47 | private Map<String, String> cookies = new HashMap<String, String>(); |
| 48 | |
| 49 | private Type type; |
| 50 | |
| 51 | /** |
| 52 | * Login on the web site (this method does nothing by default, but can be |
| 53 | * overridden if needed). |
| 54 | * |
| 55 | * @throws IOException |
| 56 | * in case of I/O error |
| 57 | * |
| 58 | */ |
| 59 | public void login() throws IOException { |
| 60 | } |
| 61 | |
| 62 | /** |
| 63 | * The website textual description, to add in the dispatcher page. |
| 64 | * <p> |
| 65 | * Should be short. |
| 66 | * |
| 67 | * @return the description |
| 68 | */ |
| 69 | abstract public String getDescription(); |
| 70 | |
| 71 | /** |
| 72 | * The gopher "selector" to use for output. |
| 73 | * <p> |
| 74 | * A kind of "URL path", like "/news/" or "/misc/news/" or... |
| 75 | * |
| 76 | * @return the selector |
| 77 | */ |
| 78 | public String getSelector() { |
| 79 | return getSelector(getType()); |
| 80 | } |
| 81 | |
| 82 | /** |
| 83 | * The support type. |
| 84 | * |
| 85 | * @return the type |
| 86 | */ |
| 87 | public Type getType() { |
| 88 | return type; |
| 89 | } |
| 90 | |
| 91 | /** |
| 92 | * List all the recent items, but only assure the ID and internal URL to |
| 93 | * fetch it later on (until it has been fetched, the rest of the |
| 94 | * {@link Story} is not confirmed). |
| 95 | * |
| 96 | * @return the list of new stories |
| 97 | * |
| 98 | * @throws IOException |
| 99 | * in case of I/O |
| 100 | */ |
| 101 | public List<Story> list() throws IOException { |
| 102 | List<Story> list = new ArrayList<Story>(); |
| 103 | |
| 104 | login(); |
| 105 | for (Entry<URL, String> entry : getUrls()) { |
| 106 | URL url = entry.getKey(); |
| 107 | String defaultCateg = entry.getValue(); |
| 108 | if (defaultCateg == null) { |
| 109 | defaultCateg = ""; |
| 110 | } |
| 111 | |
| 112 | InputStream in = open(url); |
| 113 | Document doc = DataUtil.load(in, "UTF-8", url.toString()); |
| 114 | List<Element> articles = getArticles(doc); |
| 115 | for (Element article : articles) { |
| 116 | String id = getArticleId(doc, article).trim(); |
| 117 | String title = getArticleTitle(doc, article).trim(); |
| 118 | String author = getArticleAuthor(doc, article).trim(); |
| 119 | String date = getArticleDate(doc, article).trim(); |
| 120 | String categ = getArticleCategory(doc, article, defaultCateg) |
| 121 | .trim(); |
| 122 | String details = getArticleDetails(doc, article).trim(); |
| 123 | String intUrl = getArticleIntUrl(doc, article).trim(); |
| 124 | String extUrl = getArticleExtUrl(doc, article).trim(); |
| 125 | String content = getArticleContent(doc, article).trim(); |
| 126 | |
| 127 | if (id.isEmpty() && date.isEmpty()) { |
| 128 | continue; |
| 129 | } |
| 130 | |
| 131 | if (!id.isEmpty()) { |
| 132 | while (id.length() < 10) { |
| 133 | id = "0" + id; |
| 134 | } |
| 135 | } else { |
| 136 | id = date.replace(":", "_").replace("+", "_").replace("/", "-"); |
| 137 | } |
| 138 | |
| 139 | date = date(date); |
| 140 | |
| 141 | list.add(new Story(getType(), id, title, author, date, categ, |
| 142 | details, intUrl, extUrl, content)); |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | return list; |
| 147 | } |
| 148 | |
| 149 | /** |
| 150 | * The {@link URL}s to process for this website. |
| 151 | * |
| 152 | * @return the list of {@link URL}s |
| 153 | * |
| 154 | * @throws IOException |
| 155 | * in case of I/O error |
| 156 | */ |
| 157 | abstract protected List<Entry<URL, String>> getUrls() throws IOException; |
| 158 | |
| 159 | /** |
| 160 | * The article {@link Element}s of this document. |
| 161 | * |
| 162 | * @param doc |
| 163 | * the main document for the current category |
| 164 | * |
| 165 | * @return the articles |
| 166 | */ |
| 167 | abstract protected List<Element> getArticles(Document doc); |
| 168 | |
| 169 | /** |
| 170 | * The ID of the article (defaults to the date element if empty). |
| 171 | * |
| 172 | * @param doc |
| 173 | * the main document for the current category |
| 174 | * @param article |
| 175 | * the article to look into |
| 176 | * |
| 177 | * @return the ID |
| 178 | */ |
| 179 | abstract protected String getArticleId(Document doc, Element article); |
| 180 | |
| 181 | /** |
| 182 | * The article title to display. |
| 183 | * |
| 184 | * @param doc |
| 185 | * the main document for the current category |
| 186 | * @param article |
| 187 | * the article to look into |
| 188 | * |
| 189 | * @return the title |
| 190 | */ |
| 191 | abstract protected String getArticleTitle(Document doc, Element article); |
| 192 | |
| 193 | /** |
| 194 | * The optional article author. |
| 195 | * |
| 196 | * @param doc |
| 197 | * the main document for the current category |
| 198 | * @param article |
| 199 | * the article to look into |
| 200 | * |
| 201 | * @return the author |
| 202 | */ |
| 203 | abstract protected String getArticleAuthor(Document doc, Element article); |
| 204 | |
| 205 | /** |
| 206 | * The optional article date. |
| 207 | * |
| 208 | * @param doc |
| 209 | * the main document for the current category |
| 210 | * @param article |
| 211 | * the article to look into |
| 212 | * |
| 213 | * @return the date |
| 214 | */ |
| 215 | abstract protected String getArticleDate(Document doc, Element article); |
| 216 | |
| 217 | /** |
| 218 | * the optional article category. |
| 219 | * |
| 220 | * @param doc |
| 221 | * the main document for the current category |
| 222 | * @param article |
| 223 | * the article to look into |
| 224 | * @param currentCategory |
| 225 | * the currently listed category if any (can be NULL) |
| 226 | * |
| 227 | * @return the category |
| 228 | */ |
| 229 | abstract protected String getArticleCategory(Document doc, Element article, |
| 230 | String currentCategory); |
| 231 | |
| 232 | /** |
| 233 | * the optional details of the article (can replace the date, author and |
| 234 | * category, for instance). |
| 235 | * |
| 236 | * @param doc |
| 237 | * the main document for the current category |
| 238 | * @param article |
| 239 | * the article to look into |
| 240 | * |
| 241 | * @return the details |
| 242 | */ |
| 243 | abstract protected String getArticleDetails(Document doc, Element article); |
| 244 | |
| 245 | /** |
| 246 | * The (required) {@link URL} that points to the news page on the supported |
| 247 | * website. |
| 248 | * |
| 249 | * @param doc |
| 250 | * the main document for the current category |
| 251 | * @param article |
| 252 | * the article to look into |
| 253 | * |
| 254 | * @return the internal {@link URL} |
| 255 | */ |
| 256 | abstract protected String getArticleIntUrl(Document doc, Element article); |
| 257 | |
| 258 | /** |
| 259 | * the optional {@link URL} that points to an external website for more |
| 260 | * information. |
| 261 | * |
| 262 | * @param doc |
| 263 | * the main document for the current category |
| 264 | * @param article |
| 265 | * the article to look into |
| 266 | * |
| 267 | * @return the external {@link URL} |
| 268 | */ |
| 269 | abstract protected String getArticleExtUrl(Document doc, Element article); |
| 270 | |
| 271 | /** |
| 272 | * The optional article short-content (not the full content, that will be |
| 273 | * fetched by {@link BasicSupport#fetch(Story)}). |
| 274 | * |
| 275 | * @param doc |
| 276 | * the main document for the current category |
| 277 | * @param article |
| 278 | * the article to look into |
| 279 | * |
| 280 | * @return the short content |
| 281 | */ |
| 282 | abstract protected String getArticleContent(Document doc, Element article); |
| 283 | |
| 284 | /** |
| 285 | * Fetch the full article content as well as all the comments associated to |
| 286 | * this {@link Story}, if any (can be empty, but not NULL). |
| 287 | * |
| 288 | * @param story |
| 289 | * the story to fetch the comments of |
| 290 | * |
| 291 | * @throws IOException |
| 292 | * in case of I/O error |
| 293 | */ |
| 294 | public void fetch(Story story) throws IOException { |
| 295 | String fullContent = ""; |
| 296 | |
| 297 | URL url = new URL(story.getUrlInternal()); |
| 298 | InputStream in = open(url); |
| 299 | try { |
| 300 | Document doc = DataUtil.load(in, "UTF-8", url.toString()); |
| 301 | Element article = getFullArticle(doc); |
| 302 | if (article != null) { |
| 303 | fullContent = getArticleText(article); |
| 304 | } |
| 305 | |
| 306 | if (fullContent.isEmpty()) { |
| 307 | fullContent = story.getContent(); |
| 308 | } |
| 309 | |
| 310 | story.setFullContent(fullContent); |
| 311 | story.setComments(getComments(doc, |
| 312 | getFullArticleCommentPosts(doc, url))); |
| 313 | } finally { |
| 314 | if (in != null) { |
| 315 | in.close(); |
| 316 | } |
| 317 | } |
| 318 | } |
| 319 | |
| 320 | /** |
| 321 | * Return the text from this {@link Element}, using the |
| 322 | * {@link BasicSupport#getElementProcessorFullArticle()} processor logic. |
| 323 | * |
| 324 | * @param article |
| 325 | * the element to extract the text from |
| 326 | * |
| 327 | * @return the text |
| 328 | */ |
| 329 | protected String getArticleText(Element article) { |
| 330 | StringBuilder builder = new StringBuilder(); |
| 331 | ElementProcessor eProc = getElementProcessorFullArticle(); |
| 332 | if (eProc != null) { |
| 333 | for (String line : toLines(article, eProc)) { |
| 334 | builder.append(line + "\n"); |
| 335 | } |
| 336 | } else { |
| 337 | builder.append(article.text()); |
| 338 | } |
| 339 | |
| 340 | // Content is too tight with a single break per line: |
| 341 | return builder.toString().replace("\n", "\n\n") // |
| 342 | .replace("\n\n\n\n", "\n\n") // |
| 343 | .replace("\n\n\n\n", "\n\n") // |
| 344 | .trim(); |
| 345 | } |
| 346 | |
| 347 | /** |
| 348 | * Return the full article if available (this is the article to retrieve |
| 349 | * from the newly downloaded page at {@link Story#getUrlInternal()}). |
| 350 | * |
| 351 | * @param doc |
| 352 | * the (full article) document to work on |
| 353 | * |
| 354 | * @return the article or NULL |
| 355 | */ |
| 356 | abstract protected Element getFullArticle(Document doc); |
| 357 | |
| 358 | /** |
| 359 | * Return the list of comment {@link Element}s from this optional container |
| 360 | * -- must <b>NOT</b> return the "container" as a comment {@link Element}. |
| 361 | * |
| 362 | * @param doc |
| 363 | * the (full article) document to work on |
| 364 | * @param intUrl |
| 365 | * the internal {@link URL} this article wa taken from (the |
| 366 | * {@link URL} from the supported website) |
| 367 | * |
| 368 | * @return the list of comment posts |
| 369 | */ |
| 370 | abstract protected List<Element> getFullArticleCommentPosts(Document doc, |
| 371 | URL intUrl); |
| 372 | |
| 373 | /** |
| 374 | * The {@link ElementProcessor} to use to convert the main article element |
| 375 | * (see {@link BasicSupport#getFullArticle(Document)}) into text. |
| 376 | * <p> |
| 377 | * See {@link BasicElementProcessor} for a working, basic implementation. |
| 378 | * <p> |
| 379 | * Can be NULL to simply use {@link Element#text()}. |
| 380 | * |
| 381 | * @return the processor, or NULL |
| 382 | */ |
| 383 | abstract protected ElementProcessor getElementProcessorFullArticle(); |
| 384 | |
| 385 | /** |
| 386 | * Open a network resource. |
| 387 | * <p> |
| 388 | * You need to close the returned {@link InputStream} when done. |
| 389 | * |
| 390 | * @param url |
| 391 | * the source to open |
| 392 | * |
| 393 | * @return the content |
| 394 | * |
| 395 | * @throws IOException |
| 396 | * in case of I/O error |
| 397 | */ |
| 398 | protected InputStream open(URL url) throws IOException { |
| 399 | return downloader.open(url, url, cookies, null, null, null); |
| 400 | } |
| 401 | |
| 402 | /** |
| 403 | * Convert the comment elements into {@link Comment}s |
| 404 | * |
| 405 | * @param doc |
| 406 | * the document we work on |
| 407 | * @param posts |
| 408 | * the comment elements |
| 409 | * |
| 410 | * @return the converted {@link Comment}s |
| 411 | */ |
| 412 | private List<Comment> getComments(Document doc, List<Element> posts) { |
| 413 | List<Comment> comments = new ArrayList<Comment>(); |
| 414 | if (posts != null) { |
| 415 | for (Element post : posts) { |
| 416 | String id = getCommentId(post).trim(); |
| 417 | String author = getCommentAuthor(post).trim(); |
| 418 | String title = getCommentTitle(post).trim(); |
| 419 | String date = getCommentDate(post).trim(); |
| 420 | |
| 421 | List<String> content = new ArrayList<String>(); |
| 422 | |
| 423 | if (id.isEmpty()) { |
| 424 | id = date; |
| 425 | } |
| 426 | |
| 427 | date = date(date); |
| 428 | |
| 429 | Element contentE = getCommentContentElement(post); |
| 430 | if (contentE != null) { |
| 431 | ElementProcessor eProc = getElementProcessorComment(); |
| 432 | if (eProc != null) { |
| 433 | for (String line : toLines(contentE, eProc)) { |
| 434 | content.add(line); |
| 435 | } |
| 436 | } else { |
| 437 | content = Arrays.asList(contentE.text().split("\n")); |
| 438 | } |
| 439 | } |
| 440 | |
| 441 | Comment comment = new Comment(id, author, title, date, content); |
| 442 | comment.addAll(getComments(doc, |
| 443 | getCommentCommentPosts(doc, post))); |
| 444 | |
| 445 | if (!comment.isEmpty()) { |
| 446 | comments.add(comment); |
| 447 | } |
| 448 | } |
| 449 | } |
| 450 | |
| 451 | return comments; |
| 452 | } |
| 453 | |
| 454 | /** |
| 455 | * Return the list of subcomment {@link Element}s from this comment element |
| 456 | * -- must <b>NOT</b> return the "container" as a comment {@link Element}. |
| 457 | * |
| 458 | * @param doc |
| 459 | * the (full article) document to work on |
| 460 | * @param container |
| 461 | * the container (a comment {@link Element}) |
| 462 | * |
| 463 | * @return the list of comment posts |
| 464 | */ |
| 465 | abstract protected List<Element> getCommentCommentPosts(Document doc, |
| 466 | Element container); |
| 467 | |
| 468 | /** |
| 469 | * Compute the ID of the given comment element. |
| 470 | * |
| 471 | * @param post |
| 472 | * the comment element |
| 473 | * |
| 474 | * @return the ID |
| 475 | */ |
| 476 | abstract protected String getCommentId(Element post); |
| 477 | |
| 478 | /** |
| 479 | * Compute the author of the given comment element. |
| 480 | * |
| 481 | * @param post |
| 482 | * the comment element |
| 483 | * |
| 484 | * @return the author |
| 485 | */ |
| 486 | abstract protected String getCommentAuthor(Element post); |
| 487 | |
| 488 | /** |
| 489 | * Compute the title of the given comment element. |
| 490 | * |
| 491 | * @param post |
| 492 | * the comment element |
| 493 | * |
| 494 | * @return the title |
| 495 | */ |
| 496 | abstract protected String getCommentTitle(Element post); |
| 497 | |
| 498 | /** |
| 499 | * Compute the date of the given comment element. |
| 500 | * |
| 501 | * @param post |
| 502 | * the comment element |
| 503 | * |
| 504 | * @return the date |
| 505 | */ |
| 506 | abstract protected String getCommentDate(Element post); |
| 507 | |
| 508 | /** |
| 509 | * Get the main of the given comment element, which can be NULL. |
| 510 | * |
| 511 | * @param post |
| 512 | * the comment element |
| 513 | * |
| 514 | * @return the element |
| 515 | */ |
| 516 | abstract protected Element getCommentContentElement(Element post); |
| 517 | |
| 518 | /** |
| 519 | * The {@link ElementProcessor} to use to convert the main comment element |
| 520 | * (see {@link BasicSupport#getCommentContentElement(Element)}) into text. |
| 521 | * <p> |
| 522 | * See {@link BasicElementProcessor} for a working, basic implementation. |
| 523 | * <p> |
| 524 | * Can be NULL to simply use {@link Element#text()}. |
| 525 | * |
| 526 | * @return the processor |
| 527 | */ |
| 528 | abstract protected ElementProcessor getElementProcessorComment(); |
| 529 | |
| 530 | /** |
| 531 | * The support type. |
| 532 | * |
| 533 | * @param type |
| 534 | * the new type |
| 535 | */ |
| 536 | protected void setType(Type type) { |
| 537 | this.type = type; |
| 538 | } |
| 539 | |
| 540 | /** |
| 541 | * Add a cookie for all site connections. |
| 542 | * |
| 543 | * @param name |
| 544 | * the cookie name |
| 545 | * @param value |
| 546 | * the value |
| 547 | */ |
| 548 | protected void addCookie(String name, String value) { |
| 549 | cookies.put(name, value); |
| 550 | } |
| 551 | |
| 552 | /** |
| 553 | * The {@link String} to append to the selector (the selector will be |
| 554 | * constructed as "this string" then "/type/". |
| 555 | * |
| 556 | * @param preselector |
| 557 | * the preselector to set |
| 558 | */ |
| 559 | static public void setPreselector(String preselector) { |
| 560 | BasicSupport.preselector = preselector; |
| 561 | } |
| 562 | |
| 563 | /** |
| 564 | * Return a {@link BasicSupport} that is compatible with the given |
| 565 | * {@link Type} if it exists (or NULL if not). |
| 566 | * |
| 567 | * @param type |
| 568 | * the type |
| 569 | * |
| 570 | * @return a compatible {@link BasicSupport} if it exists (or NULL if not) |
| 571 | */ |
| 572 | static public BasicSupport getSupport(Type type) { |
| 573 | BasicSupport support = null; |
| 574 | |
| 575 | if (type != null) { |
| 576 | switch (type) { |
| 577 | case SLASHDOT: |
| 578 | support = new Slashdot(); |
| 579 | break; |
| 580 | case PIPEDOT: |
| 581 | support = new Pipedot(); |
| 582 | break; |
| 583 | case LWN: |
| 584 | support = new LWN(); |
| 585 | break; |
| 586 | case LEMONDE: |
| 587 | support = new LeMonde(); |
| 588 | break; |
| 589 | case REGISTER: |
| 590 | support = new TheRegister(); |
| 591 | break; |
| 592 | case TOO_LINUX: |
| 593 | support = new TooLinux(); |
| 594 | break; |
| 595 | case ERE_NUMERIQUE: |
| 596 | support = new EreNumerique(); |
| 597 | break; |
| 598 | case PHORONIX: |
| 599 | support = new Phoronix(); |
| 600 | break; |
| 601 | case SEPT_SUR_SEPT: |
| 602 | support = new SeptSurSept(); |
| 603 | break; |
| 604 | case REDDIT: |
| 605 | support = new Reddit(); |
| 606 | break; |
| 607 | } |
| 608 | |
| 609 | if (support != null) { |
| 610 | support.setType(type); |
| 611 | } |
| 612 | } |
| 613 | |
| 614 | return support; |
| 615 | } |
| 616 | |
| 617 | /** |
| 618 | * The gopher "selector" to use for output for this type, using the |
| 619 | * preselector. |
| 620 | * <p> |
| 621 | * A kind of "URL path", like "/news/" or "/misc/news/" or... |
| 622 | * |
| 623 | * @param type |
| 624 | * the type to get the selector of |
| 625 | * |
| 626 | * @return the selector |
| 627 | */ |
| 628 | static public String getSelector(Type type) { |
| 629 | return preselector + "/" + type + "/"; |
| 630 | } |
| 631 | |
| 632 | /** |
| 633 | * Process the given element into text (each line is a text paragraph and |
| 634 | * can be prepended with ">" signs to indicate a quote or sub-quote or |
| 635 | * sub-sub-quote...). |
| 636 | * |
| 637 | * @param element |
| 638 | * the element to process |
| 639 | * @param elementProcessor |
| 640 | * the element processor, must not be NULL |
| 641 | * |
| 642 | * @return text lines, each line is a paragraph |
| 643 | */ |
| 644 | static protected List<String> toLines(Element element, |
| 645 | final ElementProcessor elementProcessor) { |
| 646 | final List<String> lines = new ArrayList<String>(); |
| 647 | final StringBuilder currentLine = new StringBuilder(); |
| 648 | final List<Integer> quoted = new ArrayList<Integer>(); |
| 649 | final List<Node> ignoredNodes = new ArrayList<Node>(); |
| 650 | final List<String> footnotes = new ArrayList<String>(); |
| 651 | |
| 652 | if (element != null) { |
| 653 | new NodeTraversor(new NodeVisitor() { |
| 654 | @Override |
| 655 | public void head(Node node, int depth) { |
| 656 | String manual = null; |
| 657 | boolean ignore = elementProcessor.ignoreNode(node) |
| 658 | || ignoredNodes.contains(node.parentNode()); |
| 659 | // Manual processing |
| 660 | if (!ignore) { |
| 661 | manual = elementProcessor.manualProcessing(node); |
| 662 | if (manual != null) { |
| 663 | currentLine.append(manual); |
| 664 | ignore = true; |
| 665 | } |
| 666 | } |
| 667 | |
| 668 | // Subtitle check |
| 669 | if (!ignore) { |
| 670 | String subtitle = elementProcessor.isSubtitle(node); |
| 671 | if (subtitle != null) { |
| 672 | subtitle = subtitle.trim(); |
| 673 | currentLine.append("\n[ " + subtitle + " ]\n"); |
| 674 | ignore = true; |
| 675 | } |
| 676 | } |
| 677 | |
| 678 | // <pre> check |
| 679 | if (!ignore) { |
| 680 | if (node instanceof Element) { |
| 681 | Element el = (Element) node; |
| 682 | if ("pre".equals(el.tagName())) { |
| 683 | currentLine.append(StringUtils |
| 684 | .unhtml(el.text()).trim()); |
| 685 | ignore = true; |
| 686 | } |
| 687 | } |
| 688 | } |
| 689 | |
| 690 | if (ignore) { |
| 691 | ignoredNodes.add(node); |
| 692 | return; |
| 693 | } |
| 694 | |
| 695 | String prep = ""; |
| 696 | for (int i = 0; i < quoted.size(); i++) { |
| 697 | prep += ">"; |
| 698 | } |
| 699 | prep += " "; |
| 700 | |
| 701 | boolean enterQuote = elementProcessor.detectQuote(node); |
| 702 | boolean leaveQuote = quoted.contains(depth); |
| 703 | |
| 704 | if (enterQuote) { |
| 705 | quoted.add(depth); |
| 706 | } |
| 707 | |
| 708 | if (leaveQuote) { |
| 709 | quoted.remove(Integer.valueOf(depth)); |
| 710 | } |
| 711 | |
| 712 | if (enterQuote || leaveQuote) { |
| 713 | if (currentLine.length() > 0) { |
| 714 | if (currentLine.charAt(currentLine.length() - 1) == '\n') { |
| 715 | currentLine.setLength(currentLine.length() - 1); |
| 716 | } |
| 717 | for (String l : currentLine.toString().split("\n")) { |
| 718 | lines.add(prep + l); |
| 719 | } |
| 720 | } |
| 721 | currentLine.setLength(0); |
| 722 | } |
| 723 | |
| 724 | if (node instanceof Element) { |
| 725 | Element element = (Element) node; |
| 726 | boolean block = element.isBlock() |
| 727 | || element.tagName().equalsIgnoreCase("br"); |
| 728 | if (block && currentLine.length() > 0) { |
| 729 | currentLine.append("\n"); |
| 730 | } |
| 731 | |
| 732 | if (!element.absUrl("href").trim().isEmpty()) { |
| 733 | footnotes.add(element.absUrl("href")); |
| 734 | currentLine.append("[" + footnotes.size() + "]"); |
| 735 | } |
| 736 | } else if (node instanceof TextNode) { |
| 737 | TextNode textNode = (TextNode) node; |
| 738 | String line = StringUtil.normaliseWhitespace(textNode |
| 739 | .getWholeText()); |
| 740 | |
| 741 | currentLine.append(elementProcessor.processText(line)); |
| 742 | currentLine.append(" "); |
| 743 | } |
| 744 | } |
| 745 | |
| 746 | @Override |
| 747 | public void tail(Node node, int depth) { |
| 748 | } |
| 749 | }).traverse(element); |
| 750 | } |
| 751 | |
| 752 | if (currentLine.length() > 0) { |
| 753 | String prep = ""; |
| 754 | for (int i = 0; i < quoted.size(); i++) { |
| 755 | prep += ">"; |
| 756 | } |
| 757 | prep += " "; |
| 758 | if (currentLine.length() > 0) { |
| 759 | if (currentLine.charAt(currentLine.length() - 1) == '\n') { |
| 760 | currentLine.setLength(currentLine.length() - 1); |
| 761 | } |
| 762 | for (String l : currentLine.toString().split("\n")) { |
| 763 | lines.add(prep + l); |
| 764 | } |
| 765 | } |
| 766 | } |
| 767 | |
| 768 | // Fix spaces and nbsp, remove multiple following blank lines |
| 769 | List<String> linesCopy = new ArrayList<String>(lines.size()); |
| 770 | long blanks = 0; |
| 771 | for (int i = 0; i < lines.size(); i++) { |
| 772 | String line = lines.get(i).replace(" ", " ") // nbsp -> space |
| 773 | .replace(" ", " ").trim(); |
| 774 | if (line.isEmpty()) { |
| 775 | blanks++; |
| 776 | } else { |
| 777 | blanks = 0; |
| 778 | } |
| 779 | |
| 780 | if (blanks < 2) { |
| 781 | linesCopy.add(line); |
| 782 | } |
| 783 | } |
| 784 | |
| 785 | // Footnotes insertion |
| 786 | if (footnotes.size() > 0) { |
| 787 | linesCopy.add(""); |
| 788 | linesCopy.add(""); |
| 789 | linesCopy.add(""); |
| 790 | linesCopy.add(""); |
| 791 | for (int i = 0; i < footnotes.size(); i++) { |
| 792 | linesCopy.add("[" + (i + 1) + "] " + footnotes.get(i)); |
| 793 | } |
| 794 | } |
| 795 | |
| 796 | return linesCopy; |
| 797 | } |
| 798 | |
| 799 | /** |
| 800 | * Reformat the date if possible. |
| 801 | * |
| 802 | * @param date |
| 803 | * the input date |
| 804 | * |
| 805 | * @return the reformated date, or the same value if it was not parsable |
| 806 | */ |
| 807 | static private String date(String date) { |
| 808 | SimpleDateFormat out = new SimpleDateFormat("yyyy/MM/dd"); |
| 809 | |
| 810 | long epoch = 0; |
| 811 | try { |
| 812 | epoch = Long.parseLong(date.trim()); |
| 813 | } catch (Exception e) { |
| 814 | epoch = 0; |
| 815 | } |
| 816 | |
| 817 | if (epoch > 0) { |
| 818 | return out.format(new Date(1000 * epoch)); |
| 819 | } |
| 820 | |
| 821 | try { |
| 822 | Date dat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssXXX") |
| 823 | .parse(date.trim()); |
| 824 | return out.format(dat); |
| 825 | } catch (Exception e) { |
| 826 | return date; |
| 827 | } |
| 828 | } |
| 829 | } |