Source Code Cross Referenced for HtmlTokenizer.java in  » Web-Mail » claros-intouch2-2.2-beta » org » htmlcleaner » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Web Mail » claros intouch2 2.2 beta » org.htmlcleaner 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*  Copyright (c) 2006-2007, Vladimir Nikic
002:            All rights reserved.
003:        	
004:            Redistribution and use of this software in source and binary forms, 
005:            with or without modification, are permitted provided that the following 
006:            conditions are met:
007:        	
008:         * Redistributions of source code must retain the above
009:              copyright notice, this list of conditions and the
010:              following disclaimer.
011:        	
012:         * Redistributions in binary form must reproduce the above
013:              copyright notice, this list of conditions and the
014:              following disclaimer in the documentation and/or other
015:              materials provided with the distribution.
016:        	
017:         * The name of HtmlCleaner may not be used to endorse or promote 
018:              products derived from this software without specific prior
019:              written permission.
020:
021:            THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
022:            AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
023:            IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
024:            ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
025:            LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
026:            CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
027:            SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
028:            INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
029:            CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
030:            ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
031:            POSSIBILITY OF SUCH DAMAGE.
032:        	
033:            You can contact Vladimir Nikic by sending e-mail to
034:            nikic_vladimir@yahoo.com. Please include the word "HtmlCleaner" in the
035:            subject line.
036:         */
037:
038:        package org.htmlcleaner;
039:
040:        import java.io.*;
041:        import java.util.*;
042:
043:        /**
044:         * Main HTML tokenizer.
045:         * <p>Its taks is to parse HTML and produce list of valid tokens:
046:         * open tag tokens, end tag tokens, contents (text) and comments.
047:         * As soon as new item is added to token list, cleaner is invoked
048:         * to clean current list at the end.</p>
049:         *
050:         * Created by: Vladimir Nikic.<br>
051:         * Date: November, 2006
052:
053:         */
054:        public class HtmlTokenizer {
055:
056:            private final static int WORKING_BUFFER_SIZE = 1024;
057:
058:            private final static String trChString = "\u0131\u0130\u015F\u015E\u011F\u011E\u00fd\u00dd\u00fe\u00de\u00f0\u00d0\u00E7\u00C7\u00FC\u00DC\u00F6\u00D6";
059:            private final static String unicode[] = { "&#305;", "&#304;",
060:                    "&#351;", "&#350;", "&#287;", "&#286;", "&#305;", "&#304;",
061:                    "&#351;", "&#350;", "&#287;", "&#286;", "&#231;", "&#199;",
062:                    "&#252;", "&#220;", "&#246;", "&#214;" };
063:
064:            private final static String dirtyChString = "\n\"&<>";
065:            private final static String cleanhtmlEntities[] = { "<br/>",
066:                    "&quot;", "&amp;", "&lt;", "&gt;" };
067:
068:            private final static String clickAttributes = "onblur$onchange$onclick$ondblclick$onfocus$onkeydown$onkeypress$onkeyup$onLoad$onmousedown$onmouseout$onmouseover$onmousemove$onmouseup$onselect$onunload";
069:
070:            private BufferedReader _reader;
071:            private char[] _working = new char[WORKING_BUFFER_SIZE];
072:
073:            private transient int _pos = 0;
074:            private transient int _len = -1;
075:
076:            private transient StringBuffer _saved = new StringBuffer(512);
077:
078:            private transient boolean _isLateForDoctype = false;
079:            private transient TagToken _currentTagToken = null;
080:            private transient List _tokenList = new ArrayList();
081:
082:            private boolean _asExpected = true;
083:
084:            private boolean _isScriptContext = false;
085:            private boolean _isStyleContext = false;
086:
087:            private boolean _isTextPlain = false;
088:
089:            private HtmlCleaner cleaner;
090:
091:            /**
092:             * Constructor - cretes instance of the parser with specified content.
093:             * @param cleaner
094:             * @throws IOException
095:             */
096:            public HtmlTokenizer(HtmlCleaner cleaner) throws IOException {
097:                this ._reader = new BufferedReader(cleaner.getReader());
098:                this .cleaner = cleaner;
099:            }
100:
101:            private void addToken(BaseToken token) {
102:                _tokenList.add(token);
103:                cleaner.makeTree(_tokenList, _tokenList.listIterator(_tokenList
104:                        .size() - 1));
105:            }
106:
107:            private void readIfNeeded(int neededChars) throws IOException {
108:                if (_len == -1 && _pos + neededChars >= WORKING_BUFFER_SIZE) {
109:                    int numToCopy = WORKING_BUFFER_SIZE - _pos;
110:                    System.arraycopy(_working, _pos, _working, 0, numToCopy);
111:                    _pos = 0;
112:                    int size = _reader.read(_working, numToCopy,
113:                            WORKING_BUFFER_SIZE - numToCopy);
114:
115:                    if (size < WORKING_BUFFER_SIZE - numToCopy) {
116:                        _len = (size == -1 && numToCopy == 0) ? 0 : size
117:                                + numToCopy;
118:                    } else if (size == -1) {
119:                        _len = numToCopy;
120:                    }
121:                }
122:            }
123:
124:            List getTokenList() {
125:                return this ._tokenList;
126:            }
127:
128:            private void go() throws IOException {
129:                _pos++;
130:                readIfNeeded(0);
131:            }
132:
133:            private void go(int step) throws IOException {
134:                _pos += step;
135:                readIfNeeded(step - 1);
136:            }
137:
138:            /**
139:             * Checks if content starts with specified value at the current position.
140:             * @param value
141:             * @return true if starts with specified value, false otherwise.
142:             * @throws IOException
143:             */
144:            private boolean startsWith(String value) throws IOException {
145:                int valueLen = value.length();
146:                readIfNeeded(valueLen);
147:                if (_len >= 0 && _pos + valueLen > _len) {
148:                    return false;
149:                }
150:
151:                for (int i = 0; i < valueLen; i++) {
152:                    char ch1 = Character.toLowerCase(value.charAt(i));
153:                    char ch2 = Character.toLowerCase(_working[_pos + i]);
154:                    if (ch1 != ch2) {
155:                        return false;
156:                    }
157:                }
158:
159:                return true;
160:            }
161:
162:            /**
163:             * Checks if character at specified position is whitespace.
164:             * @param position
165:             * @return true is whitespace, false otherwise.
166:             */
167:            private boolean isWhitespace(int position) {
168:                if (_len >= 0 && position >= _len) {
169:                    return false;
170:                }
171:
172:                return Character.isWhitespace(_working[position]);
173:            }
174:
175:            /**
176:             * Checks if character at current runtime position is whitespace.
177:             * @return true is whitespace, false otherwise.
178:             */
179:            private boolean isWhitespace() {
180:                return isWhitespace(_pos);
181:            }
182:
183:            /**
184:             * Checks if character at specified position is equal to specified char.
185:             * @param position
186:             * @param ch
187:             * @return true is equals, false otherwise.
188:             */
189:            private boolean isChar(int position, char ch) {
190:                if (_len >= 0 && position >= _len) {
191:                    return false;
192:                }
193:
194:                return Character.toLowerCase(ch) == Character
195:                        .toLowerCase(_working[position]);
196:            }
197:
198:            /**
199:             * Checks if character at current runtime position is equal to specified char.
200:             * @param ch
201:             * @return true is equal, false otherwise.
202:             */
203:            private boolean isChar(char ch) {
204:                return isChar(_pos, ch);
205:            }
206:
207:            /**
208:             * Checks if character at specified position can be identifier start.
209:             * @param position
210:             * @return true is may be identifier start, false otherwise.
211:             */
212:            private boolean isIdentifierStartChar(int position) {
213:                if (_len >= 0 && position >= _len) {
214:                    return false;
215:                }
216:
217:                char ch = _working[position];
218:                return Character.isUnicodeIdentifierStart(ch) || (':' == ch);
219:            }
220:
221:            /**
222:             * Checks if character at current runtime position can be identifier start.
223:             * @return true is may be identifier start, false otherwise.
224:             */
225:            private boolean isIdentifierStartChar() {
226:                return isIdentifierStartChar(_pos);
227:            }
228:
229:            /**
230:             * Checks if character at current runtime position can be identifier part.
231:             * @return true is may be identifier part, false otherwise.
232:             */
233:            private boolean isIdentifierChar() {
234:                if (_len >= 0 && _pos >= _len) {
235:                    return false;
236:                }
237:
238:                char ch = _working[_pos];
239:                return Character.isUnicodeIdentifierStart(ch)
240:                        || Character.isDigit(ch) || (':' == ch) || ('.' == ch)
241:                        || ('-' == ch);
242:            }
243:
244:            /**
245:             * Checks if end of the content is reached.
246:             */
247:            private boolean isAllRead() {
248:                return _len >= 0 && _pos >= _len;
249:            }
250:
251:            /**
252:             * Saves specified character to the temporary buffer.
253:             * @param ch
254:             */
255:            private void save(char ch) {
256:                int chPos;
257:                if (_isTextPlain) {
258:                    chPos = dirtyChString.indexOf(ch);
259:                    if (chPos > -1) {
260:                        _saved.append(cleanhtmlEntities[chPos]);
261:                        return;
262:                    }
263:                }
264:                chPos = trChString.indexOf(ch);
265:                if (chPos > -1)
266:                    _saved.append(unicode[chPos]);
267:                else
268:                    _saved.append(ch);
269:            }
270:
271:            /**
272:             * Saves character at current runtime position to the temporary buffer.
273:             */
274:            private void saveCurrent() {
275:                if (!isAllRead()) {
276:                    save(_working[_pos]);
277:                }
278:            }
279:
280:            /**
281:             * Saves specified number of characters at current runtime position to the temporary buffer.
282:             * @throws IOException
283:             */
284:            private void saveCurrent(int size) throws IOException {
285:                readIfNeeded(size);
286:                int pos = _pos;
287:                while (!isAllRead() && (size > 0)) {
288:                    save(_working[pos]);
289:                    pos++;
290:                    size--;
291:                }
292:            }
293:
294:            /**
295:             * Skips whitespaces at current position and moves foreward until
296:             * non-whitespace character is found or the end of content is reached.
297:             * @throws IOException
298:             */
299:            private void skipWhitespaces() throws IOException {
300:                while (!isAllRead() && isWhitespace()) {
301:                    saveCurrent();
302:                    go();
303:                }
304:            }
305:
306:            private void addSavedAsContent() {
307:                if (_saved.length() > 0) {
308:                    if (!_isScriptContext)
309:                        addToken(new ContentToken(_saved.toString()));
310:                    _saved.delete(0, _saved.length());
311:                }
312:            }
313:
314:            /**
315:             * Starts parsing HTML.
316:             * @throws IOException
317:             */
318:            void start(boolean isTextPlain) throws IOException {
319:                // initialize runtime values
320:                _isTextPlain = isTextPlain;
321:                _currentTagToken = null;
322:                _tokenList.clear();
323:                _asExpected = true;
324:                _isScriptContext = false;
325:                _isStyleContext = false;
326:                _isLateForDoctype = false;
327:
328:                this ._pos = WORKING_BUFFER_SIZE;
329:                readIfNeeded(0);
330:
331:                while (!isAllRead()) {
332:                    // resets all the runtime values
333:                    _saved.delete(0, _saved.length());
334:                    _currentTagToken = null;
335:                    _asExpected = true;
336:
337:                    // this is enough for making decision
338:                    readIfNeeded(10);
339:
340:                    if (isTextPlain) {
341:                        if (startsWith("http://") || startsWith("https://")
342:                                || startsWith("www.")) {
343:                            tagAnchorStart();
344:                        } else {
345:                            content();
346:                        }
347:                    } else if (_isScriptContext) {
348:                        if (startsWith("</script")
349:                                && (isWhitespace(_pos + 8) || isChar(_pos + 8,
350:                                        '>'))) {
351:                            tagEnd();
352:                        } else {
353:                            content();
354:                        }
355:                    } else if (_isStyleContext) {
356:                        if (startsWith("</style")
357:                                && (isWhitespace(_pos + 7) || isChar(_pos + 7,
358:                                        '>'))) {
359:                            tagEnd();
360:                        } else {
361:                            content();
362:                        }
363:                    } else {
364:                        if (startsWith("<!doctype")) {
365:                            if (!_isLateForDoctype) {
366:                                doctype();
367:                                _isLateForDoctype = true;
368:                            } else {
369:                                ignore();
370:                            }
371:                        } else if (startsWith("</")
372:                                && isIdentifierStartChar(_pos + 2)) {
373:                            _isLateForDoctype = true;
374:                            tagEnd();
375:                        } else if (startsWith("<!--")) {
376:                            comment();
377:                        } else if (startsWith("<")
378:                                && isIdentifierStartChar(_pos + 1)) {
379:                            _isLateForDoctype = true;
380:                            tagStart();
381:                        } else {
382:                            content();
383:                        }
384:                    }
385:                }
386:
387:                _reader.close();
388:            }
389:
390:            /**
391:             * Parses start of the tag.
392:             * It expects that current position is at the "<" after which
393:             * the tag's name follows.
394:             * @throws IOException
395:             */
396:            private void tagStart() throws IOException {
397:                saveCurrent();
398:                go();
399:
400:                if (isAllRead()) {
401:                    return;
402:                }
403:
404:                String tagName = identifier();
405:                _currentTagToken = new TagNode(tagName);
406:
407:                if (_asExpected) {
408:                    skipWhitespaces();
409:                    tagAttributes();
410:
411:                    String originalSource = _saved.toString();
412:                    if (isChar('>')) {
413:                        go();
414:                        if ("script".equalsIgnoreCase(tagName)) {
415:                            _isScriptContext = true;
416:                        } else if ("style".equalsIgnoreCase(tagName)) {
417:                            _isStyleContext = true;
418:                        } else if ("a".equalsIgnoreCase(tagName)
419:                                || "area".equalsIgnoreCase(tagName)) {
420:                            int pos = originalSource.toLowerCase(
421:                                    new Locale("en", "US")).indexOf("mailto:");
422:                            if (pos > 0) {
423:                                if (originalSource.length() > pos + 7) {
424:                                    char ch = originalSource.charAt(pos - 1);
425:                                    if (ch == '\'' || ch == '\"') {
426:                                        int posEnd = originalSource.indexOf(ch,
427:                                                pos + 7);
428:                                        if (posEnd > pos + 7)
429:                                            _currentTagToken
430:                                                    .addAttribute(
431:                                                            "href",
432:                                                            "javascript:parent.compose.fastEmail('"
433:                                                                    + originalSource
434:                                                                            .substring(
435:                                                                                    pos + 7,
436:                                                                                    posEnd)
437:                                                                    + "');");
438:                                    }
439:                                }
440:                            } else
441:                                _currentTagToken.addAttribute("target",
442:                                        "_blank");
443:                        }
444:                        originalSource += ">";
445:                    } else if (startsWith("/>")) {
446:                        go(2);
447:                        addToken(new EndTagToken(tagName));
448:                        originalSource += "/>";
449:                    }
450:
451:                    if (!_isScriptContext) {
452:                        addToken(_currentTagToken);
453:                        _currentTagToken.setOriginalSource(originalSource);
454:                    }
455:
456:                    _currentTagToken = null;
457:                } else {
458:                    addSavedAsContent();
459:                }
460:            }
461:
462:            /**
463:             * Parses start of the tag.
464:             * It expects that current position is at the "http://" or "www." after which
465:             * the tag's name follows.
466:             * @throws IOException
467:             */
468:            private void tagAnchorStart() throws IOException {
469:                while (!isAllRead() && !isWhitespace()) {
470:                    saveCurrent();
471:                    go();
472:                }
473:
474:                String href = _saved.toString();
475:                if (href.startsWith("www."))
476:                    href = "http://" + href;
477:
478:                TagNode anchorNode = new TagNode("A");
479:                anchorNode.addAttribute("href", href);
480:                anchorNode.addAttribute("target", "_blank");
481:
482:                addToken(anchorNode);
483:                addSavedAsContent();
484:                addToken(new EndTagToken("A"));
485:
486:                anchorNode = null;
487:
488:                skipWhitespaces();
489:                addSavedAsContent();
490:            }
491:
492:            /**
493:             * Parses start of the tag.
494:             * It expects that current position is at the "@" after which
495:             * the tag's name follows.
496:             * @throws IOException
497:             */
498:            private void tagMailStart() throws IOException {
499:                while (!isAllRead() && !isWhitespace() && !isChar('>')) {
500:                    saveCurrent();
501:                    go();
502:                }
503:
504:                TagNode anchorNode = new TagNode("A");
505:                anchorNode.addAttribute("href", "javascript:parent.fastEmail('"
506:                        + _saved.toString() + "');");
507:
508:                addToken(anchorNode);
509:                addSavedAsContent();
510:                addToken(new EndTagToken("A"));
511:
512:                anchorNode = null;
513:
514:                skipWhitespaces();
515:                addSavedAsContent();
516:            }
517:
518:            /**
519:             * Parses end of the tag.
520:             * It expects that current position is at the "<" after which
521:             * "/" and the tag's name follows.
522:             * @throws IOException
523:             */
524:            private void tagEnd() throws IOException {
525:                saveCurrent(2);
526:                go(2);
527:
528:                if (isAllRead()) {
529:                    return;
530:                }
531:
532:                String tagName = identifier();
533:                _currentTagToken = new EndTagToken(tagName);
534:
535:                if (_asExpected) {
536:                    skipWhitespaces();
537:                    tagAttributes();
538:
539:                    String originalSource = _saved.toString();
540:                    addToken(_currentTagToken);
541:
542:                    if (isChar('>')) {
543:                        go();
544:                        originalSource += ">";
545:                    }
546:
547:                    if ("script".equalsIgnoreCase(tagName)) {
548:                        _isScriptContext = false;
549:                    } else if ("style".equalsIgnoreCase(tagName)) {
550:                        _isStyleContext = false;
551:                    }
552:
553:                    _currentTagToken.setOriginalSource(originalSource);
554:                    _currentTagToken = null;
555:                } else {
556:                    addSavedAsContent();
557:                }
558:            }
559:
560:            /**
561:             * Parses an identifier from the current position.
562:             * @throws IOException
563:             */
564:            private String identifier() throws IOException {
565:                _asExpected = true;
566:
567:                if (!isIdentifierStartChar()) {
568:                    _asExpected = false;
569:                    return null;
570:                }
571:
572:                StringBuffer tagName = new StringBuffer(16);
573:
574:                while (!isAllRead() && isIdentifierChar()) {
575:                    saveCurrent();
576:                    tagName.append(_working[_pos]);
577:                    go();
578:                }
579:
580:                return tagName.toString();
581:            }
582:
583:            /**
584:             * Parses list tag attributes from the current position.
585:             * @throws IOException
586:             */
587:            private void tagAttributes() throws IOException {
588:                while (!isAllRead() && _asExpected && !isChar('>')
589:                        && !startsWith("/>")) {
590:                    skipWhitespaces();
591:                    String attName = identifier();
592:
593:                    if (!_asExpected) {
594:                        if (!isChar('<') && !isChar('>') && !startsWith("/>")) {
595:                            saveCurrent();
596:                            go();
597:                        }
598:
599:                        if (!isChar('<')) {
600:                            _asExpected = true;
601:                        }
602:
603:                        continue;
604:                    }
605:
606:                    String attValue = attName;
607:
608:                    skipWhitespaces();
609:                    if (isChar('=')) {
610:                        saveCurrent();
611:                        go();
612:                        attValue = attributeValue();
613:                    }
614:
615:                    if (-1 != clickAttributes.indexOf(attName
616:                            .toLowerCase(new Locale("en", "US"))))
617:                        attValue = "return false;";
618:                    if (_asExpected) {
619:                        _currentTagToken.addAttribute(attName, attValue);
620:                    }
621:                }
622:            }
623:
624:            /**
625:             * Parses a single tag attribute - it is expected to be in one of the forms:
626:             * 		name=value
627:             * 		name="value"
628:             * 		name='value'
629:             * 		name
630:             * @throws IOException
631:             */
632:            private String attributeValue() throws IOException {
633:                skipWhitespaces();
634:
635:                if (isChar('<') || isChar('>') || startsWith("/>")) {
636:                    return "";
637:                }
638:
639:                boolean isQuoteMode = false;
640:                boolean isAposMode = false;
641:
642:                StringBuffer result = new StringBuffer();
643:
644:                if (isChar('\'')) {
645:                    isAposMode = true;
646:                    saveCurrent();
647:                    go();
648:                } else if (isChar('\"')) {
649:                    isQuoteMode = true;
650:                    saveCurrent();
651:                    go();
652:                }
653:
654:                while (!isAllRead()
655:                        && ((isAposMode && !isChar('\''))
656:                                || (isQuoteMode && !isChar('\"')) || (!isAposMode
657:                                && !isQuoteMode
658:                                && !isWhitespace()
659:                                && !isChar('>') && !startsWith("/>")))) {
660:                    result.append(_working[_pos]);
661:                    saveCurrent();
662:                    go();
663:                }
664:
665:                if (isChar('\'') && isAposMode) {
666:                    saveCurrent();
667:                    go();
668:                } else if (isChar('\"') && isQuoteMode) {
669:                    saveCurrent();
670:                    go();
671:                }
672:
673:                return result.toString();
674:            }
675:
676:            private void content() throws IOException {
677:                while (!isAllRead()) {
678:                    saveCurrent();
679:                    go();
680:
681:                    if (_isTextPlain) {
682:                        if (isWhitespace()) {
683:                            skipWhitespaces();
684:                            break;
685:                        } else if (isChar('<')) {
686:                            saveCurrent();
687:                            go();
688:                            break;
689:                        } else if (_working[_pos] == '@') {
690:                            tagMailStart();
691:                            return;
692:                        }
693:                    } else {
694:                        if (isChar('<'))
695:                            break;
696:                    }
697:                }
698:
699:                addSavedAsContent();
700:            }
701:
702:            private void ignore() throws IOException {
703:                while (!isAllRead()) {
704:                    go();
705:                    if (isChar('<')) {
706:                        break;
707:                    }
708:                }
709:            }
710:
711:            private void comment() throws IOException {
712:                go(4);
713:                while (!isAllRead() && !startsWith("-->")) {
714:                    saveCurrent();
715:                    go();
716:                }
717:
718:                if (startsWith("-->")) {
719:                    go(3);
720:                }
721:
722:                if (_saved.length() > 0) {
723:                    if (!cleaner.isOmitComments()) {
724:                        String hyphenRepl = cleaner
725:                                .getHyphenReplacementInComment();
726:                        String comment = _saved.toString().replaceAll("--",
727:                                hyphenRepl + hyphenRepl);
728:
729:                        if (comment.length() > 0 && comment.charAt(0) == '-') {
730:                            comment = hyphenRepl + comment.substring(1);
731:                        }
732:                        int len = comment.length();
733:                        if (len > 0 && comment.charAt(len - 1) == '-') {
734:                            comment = comment.substring(0, len - 1)
735:                                    + hyphenRepl;
736:                        }
737:
738:                        addToken(new CommentToken(comment));
739:                    }
740:                    _saved.delete(0, _saved.length());
741:                }
742:            }
743:
744:            private void doctype() throws IOException {
745:                go(9);
746:
747:                skipWhitespaces();
748:                String part1 = identifier();
749:                skipWhitespaces();
750:                String part2 = identifier();
751:                skipWhitespaces();
752:                String part3 = attributeValue();
753:                skipWhitespaces();
754:                String part4 = attributeValue();
755:
756:                ignore();
757:
758:                DoctypeToken _docType = new DoctypeToken(part1, part2, part3,
759:                        part4);
760:
761:                if (_docType.isValid()) {
762:                    cleaner.setDoctype(_docType);
763:                }
764:            }
765:
766:        }
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