1 package org.apache.maven.doxia.module.fml;
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22 import java.io.IOException;
23 import java.io.Reader;
24 import java.io.StringReader;
25 import java.io.StringWriter;
26
27 import java.util.HashMap;
28 import java.util.Iterator;
29 import java.util.Map;
30 import java.util.Set;
31 import java.util.TreeSet;
32
33 import javax.swing.text.html.HTML.Attribute;
34
35 import org.apache.maven.doxia.macro.MacroExecutionException;
36 import org.apache.maven.doxia.macro.MacroRequest;
37 import org.apache.maven.doxia.macro.manager.MacroNotFoundException;
38 import org.apache.maven.doxia.module.fml.model.Faq;
39 import org.apache.maven.doxia.module.fml.model.Faqs;
40 import org.apache.maven.doxia.module.fml.model.Part;
41 import org.apache.maven.doxia.parser.AbstractXmlParser;
42 import org.apache.maven.doxia.parser.ParseException;
43 import org.apache.maven.doxia.parser.Parser;
44 import org.apache.maven.doxia.sink.Sink;
45 import org.apache.maven.doxia.sink.impl.SinkEventAttributeSet;
46 import org.apache.maven.doxia.sink.impl.XhtmlBaseSink;
47 import org.apache.maven.doxia.util.DoxiaUtils;
48 import org.apache.maven.doxia.util.HtmlTools;
49
50 import org.codehaus.plexus.component.annotations.Component;
51 import org.codehaus.plexus.util.IOUtil;
52 import org.codehaus.plexus.util.StringUtils;
53 import org.codehaus.plexus.util.xml.pull.XmlPullParser;
54 import org.codehaus.plexus.util.xml.pull.XmlPullParserException;
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63
64 @Component( role = Parser.class, hint = "fml" )
65 public class FmlParser
66 extends AbstractXmlParser
67 implements FmlMarkup
68 {
69
70 private Faqs faqs;
71
72
73 private Part currentPart;
74
75
76 private Faq currentFaq;
77
78
79 private StringBuilder buffer;
80
81
82
83 private Map<String, Set<String>> warnMessages;
84
85
86 private String sourceContent;
87
88
89 private String macroName;
90
91
92 private Map<String, Object> macroParameters = new HashMap<String, Object>();
93
94
95 public void parse( Reader source, Sink sink )
96 throws ParseException
97 {
98 this.faqs = null;
99 this.sourceContent = null;
100 init();
101
102 try
103 {
104 StringWriter contentWriter = new StringWriter();
105 IOUtil.copy( source, contentWriter );
106 sourceContent = contentWriter.toString();
107 }
108 catch ( IOException ex )
109 {
110 throw new ParseException( "Error reading the input source: " + ex.getMessage(), ex );
111 }
112 finally
113 {
114 IOUtil.close( source );
115 }
116
117 try
118 {
119 Reader tmp = new StringReader( sourceContent );
120
121 this.faqs = new Faqs();
122
123
124 super.parse( tmp, sink );
125
126 writeFaqs( sink );
127 }
128 finally
129 {
130 logWarnings();
131
132 this.faqs = null;
133 this.sourceContent = null;
134 setSecondParsing( false );
135 init();
136 }
137 }
138
139
140 protected void handleStartTag( XmlPullParser parser, Sink sink )
141 throws XmlPullParserException, MacroExecutionException
142 {
143 if ( parser.getName().equals( FAQS_TAG.toString() ) )
144 {
145 String title = parser.getAttributeValue( null, "title" );
146
147 if ( title != null )
148 {
149 faqs.setTitle( title );
150 }
151
152 String toplink = parser.getAttributeValue( null, "toplink" );
153
154 if ( toplink != null )
155 {
156 if ( toplink.equalsIgnoreCase( "true" ) )
157 {
158 faqs.setToplink( true );
159 }
160 else
161 {
162 faqs.setToplink( false );
163 }
164 }
165 }
166 else if ( parser.getName().equals( PART_TAG.toString() ) )
167 {
168 currentPart = new Part();
169
170 currentPart.setId( parser.getAttributeValue( null, Attribute.ID.toString() ) );
171
172 if ( currentPart.getId() == null )
173 {
174 throw new XmlPullParserException( "id attribute required for <part> at: ("
175 + parser.getLineNumber() + ":" + parser.getColumnNumber() + ")" );
176 }
177 else if ( !DoxiaUtils.isValidId( currentPart.getId() ) )
178 {
179 String linkAnchor = DoxiaUtils.encodeId( currentPart.getId(), true );
180
181 String msg = "Modified invalid link: '" + currentPart.getId() + "' to '" + linkAnchor + "'";
182 logMessage( "modifiedLink", msg );
183
184 currentPart.setId( linkAnchor );
185 }
186 }
187 else if ( parser.getName().equals( TITLE.toString() ) )
188 {
189 buffer = new StringBuilder();
190
191 buffer.append( String.valueOf( LESS_THAN ) ).append( parser.getName() )
192 .append( String.valueOf( GREATER_THAN ) );
193 }
194 else if ( parser.getName().equals( FAQ_TAG.toString() ) )
195 {
196 currentFaq = new Faq();
197
198 currentFaq.setId( parser.getAttributeValue( null, Attribute.ID.toString() ) );
199
200 if ( currentFaq.getId() == null )
201 {
202 throw new XmlPullParserException( "id attribute required for <faq> at: ("
203 + parser.getLineNumber() + ":" + parser.getColumnNumber() + ")" );
204 }
205 else if ( !DoxiaUtils.isValidId( currentFaq.getId() ) )
206 {
207 String linkAnchor = DoxiaUtils.encodeId( currentFaq.getId(), true );
208
209 String msg = "Modified invalid link: '" + currentFaq.getId() + "' to '" + linkAnchor + "'";
210 logMessage( "modifiedLink", msg );
211
212 currentFaq.setId( linkAnchor );
213 }
214 }
215 else if ( parser.getName().equals( QUESTION_TAG.toString() ) )
216 {
217 buffer = new StringBuilder();
218
219 buffer.append( String.valueOf( LESS_THAN ) ).append( parser.getName() )
220 .append( String.valueOf( GREATER_THAN ) );
221 }
222 else if ( parser.getName().equals( ANSWER_TAG.toString() ) )
223 {
224 buffer = new StringBuilder();
225
226 buffer.append( String.valueOf( LESS_THAN ) ).append( parser.getName() )
227 .append( String.valueOf( GREATER_THAN ) );
228
229 }
230
231
232
233
234
235 else if ( parser.getName().equals( MACRO_TAG.toString() ) )
236 {
237 handleMacroStart( parser );
238 }
239 else if ( parser.getName().equals( PARAM.toString() ) )
240 {
241 handleParamStart( parser, sink );
242 }
243 else if ( buffer != null )
244 {
245 buffer.append( String.valueOf( LESS_THAN ) ).append( parser.getName() );
246
247 int count = parser.getAttributeCount();
248
249 for ( int i = 0; i < count; i++ )
250 {
251 buffer.append( String.valueOf( SPACE ) ).append( parser.getAttributeName( i ) );
252
253 buffer.append( String.valueOf( EQUAL ) ).append( String.valueOf( QUOTE ) );
254
255
256 buffer.append( HtmlTools.escapeHTML( parser.getAttributeValue( i ) ) );
257
258 buffer.append( String.valueOf( QUOTE ) );
259 }
260
261 buffer.append( String.valueOf( GREATER_THAN ) );
262 }
263 }
264
265
266 protected void handleEndTag( XmlPullParser parser, Sink sink )
267 throws XmlPullParserException, MacroExecutionException
268 {
269 if ( parser.getName().equals( FAQS_TAG.toString() ) )
270 {
271
272 return;
273 }
274 else if ( parser.getName().equals( PART_TAG.toString() ) )
275 {
276 faqs.addPart( currentPart );
277
278 currentPart = null;
279 }
280 else if ( parser.getName().equals( FAQ_TAG.toString() ) )
281 {
282 if ( currentPart == null )
283 {
284 throw new XmlPullParserException( "Missing <part> at: ("
285 + parser.getLineNumber() + ":" + parser.getColumnNumber() + ")" );
286 }
287
288 currentPart.addFaq( currentFaq );
289
290 currentFaq = null;
291 }
292 else if ( parser.getName().equals( QUESTION_TAG.toString() ) )
293 {
294 if ( currentFaq == null )
295 {
296 throw new XmlPullParserException( "Missing <faq> at: ("
297 + parser.getLineNumber() + ":" + parser.getColumnNumber() + ")" );
298 }
299
300 buffer.append( String.valueOf( LESS_THAN ) ).append( String.valueOf( SLASH ) )
301 .append( parser.getName() ).append( String.valueOf( GREATER_THAN ) );
302
303 currentFaq.setQuestion( buffer.toString() );
304
305 buffer = null;
306 }
307 else if ( parser.getName().equals( ANSWER_TAG.toString() ) )
308 {
309 if ( currentFaq == null )
310 {
311 throw new XmlPullParserException( "Missing <faq> at: ("
312 + parser.getLineNumber() + ":" + parser.getColumnNumber() + ")" );
313 }
314
315 buffer.append( String.valueOf( LESS_THAN ) ).append( String.valueOf( SLASH ) )
316 .append( parser.getName() ).append( String.valueOf( GREATER_THAN ) );
317
318 currentFaq.setAnswer( buffer.toString() );
319
320 buffer = null;
321 }
322 else if ( parser.getName().equals( TITLE.toString() ) )
323 {
324 if ( currentPart == null )
325 {
326 throw new XmlPullParserException( "Missing <part> at: ("
327 + parser.getLineNumber() + ":" + parser.getColumnNumber() + ")" );
328 }
329
330 buffer.append( String.valueOf( LESS_THAN ) ).append( String.valueOf( SLASH ) )
331 .append( parser.getName() ).append( String.valueOf( GREATER_THAN ) );
332
333 currentPart.setTitle( buffer.toString() );
334
335 buffer = null;
336 }
337
338
339
340
341
342 else if ( parser.getName().equals( MACRO_TAG.toString() ) )
343 {
344 handleMacroEnd( buffer );
345 }
346 else if ( parser.getName().equals( PARAM.toString() ) )
347 {
348 if ( !StringUtils.isNotEmpty( macroName ) )
349 {
350 handleUnknown( parser, sink, TAG_TYPE_END );
351 }
352 }
353 else if ( buffer != null )
354 {
355 if ( buffer.length() > 0 && buffer.charAt( buffer.length() - 1 ) == SPACE )
356 {
357 buffer.deleteCharAt( buffer.length() - 1 );
358 }
359
360 buffer.append( String.valueOf( LESS_THAN ) ).append( String.valueOf( SLASH ) )
361 .append( parser.getName() ).append( String.valueOf( GREATER_THAN ) );
362 }
363 }
364
365
366 protected void handleText( XmlPullParser parser, Sink sink )
367 throws XmlPullParserException
368 {
369 if ( buffer != null )
370 {
371 buffer.append( parser.getText() );
372 }
373
374 }
375
376
377 protected void handleCdsect( XmlPullParser parser, Sink sink )
378 throws XmlPullParserException
379 {
380 String cdSection = parser.getText();
381
382 if ( buffer != null )
383 {
384 buffer.append( LESS_THAN ).append( BANG ).append( LEFT_SQUARE_BRACKET ).append( CDATA )
385 .append( LEFT_SQUARE_BRACKET ).append( cdSection ).append( RIGHT_SQUARE_BRACKET )
386 .append( RIGHT_SQUARE_BRACKET ).append( GREATER_THAN );
387 }
388 else
389 {
390 sink.text( cdSection );
391 }
392 }
393
394
395 protected void handleComment( XmlPullParser parser, Sink sink )
396 throws XmlPullParserException
397 {
398 String comment = parser.getText();
399
400 if ( buffer != null )
401 {
402 buffer.append( LESS_THAN ).append( BANG ).append( MINUS ).append( MINUS )
403 .append( comment ).append( MINUS ).append( MINUS ).append( GREATER_THAN );
404 }
405 else
406 {
407 if ( isEmitComments() )
408 {
409 sink.comment( comment );
410 }
411 }
412 }
413
414
415 protected void handleEntity( XmlPullParser parser, Sink sink )
416 throws XmlPullParserException
417 {
418 if ( buffer != null )
419 {
420 if ( parser.getText() != null )
421 {
422 String text = parser.getText();
423
424
425
426 if ( text.length() == 1 )
427 {
428 text = HtmlTools.escapeHTML( text );
429 }
430
431 buffer.append( text );
432 }
433 }
434 else
435 {
436 super.handleEntity( parser, sink );
437 }
438 }
439
440
441 protected void init()
442 {
443 super.init();
444
445 this.currentFaq = null;
446 this.currentPart = null;
447 this.buffer = null;
448 this.warnMessages = null;
449 this.macroName = null;
450 this.macroParameters = null;
451 }
452
453
454
455
456
457
458
459 private void handleMacroStart( XmlPullParser parser )
460 throws MacroExecutionException
461 {
462 if ( !isSecondParsing() )
463 {
464 macroName = parser.getAttributeValue( null, Attribute.NAME.toString() );
465
466 if ( macroParameters == null )
467 {
468 macroParameters = new HashMap<String, Object>();
469 }
470
471 if ( StringUtils.isEmpty( macroName ) )
472 {
473 throw new MacroExecutionException( "The '" + Attribute.NAME.toString()
474 + "' attribute for the '" + MACRO_TAG.toString() + "' tag is required." );
475 }
476 }
477 }
478
479
480
481
482
483
484
485 private void handleMacroEnd( StringBuilder buffer )
486 throws MacroExecutionException
487 {
488 if ( !isSecondParsing() )
489 {
490 if ( StringUtils.isNotEmpty( macroName ) )
491 {
492 MacroRequest request =
493 new MacroRequest( sourceContent, new FmlParser(), macroParameters, getBasedir() );
494
495 try
496 {
497 StringWriter sw = new StringWriter();
498 XhtmlBaseSink sink = new XhtmlBaseSink( sw );
499 executeMacro( macroName, request, sink );
500 sink.close();
501 buffer.append( sw.toString() );
502 }
503 catch ( MacroNotFoundException me )
504 {
505 throw new MacroExecutionException( "Macro not found: " + macroName, me );
506 }
507 }
508 }
509
510
511 macroName = null;
512 macroParameters = null;
513 }
514
515
516
517
518
519
520
521
522 private void handleParamStart( XmlPullParser parser, Sink sink )
523 throws MacroExecutionException
524 {
525 if ( !isSecondParsing() )
526 {
527 if ( StringUtils.isNotEmpty( macroName ) )
528 {
529 String paramName = parser.getAttributeValue( null, Attribute.NAME.toString() );
530 String paramValue = parser.getAttributeValue( null,
531 Attribute.VALUE.toString() );
532
533 if ( StringUtils.isEmpty( paramName ) || StringUtils.isEmpty( paramValue ) )
534 {
535 throw new MacroExecutionException( "'" + Attribute.NAME.toString()
536 + "' and '" + Attribute.VALUE.toString() + "' attributes for the '" + PARAM.toString()
537 + "' tag are required inside the '" + MACRO_TAG.toString() + "' tag." );
538 }
539
540 macroParameters.put( paramName, paramValue );
541 }
542 else
543 {
544
545 handleUnknown( parser, sink, TAG_TYPE_START );
546 }
547 }
548 }
549
550
551
552
553
554
555
556
557 private void writeFaqs( Sink sink )
558 throws ParseException
559 {
560 FmlContentParser xdocParser = new FmlContentParser();
561 xdocParser.enableLogging( getLog() );
562
563 sink.head();
564 sink.title();
565 sink.text( faqs.getTitle() );
566 sink.title_();
567 sink.head_();
568
569 sink.body();
570 sink.section1();
571 sink.sectionTitle1();
572 sink.anchor( "top" );
573 sink.text( faqs.getTitle() );
574 sink.anchor_();
575 sink.sectionTitle1_();
576
577
578
579
580
581 for ( Part part : faqs.getParts() )
582 {
583 if ( StringUtils.isNotEmpty( part.getTitle() ) )
584 {
585 sink.paragraph();
586 sink.bold();
587 xdocParser.parse( part.getTitle(), sink );
588 sink.bold_();
589 sink.paragraph_();
590 }
591
592 sink.numberedList( Sink.NUMBERING_DECIMAL );
593
594 for ( Faq faq : part.getFaqs() )
595 {
596 sink.numberedListItem();
597 sink.link( "#" + faq.getId() );
598
599 if ( StringUtils.isNotEmpty( faq.getQuestion() ) )
600 {
601 xdocParser.parse( faq.getQuestion(), sink );
602 }
603 else
604 {
605 throw new ParseException( "Missing <question> for FAQ '" + faq.getId() + "'" );
606 }
607
608 sink.link_();
609 sink.numberedListItem_();
610 }
611
612 sink.numberedList_();
613 }
614
615 sink.section1_();
616
617
618
619
620
621 for ( Part part : faqs.getParts() )
622 {
623 if ( StringUtils.isNotEmpty( part.getTitle() ) )
624 {
625 sink.section1();
626
627 sink.sectionTitle1();
628 xdocParser.parse( part.getTitle(), sink );
629 sink.sectionTitle1_();
630 }
631
632 sink.definitionList();
633
634 for ( Iterator<Faq> faqIterator = part.getFaqs().iterator(); faqIterator.hasNext(); )
635 {
636 Faq faq = faqIterator.next();
637
638 sink.definedTerm();
639 sink.anchor( faq.getId() );
640
641 if ( StringUtils.isNotEmpty( faq.getQuestion() ) )
642 {
643 xdocParser.parse( faq.getQuestion(), sink );
644 }
645 else
646 {
647 throw new ParseException( "Missing <question> for FAQ '" + faq.getId() + "'" );
648 }
649
650 sink.anchor_();
651 sink.definedTerm_();
652
653 sink.definition();
654
655 if ( StringUtils.isNotEmpty( faq.getAnswer() ) )
656 {
657 xdocParser.parse( faq.getAnswer(), sink );
658 }
659 else
660 {
661 throw new ParseException( "Missing <answer> for FAQ '" + faq.getId() + "'" );
662 }
663
664 if ( faqs.isToplink() )
665 {
666 writeTopLink( sink );
667 }
668
669 if ( faqIterator.hasNext() )
670 {
671 sink.horizontalRule();
672 }
673
674 sink.definition_();
675 }
676
677 sink.definitionList_();
678
679 if ( StringUtils.isNotEmpty( part.getTitle() ) )
680 {
681 sink.section1_();
682 }
683 }
684
685 sink.body_();
686 }
687
688
689
690
691
692
693 private void writeTopLink( Sink sink )
694 {
695 SinkEventAttributeSet atts = new SinkEventAttributeSet();
696 atts.addAttribute( SinkEventAttributeSet.ALIGN, "right" );
697 sink.paragraph( atts );
698 sink.link( "#top" );
699 sink.text( "[top]" );
700 sink.link_();
701 sink.paragraph_();
702 }
703
704
705
706
707
708
709
710
711
712 private void logMessage( String key, String msg )
713 {
714 msg = "[FML Parser] " + msg;
715 if ( getLog().isDebugEnabled() )
716 {
717 getLog().debug( msg );
718
719 return;
720 }
721
722 if ( warnMessages == null )
723 {
724 warnMessages = new HashMap<String, Set<String>>();
725 }
726
727 Set<String> set = warnMessages.get( key );
728 if ( set == null )
729 {
730 set = new TreeSet<String>();
731 }
732 set.add( msg );
733 warnMessages.put( key, set );
734 }
735
736
737
738
739 private void logWarnings()
740 {
741 if ( getLog().isWarnEnabled() && this.warnMessages != null && !isSecondParsing() )
742 {
743 for ( Map.Entry<String, Set<String>> entry : this.warnMessages.entrySet() )
744 {
745 for ( String msg : entry.getValue() )
746 {
747 getLog().warn( msg );
748 }
749 }
750
751 this.warnMessages = null;
752 }
753 }
754 }