org.apache.maven.doxia.parser
Class XhtmlBaseParser

java.lang.Object
  org.apache.maven.doxia.parser.AbstractParser
      org.apache.maven.doxia.parser.AbstractXmlParser
          org.apache.maven.doxia.parser.XhtmlBaseParser

All Implemented Interfaces:

LogEnabled, HtmlMarkup, Markup, XmlMarkup, Parser

public class XhtmlBaseParser
extends AbstractXmlParser
implements HtmlMarkup

Common base parser for xhtml events.

Since:

1.1

Version:

$Id: XhtmlBaseParser.java 1185112 2011-10-17 11:33:00Z ltheussl $

Author:

Jason van Zyl, ltheussl

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.maven.doxia.parser.AbstractXmlParser

AbstractXmlParser.CachedFileEntityResolver

Field Summary

Fields inherited from interface org.apache.maven.doxia.markup.HtmlMarkup

A, ABBR, ACRONYM, ADDRESS, APPLET, AREA, B, BASE, BASEFONT, BDO, BIG, BLOCKQUOTE, BODY, BR, BUTTON, CAPTION, CDATA_TYPE, CENTER, CITE, CODE, COL, COLGROUP, DD, DEL, DFN, DIR, DIV, DL, DT, EM, ENTITY_TYPE, FIELDSET, FONT, FORM, FRAME, FRAMESET, H1, H2, H3, H4, H5, H6, HEAD, HR, HTML, I, IFRAME, IMG, INPUT, INS, ISINDEX, KBD, LABEL, LEGEND, LI, LINK, MAP, MENU, META, NOFRAMES, NOSCRIPT, OBJECT, OL, OPTGROUP, OPTION, P, PARAM, PRE, Q, S, SAMP, SCRIPT, SELECT, SMALL, SPAN, STRIKE, STRONG, STYLE, SUB, SUP, TABLE, TAG_TYPE_END, TAG_TYPE_SIMPLE, TAG_TYPE_START, TBODY, TD, TEXTAREA, TFOOT, TH, THEAD, TITLE, TR, TT, U, UL, VAR

Fields inherited from interface org.apache.maven.doxia.markup.XmlMarkup

BANG, CDATA, DOCTYPE_START, ENTITY_START, XML_NAMESPACE

Fields inherited from interface org.apache.maven.doxia.markup.Markup

COLON, EOL, EQUAL, GREATER_THAN, LEFT_CURLY_BRACKET, LEFT_SQUARE_BRACKET, LESS_THAN, MINUS, PLUS, QUOTE, RIGHT_CURLY_BRACKET, RIGHT_SQUARE_BRACKET, SEMICOLON, SLASH, SPACE, STAR

Fields inherited from interface org.apache.maven.doxia.parser.Parser

ROLE, TXT_TYPE, UNKNOWN_TYPE, XML_TYPE

Constructor Summary

XhtmlBaseParser()

Method Summary

protected boolean	baseEndTag(XmlPullParser parser, Sink sink) Goes through a common list of possible html end tags.
protected boolean	baseStartTag(XmlPullParser parser, Sink sink) Goes through a common list of possible html start tags.
protected void	consecutiveSections(int newLevel, Sink sink) Make sure sections are nested consecutively.
protected int	getSectionLevel() Return the current section level.
protected void	handleCdsect(XmlPullParser parser, Sink sink) Handles CDATA sections.
protected void	handleComment(XmlPullParser parser, Sink sink) Handles comments.
protected void	handleEndTag(XmlPullParser parser, Sink sink) Goes through the possible end tags. Just calls baseEndTag(XmlPullParser,Sink), this should be overridden by implementing parsers to include additional tags.
protected void	handleStartTag(XmlPullParser parser, Sink sink) Goes through the possible start tags. Just calls baseStartTag(XmlPullParser,Sink), this should be overridden by implementing parsers to include additional tags.
protected void	handleText(XmlPullParser parser, Sink sink) Handles text events.
protected void	init() Initialize the parser.
protected boolean	isScriptBlock() Checks if we are currently inside a <script> tag.
protected boolean	isVerbatim() Checks if we are currently inside a <pre> tag.
void	parse(Reader source, Sink sink) Parses the given source model and emits Doxia events into the given sink.
protected void	setSectionLevel(int newLevel) Set the current section level.
protected String	validAnchor(String id) Checks if the given id is a valid Doxia id and if not, returns a transformed one.
protected void	verbatim_() Stop verbatim mode.
protected void	verbatim() Start verbatim mode.

Methods inherited from class org.apache.maven.doxia.parser.AbstractXmlParser

getAttributesFromParser, getLocalEntities, getText, getType, handleEntity, handleUnknown, isCollapsibleWhitespace, isIgnorableWhitespace, isTrimmableWhitespace, isValidate, parse, setCollapsibleWhitespace, setIgnorableWhitespace, setTrimmableWhitespace, setValidate

Methods inherited from class org.apache.maven.doxia.parser.AbstractParser

doxiaVersion, enableLogging, executeMacro, getBasedir, getLog, getMacroManager, isSecondParsing, setSecondParsing

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

XhtmlBaseParser

public XhtmlBaseParser()

Method Detail

parse

public void parse(Reader source,
                  Sink sink)
           throws ParseException

Parses the given source model and emits Doxia events into the given sink.

Specified by:

parse in interface Parser

Overrides:

parse in class AbstractXmlParser

Parameters:

source - not null reader that provides the source document. You could use newReader methods from ReaderFactory.

sink - A sink that consumes the Doxia events.

Throws:

ParseException - if the model could not be parsed.

baseStartTag

protected boolean baseStartTag(XmlPullParser parser,
                               Sink sink)

Goes through a common list of possible html start tags. These include only tags that can go into the body of a xhtml document and so should be re-usable by different xhtml-based parsers.

The currently handled tags are:

<h2>, <h3>, <h4>, <h5>, <h6>, <p>, <pre>, <ul>, <ol>, <li>, <dl>, <dt>, <dd>, <b>, <strong>, <i>, <em>, <code>, <samp>, <tt>, <a>, <table>, <tr>, <th>, <td>, <caption>, <br/>, <hr/>, <img/>.

Parameters:

parser - A parser.

sink - the sink to receive the events.

Returns:

True if the event has been handled by this method, i.e. the tag was recognized, false otherwise.

baseEndTag

protected boolean baseEndTag(XmlPullParser parser,
                             Sink sink)

Goes through a common list of possible html end tags. These should be re-usable by different xhtml-based parsers. The tags handled here are the same as for baseStartTag(XmlPullParser,Sink), except for the empty elements (<br/>, <hr/>, <img/>).

Parameters:

parser - A parser.

sink - the sink to receive the events.

Returns:

True if the event has been handled by this method, false otherwise.

handleStartTag

protected void handleStartTag(XmlPullParser parser,
                              Sink sink)
                       throws XmlPullParserException,
                              MacroExecutionException

Goes through the possible start tags. Just calls baseStartTag(XmlPullParser,Sink), this should be overridden by implementing parsers to include additional tags.

Specified by:

handleStartTag in class AbstractXmlParser

Parameters:

parser - A parser, not null.

sink - the sink to receive the events.

Throws:

XmlPullParserException - if there's a problem parsing the model

MacroExecutionException - if there's a problem executing a macro

handleEndTag

protected void handleEndTag(XmlPullParser parser,
                            Sink sink)
                     throws XmlPullParserException,
                            MacroExecutionException

Goes through the possible end tags. Just calls baseEndTag(XmlPullParser,Sink), this should be overridden by implementing parsers to include additional tags.

Specified by:

handleEndTag in class AbstractXmlParser

Parameters:

parser - A parser, not null.

sink - the sink to receive the events.

Throws:

XmlPullParserException - if there's a problem parsing the model

MacroExecutionException - if there's a problem executing a macro

handleText

protected void handleText(XmlPullParser parser,
                          Sink sink)
                   throws XmlPullParserException

Handles text events.

This is a default implementation, if the parser points to a non-empty text element, it is emitted as a text event into the specified sink.

Overrides:

handleText in class AbstractXmlParser

Parameters:

parser - A parser, not null.

sink - the sink to receive the events. Not null.

Throws:

XmlPullParserException - if there's a problem parsing the model

handleComment

protected void handleComment(XmlPullParser parser,
                             Sink sink)
                      throws XmlPullParserException

Handles comments.

This is a default implementation, all data are emitted as comment events into the specified sink.

Overrides:

handleComment in class AbstractXmlParser

Parameters:

parser - A parser, not null.

sink - the sink to receive the events. Not null.

Throws:

XmlPullParserException - if there's a problem parsing the model

handleCdsect

protected void handleCdsect(XmlPullParser parser,
                            Sink sink)
                     throws XmlPullParserException

Handles CDATA sections.

This is a default implementation, all data are emitted as text events into the specified sink.

Overrides:

handleCdsect in class AbstractXmlParser

Parameters:

parser - A parser, not null.

sink - the sink to receive the events. Not null.

Throws:

XmlPullParserException - if there's a problem parsing the model

consecutiveSections

protected void consecutiveSections(int newLevel,
                                   Sink sink)

Make sure sections are nested consecutively.

HTML doesn't have any sections, only sectionTitles (<h2> etc), that means we have to open close any sections that are missing in between.

For instance, if the following sequence is parsed:

 <h3></h3>
 <h6></h6>
 

we have to insert two section starts before we open the <h6>. In the following sequence

 <h6></h6>
 <h3></h3>
 

we have to close two sections before we open the <h3>.

The current level is set to newLevel afterwards.

Parameters:

newLevel - the new section level, all upper levels have to be closed.

sink - the sink to receive the events.

getSectionLevel

protected int getSectionLevel()

Return the current section level.

Returns:

the current section level.

setSectionLevel

protected void setSectionLevel(int newLevel)

Set the current section level.

Parameters:

newLevel - the new section level.

verbatim_

protected void verbatim_()

Stop verbatim mode.

verbatim

protected void verbatim()

Start verbatim mode.

isVerbatim

protected boolean isVerbatim()

Checks if we are currently inside a <pre> tag.

Returns:

true if we are currently in verbatim mode.

isScriptBlock

protected boolean isScriptBlock()

Checks if we are currently inside a <script> tag.

Returns:

true if we are currently inside <script> tags.

Since:

1.1.1.

validAnchor

protected String validAnchor(String id)

Checks if the given id is a valid Doxia id and if not, returns a transformed one.

Parameters:

id - The id to validate.

Returns:

A transformed id or the original id if it was already valid.

See Also:

DoxiaUtils.encodeId(String)

init

protected void init()

Initialize the parser. This is called first by Parser.parse(java.io.Reader, org.apache.maven.doxia.sink.Sink) and can be used to set the parser into a clear state so it can be re-used.

Overrides:

init in class AbstractParser