Class Parser

protected DTD dtd

The document template description that will be used to parse the documents.

protected boolean strict

The value of this field determines whether or not the Parser will be strict in enforcing SGML compatibility. The default value is false, stating that the parser should do everything to parse and get at least some information even from the incorrectly written HTML input.

public Parser(DTD a_dtd)

Creates a new parser that uses the given DTD to access data on the possible tokens, arguments and syntax. There is no single - step way to get a default DTD; you must either refer to the implementation - specific packages, write your own DTD or obtain the working instance of parser in other way, for example, by calling HTMLEditorKit.getParser().

Parameters:

a_dtd - A DTD to use.

protected void endTag(boolean omitted)

The method is called when the HTML end (closing) tag is found or if the parser concludes that the one should be present in the current position. The method is called immediatly before calling the handleEndTag().

Parameters:

omitted - True if the tag is no actually present in the document, but is supposed by the parser (like </html> at the end of the document).

protected void error(String msg)

Invokes the error handler. The default method in this implementation finally delegates the call to handleError, also providing the number of the current line.

protected void error(String msg,
                     String invalid)

Invokes the error handler. The default method in this implementation finally delegates the call to error (msg+": '"+invalid+"'").

protected void error(String parm1,
                     String parm2,
                     String parm3)

Invokes the error handler. The default method in this implementation finally delegates the call to error (parm1+" "+ parm2+" "+ parm3).

protected void error(String parm1,
                     String parm2,
                     String parm3,
                     String parm4)

Invokes the error handler. The default method in this implementation finally delegates the call to error (parm1+" "+ parm2+" "+ parm3+" "+ parm4).

protected void flushAttributes()

In this implementation, this is never called and returns without action.

protected SimpleAttributeSet getAttributes()

Get the attributes of the current tag.

Returns:

The attribute set, representing the attributes of the current tag.

protected int getCurrentLine()

Get the number of the document line being parsed.

Returns:

The current line.

protected int getCurrentPos()

Get the current position in the document being parsed.

Returns:

The current position.

protected void handleComment(char[] comment)

Handle HTML comment. The default method returns without action.

Parameters:

comment - The comment being handled

protected void handleEOFInComment()

This is additionally called in when the HTML content terminates without closing the HTML comment. This can only happen if the HTML document contains errors (for example, the closing --;gt is missing. The default method calls the error handler.

protected void handleEmptyTag(TagElement tag)
            throws ChangedCharSetException

Handle the tag with no content, like <br>. The method is called for the elements that, in accordance with the current DTD, has an empty content.

Parameters:

tag - The tag being handled.

Throws:

ChangedCharSetException -

protected void handleEndTag(TagElement tag)

The method is called when the HTML closing tag ((like </table>) is found or if the parser concludes that the one should be present in the current position.

Parameters:

tag - The tag being handled

protected void handleError(int line,
                           String message)

protected void handleStartTag(TagElement tag)

The method is called when the HTML opening tag ((like <table>) is found or if the parser concludes that the one should be present in the current position.

Parameters:

tag - The tag being handled

protected void handleText(char[] text)

Handle the text section.

For non-preformatted section, the parser replaces \t, \r and \n by spaces and then multiple spaces by a single space. Additionaly, all whitespace around tags is discarded.

For pre-formatted text (inside TEXAREA and PRE), the parser preserves all tabs and spaces, but removes one bounding \r, \n or \r\n, if it is present. Additionally, it replaces each occurence of \r or \r\n by a single \n.

Parameters:

text - A section text.

protected void handleTitle(char[] title)

Handle HTML <title> tag. This method is invoked when both title starting and closing tags are already behind. The passed argument contains the concatenation of all title text sections.

Parameters:

title - The title text.

protected TagElement makeTag(Element element)

Constructs the tag from the given element. In this implementation, this is defined, but never called.

Parameters:

element - the base element of the tag.

Returns:

the tag

protected TagElement makeTag(Element element,
                             boolean isSupposed)

Constructs the tag from the given element.

Parameters:

element - the tag base Element

isSupposed - true if the tag is not actually present in the html input, but the parser supposes that it should to occur in the current location.

Returns:

the tag

protected void markFirstTime(Element element)

This is called when the tag, representing the given element, occurs first time in the document.

Parameters:

element -

public void parse(Reader reader)
            throws IOException

Parse the HTML text, calling various methods in response to the occurence of the corresponding HTML constructions.

Parameters:

reader - The reader to read the source HTML from.

Throws:

IOException - If the reader throws one.

public String parseDTDMarkup()
            throws IOException

Parses DTD markup declaration. Currently returns without action.

Returns:

null.

Throws:

IOException -

protected boolean parseMarkupDeclarations(StringBuffer strBuff)
            throws IOException

Parse DTD document declarations. Currently only parses the document type declaration markup.

Parameters:

strBuff -

Returns:

true if this is a valid DTD markup declaration.

Throws:

IOException -

protected void startTag(TagElement tag)
            throws ChangedCharSetException

The method is called when the HTML opening tag ((like <table>) is found or if the parser concludes that the one should be present in the current position. The method is called immediately before calling the handleStartTag.

Parameters:

tag - The tag