to.etc.lexer

Class HtmlTextScanner

java.lang.Object

to.etc.util.TextScanner

to.etc.lexer.HtmlTextScanner

public class HtmlTextScanner
extends TextScanner

Helper class to scan HTML and remove invalid constructs.

Author:

Frits Jalvingh Created on Feb 22, 2010

Constructor Summary

Constructors

Constructor and Description
HtmlTextScanner()

Method Summary

Modifier and Type	Method and Description
Map<String,to.etc.lexer.HtmlTextScanner.TagInfo>	getMap()
static String	htmlRemoveAll(String html, boolean lf)
static void	htmlRemoveAll(StringBuilder outsb, String text, boolean lf)
static String	htmlRemoveUnsafe(String html)
static void	htmlRemoveUnsafe(StringBuilder outsb, String text) This scans the input, and only copies "safe" html, which is HTML with only simple constructs.
void	scan(StringBuilder sb, String html) Scan HTML and remove unsafe tags and attributes.
void	scanAndRemove(StringBuilder sb, String html, boolean includelf) Remove all HTML tags and collapse whitespace.

Methods inherited from class to.etc.util.TextScanner

accept, accept, append, append, append, clear, copy, copy, copy, currentChar, eof, getBuffer, getCopied, getInt, getLastInt, inc, index, LA, LA, length, nextChar, peekWord, sb, scanDelimited, scanDouble, scanInt, scanLetters, scanWord, setIndex, setString, skip, skipWS

Methods inherited from class java.lang.Object

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

Constructor Detail

HtmlTextScanner

public HtmlTextScanner()

Method Detail

getMap

public Map<String,to.etc.lexer.HtmlTextScanner.TagInfo> getMap()

scan

public void scan(StringBuilder sb,
                 String html)

Scan HTML and remove unsafe tags and attributes. The result is garantueed to be safe and well-formed.

Parameters:

sb -

html -

scanAndRemove

public void scanAndRemove(StringBuilder sb,
                          String html,
                          boolean includelf)

Remove all HTML tags and collapse whitespace.

Parameters:

sb -

html -

includelf -

htmlRemoveUnsafe

public static void htmlRemoveUnsafe(StringBuilder outsb,
                                    String text)

This scans the input, and only copies "safe" html, which is HTML with only simple constructs. It checks to make sure the resulting document is xml-safe (well-formed), if the input is not well-formed it will add or remove tags until the result is valid.

Parameters:

sb -

html -

htmlRemoveUnsafe

public static String htmlRemoveUnsafe(String html)

htmlRemoveAll

public static void htmlRemoveAll(StringBuilder outsb,
                                 String text,
                                 boolean lf)

htmlRemoveAll

public static String htmlRemoveAll(String html,
                                   boolean lf)