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org.htmlparser
Class NodeReader  

java.lang.Object
  java.io.Reader
      java.io.BufferedReader
          org.htmlparser.NodeReader

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public class NodeReader

extends java.io.BufferedReader

NodeReader builds on the BufferedReader, providing methods to read one element at a time

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Field Summary
static java.lang.String	DECIPHER_ERROR
private  boolean	dontReadNextLine
protected  java.lang.String	line
private  int	lineCount
private  org.htmlparser.util.NodeList	nextParsedNode
protected  Node	node
private  Parser	parser
protected  int	posInLine
private  java.lang.String	previousLine
protected  org.htmlparser.scanners.TagScanner	previousOpenScanner
private  RemarkNodeParser	remarkNodeParser
private  org.htmlparser.parserHelper.StringParser	stringParser
protected  java.lang.String	url

 

Fields inherited from class java.io.BufferedReader

 

Fields inherited from class java.io.Reader

lock

 

Constructor Summary

NodeReader(java.io.Reader in, int len)           This constructor basically overrides the existing constructor in the BufferedReader class.

NodeReader(java.io.Reader in, int len, java.lang.String url)           The constructor takes in a reader object, it's length and the url to be read.

NodeReader(java.io.Reader in, java.lang.String url)           The constructor takes in a reader object, and the url to be read.

 

Method Summary
void	addNextParsedNode(Node nextParsedNode)           Adds the given node on the front of an internal list of pre-parsed nodes.
void	appendLineDetails(java.lang.StringBuffer msgBuffer)
private  boolean	beginTag(java.lang.String line, int pos)           Returns true if the text at pos in line should be scanned as a tag.
void	changeLine(java.lang.String line)           This method is intended to be called only by scanners, when a situation of dirty html has arisen, and action has been taken to correct the parsed tags.
java.lang.String	getCurrentLine()
int	getLastLineNumber()           Get the last line number that the reader has read
int	getLastReadPosition()           This method is useful when designing your own scanners.
java.lang.String	getLine()           Returns the line.
int	getLineCount()           Returns the lineCount.
static java.lang.String	getLineSeparator()           Gets the line seperator that is being used
java.lang.String	getNextLine()
Parser	getParser()           Returns the parser object for which this reader exists
java.lang.String	getPreviousLine()           Returns the previousLine.
org.htmlparser.scanners.TagScanner	getPreviousOpenScanner()           Gets the previousOpenScanner.
org.htmlparser.parserHelper.StringParser	getStringParser()
java.lang.String	getURL()           Get the url for this reader.
boolean	isDontReadNextLine()
Node	readElement()           Read the next element
Node	readElement(boolean balance_quotes)           Read the next element
protected  boolean	readNextLine()           Do we need to read the next line ?
void	reset()           Reset the stream to the point where the mark() method was called.
void	setDontReadNextLine(boolean dontReadNextLine)
void	setLineCount(int lineCount)           Sets the lineCount.
static void	setLineSeparator(java.lang.String lineSeparator)
void	setParser(Parser newParser)           The setParser method is used by the parser to put its own object into the reader.
void	setPosInLine(int posInLine)           Sets the posInLine.
void	setPreviousOpenScanner(org.htmlparser.scanners.TagScanner previousOpenScanner)           Sets the previousOpenScanner.

 

Methods inherited from class java.io.BufferedReader

close, mark, markSupported, read, read, readLine, ready, skip

 

Methods inherited from class java.io.Reader

read

 

Methods inherited from class java.lang.Object

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

 

Field Detail

DECIPHER_ERROR

public static final java.lang.String DECIPHER_ERROR

See Also:

Constant Field Values

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posInLine

protected int posInLine

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line

protected java.lang.String line

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node

protected Node node

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previousOpenScanner

protected org.htmlparser.scanners.TagScanner previousOpenScanner

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url

protected java.lang.String url

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parser

private Parser parser

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lineCount

private int lineCount

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previousLine

private java.lang.String previousLine

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stringParser

private org.htmlparser.parserHelper.StringParser stringParser

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remarkNodeParser

private RemarkNodeParser remarkNodeParser

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nextParsedNode

private org.htmlparser.util.NodeList nextParsedNode

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dontReadNextLine

private boolean dontReadNextLine

Constructor Detail

NodeReader

public NodeReader(java.io.Reader in,
                  int len,
                  java.lang.String url)

The constructor takes in a reader object, it's length and the url to be read.

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NodeReader

public NodeReader(java.io.Reader in,
                  int len)

This constructor basically overrides the existing constructor in the BufferedReader class. The URL defaults to an empty string.

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NodeReader

public NodeReader(java.io.Reader in,
                  java.lang.String url)

The constructor takes in a reader object, and the url to be read. The buffer size defaults to 8192.

Method Detail

getURL

public java.lang.String getURL()

Get the url for this reader.

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changeLine

public void changeLine(java.lang.String line)

This method is intended to be called only by scanners, when a situation of dirty html has arisen, and action has been taken to correct the parsed tags. For e.g. if we have html of the form :

 
  <a href="somelink.html"><img src=...>
 
 <a href="someotherlink.html">...</a>
  
 

Now to salvage the first link, we'd probably like to insert an end tag somewhere (typically before the second begin link tag). So that the parsing continues uninterrupted, we will need to change the existing line being parsed, to contain the end tag in it.

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getCurrentLine

public java.lang.String getCurrentLine()

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getLastLineNumber

public int getLastLineNumber()

Get the last line number that the reader has read

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getLastReadPosition

public int getLastReadPosition()

This method is useful when designing your own scanners. You might need to find out what is the location where the reader has stopped last.

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getNextLine

public java.lang.String getNextLine()

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getParser

public Parser getParser()

Returns the parser object for which this reader exists

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getPreviousOpenScanner

public org.htmlparser.scanners.TagScanner getPreviousOpenScanner()

Gets the previousOpenScanner.

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beginTag

private boolean beginTag(java.lang.String line,
                         int pos)

Returns true if the text at pos in line should be scanned as a tag. Basically an open angle followed by a known special character or a letter.

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readElement

public Node readElement()
                 throws org.htmlparser.util.ParserException

Read the next element

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readElement

public Node readElement(boolean balance_quotes)
                 throws org.htmlparser.util.ParserException

Read the next element

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appendLineDetails

public void appendLineDetails(java.lang.StringBuffer msgBuffer)

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readNextLine

protected boolean readNextLine()

Do we need to read the next line ?

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setParser

public void setParser(Parser newParser)

The setParser method is used by the parser to put its own object into the reader. This happens internally, so this method is not generally for use by the developer or the user.

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setPreviousOpenScanner

public void setPreviousOpenScanner(org.htmlparser.scanners.TagScanner previousOpenScanner)

Sets the previousOpenScanner.

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setLineSeparator

public static void setLineSeparator(java.lang.String lineSeparator)

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getLineSeparator

public static java.lang.String getLineSeparator()

Gets the line seperator that is being used

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getLineCount

public int getLineCount()

Returns the lineCount.

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getPreviousLine

public java.lang.String getPreviousLine()

Returns the previousLine.

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getLine

public java.lang.String getLine()

Returns the line.

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setLineCount

public void setLineCount(int lineCount)

Sets the lineCount.

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setPosInLine

public void setPosInLine(int posInLine)

Sets the posInLine.

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reset

public void reset()
           throws java.io.IOException

Description copied from class: java.io.BufferedReader

Reset the stream to the point where the mark() method was called. Any chars that were read after the mark point was set will be re-read during subsequent reads.

This method will throw an IOException if the number of chars read from the stream since the call to mark() exceeds the mark limit passed when establishing the mark.

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getStringParser

public org.htmlparser.parserHelper.StringParser getStringParser()

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addNextParsedNode

public void addNextParsedNode(Node nextParsedNode)

Adds the given node on the front of an internal list of pre-parsed nodes. Used in recursive calls where downstream nodes have been recognized in order to parse the current node.

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isDontReadNextLine

public boolean isDontReadNextLine()

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setDontReadNextLine

public void setDontReadNextLine(boolean dontReadNextLine)

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> org >> [ htmlparser overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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