net.htmlparser.jericho

Class SourceCompactor

java.lang.Object

SourceCompactor

All Implemented Interfaces:

CharStreamSource

public final class SourceCompactor
extends java.lang.Object
implements CharStreamSource

Compacts HTML source by removing all unnecessary white space.

Use one of the following methods to obtain the output:

• writeTo(Writer)
• appendTo(Appendable)
• toString()
• CharStreamSourceUtil.getReader(this)

The output text is functionally equivalent to the original source and should be rendered identically.

Compacting an entire Source object performs a full sequential parse automatically.

Constructor Summary

Constructors

Constructor and Description
SourceCompactor(Segment segment) Constructs a new SourceCompactor based on the specified Segment.

Method Summary

Methods

Modifier and Type	Method and Description
void	appendTo(java.lang.Appendable appendable) Appends the output to the specified Appendable object.
long	getEstimatedMaximumOutputLength() Returns the estimated maximum number of characters in the output, or -1 if no estimate is available.
java.lang.String	getNewLine() Returns the string to be used to represent a newline in the output.
SourceCompactor	setNewLine(java.lang.String newLine) Sets the string to be used to represent a newline in the output.
java.lang.String	toString() Returns the output as a string.
void	writeTo(java.io.Writer writer) Writes the output to the specified Writer.

Methods inherited from class java.lang.Object

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

Constructor Detail

SourceCompactor

public SourceCompactor(Segment segment)

Constructs a new SourceCompactor based on the specified Segment.

Parameters:

segment - the segment containing the HTML to be compacted.

Method Detail

writeTo

public void writeTo(java.io.Writer writer)
             throws java.io.IOException

Description copied from interface: CharStreamSource

Writes the output to the specified Writer.

Specified by:

writeTo in interface CharStreamSource

Parameters:

writer - the destination java.io.Writer for the output.

Throws:

java.io.IOException - if an I/O exception occurs.

appendTo

public void appendTo(java.lang.Appendable appendable)
              throws java.io.IOException

Description copied from interface: CharStreamSource

Appends the output to the specified Appendable object.

Specified by:

appendTo in interface CharStreamSource

Parameters:

appendable - the destination java.lang.Appendable object for the output.

Throws:

java.io.IOException - if an I/O exception occurs.

getEstimatedMaximumOutputLength

public long getEstimatedMaximumOutputLength()

Description copied from interface: CharStreamSource

Returns the estimated maximum number of characters in the output, or -1 if no estimate is available.

The returned value should be used as a guide for efficiency purposes only, for example to set an initial StringBuilder capacity. There is no guarantee that the length of the output is indeed less than this value, as classes implementing this method often use assumptions based on typical usage to calculate the estimate.

Although implementations of this method should never return a value less than -1, users of this method must not assume that this will always be the case. Standard practice is to interpret any negative value as meaning that no estimate is available.

Specified by:

getEstimatedMaximumOutputLength in interface CharStreamSource

Returns:

the estimated maximum number of characters in the output, or -1 if no estimate is available.

toString

public java.lang.String toString()

Description copied from interface: CharStreamSource

Returns the output as a string.

Specified by:

toString in interface CharStreamSource

Overrides:

toString in class java.lang.Object

Returns:

the output as a string.

setNewLine

public SourceCompactor setNewLine(java.lang.String newLine)

Sets the string to be used to represent a newline in the output.

The default is to use the same new line string as is used in the source document, which is determined via the Source.getNewLine() method. If the source document does not contain any new lines, a "best guess" is made by either taking the new line string of a previously parsed document, or using the value from the static Config.NewLine property.

Specifying a null argument resets the property to its default value, which is to use the same new line string as is used in the source document.

Parameters:

newLine - the string to be used to represent a newline in the output, may be null.

Returns:

this SourceFormatter instance, allowing multiple property setting methods to be chained in a single statement.

See Also:

getNewLine()

getNewLine

public java.lang.String getNewLine()

Returns the string to be used to represent a newline in the output.

See the setNewLine(String) method for a full description of this property.

Returns:

the string to be used to represent a newline in the output.