de.dbsystems.simplescrape
Class HTMLTagAttributes

java.lang.Object
  de.dbsystems.simplescrape.HTMLTagAttributes

public class HTMLTagAttributes
extends java.lang.Object

Defines a class for parsing and storing the attributes of an HTML tag. Note that the attributes are not parsed until they are actually needed.

Since:

04.04.2007

Author:

Ronald Bieber, DB Systems GmbH

Field Summary

static java.lang.String	NO_VALUE
static java.lang.String	QUOTATION_CHARS

Constructor Summary

HTMLTagAttributes(java.lang.String attributesString)
Constructs new attributes from a string.

Method Summary

boolean	exists(java.lang.String name) Returns, whether an attribute was defined within this tag.
java.lang.String	get(java.lang.String name) Get the value of a given attribute.
java.util.Enumeration<java.lang.String>	getAttributeNames() Returns an enumeration of all the attribute names found.
int	getSize() Return the number of attributes stored herein.
boolean	match(HTMLTagAttributes other, ScrapeOptions options)
java.lang.String	toString() Returns the attribute string.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

NO_VALUE

public static final java.lang.String NO_VALUE

See Also:

Constant Field Values

QUOTATION_CHARS

public static final java.lang.String QUOTATION_CHARS

See Also:

Constant Field Values

Constructor Detail

HTMLTagAttributes

public HTMLTagAttributes(java.lang.String attributesString)

Constructs new attributes from a string. The attributes are not parsed right away. Instead, they are only parsed when needed.

Parameters:

attributesString - The attribute string from inside the tag. Example: if the tag is "

", use " class=frame" as attributesString.

Method Detail

exists

public boolean exists(java.lang.String name)

Returns, whether an attribute was defined within this tag.

Parameters:

name - The name of the attribute to be checked.

Returns:

Whether it exists or not.

get

public java.lang.String get(java.lang.String name)

Get the value of a given attribute.

Parameters:

name - The attribute name (not case-sensitive).

Returns:

the value of that attribute, or null, if that attribute was not present in this tag. For unary attributes an empty string is returned. The result is not quoted, regardless of the quoting originally used.

toString

public java.lang.String toString()

Returns the attribute string. This string is identical to the original format and has not been normalized in any way.

Overrides:

toString in class java.lang.Object

getAttributeNames

public java.util.Enumeration<java.lang.String> getAttributeNames()

Returns an enumeration of all the attribute names found.

Returns:

The attribute names as an enumeration of strings. This can be null, if no attributes are present.

getSize

public int getSize()

Return the number of attributes stored herein.

Returns:

The number of attributes.

match

public boolean match(HTMLTagAttributes other,
                     ScrapeOptions options)