org.htmlparser

Interface Tag

public interface Tag extends Node

This interface represents a tag (<xxx yyy="zzz">) in the HTML document. Adds capabilities to a Node that are specific to a tag.
Method Summary
booleanbreaksFlow()
Determines if the given tag breaks the flow of text.
StringgetAttribute(String name)
Returns the value of an attribute.
AttributegetAttributeEx(String name)
Returns the attribute with the given name.
VectorgetAttributesEx()
Gets the attributes in the tag.
String[]getEnders()
Return the set of tag names that cause this tag to finish.
intgetEndingLineNumber()
Get the line number where this tag ends.
TaggetEndTag()
Get the end tag for this (composite) tag.
String[]getEndTagEnders()
Return the set of end tag names that cause this tag to finish.
String[]getIds()
Return the set of names handled by this tag.
StringgetRawTagName()
Return the name of this tag.
intgetStartingLineNumber()
Get the line number where this tag starts.
StringgetTagName()
Return the name of this tag.
ScannergetThisScanner()
Return the scanner associated with this tag.
booleanisEmptyXmlTag()
Is this an empty xml tag of the form <tag/>.
booleanisEndTag()
Predicate to determine if this tag is an end tag (i.e.
voidremoveAttribute(String key)
Remove the attribute with the given key, if it exists.
voidsetAttribute(String key, String value)
Set attribute with given key, value pair.
voidsetAttribute(String key, String value, char quote)
Set attribute with given key/value pair, the value is quoted by quote.
voidsetAttributeEx(Attribute attribute)
Set an attribute.
voidsetAttributesEx(Vector attribs)
Sets the attributes.
voidsetEmptyXmlTag(boolean emptyXmlTag)
Set this tag to be an empty xml node, or not.
voidsetEndTag(Tag tag)
Set the end tag for this (composite) tag.
voidsetTagName(String name)
Set the name of this tag.
voidsetThisScanner(Scanner scanner)
Set the scanner associated with this tag.

Method Detail

breaksFlow

public boolean breaksFlow()
Determines if the given tag breaks the flow of text.

Returns: true if following text would start on a new line, false otherwise.

getAttribute

public String getAttribute(String name)
Returns the value of an attribute.

Parameters: name Name of attribute, case insensitive.

Returns: The value associated with the attribute or null if it does not exist, or is a stand-alone.

See Also: Tag

getAttributeEx

public Attribute getAttributeEx(String name)
Returns the attribute with the given name.

Parameters: name Name of attribute, case insensitive.

Returns: The attribute or null if it does not exist.

See Also: Tag

getAttributesEx

public Vector getAttributesEx()
Gets the attributes in the tag.

Returns: Returns the list of {@link Attribute Attributes} in the tag.

See Also: Tag

getEnders

public String[] getEnders()
Return the set of tag names that cause this tag to finish. These are the normal (non end tags) that if encountered while scanning (a composite tag) will cause the generation of a virtual tag. Since this a a non-composite tag, the default is no enders.

Returns: The names of following tags that stop further scanning.

getEndingLineNumber

public int getEndingLineNumber()
Get the line number where this tag ends.

Returns: The (zero based) line number in the page where this tag ends.

getEndTag

public Tag getEndTag()
Get the end tag for this (composite) tag. For a non-composite tag this always returns null.

Returns: The tag that terminates this composite tag, i.e. </HTML>.

See Also: Tag

getEndTagEnders

public String[] getEndTagEnders()
Return the set of end tag names that cause this tag to finish. These are the end tags that if encountered while scanning (a composite tag) will cause the generation of a virtual tag. Since this a a non-composite tag, it has no end tag enders.

Returns: The names of following end tags that stop further scanning.

getIds

public String[] getIds()
Return the set of names handled by this tag. Since this a a generic tag, it has no ids.

Returns: The names to be matched that create tags of this type.

getRawTagName

public String getRawTagName()
Return the name of this tag.

Returns: The tag name or null if this tag contains nothing or only whitespace.

getStartingLineNumber

public int getStartingLineNumber()
Get the line number where this tag starts.

Returns: The (zero based) line number in the page where this tag starts.

getTagName

public String getTagName()
Return the name of this tag.

Note: This value is converted to uppercase and does not begin with "/" if it is an end tag. Nor does it end with a slash in the case of an XML type tag. The conversion to uppercase is performed with an ENGLISH locale.

Returns: The tag name.

See Also: Tag

getThisScanner

public Scanner getThisScanner()
Return the scanner associated with this tag.

Returns: The scanner associated with this tag.

See Also: Tag

isEmptyXmlTag

public boolean isEmptyXmlTag()
Is this an empty xml tag of the form <tag/>.

Returns: true if the last character of the last attribute is a '/'.

isEndTag

public boolean isEndTag()
Predicate to determine if this tag is an end tag (i.e. </HTML>).

Returns: true if this tag is an end tag.

removeAttribute

public void removeAttribute(String key)
Remove the attribute with the given key, if it exists.

Parameters: key The name of the attribute.

setAttribute

public void setAttribute(String key, String value)
Set attribute with given key, value pair. Figures out a quote character to use if necessary.

Parameters: key The name of the attribute. value The value of the attribute.

See Also: Tag Tag

setAttribute

public void setAttribute(String key, String value, char quote)
Set attribute with given key/value pair, the value is quoted by quote.

Parameters: key The name of the attribute. value The value of the attribute. quote The quote character to be used around value. If zero, it is an unquoted value.

See Also: Tag

setAttributeEx

public void setAttributeEx(Attribute attribute)
Set an attribute. This replaces an attribute of the same name. To set the zeroth attribute (the tag name), use setTagName().

Parameters: attribute The attribute to set.

See Also: Tag

setAttributesEx

public void setAttributesEx(Vector attribs)
Sets the attributes. NOTE: Values of the extended hashtable are two element arrays of String, with the first element being the original name (not uppercased), and the second element being the value.

Parameters: attribs The attribute collection to set.

See Also: Tag

setEmptyXmlTag

public void setEmptyXmlTag(boolean emptyXmlTag)
Set this tag to be an empty xml node, or not. Adds or removes an ending slash on the tag.

Parameters: emptyXmlTag If true, ensures there is an ending slash in the node, i.e. <tag/>, otherwise removes it.

setEndTag

public void setEndTag(Tag tag)
Set the end tag for this (composite) tag. For a non-composite tag this is a no-op.

Parameters: tag The tag that closes this composite tag, i.e. </HTML>.

See Also: Tag

setTagName

public void setTagName(String name)
Set the name of this tag. This creates or replaces the first attribute of the tag (the zeroth element of the attribute vector).

Parameters: name The tag name.

See Also: Tag

setThisScanner

public void setThisScanner(Scanner scanner)
Set the scanner associated with this tag.

Parameters: scanner The scanner for this tag.

See Also: Tag

HTML Parser is an open source library released under LGPL. SourceForge.net