org.archive.extractor
Class RegexpCSSLinkExtractor

java.lang.Object
  org.archive.extractor.CharSequenceLinkExtractor
      org.archive.extractor.RegexpCSSLinkExtractor

All Implemented Interfaces:

java.util.Iterator, LinkExtractor

public class RegexpCSSLinkExtractor
extends CharSequenceLinkExtractor

This extractor is parsing URIs from CSS type files. The format of a CSS URL value is 'url(' followed by optional white space followed by an optional single quote (') or double quote (") character followed by the URL itself followed by an optional single quote (') or double quote (") character followed by optional white space followed by ')'. Parentheses, commas, white space characters, single quotes (') and double quotes (") appearing in a URL must be escaped with a backslash: '\(', '\)', '\,'. Partial URLs are interpreted relative to the source of the style sheet, not relative to the document. Source: www.w3.org ROUGH DRAFT IN PROGRESS / incomplete... untested... major changes likely

Author:

igor gojomo

Field Summary

(package private) static java.lang.String	CSS_BACKSLASH_ESCAPE
(package private) static java.lang.String	CSS_URI_EXTRACTOR CSS URL extractor pattern.
protected java.util.regex.Matcher	uris

Fields inherited from class org.archive.extractor.CharSequenceLinkExtractor

base, extractErrorListener, next, source, sourceContent

Constructor Summary

RegexpCSSLinkExtractor()

Method Summary

protected boolean	findNextLink() Scan to the next link(s), if any, loading it into the next buffer.
protected static CharSequenceLinkExtractor	newDefaultInstance()
void	reset() Discard all state.

Methods inherited from class org.archive.extractor.CharSequenceLinkExtractor

charSequenceFrom, createCharSequenceFrom, extract, hasNext, next, nextLink, remove, setup, setup, setup, setup

Methods inherited from class java.lang.Object

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

Field Detail

CSS_BACKSLASH_ESCAPE

static final java.lang.String CSS_BACKSLASH_ESCAPE

See Also:

Constant Field Values

uris

protected java.util.regex.Matcher uris

CSS_URI_EXTRACTOR

static final java.lang.String CSS_URI_EXTRACTOR

CSS URL extractor pattern. This pattern extracts URIs for CSS files

See Also:

Constant Field Values

Constructor Detail

RegexpCSSLinkExtractor

public RegexpCSSLinkExtractor()

Method Detail

findNextLink

protected boolean findNextLink()

Description copied from class: CharSequenceLinkExtractor

Scan to the next link(s), if any, loading it into the next buffer.

Specified by:

findNextLink in class CharSequenceLinkExtractor

Returns:

true if any links are found/available, false otherwise

reset

public void reset()

Description copied from class: CharSequenceLinkExtractor

Discard all state. Another setup() is required to use again.

Specified by:

reset in interface LinkExtractor

Overrides:

reset in class CharSequenceLinkExtractor

newDefaultInstance

protected static CharSequenceLinkExtractor newDefaultInstance()