net.sourceforge.rssowl.util.shop
Class RegExShop

java.lang.Object
  net.sourceforge.rssowl.util.shop.RegExShop

public class RegExShop

extends Object

Factory class for regular expression concerns in RSSOwl

Version:

1.1.3

Author:

Benjamin Pasero

Field Summary

private static String	HTML_ANCHOR_REGEX The reg. expression to match HTML Anchors
private static Pattern	HTML_ANCHOR_REGEX_PATTERN The compiled pattern to match HTML Anchors (is Case Insensitive)
(package private) static String	HTML_TAG_REGEX The reg. expression for HTML tags
(package private) static Pattern	HTML_TAG_REGEX_PATTERN The compiled pattern to match HTML tags
static String	REGEX_OK Constant to show that regex was compiled successfully
private static String[]	regExSymbols List of common RegEx special chars
private static String	URL_REGEX The reg. expression for an URL
private static Pattern	URL_REGEX_PATTERN The compiled pattern to match an URL
(package private) static Pattern	WHITESPACE_PATTERN The compiled pattern to match Whitespaces
private static String	WHITESPACE_REGEX The reg. expression to match Whitespaces

Constructor Summary

private

RegExShop() This utility class constructor is hidden

Method Summary

static String	compileRegEx(String str) Compile a String and return either "OK" if the String is a valid RegEx, or the warning message if not.
static String	escapeRegEx(String str) Escape RegEx special chars from the String and return it.
static void	extractLinksFromHTML(String text, Vector linkList) Extract all links from the given String and fill them into the given HashSet.
static void	extractLinksFromText(String text, Vector linkList) Extract all links from the given String and fill them into the given HashSet.
static boolean	isInsideTags(String haystack, String needle) Returns TRUE in case the needle is surrounded by tags or includes tags inside the haystack
static boolean	isValidURL(String url) Check if the given URL is valid

Methods inherited from class java.lang.Object

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

Field Detail

REGEX_OK

public static final String REGEX_OK

Constant to show that regex was compiled successfully

See Also:

Constant Field Values

HTML_ANCHOR_REGEX

private static final String HTML_ANCHOR_REGEX

The reg. expression to match HTML Anchors

See Also:

Constant Field Values

HTML_ANCHOR_REGEX_PATTERN

private static final Pattern HTML_ANCHOR_REGEX_PATTERN

The compiled pattern to match HTML Anchors (is Case Insensitive)

regExSymbols

private static final String[] regExSymbols

List of common RegEx special chars

URL_REGEX

private static final String URL_REGEX

The reg. expression for an URL

See Also:

Constant Field Values

URL_REGEX_PATTERN

private static final Pattern URL_REGEX_PATTERN

The compiled pattern to match an URL

WHITESPACE_REGEX

private static final String WHITESPACE_REGEX

The reg. expression to match Whitespaces

See Also:

Constant Field Values

HTML_TAG_REGEX

static final String HTML_TAG_REGEX

The reg. expression for HTML tags

See Also:

Constant Field Values

HTML_TAG_REGEX_PATTERN

static final Pattern HTML_TAG_REGEX_PATTERN

The compiled pattern to match HTML tags

WHITESPACE_PATTERN

static final Pattern WHITESPACE_PATTERN

The compiled pattern to match Whitespaces

Constructor Detail

RegExShop

private RegExShop()

This utility class constructor is hidden

Method Detail

compileRegEx

public static String compileRegEx(String str)

Compile a String and return either "OK" if the String is a valid RegEx, or the warning message if not.

Parameters:

str - Any String interpreted as RegEx

Returns:

String The Result of the compilation

escapeRegEx

public static String escapeRegEx(String str)

Escape RegEx special chars from the String and return it.

Parameters:

str - Any String

Returns:

String RegEx escaped String

extractLinksFromHTML

public static void extractLinksFromHTML(String text,
                                        Vector linkList)

Extract all links from the given String and fill them into the given HashSet. This method considers relative links too. Only use this method if the Text is using HTML links in anchor-tags.

Parameters:

text - The String to search for links

linkList - The collection to fill

extractLinksFromText

public static void extractLinksFromText(String text,
                                        Vector linkList)

Extract all links from the given String and fill them into the given HashSet. This method will NOT consider relative links. Only use this method when you are searching for absolute links in a text (which may also be HTML).

Parameters:

text - The String to search for links

linkList - The collection to fill

isInsideTags

public static boolean isInsideTags(String haystack,
                                   String needle)

Returns TRUE in case the needle is surrounded by tags or includes tags inside the haystack

Parameters:

haystack - The String to search for tags

needle - The String to check if surrounded by tags

Returns:

boolean TRUE in case the needle is surrounded by tags

isValidURL

public static boolean isValidURL(String url)

Check if the given URL is valid

Parameters:

url - The URL to check

Returns:

boolean TRUE if the link is valid