Utils.java

package com.sun.bingo.util.UrlParse;

import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Utils {

	public static final int ALL = 0;
	public static final int FIRST = 1;

	public static String pregMatch(String content, String pattern, int index) {

		String match = "";
		Matcher matcher = Pattern.compile(pattern).matcher(content);

		while (matcher.find()) {
			match = matcher.group(index);
			break;
		}

		return TextCrawler.extendedTrim(match);
	}

	public static List<String> pregMatchAll(String content, String pattern,
                                            int index) {

		List<String> matches = new ArrayList<String>();
		Matcher matcher = Pattern.compile(pattern).matcher(content);

		while (matcher.find()) {
			matches.add(TextCrawler.extendedTrim(matcher.group(index)));
		}

		return matches;
	}

	public static List<String> pregMatchAllImages(String content, String pattern) {

		List<String> matches = new ArrayList<String>();
		Matcher matcher = Pattern.compile(pattern).matcher(content);

		while (matcher.find()) {
			matches.add(TextCrawler.extendedTrim(matcher.group(3))
					+ matcher.group(4));
		}

		return matches;
	}

	public static List<String> pregMatchAllExtraImages(String content,
                                                       String pattern) {

		List<String> matches = new ArrayList<String>();
		Matcher matcher = Pattern.compile(pattern).matcher(content);

		while (matcher.find()) {
			matches.add(TextCrawler.extendedTrim(matcher.group(3))
					+ matcher.group(4));
		}

		return matches;
	}



	/** It finds urls inside the text and return the matched ones */
	public static ArrayList<String> matches(String text) {
		return matches(text, ALL);
	}

	/** It finds urls inside the text and return the matched ones */
	public static ArrayList<String> matches(String text, int results) {

		ArrayList<String> urls = new ArrayList<String>();

		String[] splitString = (text.split(" "));
		for (String string : splitString) {

			try {
				URL item = new URL(string);
				urls.add(item.toString());
			} catch (Exception e) {
			}

			if (results == FIRST && urls.size() > 0)
				break;
		}

		return urls;
	}



}