Android Open Source - Android-Link-Preview Regex

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License

The source code is released under:

Apache License

Java Source Code

package com.leocardz.link.preview.library;
//from  w ww  .  j  ava2s . c o  m
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Regex {
  public static final String IMAGE_PATTERN = "(.+?)\\.(jpg|png|gif|bmp)$";
  public static final String IMAGE_TAG_PATTERN = "<img(.*?)src=(\"|')(.+?)(gif|jpg|png|bmp)(\"|')(.*?)(/)?>(</img>)?";
  public static final String ICON_TAG_PATTERN = "<img(.*?)src=(\"|')(.+?)(gif|jpg|png|bmp)(\"|')(.*?)(/)?>(</img>)?";
  public static final String ICON_REV_TAG_PATTERN = "<img(.*?)src=(\"|')(.+?)(gif|jpg|png|bmp)(\"|')(.*?)(/)?>(</img>)?";
  public static final String ITEMPROP_IMAGE_TAG_PATTERN = "<img(.*?)src=(\"|')(.+?)(gif|jpg|png|bmp)(\"|')(.*?)(/)?>(</img>)?";
  public static final String ITEMPROP_IMAGE_REV_TAG_PATTERN = "<img(.*?)src=(\"|')(.+?)(gif|jpg|png|bmp)(\"|')(.*?)(/)?>(</img>)?";
  public static final String TITLE_PATTERN = "<title(.*?)>(.*?)</title>";
  public static final String SCRIPT_PATTERN = "<script(.*?)>(.*?)</script>";
  public static final String METATAG_PATTERN = "<meta(.*?)>";
  public static final String METATAG_CONTENT_PATTERN = "content=\"(.*?)\"";
  public static final String URL_PATTERN = "<\\b(https?|ftp|file)://[-a-zA-Z0-9+&@#/%?=~_|!:,.;]*[-a-zA-Z0-9+&@#/%=~_|]>";

  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;
  }
}

Java Source Code List

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