Examples of java.util.regex.Matcher.find()

java.util.regex.Matcher.find()
Attempts to find the next subsequence of the input sequence that matches the pattern.
This method starts at the beginning of this matcher's region, or, if a previous invocation of the method was successful and the matcher has not since been reset, at the first character not matched by the previous match.
If the match succeeds then more information can be obtained via the start, end, and group methods.
@return true if, and only if, a subsequence of the inputsequence matches this matcher's pattern

    Pattern pattern;
    Matcher matcher;


    pattern = Pattern.compile("bc://bt/([a-z0-9=\\+/]+)", Pattern.CASE_INSENSITIVE);
    matcher = pattern.matcher(text.replaceAll(" ", "+"));
    if (matcher.find()) {
      String base64 = matcher.group(1);
      byte[] decode = Base64.decode(base64);
      if (decode != null && decode.length > 0) {
        // Format is AA/<name>/<size>/<hash>/ZZ
        try {

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        // Format is AA/<name>/<size>/<hash>/ZZ
        try {
          String decodeString = new String(decode, "utf8");
          pattern = Pattern.compile("AA.*/(.*)/ZZ", Pattern.CASE_INSENSITIVE);
          matcher = pattern.matcher(decodeString);
          if (matcher.find()) {
            String hash = matcher.group(1);
            String magnet = parseTextForMagnets(hash);
            if (magnet != null) {
              pattern = Pattern.compile("AA/(.*)/[0-9]+", Pattern.CASE_INSENSITIVE);
              matcher = pattern.matcher(decodeString);

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            String hash = matcher.group(1);
            String magnet = parseTextForMagnets(hash);
            if (magnet != null) {
              pattern = Pattern.compile("AA/(.*)/[0-9]+", Pattern.CASE_INSENSITIVE);
              matcher = pattern.matcher(decodeString);
              if (matcher.find()) {
                String name = matcher.group(1);
                return magnet + "&dn=" + encode(name);
              }
              return magnet;
            }

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      }
    }


    pattern = Pattern.compile("bctp://task/(.*)", Pattern.CASE_INSENSITIVE);
    matcher = pattern.matcher(text);
    if (matcher.find()) {
      // Format is <name>/<size>/<hash>
      String decodeString = matcher.group(1);
      String magnet = parseTextForMagnets(decodeString);
      if (magnet != null) {
        pattern = Pattern.compile("(.*)/[0-9]+", Pattern.CASE_INSENSITIVE);

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      String decodeString = matcher.group(1);
      String magnet = parseTextForMagnets(decodeString);
      if (magnet != null) {
        pattern = Pattern.compile("(.*)/[0-9]+", Pattern.CASE_INSENSITIVE);
        matcher = pattern.matcher(decodeString);
        if (matcher.find()) {
          String name = matcher.group(1);
          return magnet + "&dn=" + encode(name);
        }
        return magnet;
      }

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    // accept raw hash of 32 base-32 chars, with garbage around it
    if (true) {
      text = "!" + text + "!";
      pattern = Pattern.compile("[^a-zA-Z2-7][a-zA-Z2-7]{32}[^a-zA-Z2-7]");
      matcher = pattern.matcher(text);
      if (matcher.find()) {
        String hash = text.substring(matcher.start() + 1, matcher.start() + 33);
        return "magnet:?xt=urn:btih:" + hash;
      }


      pattern = Pattern.compile("[^a-fA-F0-9][a-fA-F0-9]{40}[^a-fA-F0-9]");

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        return "magnet:?xt=urn:btih:" + hash;
      }


      pattern = Pattern.compile("[^a-fA-F0-9][a-fA-F0-9]{40}[^a-fA-F0-9]");
      matcher = pattern.matcher(text);
      if (matcher.find()) {
        String hash = text.substring(matcher.start() + 1, matcher.start() + 41);
        // convert from HEX to raw bytes
        byte[] infohash = ByteFormatter.decodeString(hash.toUpperCase());
        // convert to BASE32
        return "magnet:?xt=urn:btih:" + Base32.encode(infohash);

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    // <a href="http://www.gnu.org/licenses/fdl.html" target="_top">moo</a>


    Pattern pat = Pattern.compile("<.*a\\s++.*href=\"?([^\\'\"\\s>]++).*",
        Pattern.CASE_INSENSITIVE);
    Matcher m = pat.matcher(text);
    if (m.find()) {
      String sURL = m.group(1);
      try {
        sURL = URLDecoder.decode(sURL);
      } catch (Exception e) {
        // sometimes fires a IllegalArgumentException

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            // special treatment for function keys
            if(!funcVisited)
            {
                final Matcher funcMatcher = FUNC_EXP.matcher(value);
                if(funcMatcher.find() && funcMatcher.start() == 0 && funcMatcher.end() == value.length())
                {
                    final int funcVal = Integer.parseInt(funcMatcher.group(2));


                    // SWT.F1 is (1 << 24) + 10
                    swtAccelerator = swtAccelerator | ((1 << 24) + (9 + funcVal));

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            if(matched)
                continue;


            final Matcher valMatcher = SANCTIONED_EXP.matcher(value);
            if(valMatcher.find() && valMatcher.start() == 0)
            {
                final char c = valMatcher.group().charAt(0);


                // avoid possible duplicates (\t is index 0)
                final int subStrIndex = displayValue.indexOf(c + DELIM);

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