Java Code Examples for java.util.regex.Matcher

public String resolve(String string, ClassLoader loader) {
    String parsed = string;
    Matcher matcher = Pattern.compile("(?<!\\\\)\\$E\\{(.*?)\\}").matcher(parsed);
    while (matcher.find()) {
        try {
            String name = matcher.group(1);
            String value = SystemUtils.getEnvironmentVariable(name);
            if(value!=null) {
                parsed = parsed.replace(matcher.group(), value);
            }
        } catch (NativeException e) {
            ErrorManager.notifyDebug(StringUtils.format(
                    ERROR_CANNOT_PARSE_PATTERN, matcher.group()), e);
        }
    }
    return parsed;
}
 

private static QuerySet loadQueries(Path file) throws Exception {
    QuerySet querySet = new QuerySet();
    Matcher uc = Pattern.compile("[A-Z]").matcher("");
    try (InputStream is = Files.newInputStream(file)) {
        try (Reader reader = new InputStreamReader(new BOMInputStream(is), "UTF-8")) {
            Iterable<CSVRecord> records = CSVFormat.EXCEL
                    .withFirstRecordAsHeader().parse(reader);
            for (CSVRecord record : records) {
                String q = record.get("query");
                Integer c = Integer.parseInt(record.get("count"));
                if (querySet.queries.containsKey(q)) {
                    LOG.warn("duplicate queries?! >" + q + "<");
                }

                querySet.set(q, c);
            }
        }
    }
    LOG.info("loaded " + querySet.queries.size() + " queries");
    return querySet;
}
 

public CharSequence buildOrderLink(CharSequence content) {
    String c = content.toString();
    SpannableString sp = new SpannableString(c);
    if (enableOrderLink) {
        Matcher orderMatcher = PatternUtil.getOrderMatcher(c);
        while (orderMatcher.find()) {
            sp.setSpan(new OrderLinkSpan(c.substring(orderMatcher.start(), orderMatcher.end())),
                orderMatcher.start(), orderMatcher.end(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
        }
    }

    Matcher pkMatcher = PatternUtil.getPkMatcher(c);
    while (pkMatcher.find()) {
        sp.setSpan(new TokIdLinkSpan(c.substring(pkMatcher.start(), pkMatcher.end())),
            pkMatcher.start(), pkMatcher.end(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
    }
    setText(sp);
    setMovementMethod(LinkMovementMethod.getInstance());
    return sp;
}
 

private Multiplier multiplier(String expression, int offset) {
    Matcher matcher = MULTIPLIER_PREFIX_PATTERN.matcher(expression);
    if (!matcher.find()) {
        return null;
    }
    if (matcher.start() > 0) {
        fail(offset + matcher.start(), "illegal multiplier position");
    }
    Matcher digitMatcher = DIGIT_PATTERN.matcher(expression);
    if (!digitMatcher.find()) {
        return null;
    }
    String digitStr = expression.substring(0, digitMatcher.end());
    int number = 0;
    try {
        number = Integer.parseInt(digitStr);
    } catch (NumberFormatException e) {
        fail(offset, e);
    }
    if (number <= 0) {
        fail(offset, "illegal 0 multiplier");
    }
    String subexpression = expression.substring(matcher.end(), expression.length() - 1);
    return new Multiplier(number, subexpression, matcher.end());
}
 

@SuppressWarnings("resource")
private static final GroovyObject getGroovyObject(String rule)
		throws IllegalAccessException, InstantiationException {
	if (!RULE_CLASS_CACHE.containsKey(rule)) {
		synchronized (GroovyRuleEngine.class) {
			if (!RULE_CLASS_CACHE.containsKey(rule)) {
				Matcher matcher = DimensionRule.RULE_COLUMN_PATTERN.matcher(rule);
				StringBuilder engineClazzImpl = new StringBuilder(200)
						.append("class RuleEngineBaseImpl extends " + RuleEngineBase.class.getName() + "{")
						.append("Object execute(Map context) {").append(matcher.replaceAll("context.get(\"$1\")"))
						.append("}").append("}");
				GroovyClassLoader loader = new GroovyClassLoader(AbstractDimensionRule.class.getClassLoader());
				Class<?> engineClazz = loader.parseClass(engineClazzImpl.toString());
				RULE_CLASS_CACHE.put(rule, engineClazz);
			}
		}
	}
	return (GroovyObject) RULE_CLASS_CACHE.get(rule).newInstance();
}
 

/**
 * 密码验证
 *
 * @param  str
 * @return boolean 验证通过返回true
 */
public static boolean isPassword(String str) {
	StringUtils.trim(str);
	Pattern p = null;
	Matcher m = null;
	boolean b = false;
	if (str == null || str.length() < 6) {
		errMsg = "密码必须为6位以上";
		b = false;
	} else {
		b = true;
		errMsg = "";
	}

	return b;
}
 

public static List<Double[]> extractNumberPositions(String a) {
	//System.out.println("to be matched-->"+a);
	List<Double[]> numberlist=new ArrayList<Double[]>();
	Pattern pattern = Pattern.compile("[\\d\\.]+");
	Matcher matcher = pattern.matcher(a);
	while (matcher.find()) {
		Double[] numpos=new Double[3];
		//System.out.println(matcher.group()); // 打印
		if(matcher.group().equals(".")){
			continue;
		}
		//System.out.println("matcher="+matcher.group()+"startindex="+matcher.start()+",endindex="+matcher.end());	
		try{
			numpos[0]=Double.valueOf(matcher.group());
			numpos[1]=(double) matcher.start();
			numpos[2]=(double) matcher.end();
			numberlist.add(numpos);
		}catch (Exception ex){
			return null;
		}
	}
	return numberlist;
	
}
 

static Map<String, List<String>> getFsmEventMap(BufferedReader f) throws IOException {
    String s = f.readLine();
    Map<String, List<String>> map = new HashMap<String, List<String>>();
    while (s != null) {
        Matcher m = fsmPattern.matcher(s);
        if (m.find()) {
            String key = m.group(1);
            if (!map.containsKey(key)) {
                map.put(key, new ArrayList<String>());
            }
            map.get(key).add(s);
        }
        s = f.readLine();
    }
    return map;
}
 

private WatchingException buildWatchingException(String stream, File file, MojoExecutionException e) {
    String[] lines = stream.split("\n");
    for (String l : lines) {
        if (!Strings.isNullOrEmpty(l)) {
            stream = l.trim();
            break;
        }
    }
    final Matcher matcher = LESS_ERROR_PATTERN.matcher(stream);
    if (matcher.matches()) {
        String line = matcher.group(2);
        String character = matcher.group(3);
        String reason = matcher.group(1);
        return new WatchingException("Less Compilation Error", reason, file,
                Integer.valueOf(line), Integer.valueOf(character), null);
    } else {
        return new WatchingException("Less Compilation Error", stream, file, e.getCause());
    }
}
 

private String formatCondition(String condition, Collection<MatParam> matParams){
    //condition = condition.replaceAll("defined\\(","");

    String res = condition;
    Pattern pattern = Pattern.compile("defined\\(([A-Z0-9]*)\\)");
    Matcher m = pattern.matcher(condition);

    while(m.find()){
        String match = m.group(0);
        String defineName = m.group(1).toLowerCase();
        for (MatParam matParam : matParams) {
            if(matParam.getName().toLowerCase().equals(defineName)){
                res = res.replace(match, matParam.getName());
            }
        }
    }

    return res;
}
 

private AccessTokenCredential extractAuthTokenCredential(String authorizationHeader) {
    final Pattern BEARER_AUTH_EXTRACTOR_PATTERN = Pattern.compile("bearer (.*)", Pattern.CASE_INSENSITIVE);

    if (isBlank(authorizationHeader)) {
        return null;
    }

    final Matcher matcher = BEARER_AUTH_EXTRACTOR_PATTERN.matcher(authorizationHeader);
    if (matcher.matches()) {
        String token = matcher.group(1);
        AccessToken accessToken = accessTokenService.findByAccessToken(token);
        return new AccessTokenCredential(accessToken);
    }

    return null;
}
 

@Override
public void doProcessTextBlock(TextBlock block) throws AnalysisEngineProcessException {
  String text = block.getCoveredText();

  Matcher m = p.matcher(text);
  while (m.find()) {
    Entity ret;
    try {
      ret = block.newAnnotation(et, m.start(), m.end());
    } catch (Exception e) {
      throw new AnalysisEngineProcessException(e);
    }

    ret.setValue(m.group(patternGroup));

    ret.setConfidence(confidence);
    if (!Strings.isNullOrEmpty(subType)) {
      ret.setSubType(subType);
    }

    addToJCasIndex(ret);
  }
}
 

/**
 * Check for labels in a line and save it
 *
 * @param line          Line to check
 * @param result        Current assembly result
 * @param currentOffset Current offset in bytes
 */
private static void checkForLabel(String line, AssemblyResult result, char currentOffset) {

    line = removeComment(line);

    //Check for labels
    Pattern pattern = Pattern.compile(labelPattern);
    Matcher matcher = pattern.matcher(line);

    if (matcher.find()) {
        String label = matcher.group(0).substring(0, matcher.group(0).length() - 1).trim();

        LogManager.LOGGER.fine("DEBUG: Label " + label + " @ " + (result.origin + currentOffset));
        result.labels.put(label, (char) (result.origin + currentOffset));
    }
}
 

/**
 * Replace a pattern in a string.
 * <p>
 * Do not do recursive replacement. Return the original string if no changes
 * are required.
 * 
 * @param s
 *            The string to search.
 * 
 * @param p
 *            The pattern to search for.
 * 
 * @param r
 *            The string to replace occurrences with.
 * 
 * @return The new string.
 */
static String replaceAll(String s, Pattern p, String r) {
    int n = s == null ? 0 : s.length();
    if (n == 0) {
        return s;
    }
    Matcher m = p.matcher(s);
    if (!m.find()) {
        return s;
    }
    StringBuilder buf = new StringBuilder(n + 12);
    int k = 0;
    do {
        buf.append(s, k, m.start());
        buf.append(r);
        k = m.end();
    } while (m.find());
    if (k < n) {
        buf.append(s, k, n);
    }
    return buf.toString();
}
 

@Override
public Tuple getNext() throws IOException {
  Pattern pattern = getPattern();
  Matcher matcher = pattern.matcher("");
  TupleFactory mTupleFactory = DefaultTupleFactory.getInstance();
  String line;
  
  while (in.nextKeyValue()) {
 Text val = in.getCurrentValue();
    line = val.toString();
    if (line.length() > 0 && line.charAt(line.length() - 1) == '\r') {
      line = line.substring(0, line.length() - 1);
    }
    matcher = matcher.reset(line);
    ArrayList<DataByteArray> list = new ArrayList<DataByteArray>();
    if (matcher.find()) {
      for (int i = 1; i <= matcher.groupCount(); i++) {
        list.add(new DataByteArray(matcher.group(i)));
      }
      return mTupleFactory.newTuple(list);  
    }
  }
  return null;
}
 

private static boolean isNewerVersion(StringBuilder text, String v2) {
	try {
		// System.out.println(text);
		Matcher matcher = PATTERN_TAG.matcher(text);
		if (matcher.find()) {
			String v1 = matcher.group(1);
			System.out.println(v1 + " " + v2);
			if (v1.indexOf(".") > 0 && v2.indexOf(".") > 0) {
				String[] arr1 = v1.split("\\.");
				String[] arr2 = v2.split("\\.");
				for (int i = 0; i < Math.min(arr1.length,
						arr2.length); i++) {
					int ia = Integer.parseInt(arr1[i]);
					int ib = Integer.parseInt(arr2[i]);
					if (ia > ib) {
						return true;
					}
				}
			}
		}
	} catch (Exception e) {
		e.printStackTrace();
	}
	return false;
}
 

@Override
public String getResponse(String messageText) {
    Matcher matcher = DICE_ROLL_PATTERN.matcher(messageText);
    if (matcher.matches()) {
        int numDice = Math.min(Integer.parseInt(matcher.group("dice")), MAX_DICE);
        int numSides = Math.min(Integer.parseInt(matcher.group("sides")), MAX_SIDES);
        String flag = matcher.group("flag");
        boolean sorted = flag != null && flag.equalsIgnoreCase("מ");
        IntStream randoms = RANDOM.ints(numDice, 1, numSides + 1);
        if (sorted) {
            randoms = randoms.sorted();
        }
        String randomString = randoms.mapToObj(String::valueOf).collect(Collectors.joining(", ", "[", "]"));
        return String.format("%dק%d: %s", numDice, numSides, randomString);
    }
    return null;
}
 

@Nullable
public static Result parse(String url, boolean strict) {
    if (url == null) {
        return null;
    }

    Pattern pattern = strict ? URL_STRICT_PATTERN : URL_PATTERN;
    Matcher m = pattern.matcher(url);
    if (m.find()) {
        Result result = new Result();
        result.gid = NumberUtils.parseLongSafely(m.group(2), -1L);
        result.pToken = m.group(1);
        result.page = NumberUtils.parseIntSafely(m.group(3), 0) - 1;
        if (result.gid < 0 || result.page < 0) {
            return null;
        }
        return result;
    } else {
        return null;
    }
}
 

/**
 * replace existing spannable with smiles
 * @param context
 * @param spannable
 * @return
 */
public static boolean addSmiles(Context context, Spannable spannable) {
    boolean hasChanges = false;
    for (Entry<Pattern, Integer> entry : emoticons.entrySet()) {
        Matcher matcher = entry.getKey().matcher(spannable);
        while (matcher.find()) {
            boolean set = true;
            for (ImageSpan span : spannable.getSpans(matcher.start(),
                    matcher.end(), ImageSpan.class))
                if (spannable.getSpanStart(span) >= matcher.start()
                        && spannable.getSpanEnd(span) <= matcher.end())
                    spannable.removeSpan(span);
                else {
                    set = false;
                    break;
                }
            if (set) {
                hasChanges = true;
                spannable.setSpan(new ImageSpan(context, entry.getValue()),
                        matcher.start(), matcher.end(),
                        Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
            }
        }
    }
    return hasChanges;
}
 

public static String replaceRegexs(String srcUrl, String regex, Map<String, String> params) {
	if(params == null) {
		return srcUrl;
	}
	StringBuffer sb = new StringBuffer();
	Pattern pattern = Pattern.compile(regex);
	Matcher matcher = pattern.matcher(srcUrl);
	while(matcher.find()) {
		String name = matcher.group(1);
		String value = params.get(name);
		if(StringUtils.isNotEmpty(value)) {
			matcher.appendReplacement(sb, value);
		}
	}
	matcher.appendTail(sb);
	return sb.toString();
}
 

/**********************************************************
 *
 * @param selectedfile
 * @param wildcard
 * @return True if the selectedfile matches the wildcard
 **********************************************************/
private boolean GetFileWildcard( String selectedfile, String wildcard ) {
  Pattern pattern = null;
  boolean getIt = true;

  if ( !Utils.isEmpty( wildcard ) ) {
    pattern = Pattern.compile( wildcard );
    // First see if the file matches the regular expression!
    if ( pattern != null ) {
      Matcher matcher = pattern.matcher( selectedfile );
      getIt = matcher.matches();
    }
  }

  return getIt;
}
 

@Override
void showFile(Example e, File f) {
    out.println("--- " + f);
    String text;
    try {
        text = read(f);
    } catch (IOException ex) {
        text = "Error reading " + f + "; " + ex;
    }
    Matcher m = copyrightHeaderPat.matcher(text);
    if (m.matches()) {
        out.println("(Copyright)");
        writeLines(m.group(2));
    } else {
        writeLines(text);
    }
    out.println();
}
 

/**
 * 判断电话号码是否有效
 *
 * @param phoneNumber
 * @return true 有效 / false 无效
 */
public static boolean isPhoneNumberValid(String phoneNumber) {

    boolean isValid = false;

    String expression = "((^(13|15|18)[0-9]{9}$)|(^0[1,2]{1}\\d{1}-?\\d{8}$)|(^0[3-9] {1}\\d{2}-?\\d{7,8}$)|(^0[1,2]{1}\\d{1}-?\\d{8}-(\\d{1,4})$)|(^0[3-9]{1}\\d{2}-? \\d{7,8}-(\\d{1,4})$))";
    CharSequence inputStr = phoneNumber;

    Pattern pattern = Pattern.compile(expression);
    Matcher matcher = pattern.matcher(inputStr);

    if (matcher.matches()) {
        isValid = true;
    }
    return isValid;
}
 

public static TrustManager[] createTrustManagers(String cacert) throws GeneralSecurityException, IOException {

        CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");

        KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
        keyStore.load(null);

        String certBundle = new String(Files.readAllBytes(Paths.get(cacert)), StandardCharsets.UTF_8);
        int start = 0;
        int count = 0;
        Matcher matcher = certBundlePattern.matcher(certBundle);

        while (matcher.find(start)) {
            ByteArrayInputStream inStream = new ByteArrayInputStream(matcher.group().getBytes(StandardCharsets.UTF_8));
            X509Certificate certificate = (X509Certificate) certificateFactory.generateCertificate(inStream);
            keyStore.setCertificateEntry("cert_" + count++, certificate);
            start = matcher.end();
        }

        TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(getDefaultAlgorithm());
        trustManagerFactory.init(keyStore);
        return trustManagerFactory.getTrustManagers();
    }
 

/**
 * Gets and splits exported variables separated by a comma.
 * <p>
 * Variable names are not prefixed by the type's name.<br />
 * Variable values may also be surrounded by quotes.
 * </p>
 *
 * @param exportedVariablesDecl the declaration to parse
 * @param sourceFile the source file
 * @param lineNumber the line number
 * @return a non-null map (key = exported variable name, value = the exported variable)
 */
public static Map<String,ExportedVariable> findExportedVariables( String exportedVariablesDecl, File sourceFile, int lineNumber ) {

	Map<String,ExportedVariable> result = new HashMap<> ();
	Pattern pattern = Pattern.compile( ParsingConstants.PROPERTY_GRAPH_RANDOM_PATTERN, Pattern.CASE_INSENSITIVE );
	ExportedVariablesParser exportsParser = new ExportedVariablesParser();
	exportsParser.parse( exportedVariablesDecl, sourceFile, lineNumber );

	for( Map.Entry<String,String> entry : exportsParser.rawNameToVariables.entrySet()) {
		ExportedVariable var = new ExportedVariable();
		String variableName = entry.getKey();

		Matcher m = pattern.matcher( variableName );
		if( m.matches()) {
			var.setRandom( true );
			var.setRawKind( m.group( 1 ));
			variableName = m.group( 2 ).trim();
		}

		var.setName( variableName );
		var.setValue( entry.getValue());
		result.put( var.getName(), var );
	}

	return result;
}
 

private void verifyTrimmedRDotJava(ImmutableSet<String> expected) throws IOException {
  List<String> lines =
      filesystem.readLines(
          BuildTargetPaths.getGenPath(
                  filesystem,
                  BuildTargetFactory.newInstance("//apps/multidex:disassemble_app_r_dot_java"),
                  "%s")
              .resolve("all_r_fields.smali"));

  ImmutableSet.Builder<String> found = ImmutableSet.builder();
  for (String line : lines) {
    Matcher m = SMALI_STATIC_FINAL_INT_PATTERN.matcher(line);
    assertTrue("Could not match line: " + line, m.matches());
    assertThat(m.group(1), IsIn.in(expected));
    found.add(m.group(1));
  }
  assertEquals(expected, found.build());
}
 

@Override
public String getGID(URL url) throws MalformedURLException {
    Pattern p;
    Matcher m;

    p = Pattern.compile("^https?://[wm.]*bcfakes.com/celebritylist/([a-zA-Z0-9\\-_]+).*$");
    m = p.matcher(url.toExternalForm());
    if (m.matches()) {
        return m.group(1);
    }

    throw new MalformedURLException(
            "Expected bcfakes gallery format: "
                    + "http://www.bcfakes.com/celebritylist/name"
                    + " Got: " + url);
}
 

public String parseStatus(Collection<String> lines) {
  for (String line : lines) {
    for (Pattern pattern : PATTERNS) {
      Matcher matcher = pattern.matcher(line);
      if (matcher.matches()) {
        String input = matcher.group(1);
        String output = Strings.nullToEmpty(STATE_MAP.get(input));
        if (!output.isEmpty()) {
          return output;
        }
      }
    }
  }
  String msg = "Could not match any YARN status";
  LOG.error(msg + ":" + Joiner.on("\n").join(lines));
  throw new IllegalStateException(msg + ". See logs.");
}
 

@Override
protected void print(ExportHelper helper, EventLookupRpcRequest request, List<EventInterface> events, int eventCookieFlags, EventMeetingSortBy sort, boolean asc) throws IOException {
	helper.setup("application/json", reference(), false);
	
   	Gson gson = new GsonBuilder().registerTypeAdapter(Date.class, new JsonSerializer<Date>() {
		@Override
		public JsonElement serialize(Date src, Type typeOfSrc, JsonSerializationContext context) {
			return new JsonPrimitive(new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'").format(src));
		}
	})
	.setFieldNamingStrategy(new FieldNamingStrategy() {
		Pattern iPattern = Pattern.compile("i([A-Z])(.*)");
		@Override
		public String translateName(Field f) {
			Matcher matcher = iPattern.matcher(f.getName());
			if (matcher.matches())
				return matcher.group(1).toLowerCase() + matcher.group(2);
			else
				return f.getName();
		}
	})
	.setPrettyPrinting().create();
   	
   	helper.getWriter().write(gson.toJson(events));
}
 

public static void main(String[] args) {
	// using pattern with flags
	Pattern pattern = Pattern.compile("ab", Pattern.CASE_INSENSITIVE);
	Matcher matcher = pattern.matcher("ABcabdAb");
	// using Matcher find(), group(), start() and end() methods
	while (matcher.find()) {
		System.out.println("Found the text \"" + matcher.group()
				+ "\" starting at " + matcher.start()
				+ " index and ending at index " + matcher.end());
	}

	// using Pattern split() method
	pattern = Pattern.compile("\\W");
	String[] words = pattern.split("[email protected]#three:four$five");
	for (String s : words) {
		System.out.println("Split using Pattern.split(): " + s);
	}

	// using Matcher.replaceFirst() and replaceAll() methods
	pattern = Pattern.compile("1*2");
	matcher = pattern.matcher("11234512678");
	System.out.println("Using replaceAll: " + matcher.replaceAll("_"));
	System.out.println("Using replaceFirst: " + matcher.replaceFirst("_"));
	System.out.println(Pattern.quote("^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$"));
}