java.util.regex.Pattern Java Examples

/**
 * 邮箱格式是否正确
 *
 * @param email
 * @return
 */
public static boolean isEmail(String email) {

    if (TextUtils.isEmpty(email))
        return false;

    String expression = "^[\\w\\.-]+@([\\w\\-]+\\.)+[A-Z]{2,4}$";

    Pattern pattern = Pattern.compile(expression, Pattern.CASE_INSENSITIVE);
    Matcher matcher = pattern.matcher(email);

    if (matcher.matches())
        return true;
    else
        return false;

}
 

@Test(dataProvider="schemagenGenerationData")
public void schemangenGenerationTestCase(String shortTestName,
        String inputFileName, String regexp) throws IOException {
    //Create test case directory
    Path testCaseDir = testWorkDir.resolve(shortTestName);
    Files.createDirectories(testCaseDir);
    //Copy java source from test.src to the test case dir
    Files.copy(testSrcDir.resolve(inputFileName), testCaseDir.resolve(inputFileName), REPLACE_EXISTING);
    //Run schemagen
    runSchemaGen(inputFileName, testCaseDir);
    //Check if schema file generated
    Assert.assertTrue(Files.exists(testCaseDir.resolve(SCHEMA_FILE)));
    //Read schema content from file
    String content = Files.lines(testCaseDir.resolve(SCHEMA_FILE)).collect(Collectors.joining(""));
    System.out.println("Generated schema: " + content);
    //Check if schema contains expected content
    Assert.assertTrue(Pattern.matches(regexp, content));
}
 

private static List<String> sparkClasspath() {
  String sparkJars = System.getProperty("spark.jars");
  Pattern isKotlinJar = Pattern.compile("/kotlin-[a-z]*(-.*)?\\.jar");

  Stream<File> addedJars = Arrays.stream(Utils.resolveURIs(sparkJars).split(","))
      .filter(s -> !s.trim().equals(""))
      .filter(s -> !isKotlinJar.matcher(s).find())
      .map(s -> {
        int p = s.indexOf(':');
        return new File(s.substring(p + 1));
      });

  Stream<File> systemJars = Arrays.stream(
      System.getProperty("java.class.path").split(File.pathSeparator))
      .map(File::new);

  return Stream.concat(addedJars, systemJars)
      .map(file -> {
        try {
          return file.getCanonicalPath();
        } catch (IOException e) {
          return "";
        }
      })
      .collect(Collectors.toList());
}
 

private static Map<String, String> getInlineCommentDocsVars(@NotNull PsiElement twigCompositeElement) {
    Map<String, String> variables = new HashMap<>();

    for(PsiElement psiComment: YamlHelper.getChildrenFix(twigCompositeElement)) {
        if(!(psiComment instanceof PsiComment)) {
            continue;
        }

        String text = psiComment.getText();
        if(StringUtils.isBlank(text)) {
            continue;
        }

        for (Pattern pattern : INLINE_DOC_REGEX) {
            Matcher matcher = pattern.matcher(text);
            while (matcher.find()) {
                variables.put(matcher.group("var"), matcher.group("class"));
            }
        }
    }

    return variables;
}
 

/**
 * Extract class from inline variables
 *
 * {# @var \AppBundle\Entity\Foo variable #}
 * {# @var variable \AppBundle\Entity\Foo #}
 */
@NotNull
private Collection<PhpClass> getVarClassGoto(@NotNull PsiElement psiElement) {
    String comment = psiElement.getText();

    if(StringUtils.isBlank(comment)) {
        return Collections.emptyList();
    }

    for(String pattern: TwigTypeResolveUtil.DOC_TYPE_PATTERN_SINGLE) {
        Matcher matcher = Pattern.compile(pattern).matcher(comment);
        if (matcher.find()) {
            String className = matcher.group("class");
            if(StringUtils.isNotBlank(className)) {
                return PhpElementsUtil.getClassesInterface(psiElement.getProject(), className);
            }
        }
    }

    return Collections.emptyList();
}
 

void check(String out, int count) {
    System.err.println(out);
    Pattern warn = Pattern.compile("warning - @param argument \"i[0-9]+\" is not a parameter name");
    Matcher m = warn.matcher(out);
    int n = 0;
    for (int start = 0; m.find(start); start = m.start() + 1) {
        n++;
    }
    if (n != count)
        error("unexpected number of warnings reported: " + n + "; expected: " + count);

    Pattern warnCount = Pattern.compile("(?ms).*^([0-9]+) warnings$.*");
    m = warnCount.matcher(out);
    if (m.matches()) {
        n = Integer.parseInt(m.group(1));
        if (n != count)
            error("unexpected number of warnings reported: " + n + "; expected: " + count);
    } else
        error("total count not found");
}
 

/**
 * 正则替换指定值<br>
 * 通过正则查找到字符串，然后把匹配到的字符串加入到replacementTemplate中，$1表示分组1的字符串
 * 
 * @param content 文本
 * @param pattern {@link Pattern}
 * @param replacementTemplate 替换的文本模板，可以使用$1类似的变量提取正则匹配出的内容
 * @return 处理后的文本
 * @since 3.0.4
 */
public static String replaceAll(String content, Pattern pattern, String replacementTemplate) {
	if (StrUtil.isEmpty(content)) {
		return content;
	}

	final Matcher matcher = pattern.matcher(content);
	boolean result = matcher.find();
	if (result) {
		final Set<String> varNums = findAll(PatternPool.GROUP_VAR, replacementTemplate, 1, new HashSet<String>());
		final StringBuffer sb = new StringBuffer();
		do {
			String replacement = replacementTemplate;
			for (String var : varNums) {
				int group = Integer.parseInt(var);
				replacement = replacement.replace("$" + var, matcher.group(group));
			}
			matcher.appendReplacement(sb, escape(replacement));
			result = matcher.find();
		} while (result);
		matcher.appendTail(sb);
		return sb.toString();
	}
	return content;
}
 

private static String resolveValue( Properties properties, String name ) {
  String value = properties.getProperty( name );
  Pattern pattern = Pattern.compile( ".*?(\\$\\{)(.*?)(\\}).*" );
  Matcher matcher = pattern.matcher( value );
  while( matcher.matches() ) {
    StringBuilder resolvedValue = new StringBuilder( value.length() );
    resolvedValue.append( value.substring( 0, matcher.start( 1 ) ) );
    String varName = matcher.group( 2 );
    String varVal = properties.getProperty( varName );
    if( varVal != null ) {
      resolvedValue.append( varVal );
    }
    resolvedValue.append( value.substring( matcher.end( 3 ) ) );
    value = resolvedValue.toString();
    matcher = pattern.matcher( value );
  }
  return value;
}
 

public static boolean renameDict(final File dictFile, final File newDictFile) {
    if (dictFile.isFile()) {
        return dictFile.renameTo(newDictFile);
    } else if (dictFile.isDirectory()) {
        final String dictName = dictFile.getName();
        final String newDictName = newDictFile.getName();
        if (newDictFile.exists()) {
            return false;
        }
        for (final File file : dictFile.listFiles()) {
            if (!file.isFile()) {
                continue;
            }
            final String fileName = file.getName();
            final String newFileName = fileName.replaceFirst(
                    Pattern.quote(dictName), Matcher.quoteReplacement(newDictName));
            if (!file.renameTo(new File(dictFile, newFileName))) {
                return false;
            }
        }
        return dictFile.renameTo(newDictFile);
    }
    return false;
}
 

List<String> quotedStringToList(String subjectString) {
	List<String> matchList = new ArrayList<String>();
	Pattern regex = Pattern.compile("[^\\s\"']+|\"([^\"]*)\"|'([^']*)'");
	Matcher regexMatcher = regex.matcher(subjectString);
	while (regexMatcher.find()) {
		if (regexMatcher.group(1) != null) {
			// Add double-quoted string without the quotes
			matchList.add(regexMatcher.group(1));
		} else if (regexMatcher.group(2) != null) {
			// Add single-quoted string without the quotes
			matchList.add(regexMatcher.group(2));
		} else {
			// Add unquoted word
			matchList.add(regexMatcher.group());
		}
	}
	return matchList;
}
 

@Override
protected void replaceText(CharSequence text){
    String beforeCursor = getText().toString().substring(0, getSelectionStart());
    String afterCursor = getText().toString().substring(getSelectionStart());

    Pattern pattern = Pattern.compile("#\\S*");
    Matcher matcher = pattern.matcher(beforeCursor);
    StringBuffer sb = new StringBuffer();
    int matcherStart = 0;
    while (matcher.find()) {
        int curPos = getSelectionStart();
        if(curPos > matcher.start() &&
                curPos <= matcher.end()){
            matcherStart = matcher.start();
            matcher.appendReplacement(sb, text.toString()+" ");
        }
    }
    matcher.appendTail(sb);
    setText(sb.toString()+afterCursor);
    setSelection(matcherStart + text.length()+1);
}
 

public static Matcher<String> matchingPattern(String patternStr) {
    return new TypeSafeDiagnosingMatcher<String>() {
        @Override
        protected boolean matchesSafely(String text, Description mismatchDescription) {
            Pattern pattern = Pattern.compile(patternStr, Pattern.DOTALL);
            boolean matches = pattern.matcher(text).matches();
            if (!matches) {
                mismatchDescription.appendText(text);
            }
            return matches;
        }

        @Override
        public void describeTo(Description description) {
            description.appendText("matching '" + patternStr + "'");
        }
    };
}
 

/**
 * Returns a list with all links contained in the input
 */
public static List<String> extractUrls(String text)
{
    List<String> containedUrls = new ArrayList<String>();
    String urlRegex = "((https?|ftp|gopher|telnet|file):((//)|(\\\\))+[\\w\\d:#@%/;$()~_?\\+-=\\\\\\.&]*)";
    Pattern pattern = Pattern.compile(urlRegex, Pattern.CASE_INSENSITIVE);
    Matcher urlMatcher = pattern.matcher(text);

    while (urlMatcher.find())
    {
        containedUrls.add(text.substring(urlMatcher.start(0),
                urlMatcher.end(0)));
    }

    return containedUrls;
}
 

private String convertType(String type) {

		Matcher matcher;
		for (CoTTypeDef cd : this.coTTypeMap) {
			if (!cd.isPredicate()) {
				Pattern pattern = Pattern.compile(cd.getKey());
				matcher = pattern.matcher(type);
				if (matcher.find()) {

					return this.filterOutDots(appendToType(type)
							+ cd.getValue());

				}

			}

		}
		// no match was found
		return "";

	}
 

public Movie parse(String path) {
    Movie movie;
    String fileName = File.baseName(path);
    for(Pattern p : patternList) {
        Matcher m = p.matcher(fileName);
        if (m.find()) {
            movie = new Movie();
            movie.setMovieName(StringUtil.formatMatch(m.group(1)));
            if(m.groupCount() == 4) {
                movie.setYear(Integer.valueOf(m.group(2)));
                movie.setQuality(m.group(3));
                movie.setSource(VideoSources.getFormattedSource(m.group(4)));
            } else if(m.groupCount() == 3) {
                movie.setQuality(m.group(2));
                movie.setSource(VideoSources.getFormattedSource(m.group(3)));
            } else {
                movie.setQuality(m.group(2));
            }
            return movie;
        }
    }
    return null;
}
 

/**
 * Tests that searching currencies by regex is supported.
 */
@Test
public void testSeachByRegex() {
    String dollarRegex = "\\p{Upper}{2}D";
    Pattern dollarPattern = Pattern.compile(dollarRegex);
    Collection<CurrencyUnit> allCurrencies = Monetary.getCurrencies(CurrencyQueryBuilder.of().build());
    Set<String> availableDollarCodes = allCurrencies.stream()
                                                    .map(CurrencyUnit::getCurrencyCode)
                                                    .filter(currencyCode -> dollarPattern.matcher(currencyCode).matches())
                                                    .collect(toSet());

    assertFalse(availableDollarCodes.isEmpty());

    CurrencyQuery dollarQuery = CurrencyQueryBuilder.of().setCurrencyCodes(dollarRegex).build();
    Collection<CurrencyUnit> dollarCurrencies = Monetary.getCurrencies(dollarQuery);
    for (CurrencyUnit dollarCurrency : dollarCurrencies) {
        availableDollarCodes.remove(dollarCurrency.getCurrencyCode());
    }

    assertTrue(availableDollarCodes.isEmpty());
}
 

private void processMatches(Pattern pattern, byte[] content, boolean isRequest){
    final Matcher respMatcher = pattern.matcher(new String(content));
    while(respMatcher.find() && !Thread.currentThread().isInterrupted()){
        String[] groups = new String[respMatcher.groupCount()+1];
        for (int i = 0; i < groups.length; i++) {
            groups[i] = respMatcher.group(i);
        }

        if(isRequest) {
            requestMatches++;
        }else {
            responseMatches++;
        }
        results.add(new Match(groups, isRequest));
    }
}
 

private Query createRegexQuery ( QueryDef qd ) {
    BooleanQuery query = new BooleanQuery();
    List<SpanQuery> spanClausesList = new ArrayList<SpanQuery>();
    String[] queryStrings;
    SpanQuery[] spanClausesArray;
    RegexQuery regexQuery;
    for ( String fld : qd.fields ) {
        spanClausesList.clear();
        queryStrings = qd.query.split(" ");
        spanClausesArray = new SpanQuery[queryStrings.length];
        for ( String subquery : queryStrings ) {
            regexQuery = new RegexQuery( new Term( fld, subquery ) );
            regexQuery.setRegexImplementation( new JavaUtilRegexCapabilities() );
            //if emptyable, like a query '(optional)?' or 'bla|a*', make span optional by wrapping it SpanOrQuery
            if(Pattern.matches(subquery, "")){
                spanClausesList.add( new SpanOrQuery( new SpanMultiTermQueryWrapper<RegexQuery>( regexQuery ) ) );
            } else {
                spanClausesList.add( new SpanMultiTermQueryWrapper<RegexQuery>( regexQuery ) );
            }
        }

        spanClausesList.toArray( spanClausesArray );
        query.add( new SpanNearQuery( spanClausesArray, 0, true), Occur.SHOULD );
    }
    return query;
}
 

/**
 * 
 * @param message
 */
public static AsrResult parseAsrResult(String id,String message , int speakms) {
	AsrResult asrResult = null ;
	Pattern pattern = Pattern.compile("([\\d]{1,})[\\.]{1}([\\s\\S]*);");
	Matcher matcher = pattern.matcher(message);    	
	if(matcher.find() && matcher.groupCount() == 2) {
		asrResult = new AsrResult(id , matcher.group(2) , matcher.group(1));
		if(asrResult.getMessage().endsWith("。")) {
			asrResult.setMessage(asrResult.getMessage().substring(0 , asrResult.getMessage().length() - 1));	
		}
	}
	if(speakms > 0 && asrResult!=null) {
		asrResult.setSpeakms(speakms);
	}
	return asrResult;
}
 

public MatchesEvaluator(final Evaluator<String> subject, final Evaluator<String> search) {
    this.subject = subject;
    this.search = search;

    // if the search string is a literal, we don't need to evaluate it each time; we can just
    // pre-compile it. Otherwise, it must be compiled every time.
    if (search instanceof StringLiteralEvaluator) {
        this.compiledPattern = Pattern.compile(search.evaluate(null).getValue());
    } else {
        this.compiledPattern = null;
    }
}
 

private String getJson(String html){
    final String regex = "var ?config ?=(.*);";
    final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE);
    final Matcher matcher = pattern.matcher(html);
    if (matcher.find()) {
        return matcher.group(1);
    }
    return null;
}
 

/**
 * 验证输入的邮箱格式是否符合
 * 
 * @param email
 * @return 是否合法
 */
public static boolean emailFormat(String email) {
	boolean tag = true;
	final String pattern1 = "^([a-z0-9A-Z]+[-|\\.]?)+[a-z0-9A-Z]@([a-z0-9A-Z]+(-[a-z0-9A-Z]+)?\\.)+[a-zA-Z]{2,}$";
	final Pattern pattern = Pattern.compile(pattern1);
	final Matcher mat = pattern.matcher(email);
	if (!mat.find()) {
		tag = false;
	}
	return tag;
}
 

/**
 * Transforms an attribute name given of the KEEL file to a valid xml tag. 
 * @param nameLabelUser attribute name with KEEL format.
 * @return valid xml tag of the attribute name given.
 * @throws Exception
 */
public String NameLabelValid(String nameLabelUser) throws Exception {
    String nameLabel = new String();

    nameLabel = nameLabelUser;

    Pattern p = Pattern.compile("\\s+");
    Matcher m = p.matcher(nameLabel);
    nameLabel = m.replaceAll("");

    nameLabel = nameLabel.replace("'", "");
    nameLabel = nameLabel.replace("\"", "");
    nameLabel = nameLabel.replace(" ", "_");
    nameLabel = nameLabel.replace(":", "_");
    nameLabel = nameLabel.replace(".", "_");
    nameLabel = nameLabel.replace("-", "_");

    String nameAux = nameLabel.toLowerCase();
    if (nameAux.startsWith("xml")) {
        nameLabel = nameLabel.substring(3);
    }
    p = Pattern.compile("[^A-ZÑa-zñ0-9_]+");
    m = p.matcher(nameLabel);
    nameLabel = m.replaceAll("");

    p = Pattern.compile("^[0-9]+");
    m = p.matcher(nameLabel);
    nameLabel = m.replaceAll("");


    return nameLabel;

}
 

@Override
public OutputStream getOutputStream() throws IOException {
  if (contentType != null && rewriteMap != null) {
    for (Map.Entry<Pattern, List<Pair<String, String>>> rewriteMapEntry : rewriteMap.entrySet()) {
      Matcher matcher = rewriteMapEntry.getKey().matcher(contentType);
      if (matcher.matches()) {
        return new RewriteOutputStream(httpServletResponse, rewriteMapEntry.getValue());
      }
    }
  }
  return httpServletResponse.getOutputStream();
}
 

/**
 * Get the captured group of the first string matching the pattern.
 * stderr is searched before stdout.
 *
 * @param pattern The multi-line pattern to match
 * @param group The group to capture
 * @return The matched string or null if no match was found
 */
public String firstMatch(String pattern, int group) {
  Matcher stderrMatcher = Pattern.compile(pattern, Pattern.MULTILINE).matcher(stderr);
  Matcher stdoutMatcher = Pattern.compile(pattern, Pattern.MULTILINE).matcher(stdout);
  if (stderrMatcher.find()) {
    return stderrMatcher.group(group);
  }
  if (stdoutMatcher.find()) {
    return stdoutMatcher.group(group);
  }
  return null;
}
 

static <T extends Named> Predicate1<T> namedMatcher(final Pat pattern) {
  if (pattern.s == null || pattern.s.equals("%")) {
    return Functions.truePredicate1();
  }
  final Pattern regex = likeToRegex(pattern);
  return v1 -> regex.matcher(v1.getName()).matches();
}
 

@NoWarning("IIL_PATTERN_COMPILE_IN_LOOP")
public int countByPatternOk(List<String> list) {
    int count = 0;
    Pattern pattern = Pattern.compile("^test");
    for(String element : list) {
        if(pattern.matcher(element).matches()) count++;
    }
    return count;
}
 

@Override
public boolean shouldOverrideUrlLoading(WebView view, final String url) {

    if (url.contains("HTMLOUT.ru")) {
        Uri uri = Uri.parse(url);
        try {
            String function = uri.getPathSegments().get(0);
            String query = uri.getQuery();
            Class[] parameterTypes = null;
            String[] parameterValues = new String[0];
            if (!TextUtils.isEmpty(query)) {
                Matcher m = Pattern.compile("(.*?)=(.*?)(&|$)").matcher(query);
                ArrayList<String> objs = new ArrayList<>();

                while (m.find()) {
                    objs.add(m.group(2));
                }
                parameterValues = new String[objs.size()];
                parameterTypes = new Class[objs.size()];
                for (int i = 0; i < objs.size(); i++) {
                    parameterTypes[i] = String.class;
                    parameterValues[i] = objs.get(i);
                }
            }
            Method method = this.getClass().getMethod(function, parameterTypes);

            method.invoke(getMainActivity(), (Object[]) parameterValues);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return true;
    }

    IntentActivity.tryShowUrl((Activity) getContext(), mHandler, url, true, false);

    return true;
}
 

public static void waitForZkMntr(String clusterName, Pattern pattern, int... podIndexes) {
    long timeoutMs = 120_000L;
    long pollMs = 1_000L;

    for (int podIndex : podIndexes) {
        String zookeeperPod = KafkaResources.zookeeperPodName(clusterName, podIndex);
        String zookeeperPort = String.valueOf(12181);
        waitFor("mntr", pollMs, timeoutMs, () -> {
                try {
                    String output = cmdKubeClient().execInPod(zookeeperPod,
                        "/bin/bash", "-c", "echo mntr | nc localhost " + zookeeperPort).out();

                    if (pattern.matcher(output).find()) {
                        return true;
                    }
                } catch (KubeClusterException e) {
                    LOGGER.trace("Exception while waiting for ZK to become leader/follower, ignoring", e);
                }
                return false;
            },
            () -> LOGGER.info("zookeeper `mntr` output at the point of timeout does not match {}:{}{}",
                pattern.pattern(),
                System.lineSeparator(),
                indent(cmdKubeClient().execInPod(zookeeperPod, "/bin/bash", "-c", "echo mntr | nc localhost " + zookeeperPort).out()))
        );
    }
}
 

private static void deleteOldFiles(PackModel packModel) throws Exception {
    String filename = obtainFilename(packModel);

    TexturePacker.Settings settings = packModel.getSettings();
    String atlasExtension = settings.atlasExtension == null ? "" : settings.atlasExtension;
    atlasExtension = Pattern.quote(atlasExtension);

    for (int i = 0, n = settings.scale.length; i < n; i++) {
        FileProcessor deleteProcessor = new FileProcessor() {
            protected void processFile (Entry inputFile) throws Exception {
                Files.delete(inputFile.inputFile.toPath());
            }
        };
        deleteProcessor.setRecursive(false);

        String scaledPackFileName = settings.getScaledPackFileName(filename, i);
        File packFile = new File(scaledPackFileName);

        String prefix = filename;
        int dotIndex = prefix.lastIndexOf('.');
        if (dotIndex != -1) prefix = prefix.substring(0, dotIndex);
        deleteProcessor.addInputRegex("(?i)" + prefix + "\\d*\\.(png|jpg|jpeg|ktx|zktx)");
        deleteProcessor.addInputRegex("(?i)" + prefix + atlasExtension);

        File outputRoot = new File(packModel.getOutputDir());
        String dir = packFile.getParent();
        if (dir == null)
            deleteProcessor.process(outputRoot, null);
        else if (new File(outputRoot + "/" + dir).exists()) //
            deleteProcessor.process(outputRoot + "/" + dir, null);
    }
}