Java Code Examples for java.util.regex.Pattern

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;
}
 

@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);
}
 

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;
}
 

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");
}
 

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());
}
 

/**
 * 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\\.-][email protected]([\\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;

}
 

/**
 * 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();
}
 

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;
}
 

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;
}
 

/**
 * 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;
}
 

@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));
}
 

/**
 * 
 * @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;
}
 

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;
}
 

/**
 * 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;
}
 

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;
}
 

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 + "'");
        }
    };
}
 

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 "";

	}
 

/**
 * 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 Func1<String, Boolean> tagNameFilter(String regexp) {
    if(regexp != null) {
        boolean positive = (!regexp.startsWith("!"));
        Pattern p = PatternUtil.filterPattern(regexp);
        return s -> positive == p.matcher(s).matches(); // XNOR
    }
    return s -> true;
}
 

public static String RegexFind(String regex,String string,int start,int end){
    Pattern pattern = Pattern.compile(regex);
    Matcher matcher = pattern.matcher(string);
    String res = string;
    while (matcher.find()){
        res = matcher.group();
    }
    return res.substring(start, res.length() - end);
}
 

private String findXmlElementText(String xmlMsg, String elementName)
{
    Pattern pattern = Pattern.compile(".*<" + elementName + ">(.*)</" + elementName + ">.*");
    Matcher matcher = pattern.matcher(xmlMsg);
    if (matcher.matches() && matcher.groupCount() == 1)
    {
        return matcher.group(1);
    }
    else
    {
        return null;
    }
}
 

/**
 * A topic survives if (1) it doesn't match the blacklist, and
 * (2) either whitelist is empty, or it matches the whitelist.
 * Whitelist and blacklist use regex patterns (NOT glob patterns).
 */
public static boolean survived(String topic, List<Pattern> blacklist, List<Pattern> whitelist) {
  if (stringInPatterns(topic, blacklist)) {
    return false;
  }
  return (whitelist.isEmpty() || stringInPatterns(topic, whitelist));
}
 

@Override
@Deprecated
public <T extends TCSObject<T>> Set<T> getTCSObjects(Class<T> clazz,
                                                     Pattern regexp)
    throws CredentialsException {
  LOG.debug("method entry");
  return kernelState.getTCSObjects(clazz, regexp);
}
 

public static int countOccurences(String dotText, String label) {
    final Pattern pattern = Pattern.compile(label, Pattern.MULTILINE);
    Matcher matcher = pattern.matcher(dotText);
    int count = 0;
    while (matcher.find()) {
        count++;
    }
    return count;
}
 

public KibanaUtils(final PluginSettings settings, final PluginClient pluginClient) {
    this.pluginClient = pluginClient;
    this.projectPrefix = StringUtils.isNotBlank(settings.getCdmProjectPrefix()) ? settings.getCdmProjectPrefix() : "";
    this.reIndexPattern = Pattern.compile("^" + projectPrefix + "\\.(?<name>[a-zA-Z0-9-]*)\\.(?<uid>.*)\\.\\*$");
    this.reProjectFromIndex = Pattern.compile("^(" + projectPrefix + ")?\\.(?<name>[a-zA-Z0-9-]*)(\\.(?<uid>.*))?\\.\\d{4}\\.\\d{2}\\.\\d{2}$");
    this.defaultVersion = Version.valueOf(ConfigurationSettings.DEFAULT_KIBANA_VERSION);
}
 

private Pattern wildcardToRegex(String filter) {
	String trimmed = filter.trim();
	if (trimmed.isEmpty()) {
		return null;
	}
	String regex = (trimmed.contains("*") ? "^" : "") + "\\Q"//$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
			+ trimmed.replaceAll("\\*", //$NON-NLS-1$
					Matcher.quoteReplacement("\\E.*?\\Q")) //$NON-NLS-1$
			+ "\\E";//$NON-NLS-1$
	// remove potentially empty quotes at begin or end
	regex = regex.replaceAll(Pattern.quote("\\Q\\E"), ""); //$NON-NLS-1$ //$NON-NLS-2$
	return Pattern.compile(regex);
}
 

private void hitEndTest(boolean callFind, String testNo, String regex,
        String input, boolean hit) {
    Pattern pattern = Pattern.compile(regex);
    Matcher matcher = pattern.matcher(input);
    if (callFind) {
        matcher.find();
    } else {
        matcher.matches();
    }
    boolean h = matcher.hitEnd();

    assertTrue(testNo, h == hit);
}
 

/**
 * Parses group header data.
 *
 * @param group EdmEntity representing group.
 * @param groupData Group data to parse.
 * @param endGroupPosition Position where "endGroup" statement is. Used for parsing data between "endGroup" and "endObjectProperties"
 * @return Data without parsed section.
 * @throws EdmException if an error occurs.
 */
private StringBuilder parseGroupHeader(EdmEntity group, StringBuilder groupData, int endGroupPosition) throws EdmException {

    // group data between "endGroup" and "endObjectProperties" declaration
    int afterDataStart = endGroupPosition + 8; // 8 = "endGroup".length
    int afterDataEnd = groupData.length() - 19; // 19 = "endObjectProperties".length
    String afterData = groupData.substring(afterDataStart, afterDataEnd);
    // removes afterData from groupData
    groupData.delete(endGroupPosition, groupData.length());


    // group data between "beginObjectProperties" and "beginGroup" declaration
    Pattern p = Pattern.compile(
            "(object\\s+activeGroupClass.*?beginObjectProperties(.*?)beginGroup)",
            Pattern.DOTALL);
    Matcher m = p.matcher(groupData);
    m.find();
    int start = m.start();
    int end = m.end();
    String matchData = m.group(2);

    // append afterData
    matchData = matchData + afterData;

    Pattern p1 = Pattern.compile(".*");
    Matcher m1 = p1.matcher(matchData);

    while (m1.find())
        parseProperty(m1, group);

    groupData.delete(start, end);
    return groupData;
}
 

/**
 * Creates a test channel including all the modular packages served by this mock class.
 *
 * In addition, the channel includes also the 'perl-5.26.3' package, which is part of 'perl:5.26' module definition,
 * but served as a regular package.
 *
 * @param user the user to create the channel with
 * @return a populated test channel
 */
public static Channel createModularTestChannel(User user) throws Exception {
    Channel channel = TestUtils.reload(ChannelFactoryTest.createTestChannel(user, "channel-x86_64"));
    channel.setChecksumType(ChannelFactory.findChecksumTypeByLabel("sha1"));
    Modules modulemd = new Modules();
    modulemd.setChannel(channel);
    modulemd.setRelativeFilename("/path/to/modulemd.yaml");
    channel.setModules(modulemd);

    List<String> nevras = doGetAllPackages();
    // perl 5.26 is a special package which is included in the module definition even though it's not served as a
    // modular package. We need it in the channel to be able to test this case.
    String perlNevra = "perl-5.26.3-416.el8:4.x86_64";
    nevras.add(perlNevra);

    // 'modularitylabel' rpm tag determines that a package belongs to a module
    PackageExtraTagsKeys modularityHeader = PackageManagerTest.createExtraTagKey("modularitylabel");

    Pattern nevraPattern = Pattern.compile("^(.*)-(\\d+):(.*)-(.*)\\.(.*)$");
    for (String nevra : nevras) {
        Matcher m = nevraPattern.matcher(nevra);
        if (m.matches()) {
            Package pkg = PackageTest.createTestPackage(user.getOrg());
            PackageTest.populateTestPackage(pkg, user.getOrg(), PackageNameTest.createTestPackageName(m.group(1)),
                    PackageEvrFactoryTest.createTestPackageEvr(m.group(2), m.group(3), m.group(4)),
                    PackageFactory.lookupPackageArchByLabel(m.group(5)));

            if (!perlNevra.equals(nevra)) {
                // Exclude non-modular Perl package mentioned above
                pkg.setExtraTags(Collections.singletonMap(modularityHeader, "my:nsvc"));
            }

            channel.addPackage(pkg);
        }
    }

    ChannelFactory.save(channel);
    return channel;
}