Package net.sf.okapi.common

Class RegexUtil

java.lang.Object

net.sf.okapi.common.RegexUtil

public class RegexUtil
extends Object

Collection of helper function for working with regular expressions.

Constructor Summary

Constructors

Constructor	Description
RegexUtil()

Method Summary

Modifier and Type	Method	Description
static boolean	contains(String st, Pattern pattern)
static int	countLeadingQualifiers(String string, String qualifier)
static int	countMatches(String string, String regex)
static int	countMatches(String string, String regex, int matchLen)
static int	countTrailingQualifiers(String string, String qualifier)
static String	escape(String str)	Escapes a given string for regex.
static String	find(String searchIn, String findWhatRegex, int group)
static String	find(String searchIn, Pattern findWhatPattern, int group)
static List<String>	findAll(String searchIn, String findWhatRegex, int group)
static List<String>	findAll(String searchIn, Pattern findWhatPattern, int group)
static int	getGroupAtPos(String regex, int position)
static Pattern	getPattern(String regex)
static List<Range>	getQuotedAreas(String regex)
static boolean	matches(String st, Pattern pattern)
static String	replaceAll(String string, String regex, int group, String replacement)
static String	replaceAll(String string, Pattern pattern, int group, String replacement)
static String	updateGroupReferences(String regex, int groupNum)	Adjust values in back references to capturing groups (like \1) of a given regex.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RegexUtil

public RegexUtil()

Method Detail

getPattern

public static Pattern getPattern(String regex)

find

public static String find(String searchIn,
                          String findWhatRegex,
                          int group)

find

public static String find(String searchIn,
                          Pattern findWhatPattern,
                          int group)

findAll

public static List<String> findAll(String searchIn,
                                   String findWhatRegex,
                                   int group)

findAll

public static List<String> findAll(String searchIn,
                                   Pattern findWhatPattern,
                                   int group)

replaceAll

public static String replaceAll(String string,
                                Pattern pattern,
                                int group,
                                String replacement)

replaceAll

public static String replaceAll(String string,
                                String regex,
                                int group,
                                String replacement)

countMatches

public static int countMatches(String string,
                               String regex)

countMatches

public static int countMatches(String string,
                               String regex,
                               int matchLen)

countLeadingQualifiers

public static int countLeadingQualifiers(String string,
                                         String qualifier)

countTrailingQualifiers

public static int countTrailingQualifiers(String string,
                                          String qualifier)

escape

public static String escape(String str)

Escapes a given string for regex.

Parameters:

str - the given string

Returns:

escaped string

matches

public static boolean matches(String st,
                              Pattern pattern)

contains

public static boolean contains(String st,
                               Pattern pattern)

getQuotedAreas

public static List<Range> getQuotedAreas(String regex)

getGroupAtPos

public static int getGroupAtPos(String regex,
                                int position)

updateGroupReferences

public static String updateGroupReferences(String regex,
                                           int groupNum)

Adjust values in back references to capturing groups (like \1) of a given regex. This method needs to be called when a new group is added to a regex, and the regex contains back references to existing groups. Values in the references having number equal or greater than groupNum, should be increased by 1.

Parameters:

regex - the given regex containing back references to capturing groups.

groupNum - the number of the new group.

Returns:

the given regex with updated references.