Package org.codehaus.plexus.util

Class SelectorUtils

java.lang.Object

org.codehaus.plexus.util.SelectorUtils

public final class SelectorUtils
extends java.lang.Object

This is a utility class used by selectors and DirectoryScanner. The functionality more properly belongs just to selectors, but unfortunately DirectoryScanner exposed these as protected methods. Thus we have to support any subclasses of DirectoryScanner that may access these methods.

This is a Singleton.

Since:

1.5

Version:

$Id$

Field Summary

Fields

Modifier and Type	Field	Description
static java.lang.String	ANT_HANDLER_PREFIX
private static SelectorUtils	instance
static java.lang.String	PATTERN_HANDLER_PREFIX
static java.lang.String	PATTERN_HANDLER_SUFFIX
static java.lang.String	REGEX_HANDLER_PREFIX

Constructor Summary

Constructors

Modifier	Constructor	Description
private	SelectorUtils()	Private Constructor

Method Summary

Modifier and Type	Method	Description
private static boolean	equals(char c1, char c2, boolean isCaseSensitive)	Tests whether two characters are equal.
static SelectorUtils	getInstance()	Retrieves the manager of the Singleton.
(package private) static boolean	isAntPrefixedPattern(java.lang.String pattern)
private static boolean	isDoubleStar(char[] patDir)
static boolean	isOutOfDate(java.io.File src, java.io.File target, int granularity)	Returns dependency information on these two files.
(package private) static boolean	isRegexPrefixedPattern(java.lang.String pattern)
static boolean	match(char[] patArr, char[] strArr, boolean isCaseSensitive)
static boolean	match(java.lang.String pattern, java.lang.String str)	Tests whether or not a string matches against a pattern.
static boolean	match(java.lang.String pattern, java.lang.String str, boolean isCaseSensitive)	Tests whether or not a string matches against a pattern.
(package private) static boolean	matchAntPathPattern(char[][] patDirs, char[][] strDirs, boolean isCaseSensitive)
(package private) static boolean	matchAntPathPattern(java.lang.String[] patDirs, java.lang.String[] strDirs, boolean isCaseSensitive)
(package private) static boolean	matchAntPathPattern(java.lang.String pattern, java.lang.String str, java.lang.String separator, boolean isCaseSensitive)
(package private) static boolean	matchAntPathPattern(MatchPattern matchPattern, java.lang.String str, java.lang.String separator, boolean isCaseSensitive)
(package private) static boolean	matchAntPathPatternStart(java.lang.String[] patDirs, java.lang.String str, java.lang.String separator, boolean isCaseSensitive)
(package private) static boolean	matchAntPathPatternStart(java.lang.String pattern, java.lang.String str, java.lang.String separator, boolean isCaseSensitive)
(package private) static boolean	matchAntPathPatternStart(MatchPattern pattern, java.lang.String str, java.lang.String separator, boolean isCaseSensitive)
static boolean	matchPath(java.lang.String pattern, java.lang.String str)	Tests whether or not a given path matches a given pattern.
static boolean	matchPath(java.lang.String pattern, java.lang.String str, boolean isCaseSensitive)	Tests whether or not a given path matches a given pattern.
static boolean	matchPath(java.lang.String pattern, java.lang.String str, java.lang.String separator, boolean isCaseSensitive)
static boolean	matchPatternStart(java.lang.String pattern, java.lang.String str)	Tests whether or not a given path matches the start of a given pattern up to the first "**".
static boolean	matchPatternStart(java.lang.String pattern, java.lang.String str, boolean isCaseSensitive)	Tests whether or not a given path matches the start of a given pattern up to the first "**".
static java.lang.String	removeWhitespace(java.lang.String input)	"Flattens" a string by removing all whitespace (space, tab, linefeed, carriage return, and formfeed).
private static boolean	separatorPatternStartSlashMismatch(java.lang.String pattern, java.lang.String str, java.lang.String separator)
private static boolean	separatorPatternStartSlashMismatch(MatchPattern matchPattern, java.lang.String str, java.lang.String separator)
private static java.lang.String[]	tokenizePathToString(java.lang.String path, java.lang.String separator)

Methods inherited from class java.lang.Object

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

Field Detail

PATTERN_HANDLER_PREFIX

public static final java.lang.String PATTERN_HANDLER_PREFIX

See Also:

Constant Field Values

PATTERN_HANDLER_SUFFIX

public static final java.lang.String PATTERN_HANDLER_SUFFIX

See Also:

Constant Field Values

REGEX_HANDLER_PREFIX

public static final java.lang.String REGEX_HANDLER_PREFIX

See Also:

Constant Field Values

ANT_HANDLER_PREFIX

public static final java.lang.String ANT_HANDLER_PREFIX

See Also:

Constant Field Values

instance

private static SelectorUtils instance

Constructor Detail

SelectorUtils

private SelectorUtils()

Private Constructor

Method Detail

getInstance

public static SelectorUtils getInstance()

Retrieves the manager of the Singleton.

matchPatternStart

public static boolean matchPatternStart(java.lang.String pattern,
                                        java.lang.String str)

Tests whether or not a given path matches the start of a given pattern up to the first "**".

This is not a general purpose test and should only be used if you can live with false positives. For example, pattern=**\a and str=b will yield true.

Parameters:

pattern - The pattern to match against. Must not be null.

str - The path to match, as a String. Must not be null.

Returns:

whether or not a given path matches the start of a given pattern up to the first "**".

matchPatternStart

public static boolean matchPatternStart(java.lang.String pattern,
                                        java.lang.String str,
                                        boolean isCaseSensitive)

Tests whether or not a given path matches the start of a given pattern up to the first "**".

This is not a general purpose test and should only be used if you can live with false positives. For example, pattern=**\a and str=b will yield true.

Parameters:

pattern - The pattern to match against. Must not be null.

str - The path to match, as a String. Must not be null.

isCaseSensitive - Whether or not matching should be performed case sensitively.

Returns:

whether or not a given path matches the start of a given pattern up to the first "**".

isAntPrefixedPattern

static boolean isAntPrefixedPattern(java.lang.String pattern)

matchAntPathPatternStart

static boolean matchAntPathPatternStart(MatchPattern pattern,
                                        java.lang.String str,
                                        java.lang.String separator,
                                        boolean isCaseSensitive)

matchAntPathPatternStart

static boolean matchAntPathPatternStart(java.lang.String pattern,
                                        java.lang.String str,
                                        java.lang.String separator,
                                        boolean isCaseSensitive)

separatorPatternStartSlashMismatch

private static boolean separatorPatternStartSlashMismatch(java.lang.String pattern,
                                                          java.lang.String str,
                                                          java.lang.String separator)

separatorPatternStartSlashMismatch

private static boolean separatorPatternStartSlashMismatch(MatchPattern matchPattern,
                                                          java.lang.String str,
                                                          java.lang.String separator)

matchAntPathPatternStart

static boolean matchAntPathPatternStart(java.lang.String[] patDirs,
                                        java.lang.String str,
                                        java.lang.String separator,
                                        boolean isCaseSensitive)

matchPath

public static boolean matchPath(java.lang.String pattern,
                                java.lang.String str)

Tests whether or not a given path matches a given pattern.

Parameters:

pattern - The pattern to match against. Must not be null.

str - The path to match, as a String. Must not be null.

Returns:

true if the pattern matches against the string, or false otherwise.

matchPath

public static boolean matchPath(java.lang.String pattern,
                                java.lang.String str,
                                boolean isCaseSensitive)

Tests whether or not a given path matches a given pattern.

Parameters:

pattern - The pattern to match against. Must not be null.

str - The path to match, as a String. Must not be null.

isCaseSensitive - Whether or not matching should be performed case sensitively.

Returns:

true if the pattern matches against the string, or false otherwise.

matchPath

public static boolean matchPath(java.lang.String pattern,
                                java.lang.String str,
                                java.lang.String separator,
                                boolean isCaseSensitive)

isRegexPrefixedPattern

static boolean isRegexPrefixedPattern(java.lang.String pattern)

matchAntPathPattern

static boolean matchAntPathPattern(MatchPattern matchPattern,
                                   java.lang.String str,
                                   java.lang.String separator,
                                   boolean isCaseSensitive)

matchAntPathPattern

static boolean matchAntPathPattern(java.lang.String pattern,
                                   java.lang.String str,
                                   java.lang.String separator,
                                   boolean isCaseSensitive)

matchAntPathPattern

static boolean matchAntPathPattern(java.lang.String[] patDirs,
                                   java.lang.String[] strDirs,
                                   boolean isCaseSensitive)

matchAntPathPattern

static boolean matchAntPathPattern(char[][] patDirs,
                                   char[][] strDirs,
                                   boolean isCaseSensitive)

isDoubleStar

private static boolean isDoubleStar(char[] patDir)

match

public static boolean match(java.lang.String pattern,
                            java.lang.String str)

Tests whether or not a string matches against a pattern. The pattern may contain two special characters:
'*' means zero or more characters
'?' means one and only one character

Parameters:

pattern - The pattern to match against. Must not be null.

str - The string which must be matched against the pattern. Must not be null.

Returns:

true if the string matches against the pattern, or false otherwise.

match

public static boolean match(java.lang.String pattern,
                            java.lang.String str,
                            boolean isCaseSensitive)

Tests whether or not a string matches against a pattern. The pattern may contain two special characters:
'*' means zero or more characters
'?' means one and only one character

Parameters:

pattern - The pattern to match against. Must not be null.

str - The string which must be matched against the pattern. Must not be null.

isCaseSensitive - Whether or not matching should be performed case sensitively.

Returns:

true if the string matches against the pattern, or false otherwise.

match

public static boolean match(char[] patArr,
                            char[] strArr,
                            boolean isCaseSensitive)

equals

private static boolean equals(char c1,
                              char c2,
                              boolean isCaseSensitive)

Tests whether two characters are equal.

tokenizePathToString

private static java.lang.String[] tokenizePathToString(java.lang.String path,
                                                       java.lang.String separator)

isOutOfDate

public static boolean isOutOfDate(java.io.File src,
                                  java.io.File target,
                                  int granularity)

Returns dependency information on these two files. If src has been modified later than target, it returns true. If target doesn't exist, it likewise returns true. Otherwise, target is newer than src and is not out of date, thus the method returns false. It also returns false if the src file doesn't even exist, since how could the target then be out of date.

Parameters:

src - the original file

target - the file being compared against

granularity - the amount in seconds of slack we will give in determining out of dateness

Returns:

whether the target is out of date

removeWhitespace

public static java.lang.String removeWhitespace(java.lang.String input)

"Flattens" a string by removing all whitespace (space, tab, linefeed, carriage return, and formfeed). This uses StringTokenizer and the default set of tokens as documented in the single argument constructor.

Parameters:

input - a String to remove all whitespace.

Returns:

a String that has had all whitespace removed.