com.jn.langx.util.regexp

接口 Regexp

所有已知实现类:

JdkRegexp, NamedRegexp

public interface Regexp

从以下版本开始:

4.5.0

方法概要

限定符和类型	方法和说明
List<String>	getNamedGroups()
Option	getOption()
String	getPattern() Returns the pattern that is interpreted by this matcher.
RegexpMatcher	matcher(CharSequence text) 对指定的文本进行匹配
String[]	split(CharSequence input) Splits the given input sequence around matches of this pattern.
String[]	split(CharSequence input, int limit) Splits the given input sequence around matches of this pattern.

方法详细资料

getPattern

String getPattern()

Returns the pattern that is interpreted by this matcher.

返回:

The pattern for which this matcher was created

matcher

RegexpMatcher matcher(CharSequence text)

对指定的文本进行匹配

参数:

text - 要进行匹配的文本

返回:

匹配器

split

String[] split(CharSequence input)

Splits the given input sequence around matches of this pattern.

This method works as if by invoking the two-argument split method with the given input sequence and a limit argument of zero. Trailing empty strings are therefore not included in the resulting array.

The input "boo:and:foo", for example, yields the following results with these expressions:

Regex	Result
:	{ "boo", "and", "foo" }
o	{ "b", "", ":and:f" }

参数:

input - The character sequence to be split

返回:

The array of strings computed by splitting the input around matches of this pattern

split

String[] split(CharSequence input,
               int limit)

Splits the given input sequence around matches of this pattern.

The array returned by this method contains each substring of the input sequence that is terminated by another subsequence that matches this pattern or is terminated by the end of the input sequence. The substrings in the array are in the order in which they occur in the input. If this pattern does not match any subsequence of the input then the resulting array has just one element, namely the input sequence in string form.

When there is a positive-width match at the beginning of the input sequence then an empty leading substring is included at the beginning of the resulting array. A zero-width match at the beginning however never produces such empty leading substring.

The limit parameter controls the number of times the pattern is applied and therefore affects the length of the resulting array. If the limit n is greater than zero then the pattern will be applied at most n - 1 times, the array's length will be no greater than n, and the array's last entry will contain all input beyond the last matched delimiter. If n is non-positive then the pattern will be applied as many times as possible and the array can have any length. If n is zero then the pattern will be applied as many times as possible, the array can have any length, and trailing empty strings will be discarded.

The input "boo:and:foo", for example, yields the following results with these parameters:

Regex	Limit	Result
:	2	{ "boo", "and:foo" }
:	5	{ "boo", "and", "foo" }
:	-2	{ "boo", "and", "foo" }
o	5	{ "b", "", ":and:f", "", "" }
o	-2	{ "b", "", ":and:f", "", "" }
o	0	{ "b", "", ":and:f" }

参数:

input - The character sequence to be split

limit - The result threshold, as described above

返回:

The array of strings computed by splitting the input around matches of this pattern

getOption

Option getOption()

返回:

正则表达式的option

getNamedGroups

List<String> getNamedGroups()

返回:

获取所有 named group's name