Regex Pattern for exclude control characters and include all language charactes tab and new line must include

Question

We have set of inputs like 'java-> Way-> Project test'. ex:

We need to eliminate control characters only. we used [\p{C}] for matching those characters unfortunately it matches the the tab space and new line characters. Kindly give(Valid regex pattern) solutions to solve this issue.

we used [\p{C}|\t|\r\n]* not working – Maheshkumar Uthamaraj Nov 21 '16 at 16:13 — Maheshkumar Uthamaraj, Nov 21 '16 at 16:13
we also tried [^P\{Cc}\t\r\n] also but not working – Maheshkumar Uthamaraj Nov 21 '16 at 16:40 — Maheshkumar Uthamaraj, Nov 21 '16 at 16:40

anubhava · Answer 1 · 2016-11-21T16:45:54.057

2

In Java you can use this regex:

[\p{Cntrl}&&[^\p{Space}]]

This will match a control character i.e. [\x00-\x1F\x7F] except a whitespace character i.e. [ \t\n\x0B\f\r]

Java RegEx Reference

In Java use:

String re = "[\\p{Cntrl}&&[^\\p{Space}]]";

Example:

String title = "xyz a\u0000b\u0007c\u008fd\u0009 - foo \u0009 bar";
title = title.replaceAll("[\\p{Cntrl}&&[^\\p{Space}]]", "");
System.out.printf("[%s]%n", title);
//=> [xyz abcd   - foo   bar]

edited Nov 21 '16 at 16:45

answered Nov 21 '16 at 16:16

anubhava

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Hi we tried but removes tab space and new line characters too. any suggestions – Maheshkumar Uthamaraj Nov 21 '16 at 16:26
What is your sample input string? – anubhava Nov 21 '16 at 16:30
java to Way to Project test , contains control character , tab space and new line ; ex take it in question image – Maheshkumar Uthamaraj Nov 21 '16 at 16:33
I posted a sample code and it is NOT removing tab or any space. – anubhava Nov 21 '16 at 16:46
we have some different scenarios so code not to be alter only regex pattern need' finding valid (utf-8)code points , the Matcher.match should return true if(no control characters) false if(control characters only) – Maheshkumar Uthamaraj Nov 22 '16 at 05:26
When you use `.matches` it must match complete string. For ex: `"\u0007\u0008".matches("[\\p{Cntrl}&&[^\\p{Space}]]+")` will return `true` – anubhava Nov 22 '16 at 05:38

Regex Pattern for exclude control characters and include all language charactes tab and new line must include

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