Regex to split a string based on \r characters not a carriage return or a new line

Question

i want a Regex expression to split a string based on \r characters not a carriage return or a new line.

Below is the sample string i have.

MSH|^~\&|1100|CB|CERASP|TESTSB8F|202008041554||ORU|1361|P|2.2\rPID|1|833944|21796920320|8276975

i want this to be split into

MSH|^~\&|1100|CB|CERASP|TESTSB8F|202008041554||ORU|1361|P|2.2
PID|1|833944|21796920320|8276975

currently i have something like this

StringUtils.split(testStr, "\\r");

but it is splitting into

MSH|^~
&|1100|CB|CERASP|TESTSB8F|202008041554||ORU|1361|P|2.2
PID|1|833944|21796920320|8276975

If my answer did not solve your problem please consider updating the question. — Wiktor Stribiżew, Nov 28 '21 at 19:15

enzo · Answer 1 · 2021-06-24T17:40:13.497

1

You can just use String#split:

final String str = "MSH|^~\\&|1100|CB|CERASP|TESTSB8F|202008041554||ORU|1361|P|2.2\\rPID|1|833944|21796920320|8276975";
        
final String[] substrs = str.split("\\\\r");
System.out.println(Arrays.toString(substrs));
// Outputs [MSH|^~\&|1100|CB|CERASP|TESTSB8F|202008041554||ORU|1361|P|2.2, PID|1|833944|21796920320|8276975]

edited Jun 24 '21 at 17:40

answered Jun 24 '21 at 17:29

enzo

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no it doesnt work it thinks \r is a carriage return but not string "\r" – suri Jun 24 '21 at 17:39

score 1 · Answer 2 · answered Jun 24 '21 at 18:29

You can use

import java.utl.regex.*;
//...
String[] results = text.split(Pattern.quote("\\r"));

The Pattern.quote allows using any plain text inside String.split that accepts a valid regular expression. Here, \ is a special char, and needs to be escaped for both Java string interpretation engine and the regex engine.

score 0 · Answer 3 · answered Jun 24 '21 at 17:45

The method being called matches any one of the contents in the delimiter string as a delimiter, not the entire sequence. Here is the code from SeparatorUtils that executes the delimiter (str is the input string being split) check:

if (separatorChars.indexOf(str.charAt(i)) >= 0) {

As @enzo mentioned, java.lang.String.split() will do the job - just make sure to quote the separator. Pattern.quote() can help.

Regex to split a string based on \r characters not a carriage return or a new line

3 Answers3