CODEWITHSUNDEEP
javastringgroovy
lonelymo
lonelymo

Reputation: 4202

How do I replace "\n" with "\r\n" in groovy?

My groovy program creates a csv that is has \n for new line. But the customer wants \r\n as they run windows.

I understand that this question is answered a tonne of time on SO including here How to remove line breaks from a file in Java?

This script here does not replace \n with \r\n. The \n just stays on

    newline = System.getProperty("line.separator");
    for (int i = 0; i < dataContext.getDataCount(); i++) {
        InputStream is = dataContext.getStream(i);
        Properties props = dataContext.getProperties(i);

        reader = new BufferedReader(new InputStreamReader(is));
        outData = new StringBuffer();
        lineNum = 0;

        while ((line = reader.readLine()) != null) {
            line.replace(newline, "\r\n")
            outData.append(line);


        }
        is = new ByteArrayInputStream(outData.toString().getBytes("UTF-8"));

        dataContext.storeStream(is, props);
    }

Upvotes: 0

Views: 6270

Answers (1)

Tim B
Tim B

Reputation: 41210

You are reading the file a line at the time by using readLine - this already removes the line ending for you.

What you need to do is read the lines one at a time as you do now - then append \r\n in between each line, not replace.

   while ((line = reader.readLine()) != null) {
        outData.append(line);
        outData.append("\r\n");
    }

Upvotes: 3

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