org.glassfish.admin.rest.logviewer.LineEndNormalizingWriter Maven / Gradle / Ivy
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// Portions Copyright [2019] [Payara Foundation and/or affiliates]
package org.glassfish.admin.rest.logviewer;
import java.io.FilterWriter;
import java.io.Writer;
import java.io.IOException;
/**
* Finds the lone LF and converts that to CR+LF.
*
*
* Internet Explorer's XmlHttpRequest.responseText seems to
* normalize the line end, and if we only send LF without CR, it will
* not recognize that as a new line. To work around this problem,
* we use this filter to always convert LF to CR+LF.
*
* @author Kohsuke Kawaguchi
*/
public /*for now, until Hudson migration completes*/ class LineEndNormalizingWriter extends FilterWriter {
private boolean seenCR;
public LineEndNormalizingWriter(Writer out) {
super(out);
}
@Override
public void write(char[] cbuf) throws IOException {
write(cbuf, 0, cbuf.length);
}
@Override
public void write(String str) throws IOException {
write(str,0,str.length());
}
@Override
public void write(int c) throws IOException {
if(!seenCR && c==LF)
super.write("\r\n");
else
super.write(c);
seenCR = (c==CR);
}
@Override
public void write(char[] cbuf, int off, int len) throws IOException {
int end = off+len;
int writeBegin = off;
for( int i=off; i