com.sun.mail.mbox.LineCounter Maven / Gradle / Ivy
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/*
* %W% %E%
*/
package com.sun.mail.mbox;
import java.io.*;
/**
* Count number of lines output.
*/
class LineCounter extends FilterOutputStream {
private int lastb = -1;
protected int lineCount;
public LineCounter(OutputStream os) {
super(os);
}
public void write(int b) throws IOException {
// If we have a full line, count it.
if (b == '\r' || (b == '\n' && lastb != '\r'))
lineCount++;
out.write(b);
lastb = b;
}
public void write(byte[] b) throws IOException {
write(b, 0, b.length);
}
public void write(byte[] b, int off, int len) throws IOException {
for (int i = 0 ; i < len ; i++) {
write(b[off + i]);
}
}
public int getLineCount() {
return lineCount;
}
// for testing
public static void main(String argv[]) throws Exception {
int b;
LineCounter os =
new LineCounter(System.out);
while ((b = System.in.read()) >= 0)
os.write(b);
os.flush();
System.out.println(os.getLineCount());
}
}