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* "License"); you may not use this file except in compliance *
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package org.apache.james.mime4j;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Random;
import org.apache.commons.io.output.NullOutputStream;
import org.apache.james.mime4j.codec.CodecUtil;
import org.apache.james.mime4j.codec.QuotedPrintableInputStream;
public class QuotedPrintableInputStreamBench {
public static void main(String[] args) throws Exception {
byte[] data = initData(2 * 1024 * 1024);
byte[] encoded = encode(data);
// decoder test to make sure everything is okay
testDecode(data, encoded);
// warmup
OutputStream nullOut = new NullOutputStream();
for (int i = 0; i < 5; i++) {
ByteArrayInputStream ed = new ByteArrayInputStream(encoded);
InputStream in = new QuotedPrintableInputStream(ed);
CodecUtil.copy(in, nullOut);
}
Thread.sleep(100);
// test
long t0 = System.currentTimeMillis();
final int repetitions = 50;
for (int i = 0; i < repetitions; i++) {
ByteArrayInputStream ed = new ByteArrayInputStream(encoded);
InputStream in = new QuotedPrintableInputStream(ed);
CodecUtil.copy(in, nullOut);
}
long dt = System.currentTimeMillis() - t0;
long totalBytes = data.length * (long) repetitions;
double mbPerSec = (totalBytes / 1024.0 / 1024) / (dt / 1000.0);
System.out.println(dt + " ms");
System.out.println(totalBytes + " bytes");
System.out.println(mbPerSec + " mb/sec");
}
private static byte[] initData(int size) {
Random random = new Random(size);
byte[] data = new byte[size];
random.nextBytes(data);
return data;
}
private static byte[] encode(byte[] data) throws IOException {
InputStream in = new ByteArrayInputStream(data);
ByteArrayOutputStream out = new ByteArrayOutputStream();
CodecUtil.encodeQuotedPrintableBinary(in, out);
return out.toByteArray();
}
private static void testDecode(byte[] data, final byte[] encoded)
throws IOException {
ByteArrayInputStream ed = new ByteArrayInputStream(encoded);
InputStream in = new QuotedPrintableInputStream(ed);
ByteArrayOutputStream out = new ByteArrayOutputStream();
CodecUtil.copy(in, out);
compare(data, out.toByteArray());
}
private static void compare(byte[] expected, byte[] actual) {
if (expected.length != actual.length)
throw new AssertionError("length: " + expected.length + ", "
+ actual.length);
for (int i = 0; i < expected.length; i++)
if (expected[i] != actual[i])
throw new AssertionError("value @ " + i);
}
}