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/*
* Copyright (C) 2011, 2013 Robin Rosenberg
* Copyright (C) 2013 Robin Stocker
* and other copyright owners as documented in the project's IP log.
*
* This program and the accompanying materials are made available
* under the terms of the Eclipse Distribution License v1.0 which
* accompanies this distribution, is reproduced below, and is
* available at http://www.eclipse.org/org/documents/edl-v10.php
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* - Neither the name of the Eclipse Foundation, Inc. nor the
* names of its contributors may be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.eclipse.jgit.util.io;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.junit.Assert;
import org.junit.Test;
public class AutoCRLFOutputStreamTest {
@Test
public void test() throws IOException {
assertNoCrLf("", "");
assertNoCrLf("\r", "\r");
assertNoCrLf("\r\n", "\n");
assertNoCrLf("\r\n", "\r\n");
assertNoCrLf("\r\r", "\r\r");
assertNoCrLf("\r\n\r", "\n\r");
assertNoCrLf("\r\n\r\r", "\r\n\r\r");
assertNoCrLf("\r\n\r\n", "\r\n\r\n");
assertNoCrLf("\r\n\r\n\r", "\n\r\n\r");
assertNoCrLf("\0\n", "\0\n");
}
@Test
public void testBoundary() throws IOException {
for (int i = AutoCRLFOutputStream.BUFFER_SIZE - 10; i < AutoCRLFOutputStream.BUFFER_SIZE + 10; i++) {
String s1 = Strings.repeat("a", i);
assertNoCrLf(s1, s1);
String s2 = Strings.repeat("\0", i);
assertNoCrLf(s2, s2);
}
}
private void assertNoCrLf(String string, String string2) throws IOException {
assertNoCrLfHelper(string, string2);
// \u00e5 = LATIN SMALL LETTER A WITH RING ABOVE
// the byte value is negative
assertNoCrLfHelper("\u00e5" + string, "\u00e5" + string2);
assertNoCrLfHelper("\u00e5" + string + "\u00e5", "\u00e5" + string2
+ "\u00e5");
assertNoCrLfHelper(string + "\u00e5", string2 + "\u00e5");
}
private void assertNoCrLfHelper(String expect, String input)
throws IOException {
byte[] inbytes = input.getBytes();
byte[] expectBytes = expect.getBytes();
for (int i = -4; i < 5; ++i) {
int size = Math.abs(i);
byte[] buf = new byte[size];
InputStream in = new ByteArrayInputStream(inbytes);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
OutputStream out = new AutoCRLFOutputStream(bos);
if (i > 0) {
int n;
while ((n = in.read(buf)) >= 0) {
out.write(buf, 0, n);
}
} else if (i < 0) {
int n;
while ((n = in.read(buf)) >= 0) {
byte[] b = new byte[n];
System.arraycopy(buf, 0, b, 0, n);
out.write(b);
}
} else {
int c;
while ((c = in.read()) != -1)
out.write(c);
}
out.flush();
in.close();
out.close();
byte[] actualBytes = bos.toByteArray();
Assert.assertEquals("bufsize=" + size, encode(expectBytes),
encode(actualBytes));
}
}
String encode(byte[] in) {
StringBuilder str = new StringBuilder();
for (byte b : in) {
if (b < 32)
str.append(0xFF & b);
else {
str.append("'");
str.append((char) b);
str.append("'");
}
str.append(' ');
}
return str.toString();
}
}
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