| /* |
| * Copyright (C) 2012, Robin Rosenberg |
| * 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 static java.nio.charset.StandardCharsets.UTF_8; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| public class AutoCRLFInputStreamTest { |
| |
| @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 = AutoCRLFInputStream.BUFFER_SIZE - 10; i < AutoCRLFInputStream.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(UTF_8); |
| byte[] expectBytes = expect.getBytes(UTF_8); |
| for (int i = 0; i < 5; ++i) { |
| byte[] buf = new byte[i]; |
| try (ByteArrayInputStream bis = new ByteArrayInputStream(inbytes); |
| InputStream in = new AutoCRLFInputStream(bis, true); |
| ByteArrayOutputStream out = new ByteArrayOutputStream()) { |
| if (i > 0) { |
| int n; |
| while ((n = in.read(buf)) >= 0) { |
| out.write(buf, 0, n); |
| } |
| } else { |
| int c; |
| while ((c = in.read()) != -1) |
| out.write(c); |
| } |
| out.flush(); |
| byte[] actualBytes = out.toByteArray(); |
| Assert.assertEquals("bufsize=" + i, 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(); |
| } |
| |
| } |