| /**************************************************************** |
| * Licensed to the Apache Software Foundation (ASF) under one * |
| * or more contributor license agreements. See the NOTICE file * |
| * distributed with this work for additional information * |
| * regarding copyright ownership. The ASF licenses this file * |
| * to you under the Apache License, Version 2.0 (the * |
| * "License"); you may not use this file except in compliance * |
| * with the License. You may obtain a copy of the License at * |
| * * |
| * http://www.apache.org/licenses/LICENSE-2.0 * |
| * * |
| * Unless required by applicable law or agreed to in writing, * |
| * software distributed under the License is distributed on an * |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * |
| * KIND, either express or implied. See the License for the * |
| * specific language governing permissions and limitations * |
| * under the License. * |
| ****************************************************************/ |
| |
| package org.apache.james.mime4j.codec; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.InputStream; |
| import java.nio.charset.Charset; |
| import java.util.Arrays; |
| |
| import org.apache.james.mime4j.Charsets; |
| import org.apache.james.mime4j.io.InputStreams; |
| import org.apache.james.mime4j.util.ContentUtil; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| public class QuotedPrintableTextEncodeTest { |
| |
| @Test |
| public void testEscapedSoftBreak() throws Exception { |
| byte[] content = new byte[500]; |
| Arrays.fill(content, (byte) 0x18); |
| byte[] expected = new byte[1557]; |
| int index = 0; |
| for (int l = 0; l < 20; l++) { |
| for (int i = 0; i < 25; i++) { |
| expected[index++] = '='; |
| expected[index++] = '1'; |
| expected[index++] = '8'; |
| } |
| if (l < 19) { |
| expected[index++] = '='; |
| expected[index++] = '\r'; |
| expected[index++] = '\n'; |
| } |
| } |
| check(content, expected); |
| } |
| |
| @Test |
| public void testPlainAsciiSoftBreak() throws Exception { |
| byte[] content = new byte[500]; |
| Arrays.fill(content, (byte) 0x29); |
| byte[] expected = new byte[518]; |
| Arrays.fill(expected, (byte) 0x29); |
| expected[75] = '='; |
| expected[76] = '\r'; |
| expected[77] = '\n'; |
| expected[153] = '='; |
| expected[154] = '\r'; |
| expected[155] = '\n'; |
| expected[231] = '='; |
| expected[232] = '\r'; |
| expected[233] = '\n'; |
| expected[309] = '='; |
| expected[310] = '\r'; |
| expected[311] = '\n'; |
| expected[387] = '='; |
| expected[388] = '\r'; |
| expected[389] = '\n'; |
| expected[465] = '='; |
| expected[466] = '\r'; |
| expected[467] = '\n'; |
| check(content, expected); |
| } |
| |
| @Test |
| public void testPlainASCII() throws Exception { |
| checkRoundtrip("Thisisaverysimplemessage.Thisisaverysimplemessage.Thisisaverysimplemessage." + |
| "Thisisaverysimplemessage.Thisisaverysimplemessage.Thisisaverysimplemessage." + |
| "Thisisaverysimplemessage.Thisisaverysimplemessage.Thisisaverysimplemessage." + |
| "Thisisaverysimplemessage.Thisisaverysimplemessage.Thisisaverysimplemessage."); |
| } |
| |
| @Test |
| public void testEncodeSpace() throws Exception { |
| checkRoundtrip(" A"); |
| } |
| |
| @Test |
| public void testLetterEncoding() throws Exception { |
| for (byte b = 0; b < Byte.MAX_VALUE; b++) { |
| byte[] content = {b}; |
| // White space is only escaped when followed by CRLF |
| if (b != 10 && b != 13 && b != 32 && b != 9) { |
| checkRoundtrip(content); |
| } |
| } |
| } |
| |
| @Test |
| public void testCRLFShouldResetLineCount() throws Exception { |
| StringBuilder buffer = new StringBuilder(4096); |
| for (int i = 0; i < 1000; i++) { |
| buffer.append("Hugo\r\n"); |
| } |
| String longLine = buffer.toString(); |
| check(longLine, longLine); |
| } |
| |
| @Test |
| public void testDontEscapeLF() throws Exception { |
| check("Ready\nFor\n", "Ready\nFor\n"); |
| } |
| |
| @Test |
| public void testDontEscapeCR() throws Exception { |
| check("Ready\rFor\r", "Ready\rFor\r"); |
| } |
| |
| @Test |
| public void testEscapeSpaceAtLineEnd() throws Exception { |
| check(" \r\n", " =20\r\n"); |
| } |
| |
| @Test |
| public void testDontEscapeSpaceBeforeLineEnd() throws Exception { |
| check(" ", " "); |
| } |
| |
| @Test |
| public void testDontEscapeTabsBeforeLineEnd() throws Exception { |
| check("\t\t\t\t", "\t\t\t\t"); |
| } |
| |
| @Test |
| public void testDontWhiteSpaceBeforeLineEnd() throws Exception { |
| check(" \t\t \t", " \t\t \t"); |
| } |
| |
| private void checkRoundtrip(String content) throws Exception { |
| checkRoundtrip(content, Charsets.US_ASCII); |
| } |
| |
| private void checkRoundtrip(String content, Charset charset) throws Exception { |
| checkRoundtrip(charset.encode(content).array()); |
| } |
| |
| private void checkRoundtrip(byte[] content) throws Exception { |
| InputStream in = InputStreams.create(content); |
| ByteArrayOutputStream out = new ByteArrayOutputStream(); |
| EncoderUtil.encodeQ(in, out); |
| // read back through decoder |
| in = new QuotedPrintableInputStream(InputStreams.create(out.toByteArray())); |
| byte[] buf = ContentUtil.buffer(in); |
| assertEquals(content, buf); |
| } |
| |
| private void check(String content, String expected) throws Exception { |
| check(ContentUtil.toAsciiByteArray(content), ContentUtil.toAsciiByteArray(expected)); |
| } |
| |
| private void check(byte[] content, byte[] expected) throws Exception { |
| InputStream in = InputStreams.create(content); |
| ByteArrayOutputStream out = new ByteArrayOutputStream(); |
| EncoderUtil.encodeQ(in, out); |
| assertEquals(expected, out.toByteArray()); |
| } |
| |
| private void assertEquals(byte[] expected, byte[] actual) { |
| Assert.assertEquals(expected.length, actual.length); |
| for (int i = 0; i < actual.length; i++) { |
| Assert.assertEquals("Mismatch@" + i, expected[i], actual[i]); |
| } |
| } |
| } |