[6785] | 1 | /**************************************************************** |
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| 2 | * Licensed to the Apache Software Foundation (ASF) under one * |
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| 3 | * or more contributor license agreements. See the NOTICE file * |
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| 4 | * distributed with this work for additional information * |
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| 5 | * regarding copyright ownership. The ASF licenses this file * |
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| 6 | * to you under the Apache License, Version 2.0 (the * |
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| 7 | * "License"); you may not use this file except in compliance * |
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| 8 | * with the License. You may obtain a copy of the License at * |
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| 9 | * * |
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| 10 | * http://www.apache.org/licenses/LICENSE-2.0 * |
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| 11 | * * |
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| 12 | * Unless required by applicable law or agreed to in writing, * |
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| 13 | * software distributed under the License is distributed on an * |
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| 14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * |
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| 15 | * KIND, either express or implied. See the License for the * |
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| 16 | * specific language governing permissions and limitations * |
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| 17 | * under the License. * |
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| 18 | ****************************************************************/ |
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| 19 | |
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| 20 | package org.apache.james.mime4j.io; |
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| 21 | |
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| 22 | import java.io.ByteArrayInputStream; |
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| 23 | import java.io.IOException; |
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| 24 | import java.io.UnsupportedEncodingException; |
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| 25 | |
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| 26 | import org.apache.james.mime4j.io.EOLConvertingInputStream; |
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| 27 | |
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| 28 | |
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| 29 | import junit.framework.TestCase; |
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| 30 | |
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| 31 | public class EOLConvertingInputStreamTest extends TestCase { |
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| 32 | |
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| 33 | public void testRead() throws IOException { |
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| 34 | testConvertBoth("Line 1\r\nLine 2\r\n", "Line 1\r\nLine 2\r\n"); |
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| 35 | testConvertCR("Line 1\r\nLine 2\r\n", "Line 1\r\nLine 2\r\n"); |
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| 36 | testConvertLF("Line 1\r\nLine 2\r\n", "Line 1\r\nLine 2\r\n"); |
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| 37 | |
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| 38 | testConvertBoth("Line 1\n\rLine 2\n\r", "Line 1\r\n\r\nLine 2\r\n\r\n"); |
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| 39 | testConvertCR("Line 1\n\rLine 2\n\r", "Line 1\n\r\nLine 2\n\r\n"); |
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| 40 | testConvertLF("Line 1\n\rLine 2\n\r", "Line 1\r\n\rLine 2\r\n\r"); |
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| 41 | |
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| 42 | testConvertBoth("Line 1\nLine 2\n", "Line 1\r\nLine 2\r\n"); |
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| 43 | testConvertCR("Line 1\nLine 2\n", "Line 1\nLine 2\n"); |
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| 44 | testConvertLF("Line 1\nLine 2\n", "Line 1\r\nLine 2\r\n"); |
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| 45 | |
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| 46 | testConvertBoth("Line 1\rLine 2\r", "Line 1\r\nLine 2\r\n"); |
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| 47 | testConvertCR("Line 1\rLine 2\r", "Line 1\r\nLine 2\r\n"); |
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| 48 | testConvertLF("Line 1\rLine 2\r", "Line 1\rLine 2\r"); |
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| 49 | |
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| 50 | testConvertBoth("\r\n", "\r\n"); |
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| 51 | testConvertCR("\r\n", "\r\n"); |
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| 52 | testConvertLF("\r\n", "\r\n"); |
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| 53 | |
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| 54 | testConvertBoth("\n", "\r\n"); |
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| 55 | testConvertCR("\n", "\n"); |
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| 56 | testConvertLF("\n", "\r\n"); |
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| 57 | |
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| 58 | testConvertBoth("\r", "\r\n"); |
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| 59 | testConvertCR("\r", "\r\n"); |
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| 60 | testConvertLF("\r", "\r"); |
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| 61 | |
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| 62 | testConvertBoth("", ""); |
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| 63 | testConvertCR("", ""); |
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| 64 | testConvertLF("", ""); |
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| 65 | } |
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| 66 | |
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| 67 | private void testConvertBoth(String s1, String s2) throws IOException { |
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| 68 | byte[] bytes = new byte[1024]; |
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| 69 | |
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| 70 | ByteArrayInputStream bais = new ByteArrayInputStream(fromString(s1)); |
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| 71 | EOLConvertingInputStream in = |
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| 72 | new EOLConvertingInputStream(bais, |
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| 73 | EOLConvertingInputStream.CONVERT_BOTH); |
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| 74 | int n = in.read(bytes); |
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| 75 | assertEquals(s2, toString(bytes, n)); |
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| 76 | } |
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| 77 | |
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| 78 | private void testConvertCR(String s1, String s2) throws IOException { |
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| 79 | byte[] bytes = new byte[1024]; |
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| 80 | |
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| 81 | ByteArrayInputStream bais = new ByteArrayInputStream(fromString(s1)); |
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| 82 | EOLConvertingInputStream in = |
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| 83 | new EOLConvertingInputStream(bais, |
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| 84 | EOLConvertingInputStream.CONVERT_CR); |
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| 85 | int n = in.read(bytes); |
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| 86 | assertEquals(s2, toString(bytes, n)); |
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| 87 | } |
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| 88 | |
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| 89 | private void testConvertLF(String s1, String s2) throws IOException { |
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| 90 | byte[] bytes = new byte[1024]; |
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| 91 | |
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| 92 | ByteArrayInputStream bais = new ByteArrayInputStream(fromString(s1)); |
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| 93 | EOLConvertingInputStream in = |
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| 94 | new EOLConvertingInputStream(bais, |
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| 95 | EOLConvertingInputStream.CONVERT_LF); |
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| 96 | int n = in.read(bytes); |
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| 97 | assertEquals(s2, toString(bytes, n)); |
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| 98 | } |
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| 99 | |
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| 100 | private String toString(byte[] b, int len) { |
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| 101 | try { |
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| 102 | if (len == -1) { |
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| 103 | return ""; |
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| 104 | } |
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| 105 | return new String(b, 0, len, "US-ASCII"); |
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| 106 | } catch (UnsupportedEncodingException e) { |
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| 107 | fail(e.getMessage()); |
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| 108 | return null; |
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| 109 | } |
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| 110 | } |
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| 111 | |
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| 112 | private byte[] fromString(String s) { |
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| 113 | try { |
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| 114 | return s.getBytes("US-ASCII"); |
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| 115 | } catch (UnsupportedEncodingException e) { |
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| 116 | fail(e.getMessage()); |
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| 117 | return null; |
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| 118 | } |
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| 119 | } |
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| 120 | } |
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