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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