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annotate MetroWpf/MetroWpf.Framework/Extensions/StreamExtensions.cs @ 57:558c09d76726

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author Steven Hollidge <stevenhollidge@hotmail.com>
date Thu, 19 Apr 2012 14:39:59 +0100
parents 060f02cd4591
children
rev   line source
15
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1 using System;
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2 using System.IO;
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3 using System.Text;
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4
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5 namespace MetroWpf
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6 {
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7 /// <summary>
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8 /// Extension methods any kind of streams
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9 /// </summary>
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10 public static class StreamExtensions
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11 {
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12 #region · Extensions ·
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13
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14 /// <summary>
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15 /// Opens a StreamReader using the default encoding.
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16 /// </summary>
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17 /// <param name="stream">The stream.</param>
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18 /// <returns>The stream reader</returns>
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19 public static StreamReader GetReader(this Stream stream)
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20 {
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21 return stream.GetReader(null);
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22 }
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23
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24 /// <summary>
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25 /// Opens a StreamReader using the specified encoding.
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26 /// </summary>
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27 /// <param name="stream">The stream.</param>
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28 /// <param name="encoding">The encoding.</param>
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29 /// <returns>The stream reader</returns>
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30 public static StreamReader GetReader(this Stream stream, Encoding encoding)
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31 {
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32 if (stream.CanRead == false)
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33 {
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34 throw new InvalidOperationException("Stream does not support reading.");
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35 }
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36
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37 encoding = (encoding ?? Encoding.Default);
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38
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39 return new StreamReader(stream, encoding);
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40 }
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41
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42 /// <summary>
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43 /// Opens a StreamWriter using the default encoding.
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44 /// </summary>
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45 /// <param name="stream">The stream.</param>
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46 /// <returns>The stream writer</returns>
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47 public static StreamWriter GetWriter(this Stream stream)
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48 {
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49 return stream.GetWriter(null);
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50 }
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51
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52 /// <summary>
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53 /// Opens a StreamWriter using the specified encoding.
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54 /// </summary>
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55 /// <param name="stream">The stream.</param>
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56 /// <param name="encoding">The encoding.</param>
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57 /// <returns>The stream writer</returns>
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58 public static StreamWriter GetWriter(this Stream stream, Encoding encoding)
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59 {
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60 if (stream.CanWrite == false)
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61 {
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62 throw new InvalidOperationException("Stream does not support writing.");
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63 }
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64
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65 encoding = (encoding ?? Encoding.Default);
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66
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67 return new StreamWriter(stream, encoding);
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68 }
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69
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70 /// <summary>
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71 /// Reads all text from the stream using the default encoding.
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72 /// </summary>
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73 /// <param name="stream">The stream.</param>
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74 /// <returns>The result string.</returns>
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75 public static string ReadToEnd(this Stream stream)
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76 {
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77 return stream.ReadToEnd(null);
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78 }
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79
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80 /// <summary>
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81 /// Reads all text from the stream using a specified encoding.
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82 /// </summary>
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83 /// <param name="stream">The stream.</param>
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84 /// <param name="encoding">The encoding.</param>
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85 /// <returns>The result string.</returns>
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86 public static string ReadToEnd(this Stream stream, Encoding encoding)
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87 {
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88 using (var reader = stream.GetReader(encoding))
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89 {
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90 return reader.ReadToEnd();
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91 }
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92 }
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93
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94 /// <summary>
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95 /// Sets the stream cursor to the beginning of the stream.
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96 /// </summary>
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97 /// <param name="stream">The stream.</param>
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98 /// <returns>The stream</returns>
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99 public static Stream SeekToBegin(this Stream stream)
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100 {
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101 if (stream.CanSeek == false)
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102 {
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103 throw new InvalidOperationException("Stream does not support seeking.");
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104 }
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105
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106 stream.Seek(0, SeekOrigin.Begin);
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107
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108 return stream;
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109 }
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110
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111 /// <summary>
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112 /// Sets the stream cursor to the end of the stream.
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113 /// </summary>
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114 /// <param name="stream">The stream.</param>
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115 /// <returns>The stream</returns>
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116 public static Stream SeekToEnd(this Stream stream)
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117 {
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118 if (stream.CanSeek == false)
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119 {
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120 throw new InvalidOperationException("Stream does not support seeking.");
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121 }
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122
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123 stream.Seek(0, SeekOrigin.End);
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124
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125 return stream;
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126 }
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127
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128 /// <summary>
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129 /// Copies any stream into a local MemoryStream
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130 /// </summary>
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131 /// <param name="stream">The source stream.</param>
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132 /// <returns>The copied memory stream.</returns>
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133 public static MemoryStream CopyToMemory(this Stream stream)
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134 {
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135 var memoryStream = new MemoryStream((int)stream.Length);
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136
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137 stream.CopyTo(memoryStream);
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138
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139 return memoryStream;
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140 }
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141
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142 /// <summary>
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143 /// Reads the entire stream and returns a byte array.
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144 /// </summary>
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145 /// <param name="stream">The stream.</param>
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146 /// <returns>The byte array</returns>
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147 /// <remarks>Thanks to EsbenCarlsen for providing an update to this method.</remarks>
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148 public static byte[] ReadAllBytes(this Stream stream)
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149 {
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150 using (var memoryStream = stream.CopyToMemory())
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151 {
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152 return memoryStream.ToArray();
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153 }
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154 }
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155
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156 #endregion
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157 }
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158 }