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annotate Core/StreamUtils.cs @ 1:94e25b786321

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Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller Initial commit of clean SharpZipLib 0860 source. Only change is build paths.
author IBBoard <dev@ibboard.co.uk>
date Sat, 30 Oct 2010 14:03:17 +0000
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children
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1 // StreamUtils.cs
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2 //
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3 // Copyright 2005 John Reilly
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4 //
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5 // This program is free software; you can redistribute it and/or
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6 // modify it under the terms of the GNU General Public License
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7 // as published by the Free Software Foundation; either version 2
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8 // of the License, or (at your option) any later version.
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9 //
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10 // This program is distributed in the hope that it will be useful,
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11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 // GNU General Public License for more details.
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14 //
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15 // You should have received a copy of the GNU General Public License
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16 // along with this program; if not, write to the Free Software
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17 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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18 //
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19 // Linking this library statically or dynamically with other modules is
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20 // making a combined work based on this library. Thus, the terms and
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21 // conditions of the GNU General Public License cover the whole
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22 // combination.
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23 //
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24 // As a special exception, the copyright holders of this library give you
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25 // permission to link this library with independent modules to produce an
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26 // executable, regardless of the license terms of these independent
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27 // modules, and to copy and distribute the resulting executable under
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28 // terms of your choice, provided that you also meet, for each linked
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29 // independent module, the terms and conditions of the license of that
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30 // module. An independent module is a module which is not derived from
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31 // or based on this library. If you modify this library, you may extend
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32 // this exception to your version of the library, but you are not
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33 // obligated to do so. If you do not wish to do so, delete this
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34 // exception statement from your version.
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35
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36 using System;
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37 using System.IO;
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38
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39 namespace ICSharpCode.SharpZipLib.Core
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40 {
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41 /// <summary>
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42 /// Provides simple <see cref="Stream"/>" utilities.
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43 /// </summary>
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44 public sealed class StreamUtils
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45 {
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46 /// <summary>
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47 /// Read from a <see cref="Stream"/> ensuring all the required data is read.
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48 /// </summary>
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49 /// <param name="stream">The stream to read.</param>
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50 /// <param name="buffer">The buffer to fill.</param>
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51 /// <seealso cref="ReadFully(Stream,byte[],int,int)"/>
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52 static public void ReadFully(Stream stream, byte[] buffer)
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53 {
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54 ReadFully(stream, buffer, 0, buffer.Length);
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55 }
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56
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57 /// <summary>
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58 /// Read from a <see cref="Stream"/>" ensuring all the required data is read.
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59 /// </summary>
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60 /// <param name="stream">The stream to read data from.</param>
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61 /// <param name="buffer">The buffer to store data in.</param>
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62 /// <param name="offset">The offset at which to begin storing data.</param>
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63 /// <param name="count">The number of bytes of data to store.</param>
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64 /// <exception cref="ArgumentNullException">Required parameter is null</exception>
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65 /// <exception cref="ArgumentOutOfRangeException"><paramref name="offset"/> and or <paramref name="count"/> are invalid.</exception>
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66 /// <exception cref="EndOfStreamException">End of stream is encountered before all the data has been read.</exception>
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67 static public void ReadFully(Stream stream, byte[] buffer, int offset, int count)
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68 {
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69 if ( stream == null ) {
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70 throw new ArgumentNullException("stream");
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71 }
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72
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73 if ( buffer == null ) {
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74 throw new ArgumentNullException("buffer");
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75 }
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76
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77 // Offset can equal length when buffer and count are 0.
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78 if ( (offset < 0) || (offset > buffer.Length) ) {
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79 throw new ArgumentOutOfRangeException("offset");
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80 }
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81
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82 if ( (count < 0) || (offset + count > buffer.Length) ) {
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83 throw new ArgumentOutOfRangeException("count");
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84 }
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85
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86 while ( count > 0 ) {
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87 int readCount = stream.Read(buffer, offset, count);
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88 if ( readCount <= 0 ) {
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89 throw new EndOfStreamException();
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90 }
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91 offset += readCount;
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92 count -= readCount;
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93 }
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94 }
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95
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96 /// <summary>
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97 /// Copy the contents of one <see cref="Stream"/> to another.
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98 /// </summary>
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99 /// <param name="source">The stream to source data from.</param>
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100 /// <param name="destination">The stream to write data to.</param>
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101 /// <param name="buffer">The buffer to use during copying.</param>
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102 static public void Copy(Stream source, Stream destination, byte[] buffer)
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103 {
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104 if (source == null) {
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105 throw new ArgumentNullException("source");
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106 }
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107
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108 if (destination == null) {
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109 throw new ArgumentNullException("destination");
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110 }
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111
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112 if (buffer == null) {
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113 throw new ArgumentNullException("buffer");
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114 }
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115
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116 // Ensure a reasonable size of buffer is used without being prohibitive.
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117 if (buffer.Length < 128) {
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118 throw new ArgumentException("Buffer is too small", "buffer");
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119 }
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120
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121 bool copying = true;
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122
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123 while (copying) {
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124 int bytesRead = source.Read(buffer, 0, buffer.Length);
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125 if (bytesRead > 0) {
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126 destination.Write(buffer, 0, bytesRead);
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127 }
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diff changeset
128 else {
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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diff changeset
129 destination.Flush();
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diff changeset
130 copying = false;
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diff changeset
131 }
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
IBBoard <dev@ibboard.co.uk>
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diff changeset
132 }
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diff changeset
133 }
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IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
134
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IBBoard <dev@ibboard.co.uk>
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135 /// <summary>
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diff changeset
136 /// Copy the contents of one <see cref="Stream"/> to another.
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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parents:
diff changeset
137 /// </summary>
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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138 /// <param name="source">The stream to source data from.</param>
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139 /// <param name="destination">The stream to write data to.</param>
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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140 /// <param name="buffer">The buffer to use during copying.</param>
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141 /// <param name="progressHandler">The <see cref="ProgressHandler">progress handler delegate</see> to use.</param>
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142 /// <param name="updateInterval">The minimum <see cref="TimeSpan"/> between progress updates.</param>
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143 /// <param name="sender">The source for this event.</param>
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144 /// <param name="name">The name to use with the event.</param>
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145 /// <remarks>This form is specialised for use within #Zip to support events during archive operations.</remarks>
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146 static public void Copy(Stream source, Stream destination,
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147 byte[] buffer, ProgressHandler progressHandler, TimeSpan updateInterval, object sender, string name)
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148 {
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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149 Copy(source, destination, buffer, progressHandler, updateInterval, sender, name, -1);
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150 }
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151
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152 /// <summary>
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153 /// Copy the contents of one <see cref="Stream"/> to another.
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154 /// </summary>
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155 /// <param name="source">The stream to source data from.</param>
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156 /// <param name="destination">The stream to write data to.</param>
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157 /// <param name="buffer">The buffer to use during copying.</param>
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158 /// <param name="progressHandler">The <see cref="ProgressHandler">progress handler delegate</see> to use.</param>
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159 /// <param name="updateInterval">The minimum <see cref="TimeSpan"/> between progress updates.</param>
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160 /// <param name="sender">The source for this event.</param>
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161 /// <param name="name">The name to use with the event.</param>
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162 /// <param name="fixedTarget">A predetermined fixed target value to use with progress updates.
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163 /// If the value is negative the target is calculated by looking at the stream.</param>
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parents:
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164 /// <remarks>This form is specialised for use within #Zip to support events during archive operations.</remarks>
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165 static public void Copy(Stream source, Stream destination,
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166 byte[] buffer,
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167 ProgressHandler progressHandler, TimeSpan updateInterval,
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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168 object sender, string name, long fixedTarget)
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169 {
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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170 if (source == null) {
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171 throw new ArgumentNullException("source");
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172 }
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diff changeset
173
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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174 if (destination == null) {
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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175 throw new ArgumentNullException("destination");
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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176 }
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177
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178 if (buffer == null) {
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179 throw new ArgumentNullException("buffer");
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180 }
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181
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182 // Ensure a reasonable size of buffer is used without being prohibitive.
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183 if (buffer.Length < 128) {
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parents:
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184 throw new ArgumentException("Buffer is too small", "buffer");
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185 }
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diff changeset
186
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187 if (progressHandler == null) {
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188 throw new ArgumentNullException("progressHandler");
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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189 }
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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diff changeset
190
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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191 bool copying = true;
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diff changeset
192
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193 DateTime marker = DateTime.Now;
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194 long processed = 0;
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195 long target = 0;
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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diff changeset
196
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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197 if (fixedTarget >= 0) {
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198 target = fixedTarget;
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diff changeset
199 }
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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200 else if (source.CanSeek) {
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201 target = source.Length - source.Position;
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diff changeset
202 }
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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parents:
diff changeset
203
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IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
204 // Always fire 0% progress..
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
205 ProgressEventArgs args = new ProgressEventArgs(name, processed, target);
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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diff changeset
206 progressHandler(sender, args);
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diff changeset
207
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diff changeset
208 bool progressFired = true;
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diff changeset
209
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diff changeset
210 while (copying) {
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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parents:
diff changeset
211 int bytesRead = source.Read(buffer, 0, buffer.Length);
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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parents:
diff changeset
212 if (bytesRead > 0) {
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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parents:
diff changeset
213 processed += bytesRead;
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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parents:
diff changeset
214 progressFired = false;
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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parents:
diff changeset
215 destination.Write(buffer, 0, bytesRead);
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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parents:
diff changeset
216 }
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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parents:
diff changeset
217 else {
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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parents:
diff changeset
218 destination.Flush();
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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parents:
diff changeset
219 copying = false;
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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parents:
diff changeset
220 }
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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parents:
diff changeset
221
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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parents:
diff changeset
222 if (DateTime.Now - marker > updateInterval) {
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
223 progressFired = true;
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
224 marker = DateTime.Now;
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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parents:
diff changeset
225 args = new ProgressEventArgs(name, processed, target);
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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parents:
diff changeset
226 progressHandler(sender, args);
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IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
227
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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parents:
diff changeset
228 copying = args.ContinueRunning;
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
229 }
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
230 }
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
231
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
232 if (!progressFired) {
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
233 args = new ProgressEventArgs(name, processed, target);
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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parents:
diff changeset
234 progressHandler(sender, args);
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
235 }
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
236 }
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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parents:
diff changeset
237
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
238 /// <summary>
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
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parents:
diff changeset
239 /// Initialise an instance of <see cref="StreamUtils"></see>
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IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
240 /// </summary>
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
241 private StreamUtils()
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
242 {
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
243 // Do nothing.
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
244 }
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
245 }
94e25b786321 Re #311: can't read ZIP file packed by Linux app Archive Manager/File Roller
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
246 }