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annotate Chronosv2/source/Extensions/DirectoryInfoExtensions.cs @ 12:6a0449185449

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SCC changed from TFS to HG
author stevenh7776 stevenhollidge@hotmail.com
date Tue, 21 Feb 2012 17:47:35 +0700
parents 443821e55f06
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rev   line source
10
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1 using System;
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2 using System.Collections.Generic;
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3 using System.IO;
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4 using System.Linq;
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5
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6 namespace Chronos.Extensions
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7 {
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8 /// <summary>
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9 /// Extension methods for the DirectoryInfo class
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10 /// </summary>
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11 public static class DirectoryInfoExtensions
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12 {
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13 #region · Extensions ·
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14
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15 /// <summary>
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16 /// Gets all files in the directory matching one of the several (!) supplied patterns (instead of just one in the regular implementation).
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17 /// </summary>
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18 /// <param name="directory">The directory.</param>
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19 /// <param name="patterns">The patterns.</param>
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20 /// <returns>The matching files</returns>
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21 /// <remarks>This methods is quite perfect to be used in conjunction with the newly created FileInfo-Array extension methods.</remarks>
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22 /// <example>
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23 /// <code>
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24 /// var files = directory.GetFiles("*.txt", "*.xml");
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25 /// </code></example>
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26 public static FileInfo[] GetFiles(this DirectoryInfo directory, params string[] patterns)
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27 {
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28 var files = new List<FileInfo>();
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29
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30 foreach (var pattern in patterns)
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31 {
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32 files.AddRange(directory.GetFiles(pattern));
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33 }
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34
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35 return files.ToArray();
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36 }
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37
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38 /// <summary>
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39 /// Searches the provided directory recursively and returns the first file matching the provided pattern.
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40 /// </summary>
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41 /// <param name="directory">The directory.</param>
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42 /// <param name="pattern">The pattern.</param>
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43 /// <returns>The found file</returns>
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44 /// <example>
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45 /// <code>
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46 /// var directory = new DirectoryInfo(@"c:\");
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47 /// var file = directory.FindFileRecursive("win.ini");
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48 /// </code></example>
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49 public static FileInfo FindFileRecursive(this DirectoryInfo directory, string pattern)
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50 {
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51 var files = directory.GetFiles(pattern);
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52
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53 if (files.Length > 0)
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54 {
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55 return files[0];
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56 }
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57
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58 foreach (var subDirectory in directory.GetDirectories())
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59 {
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60 var foundFile = subDirectory.FindFileRecursive(pattern);
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61
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62 if (foundFile != null)
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63 {
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64 return foundFile;
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65 }
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66 }
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67
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68 return null;
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69 }
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70
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71 /// <summary>
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72 /// Searches the provided directory recursively and returns the first file matching to the provided predicate.
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73 /// </summary>
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74 /// <param name="directory">The directory.</param>
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75 /// <param name="predicate">The predicate.</param>
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76 /// <returns>The found file</returns>
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77 /// <example>
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78 /// <code>
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79 /// var directory = new DirectoryInfo(@"c:\");
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80 /// var file = directory.FindFileRecursive(f => f.Extension == ".ini");
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81 /// </code></example>
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82 public static FileInfo FindFileRecursive(this DirectoryInfo directory, Func<FileInfo, bool> predicate)
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83 {
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84 foreach (var file in directory.GetFiles())
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85 {
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86 if (predicate(file))
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87 {
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88 return file;
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89 }
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90 }
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91
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92 foreach (var subDirectory in directory.GetDirectories())
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93 {
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94 var foundFile = subDirectory.FindFileRecursive(predicate);
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95
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96 if (foundFile != null)
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97 {
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98 return foundFile;
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99 }
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100 }
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101
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102 return null;
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103 }
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104
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105 /// <summary>
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106 /// Searches the provided directory recursively and returns the all files matching the provided pattern.
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107 /// </summary>
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108 /// <param name="directory">The directory.</param>
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109 /// <param name="pattern">The pattern.</param>
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110 /// <remarks>This methods is quite perfect to be used in conjunction with the newly created FileInfo-Array extension methods.</remarks>
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111 /// <returns>The found files</returns>
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112 /// <example>
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113 /// <code>
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114 /// var directory = new DirectoryInfo(@"c:\");
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115 /// var files = directory.FindFilesRecursive("*.ini");
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116 /// </code></example>
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117 public static FileInfo[] FindFilesRecursive(this DirectoryInfo directory, string pattern)
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118 {
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119 var foundFiles = new List<FileInfo>();
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120
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121 FindFilesRecursive(directory, pattern, foundFiles);
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122
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123 return foundFiles.ToArray();
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124 }
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125
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126 private static void FindFilesRecursive(DirectoryInfo directory, string pattern, List<FileInfo> foundFiles)
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127 {
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128 foundFiles.AddRange(directory.GetFiles(pattern));
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129
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130 directory.GetDirectories().ForEach(d => FindFilesRecursive(d, pattern, foundFiles));
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131 }
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132
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133 /// <summary>
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134 /// Searches the provided directory recursively and returns the all files matching to the provided predicate.
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135 /// </summary>
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136 /// <param name="directory">The directory.</param>
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137 /// <param name="predicate">The predicate.</param>
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138 /// <returns>The found files</returns>
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139 /// <remarks>This methods is quite perfect to be used in conjunction with the newly created FileInfo-Array extension methods.</remarks>
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140 /// <example>
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141 /// <code>
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142 /// var directory = new DirectoryInfo(@"c:\");
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143 /// var files = directory.FindFilesRecursive(f => f.Extension == ".ini");
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144 /// </code></example>
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145 public static FileInfo[] FindFilesRecursive(this DirectoryInfo directory, Func<FileInfo, bool> predicate)
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146 {
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147 var foundFiles = new List<FileInfo>();
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148
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149 FindFilesRecursive(directory, predicate, foundFiles);
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150
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151 return foundFiles.ToArray();
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152 }
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153
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154 private static void FindFilesRecursive(DirectoryInfo directory, Func<FileInfo, bool> predicate, List<FileInfo> foundFiles)
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155 {
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156 foundFiles.AddRange(directory.GetFiles().Where(predicate));
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157
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158 directory.GetDirectories().ForEach(d => FindFilesRecursive(d, predicate, foundFiles));
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159 }
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160
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161 #endregion
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162 }
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163 }