1 | 'use strict';
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2 |
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3 | var counter = 0;
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4 |
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5 |
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6 |
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7 |
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8 |
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9 |
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10 | var permissions = {
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11 | USER_READ: 256,
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12 | USER_WRITE: 128,
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13 | USER_EXEC: 64,
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14 | GROUP_READ: 32,
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15 | GROUP_WRITE: 16,
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16 | GROUP_EXEC: 8,
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17 | OTHER_READ: 4,
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18 | OTHER_WRITE: 2,
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19 | OTHER_EXEC: 1
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20 | };
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21 |
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22 | function getUid() {
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23 | return process.getuid && process.getuid();
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24 | }
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25 |
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26 | function getGid() {
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27 | return process.getgid && process.getgid();
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28 | }
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29 |
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30 |
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31 |
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32 |
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33 |
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34 |
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35 | function Item() {
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36 |
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37 | var now = Date.now();
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38 |
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39 | |
40 |
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41 |
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42 |
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43 | this._atime = new Date(now);
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44 |
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45 | |
46 |
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47 |
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48 |
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49 | this._ctime = new Date(now);
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50 |
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51 | |
52 |
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53 |
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54 |
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55 | this._birthtime = new Date(now);
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56 |
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57 | |
58 |
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59 |
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60 |
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61 | this._mtime = new Date(now);
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62 |
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63 | |
64 |
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65 |
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66 | this._mode = 438;
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67 |
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68 | |
69 |
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70 |
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71 |
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72 | this._uid = getUid();
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73 |
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74 | |
75 |
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76 |
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77 |
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78 | this._gid = getGid();
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79 |
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80 | |
81 |
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82 |
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83 |
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84 | this._id = ++counter;
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85 |
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86 | |
87 |
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88 |
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89 | this.links = 0;
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90 |
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91 | }
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92 |
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93 |
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94 |
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95 |
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96 |
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97 |
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98 | Item.prototype.canRead = function() {
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99 | var uid = getUid();
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100 | var gid = getGid();
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101 | var can = false;
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102 | if (uid === 0) {
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103 | can = true;
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104 | } else if (uid === this._uid) {
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105 | can = (permissions.USER_READ & this._mode) === permissions.USER_READ;
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106 | } else if (gid === this._gid) {
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107 | can = (permissions.GROUP_READ & this._mode) === permissions.GROUP_READ;
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108 | } else {
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109 | can = (permissions.OTHER_READ & this._mode) === permissions.OTHER_READ;
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110 | }
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111 | return can;
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112 | };
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113 |
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114 |
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115 |
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116 |
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117 |
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118 |
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119 | Item.prototype.canWrite = function() {
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120 | var uid = getUid();
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121 | var gid = getGid();
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122 | var can = false;
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123 | if (uid === 0) {
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124 | can = true;
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125 | } else if (uid === this._uid) {
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126 | can = (permissions.USER_WRITE & this._mode) === permissions.USER_WRITE;
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127 | } else if (gid === this._gid) {
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128 | can = (permissions.GROUP_WRITE & this._mode) === permissions.GROUP_WRITE;
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129 | } else {
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130 | can = (permissions.OTHER_WRITE & this._mode) === permissions.OTHER_WRITE;
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131 | }
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132 | return can;
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133 | };
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134 |
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135 |
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136 |
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137 |
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138 |
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139 |
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140 | Item.prototype.canExecute = function() {
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141 | var uid = getUid();
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142 | var gid = getGid();
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143 | var can = false;
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144 | if (uid === 0) {
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145 | can = true;
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146 | } else if (uid === this._uid) {
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147 | can = (permissions.USER_EXEC & this._mode) === permissions.USER_EXEC;
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148 | } else if (gid === this._gid) {
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149 | can = (permissions.GROUP_EXEC & this._mode) === permissions.GROUP_EXEC;
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150 | } else {
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151 | can = (permissions.OTHER_EXEC & this._mode) === permissions.OTHER_EXEC;
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152 | }
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153 | return can;
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154 | };
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155 |
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156 |
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157 |
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158 |
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159 |
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160 |
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161 | Item.prototype.getATime = function() {
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162 | return this._atime;
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163 | };
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164 |
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165 |
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166 |
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167 |
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168 |
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169 |
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170 | Item.prototype.setATime = function(atime) {
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171 | this._atime = atime;
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172 | };
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173 |
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174 |
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175 |
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176 |
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177 |
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178 |
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179 | Item.prototype.getCTime = function() {
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180 | return this._ctime;
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181 | };
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182 |
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183 |
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184 |
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185 |
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186 |
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187 |
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188 | Item.prototype.setCTime = function(ctime) {
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189 | this._ctime = ctime;
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190 | };
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191 |
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192 |
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193 |
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194 |
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195 |
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196 |
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197 | Item.prototype.getBirthtime = function() {
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198 | return this._birthtime;
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199 | };
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200 |
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201 |
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202 |
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203 |
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204 |
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205 |
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206 | Item.prototype.setBirthtime = function(birthtime) {
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207 | this._birthtime = birthtime;
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208 | };
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209 |
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210 |
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211 |
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212 |
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213 |
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214 |
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215 | Item.prototype.getMTime = function() {
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216 | return this._mtime;
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217 | };
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218 |
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219 |
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220 |
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221 |
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222 |
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223 |
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224 | Item.prototype.setMTime = function(mtime) {
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225 | this._mtime = mtime;
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226 | };
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227 |
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228 |
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229 |
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230 |
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231 |
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232 |
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233 | Item.prototype.getMode = function() {
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234 | return this._mode;
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235 | };
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236 |
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237 |
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238 |
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239 |
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240 |
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241 |
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242 | Item.prototype.setMode = function(mode) {
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243 | this.setCTime(new Date());
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244 | this._mode = mode;
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245 | };
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246 |
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247 |
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248 |
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249 |
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250 |
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251 |
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252 | Item.prototype.getUid = function() {
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253 | return this._uid;
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254 | };
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255 |
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256 |
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257 |
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258 |
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259 |
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260 |
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261 | Item.prototype.setUid = function(uid) {
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262 | this.setCTime(new Date());
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263 | this._uid = uid;
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264 | };
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265 |
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266 |
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267 |
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268 |
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269 |
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270 |
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271 | Item.prototype.getGid = function() {
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272 | return this._gid;
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273 | };
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274 |
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275 |
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276 |
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277 |
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278 |
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279 |
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280 | Item.prototype.setGid = function(gid) {
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281 | this.setCTime(new Date());
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282 | this._gid = gid;
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283 | };
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284 |
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285 |
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286 |
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287 |
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288 |
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289 |
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290 | Item.prototype.getStats = function() {
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291 | return {
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292 | dev: 8675309,
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293 | nlink: this.links,
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294 | uid: this.getUid(),
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295 | gid: this.getGid(),
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296 | rdev: 0,
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297 | blksize: 4096,
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298 | ino: this._id,
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299 | atime: this.getATime(),
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300 | mtime: this.getMTime(),
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301 | ctime: this.getCTime(),
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302 | birthtime: this.getBirthtime()
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303 | };
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304 | };
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305 |
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306 |
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307 |
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308 |
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309 |
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310 |
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311 | Item.prototype.toString = function() {
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312 | return '[' + this.constructor.name + ']';
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313 | };
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314 |
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315 |
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316 |
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317 |
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318 |
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319 |
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320 | exports = module.exports = Item;
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