1 | var fs = require('fs'),
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2 | randomstring = require('./randomstring');
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3 |
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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 |
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11 |
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12 |
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13 | function createFile(template, callback) {
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14 | var filename = randomstring.generate(template);
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15 |
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16 |
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17 | if (typeof callback !== 'function') {
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18 |
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19 | if (typeof Promise === 'function') {
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20 |
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21 | return new Promise(function(resolve, reject) {
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22 | createFile(template, function(err, filename) {
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23 | (err) ? reject(err) : resolve(filename);
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24 | });
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25 | });
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26 | } else {
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27 |
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28 | throw new TypeError('callback function required');
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29 | }
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30 | }
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31 |
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32 | fs.open(filename, 'ax+', 384 , function(err, fd) {
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33 | if (err) {
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34 | if (err.code === 'EEXIST') {
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35 |
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36 | setImmediate(function(tmpl, cb) {
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37 | createFile(tmpl, cb);
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38 | }, template, callback);
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39 |
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40 | return;
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41 | }
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42 |
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43 |
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44 | filename = null;
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45 | }
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46 |
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47 | if (fd) {
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48 | fs.close(fd, function(err) {
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49 | callback(err, filename);
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50 | });
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51 | } else {
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52 | callback(err, filename);
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53 | }
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54 | });
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55 | }
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56 |
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57 |
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58 |
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59 |
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60 |
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61 |
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62 |
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63 |
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64 |
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65 | function createFileSync(template) {
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66 | var isExist, filename, fd;
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67 |
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68 |
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69 | do {
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70 | isExist = false;
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71 | filename = randomstring.generate(template);
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72 | try {
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73 | fd = fs.openSync(filename, 'ax+', 384 );
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74 | } catch (e) {
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75 | if (e.code === 'EEXIST') {
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76 | isExist = true;
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77 | } else {
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78 | throw e;
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79 | }
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80 | } finally {
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81 | fd && fs.closeSync(fd);
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82 | }
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83 | } while (isExist);
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84 |
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85 | return filename;
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86 | }
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87 |
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88 |
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89 |
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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 | function createDir(template, callback) {
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98 | var dirname = randomstring.generate(template);
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99 |
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100 |
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101 | if (typeof callback !== 'function') {
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102 |
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103 | if (typeof Promise === 'function') {
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104 |
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105 | return new Promise(function(resolve, reject) {
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106 | createDir(template, function(err, dirname) {
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107 | (err) ? reject(err) : resolve(dirname);
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108 | });
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109 | });
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110 | } else {
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111 |
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112 | throw new TypeError('callback function required');
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113 | }
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114 | }
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115 |
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116 | fs.mkdir(dirname, 448 , function(err) {
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117 | if (err) {
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118 | if (err.code === 'EEXIST') {
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119 |
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120 | setImmediate(function(tmpl, cb) {
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121 | createDir(tmpl, cb);
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122 | }, template, callback);
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123 |
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124 | return;
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125 | }
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126 |
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127 |
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128 | dirname = null;
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129 | }
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130 |
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131 | callback(err, dirname);
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132 | });
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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 |
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141 |
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142 | function createDirSync(template) {
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143 | var isExist, dirname;
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144 |
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145 |
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146 | do {
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147 | isExist = false;
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148 | dirname = randomstring.generate(template);
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149 | try {
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150 | fs.mkdirSync(dirname, 448 );
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151 | } catch (e) {
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152 | if (e.code === 'EEXIST') {
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153 | isExist = true;
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154 | } else {
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155 | throw e;
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156 | }
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157 | }
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158 | } while (isExist);
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159 |
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160 | return dirname;
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161 | }
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162 |
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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 | module.exports = {
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168 | createFile: createFile,
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169 | createFileSync: createFileSync,
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170 | createDir: createDir,
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171 | createDirSync: createDirSync
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172 | };
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