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24 |
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25 |
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26 |
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27 |
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28 | var util = require('util');
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29 | var pathModule = require('path');
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30 |
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31 | var binding = process.binding('fs');
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32 | var constants = process.binding('constants');
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33 | var fs = exports;
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34 | var Stream = require('stream').Stream;
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35 | var EventEmitter = require('events').EventEmitter;
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36 |
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37 | var Readable = Stream.Readable;
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38 | var Writable = Stream.Writable;
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39 |
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40 | var kMinPoolSpace = 128;
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41 |
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42 | var O_APPEND = constants.O_APPEND || 0;
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43 | var O_CREAT = constants.O_CREAT || 0;
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44 | var O_DIRECTORY = constants.O_DIRECTORY || 0;
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45 | var O_EXCL = constants.O_EXCL || 0;
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46 | var O_NOCTTY = constants.O_NOCTTY || 0;
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47 | var O_NOFOLLOW = constants.O_NOFOLLOW || 0;
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48 | var O_RDONLY = constants.O_RDONLY || 0;
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49 | var O_RDWR = constants.O_RDWR || 0;
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50 | var O_SYMLINK = constants.O_SYMLINK || 0;
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51 | var O_SYNC = constants.O_SYNC || 0;
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52 | var O_TRUNC = constants.O_TRUNC || 0;
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53 | var O_WRONLY = constants.O_WRONLY || 0;
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54 |
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55 | var isWindows = process.platform === 'win32';
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56 |
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57 | var DEBUG = process.env.NODE_DEBUG && /fs/.test(process.env.NODE_DEBUG);
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58 |
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59 | function rethrow() {
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60 |
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61 |
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62 | if (DEBUG) {
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63 | var backtrace = new Error;
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64 | return function(err) {
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65 | if (err) {
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66 | backtrace.message = err.message;
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67 | err = backtrace;
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68 | throw err;
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69 | }
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70 | };
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71 | }
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72 |
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73 | return function(err) {
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74 | if (err) {
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75 | throw err;
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76 | }
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77 | };
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78 | }
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79 |
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80 | function maybeCallback(cb) {
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81 | return typeof cb === 'function' ? cb : rethrow();
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82 | }
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83 |
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84 |
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85 |
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86 |
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87 | function makeCallback(cb) {
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88 | if (typeof cb !== 'function') {
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89 | return rethrow();
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90 | }
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91 |
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92 | return function() {
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93 | return cb.apply(null, arguments);
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94 | };
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95 | }
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96 |
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97 | function assertEncoding(encoding) {
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98 | if (encoding && !Buffer.isEncoding(encoding)) {
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99 | throw new Error('Unknown encoding: ' + encoding);
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100 | }
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101 | }
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102 |
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103 | function nullCheck(path, callback) {
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104 | if (('' + path).indexOf('\u0000') !== -1) {
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105 | var er = new Error('Path must be a string without null bytes.');
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106 | if (!callback)
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107 | throw er;
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108 | process.nextTick(function() {
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109 | callback(er);
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110 | });
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111 | return false;
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112 | }
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113 | return true;
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114 | }
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115 |
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116 | fs.Stats = binding.Stats;
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117 |
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118 | fs.Stats.prototype._checkModeProperty = function(property) {
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119 | return ((this.mode & constants.S_IFMT) === property);
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120 | };
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121 |
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122 | fs.Stats.prototype.isDirectory = function() {
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123 | return this._checkModeProperty(constants.S_IFDIR);
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124 | };
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125 |
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126 | fs.Stats.prototype.isFile = function() {
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127 | return this._checkModeProperty(constants.S_IFREG);
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128 | };
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129 |
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130 | fs.Stats.prototype.isBlockDevice = function() {
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131 | return this._checkModeProperty(constants.S_IFBLK);
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132 | };
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133 |
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134 | fs.Stats.prototype.isCharacterDevice = function() {
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135 | return this._checkModeProperty(constants.S_IFCHR);
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136 | };
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137 |
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138 | fs.Stats.prototype.isSymbolicLink = function() {
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139 | return this._checkModeProperty(constants.S_IFLNK);
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140 | };
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141 |
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142 | fs.Stats.prototype.isFIFO = function() {
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143 | return this._checkModeProperty(constants.S_IFIFO);
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144 | };
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145 |
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146 | fs.Stats.prototype.isSocket = function() {
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147 | return this._checkModeProperty(constants.S_IFSOCK);
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148 | };
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149 |
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150 | fs.exists = function(path, callback) {
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151 | if (!nullCheck(path, cb)) return;
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152 | binding.stat(pathModule._makeLong(path), cb);
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153 | function cb(err, stats) {
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154 | if (callback) callback(err ? false : true);
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155 | }
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156 | };
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157 |
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158 | fs.existsSync = function(path) {
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159 | try {
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160 | nullCheck(path);
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161 | binding.stat(pathModule._makeLong(path));
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162 | return true;
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163 | } catch (e) {
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164 | return false;
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165 | }
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166 | };
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167 |
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168 | fs.readFile = function(path, options, callback_) {
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169 | var callback = maybeCallback(arguments[arguments.length - 1]);
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170 |
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171 | if (typeof options === 'function' || !options) {
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172 | options = { encoding: null, flag: 'r' };
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173 | } else if (typeof options === 'string') {
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174 | options = { encoding: options, flag: 'r' };
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175 | } else if (!options) {
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176 | options = { encoding: null, flag: 'r' };
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177 | } else if (typeof options !== 'object') {
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178 | throw new TypeError('Bad arguments');
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179 | }
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180 |
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181 | var encoding = options.encoding;
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182 | assertEncoding(encoding);
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183 |
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184 |
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185 | var size;
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186 | var buffer;
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187 | var buffers;
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188 | var pos = 0;
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189 | var fd;
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190 |
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191 | var flag = options.flag || 'r';
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192 | fs.open(path, flag, 438 , function(er, fd_) {
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193 | if (er) return callback(er);
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194 | fd = fd_;
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195 |
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196 | fs.fstat(fd, function(er, st) {
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197 | if (er) return callback(er);
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198 | size = st.size;
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199 | if (size === 0) {
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200 |
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201 |
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202 | buffers = [];
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203 | return read();
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204 | }
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205 |
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206 | buffer = new Buffer(size);
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207 | read();
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208 | });
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209 | });
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210 |
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211 | function read() {
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212 | if (size === 0) {
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213 | buffer = new Buffer(8192);
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214 | fs.read(fd, buffer, 0, 8192, -1, afterRead);
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215 | } else {
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216 | fs.read(fd, buffer, pos, size - pos, -1, afterRead);
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217 | }
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218 | }
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219 |
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220 | function afterRead(er, bytesRead) {
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221 | if (er) {
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222 | return fs.close(fd, function(er2) {
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223 | return callback(er);
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224 | });
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225 | }
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226 |
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227 | if (bytesRead === 0) {
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228 | return close();
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229 | }
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230 |
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231 | pos += bytesRead;
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232 | if (size !== 0) {
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233 | if (pos === size) close();
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234 | else read();
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235 | } else {
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236 |
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237 | buffers.push(buffer.slice(0, bytesRead));
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238 | read();
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239 | }
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240 | }
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241 |
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242 | function close() {
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243 | fs.close(fd, function(er) {
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244 | if (size === 0) {
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245 |
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246 | buffer = Buffer.concat(buffers, pos);
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247 | } else if (pos < size) {
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248 | buffer = buffer.slice(0, pos);
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249 | }
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250 |
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251 | if (encoding) buffer = buffer.toString(encoding);
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252 | return callback(er, buffer);
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253 | });
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254 | }
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255 | };
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256 |
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257 | fs.readFileSync = function(path, options) {
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258 | if (!options) {
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259 | options = { encoding: null, flag: 'r' };
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260 | } else if (typeof options === 'string') {
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261 | options = { encoding: options, flag: 'r' };
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262 | } else if (typeof options !== 'object') {
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263 | throw new TypeError('Bad arguments');
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264 | }
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265 |
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266 | var encoding = options.encoding;
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267 | assertEncoding(encoding);
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268 |
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269 | var flag = options.flag || 'r';
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270 | var fd = fs.openSync(path, flag, 438 );
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271 |
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272 | var size;
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273 | var threw = true;
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274 | try {
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275 | size = fs.fstatSync(fd).size;
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276 | threw = false;
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277 | } finally {
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278 | if (threw) fs.closeSync(fd);
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279 | }
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280 |
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281 | var pos = 0;
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282 | var buffer;
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283 | var buffers;
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284 |
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285 | if (size === 0) {
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286 | buffers = [];
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287 | } else {
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288 | buffer = new Buffer(size);
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289 | }
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290 |
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291 | var done = false;
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292 | while (!done) {
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293 | var threw = true;
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294 | try {
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295 | if (size !== 0) {
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296 | var bytesRead = fs.readSync(fd, buffer, pos, size - pos);
|
297 | } else {
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298 |
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299 |
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300 | buffer = new Buffer(8192);
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301 | var bytesRead = fs.readSync(fd, buffer, 0, 8192);
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302 | if (bytesRead) {
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303 | buffers.push(buffer.slice(0, bytesRead));
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304 | }
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305 | }
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306 | threw = false;
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307 | } finally {
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308 | if (threw) fs.closeSync(fd);
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309 | }
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310 |
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311 | pos += bytesRead;
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312 | done = (bytesRead === 0) || (size !== 0 && pos >= size);
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313 | }
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314 |
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315 | fs.closeSync(fd);
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316 |
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317 | if (size === 0) {
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318 |
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319 | buffer = Buffer.concat(buffers, pos);
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320 | } else if (pos < size) {
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321 | buffer = buffer.slice(0, pos);
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322 | }
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323 |
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324 | if (encoding) buffer = buffer.toString(encoding);
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325 | return buffer;
|
326 | };
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327 |
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328 |
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329 |
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330 | function stringToFlags(flag) {
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331 |
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332 | if (typeof flag !== 'string') {
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333 | return flag;
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334 | }
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335 |
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336 |
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337 |
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338 | if (!O_EXCL && ~flag.indexOf('x')) {
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339 | throw errnoException('ENOSYS', 'fs.open(O_EXCL)');
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340 | }
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341 |
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342 | switch (flag) {
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343 | case 'r' : return O_RDONLY;
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344 | case 'rs' : return O_RDONLY | O_SYNC;
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345 | case 'r+' : return O_RDWR;
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346 | case 'rs+' : return O_RDWR | O_SYNC;
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347 |
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348 | case 'w' : return O_TRUNC | O_CREAT | O_WRONLY;
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349 | case 'wx' :
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350 | case 'xw' : return O_TRUNC | O_CREAT | O_WRONLY | O_EXCL;
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351 |
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352 | case 'w+' : return O_TRUNC | O_CREAT | O_RDWR;
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353 | case 'wx+':
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354 | case 'xw+': return O_TRUNC | O_CREAT | O_RDWR | O_EXCL;
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355 |
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356 | case 'a' : return O_APPEND | O_CREAT | O_WRONLY;
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357 | case 'ax' :
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358 | case 'xa' : return O_APPEND | O_CREAT | O_WRONLY | O_EXCL;
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359 |
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360 | case 'a+' : return O_APPEND | O_CREAT | O_RDWR;
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361 | case 'ax+':
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362 | case 'xa+': return O_APPEND | O_CREAT | O_RDWR | O_EXCL;
|
363 | }
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364 |
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365 | throw new Error('Unknown file open flag: ' + flag);
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366 | }
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367 |
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368 |
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369 | Object.defineProperty(exports, '_stringToFlags', {
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370 | enumerable: false,
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371 | value: stringToFlags
|
372 | });
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373 |
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374 |
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375 |
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376 |
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377 |
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378 | fs.close = function(fd, callback) {
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379 | binding.close(fd, makeCallback(callback));
|
380 | };
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381 |
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382 | fs.closeSync = function(fd) {
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383 | return binding.close(fd);
|
384 | };
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385 |
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386 | function modeNum(m, def) {
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387 | switch (typeof m) {
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388 | case 'number': return m;
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389 | case 'string': return parseInt(m, 8);
|
390 | default:
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391 | if (def) {
|
392 | return modeNum(def);
|
393 | } else {
|
394 | return undefined;
|
395 | }
|
396 | }
|
397 | }
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398 |
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399 | fs.open = function(path, flags, mode, callback) {
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400 | callback = makeCallback(arguments[arguments.length - 1]);
|
401 | mode = modeNum(mode, 438 );
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402 |
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403 | if (!nullCheck(path, callback)) return;
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404 | binding.open(pathModule._makeLong(path),
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405 | stringToFlags(flags),
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406 | mode,
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407 | callback);
|
408 | };
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409 |
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410 | fs.openSync = function(path, flags, mode) {
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411 | mode = modeNum(mode, 438 );
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412 | nullCheck(path);
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413 | return binding.open(pathModule._makeLong(path), stringToFlags(flags), mode);
|
414 | };
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415 |
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416 | fs.read = function(fd, buffer, offset, length, position, callback) {
|
417 | if (!Buffer.isBuffer(buffer)) {
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418 |
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419 | var cb = arguments[4],
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420 | encoding = arguments[3];
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421 |
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422 | assertEncoding(encoding);
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423 |
|
424 | position = arguments[2];
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425 | length = arguments[1];
|
426 | buffer = new Buffer(length);
|
427 | offset = 0;
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428 |
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429 | callback = function(err, bytesRead) {
|
430 | if (!cb) return;
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431 |
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432 | var str = (bytesRead > 0) ? buffer.toString(encoding, 0, bytesRead) : '';
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433 |
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434 | (cb)(err, str, bytesRead);
|
435 | };
|
436 | }
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437 |
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438 | function wrapper(err, bytesRead) {
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439 |
|
440 | callback && callback(err, bytesRead || 0, buffer);
|
441 | }
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442 |
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443 | binding.read(fd, buffer, offset, length, position, wrapper);
|
444 | };
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445 |
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446 | fs.readSync = function(fd, buffer, offset, length, position) {
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447 | var legacy = false;
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448 | if (!Buffer.isBuffer(buffer)) {
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449 |
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450 | legacy = true;
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451 | var encoding = arguments[3];
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452 |
|
453 | assertEncoding(encoding);
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454 |
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455 | position = arguments[2];
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456 | length = arguments[1];
|
457 | buffer = new Buffer(length);
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458 |
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459 | offset = 0;
|
460 | }
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461 |
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462 | var r = binding.read(fd, buffer, offset, length, position);
|
463 | if (!legacy) {
|
464 | return r;
|
465 | }
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466 |
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467 | var str = (r > 0) ? buffer.toString(encoding, 0, r) : '';
|
468 | return [str, r];
|
469 | };
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470 |
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471 | fs.write = function(fd, buffer, offset, length, position, callback) {
|
472 | if (!Buffer.isBuffer(buffer)) {
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473 |
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474 | callback = arguments[4];
|
475 | position = arguments[2];
|
476 | assertEncoding(arguments[3]);
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477 |
|
478 | buffer = new Buffer('' + arguments[1], arguments[3]);
|
479 | offset = 0;
|
480 | length = buffer.length;
|
481 | }
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482 |
|
483 | if (!length) {
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484 | if (typeof callback == 'function') {
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485 | process.nextTick(function() {
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486 | callback(undefined, 0);
|
487 | });
|
488 | }
|
489 | return;
|
490 | }
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491 |
|
492 | callback = maybeCallback(callback);
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493 |
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494 | function wrapper(err, written) {
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495 |
|
496 | callback(err, written || 0, buffer);
|
497 | }
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498 |
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499 | binding.write(fd, buffer, offset, length, position, wrapper);
|
500 | };
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501 |
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502 | fs.writeSync = function(fd, buffer, offset, length, position) {
|
503 | if (!Buffer.isBuffer(buffer)) {
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504 |
|
505 | position = arguments[2];
|
506 | assertEncoding(arguments[3]);
|
507 |
|
508 | buffer = new Buffer('' + arguments[1], arguments[3]);
|
509 | offset = 0;
|
510 | length = buffer.length;
|
511 | }
|
512 | if (!length) return 0;
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513 |
|
514 | return binding.write(fd, buffer, offset, length, position);
|
515 | };
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516 |
|
517 | fs.rename = function(oldPath, newPath, callback) {
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518 | callback = makeCallback(callback);
|
519 | if (!nullCheck(oldPath, callback)) return;
|
520 | if (!nullCheck(newPath, callback)) return;
|
521 | binding.rename(pathModule._makeLong(oldPath),
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522 | pathModule._makeLong(newPath),
|
523 | callback);
|
524 | };
|
525 |
|
526 | fs.renameSync = function(oldPath, newPath) {
|
527 | nullCheck(oldPath);
|
528 | nullCheck(newPath);
|
529 | return binding.rename(pathModule._makeLong(oldPath),
|
530 | pathModule._makeLong(newPath));
|
531 | };
|
532 |
|
533 | fs.truncate = function(path, len, callback) {
|
534 | if (typeof path === 'number') {
|
535 |
|
536 | return fs.ftruncate(path, len, callback);
|
537 | }
|
538 | if (typeof len === 'function') {
|
539 | callback = len;
|
540 | len = 0;
|
541 | } else if (typeof len === 'undefined') {
|
542 | len = 0;
|
543 | }
|
544 | callback = maybeCallback(callback);
|
545 | fs.open(path, 'w', function(er, fd) {
|
546 | if (er) return callback(er);
|
547 | binding.ftruncate(fd, len, function(er) {
|
548 | fs.close(fd, function(er2) {
|
549 | callback(er || er2);
|
550 | });
|
551 | });
|
552 | });
|
553 | };
|
554 |
|
555 | fs.truncateSync = function(path, len) {
|
556 | if (typeof path === 'number') {
|
557 |
|
558 | return fs.ftruncateSync(path, len);
|
559 | }
|
560 | if (typeof len === 'undefined') {
|
561 | len = 0;
|
562 | }
|
563 |
|
564 | var fd = fs.openSync(path, 'w');
|
565 | try {
|
566 | var ret = fs.ftruncateSync(fd, len);
|
567 | } finally {
|
568 | fs.closeSync(fd);
|
569 | }
|
570 | return ret;
|
571 | };
|
572 |
|
573 | fs.ftruncate = function(fd, len, callback) {
|
574 | if (typeof len === 'function') {
|
575 | callback = len;
|
576 | len = 0;
|
577 | } else if (typeof len === 'undefined') {
|
578 | len = 0;
|
579 | }
|
580 | binding.ftruncate(fd, len, makeCallback(callback));
|
581 | };
|
582 |
|
583 | fs.ftruncateSync = function(fd, len) {
|
584 | if (typeof len === 'undefined') {
|
585 | len = 0;
|
586 | }
|
587 | return binding.ftruncate(fd, len);
|
588 | };
|
589 |
|
590 | fs.rmdir = function(path, callback) {
|
591 | callback = makeCallback(callback);
|
592 | if (!nullCheck(path, callback)) return;
|
593 | binding.rmdir(pathModule._makeLong(path), callback);
|
594 | };
|
595 |
|
596 | fs.rmdirSync = function(path) {
|
597 | nullCheck(path);
|
598 | return binding.rmdir(pathModule._makeLong(path));
|
599 | };
|
600 |
|
601 | fs.fdatasync = function(fd, callback) {
|
602 | binding.fdatasync(fd, makeCallback(callback));
|
603 | };
|
604 |
|
605 | fs.fdatasyncSync = function(fd) {
|
606 | return binding.fdatasync(fd);
|
607 | };
|
608 |
|
609 | fs.fsync = function(fd, callback) {
|
610 | binding.fsync(fd, makeCallback(callback));
|
611 | };
|
612 |
|
613 | fs.fsyncSync = function(fd) {
|
614 | return binding.fsync(fd);
|
615 | };
|
616 |
|
617 | fs.mkdir = function(path, mode, callback) {
|
618 | if (typeof mode === 'function') callback = mode;
|
619 | callback = makeCallback(callback);
|
620 | if (!nullCheck(path, callback)) return;
|
621 | binding.mkdir(pathModule._makeLong(path),
|
622 | modeNum(mode, 511 ),
|
623 | callback);
|
624 | };
|
625 |
|
626 | fs.mkdirSync = function(path, mode) {
|
627 | nullCheck(path);
|
628 | return binding.mkdir(pathModule._makeLong(path),
|
629 | modeNum(mode, 511 ));
|
630 | };
|
631 |
|
632 | fs.readdir = function(path, callback) {
|
633 | callback = makeCallback(callback);
|
634 | if (!nullCheck(path, callback)) return;
|
635 | binding.readdir(pathModule._makeLong(path), callback);
|
636 | };
|
637 |
|
638 | fs.readdirSync = function(path) {
|
639 | nullCheck(path);
|
640 | return binding.readdir(pathModule._makeLong(path));
|
641 | };
|
642 |
|
643 | fs.fstat = function(fd, callback) {
|
644 | binding.fstat(fd, makeCallback(callback));
|
645 | };
|
646 |
|
647 | fs.lstat = function(path, callback) {
|
648 | callback = makeCallback(callback);
|
649 | if (!nullCheck(path, callback)) return;
|
650 | binding.lstat(pathModule._makeLong(path), callback);
|
651 | };
|
652 |
|
653 | fs.stat = function(path, callback) {
|
654 | callback = makeCallback(callback);
|
655 | if (!nullCheck(path, callback)) return;
|
656 | binding.stat(pathModule._makeLong(path), callback);
|
657 | };
|
658 |
|
659 | fs.fstatSync = function(fd) {
|
660 | return binding.fstat(fd);
|
661 | };
|
662 |
|
663 | fs.lstatSync = function(path) {
|
664 | nullCheck(path);
|
665 | return binding.lstat(pathModule._makeLong(path));
|
666 | };
|
667 |
|
668 | fs.statSync = function(path) {
|
669 | nullCheck(path);
|
670 | return binding.stat(pathModule._makeLong(path));
|
671 | };
|
672 |
|
673 | fs.readlink = function(path, callback) {
|
674 | callback = makeCallback(callback);
|
675 | if (!nullCheck(path, callback)) return;
|
676 | binding.readlink(pathModule._makeLong(path), callback);
|
677 | };
|
678 |
|
679 | fs.readlinkSync = function(path) {
|
680 | nullCheck(path);
|
681 | return binding.readlink(pathModule._makeLong(path));
|
682 | };
|
683 |
|
684 | function preprocessSymlinkDestination(path, type) {
|
685 | if (!isWindows) {
|
686 |
|
687 | return path;
|
688 | } else if (type === 'junction') {
|
689 |
|
690 | return pathModule._makeLong(path);
|
691 | } else {
|
692 |
|
693 | return ('' + path).replace(/\//g, '\\');
|
694 | }
|
695 | }
|
696 |
|
697 | fs.symlink = function(destination, path, type_, callback) {
|
698 | var type = (typeof type_ === 'string' ? type_ : null);
|
699 | var callback = makeCallback(arguments[arguments.length - 1]);
|
700 |
|
701 | if (!nullCheck(destination, callback)) return;
|
702 | if (!nullCheck(path, callback)) return;
|
703 |
|
704 | binding.symlink(preprocessSymlinkDestination(destination, type),
|
705 | pathModule._makeLong(path),
|
706 | type,
|
707 | callback);
|
708 | };
|
709 |
|
710 | fs.symlinkSync = function(destination, path, type) {
|
711 | type = (typeof type === 'string' ? type : null);
|
712 |
|
713 | nullCheck(destination);
|
714 | nullCheck(path);
|
715 |
|
716 | return binding.symlink(preprocessSymlinkDestination(destination, type),
|
717 | pathModule._makeLong(path),
|
718 | type);
|
719 | };
|
720 |
|
721 | fs.link = function(srcpath, dstpath, callback) {
|
722 | callback = makeCallback(callback);
|
723 | if (!nullCheck(srcpath, callback)) return;
|
724 | if (!nullCheck(dstpath, callback)) return;
|
725 |
|
726 | binding.link(pathModule._makeLong(srcpath),
|
727 | pathModule._makeLong(dstpath),
|
728 | callback);
|
729 | };
|
730 |
|
731 | fs.linkSync = function(srcpath, dstpath) {
|
732 | nullCheck(srcpath);
|
733 | nullCheck(dstpath);
|
734 | return binding.link(pathModule._makeLong(srcpath),
|
735 | pathModule._makeLong(dstpath));
|
736 | };
|
737 |
|
738 | fs.unlink = function(path, callback) {
|
739 | callback = makeCallback(callback);
|
740 | if (!nullCheck(path, callback)) return;
|
741 | binding.unlink(pathModule._makeLong(path), callback);
|
742 | };
|
743 |
|
744 | fs.unlinkSync = function(path) {
|
745 | nullCheck(path);
|
746 | return binding.unlink(pathModule._makeLong(path));
|
747 | };
|
748 |
|
749 | fs.fchmod = function(fd, mode, callback) {
|
750 | binding.fchmod(fd, modeNum(mode), makeCallback(callback));
|
751 | };
|
752 |
|
753 | fs.fchmodSync = function(fd, mode) {
|
754 | return binding.fchmod(fd, modeNum(mode));
|
755 | };
|
756 |
|
757 | if (constants.hasOwnProperty('O_SYMLINK')) {
|
758 | fs.lchmod = function(path, mode, callback) {
|
759 | callback = maybeCallback(callback);
|
760 | fs.open(path, constants.O_WRONLY | constants.O_SYMLINK, function(err, fd) {
|
761 | if (err) {
|
762 | callback(err);
|
763 | return;
|
764 | }
|
765 |
|
766 |
|
767 | fs.fchmod(fd, mode, function(err) {
|
768 | fs.close(fd, function(err2) {
|
769 | callback(err || err2);
|
770 | });
|
771 | });
|
772 | });
|
773 | };
|
774 |
|
775 | fs.lchmodSync = function(path, mode) {
|
776 | var fd = fs.openSync(path, constants.O_WRONLY | constants.O_SYMLINK);
|
777 |
|
778 |
|
779 |
|
780 | var err, err2;
|
781 | try {
|
782 | var ret = fs.fchmodSync(fd, mode);
|
783 | } catch (er) {
|
784 | err = er;
|
785 | }
|
786 | try {
|
787 | fs.closeSync(fd);
|
788 | } catch (er) {
|
789 | err2 = er;
|
790 | }
|
791 | if (err || err2) throw (err || err2);
|
792 | return ret;
|
793 | };
|
794 | }
|
795 |
|
796 |
|
797 | fs.chmod = function(path, mode, callback) {
|
798 | callback = makeCallback(callback);
|
799 | if (!nullCheck(path, callback)) return;
|
800 | binding.chmod(pathModule._makeLong(path),
|
801 | modeNum(mode),
|
802 | callback);
|
803 | };
|
804 |
|
805 | fs.chmodSync = function(path, mode) {
|
806 | nullCheck(path);
|
807 | return binding.chmod(pathModule._makeLong(path), modeNum(mode));
|
808 | };
|
809 |
|
810 | if (constants.hasOwnProperty('O_SYMLINK')) {
|
811 | fs.lchown = function(path, uid, gid, callback) {
|
812 | callback = maybeCallback(callback);
|
813 | fs.open(path, constants.O_WRONLY | constants.O_SYMLINK, function(err, fd) {
|
814 | if (err) {
|
815 | callback(err);
|
816 | return;
|
817 | }
|
818 | fs.fchown(fd, uid, gid, callback);
|
819 | });
|
820 | };
|
821 |
|
822 | fs.lchownSync = function(path, uid, gid) {
|
823 | var fd = fs.openSync(path, constants.O_WRONLY | constants.O_SYMLINK);
|
824 | return fs.fchownSync(fd, uid, gid);
|
825 | };
|
826 | }
|
827 |
|
828 | fs.fchown = function(fd, uid, gid, callback) {
|
829 | binding.fchown(fd, uid, gid, makeCallback(callback));
|
830 | };
|
831 |
|
832 | fs.fchownSync = function(fd, uid, gid) {
|
833 | return binding.fchown(fd, uid, gid);
|
834 | };
|
835 |
|
836 | fs.chown = function(path, uid, gid, callback) {
|
837 | callback = makeCallback(callback);
|
838 | if (!nullCheck(path, callback)) return;
|
839 | binding.chown(pathModule._makeLong(path), uid, gid, callback);
|
840 | };
|
841 |
|
842 | fs.chownSync = function(path, uid, gid) {
|
843 | nullCheck(path);
|
844 | return binding.chown(pathModule._makeLong(path), uid, gid);
|
845 | };
|
846 |
|
847 |
|
848 | function toUnixTimestamp(time) {
|
849 | if (typeof time == 'number') {
|
850 | return time;
|
851 | }
|
852 | if (time instanceof Date) {
|
853 |
|
854 | return time.getTime() / 1000;
|
855 | }
|
856 | throw new Error('Cannot parse time: ' + time);
|
857 | }
|
858 |
|
859 |
|
860 | fs._toUnixTimestamp = toUnixTimestamp;
|
861 |
|
862 | fs.utimes = function(path, atime, mtime, callback) {
|
863 | callback = makeCallback(callback);
|
864 | if (!nullCheck(path, callback)) return;
|
865 | binding.utimes(pathModule._makeLong(path),
|
866 | toUnixTimestamp(atime),
|
867 | toUnixTimestamp(mtime),
|
868 | callback);
|
869 | };
|
870 |
|
871 | fs.utimesSync = function(path, atime, mtime) {
|
872 | nullCheck(path);
|
873 | atime = toUnixTimestamp(atime);
|
874 | mtime = toUnixTimestamp(mtime);
|
875 | binding.utimes(pathModule._makeLong(path), atime, mtime);
|
876 | };
|
877 |
|
878 | fs.futimes = function(fd, atime, mtime, callback) {
|
879 | atime = toUnixTimestamp(atime);
|
880 | mtime = toUnixTimestamp(mtime);
|
881 | binding.futimes(fd, atime, mtime, makeCallback(callback));
|
882 | };
|
883 |
|
884 | fs.futimesSync = function(fd, atime, mtime) {
|
885 | atime = toUnixTimestamp(atime);
|
886 | mtime = toUnixTimestamp(mtime);
|
887 | binding.futimes(fd, atime, mtime);
|
888 | };
|
889 |
|
890 | function writeAll(fd, buffer, offset, length, position, callback) {
|
891 | callback = maybeCallback(arguments[arguments.length - 1]);
|
892 |
|
893 |
|
894 | fs.write(fd, buffer, offset, length, position, function(writeErr, written) {
|
895 | if (writeErr) {
|
896 | fs.close(fd, function() {
|
897 | if (callback) callback(writeErr);
|
898 | });
|
899 | } else {
|
900 | if (written === length) {
|
901 | fs.close(fd, callback);
|
902 | } else {
|
903 | offset += written;
|
904 | length -= written;
|
905 | position += written;
|
906 | writeAll(fd, buffer, offset, length, position, callback);
|
907 | }
|
908 | }
|
909 | });
|
910 | }
|
911 |
|
912 | fs.writeFile = function(path, data, options, callback) {
|
913 | var callback = maybeCallback(arguments[arguments.length - 1]);
|
914 |
|
915 | if (typeof options === 'function' || !options) {
|
916 | options = { encoding: 'utf8', mode: 438 , flag: 'w' };
|
917 | } else if (typeof options === 'string') {
|
918 | options = { encoding: options, mode: 438, flag: 'w' };
|
919 | } else if (!options) {
|
920 | options = { encoding: 'utf8', mode: 438 , flag: 'w' };
|
921 | } else if (typeof options !== 'object') {
|
922 | throw new TypeError('Bad arguments');
|
923 | }
|
924 |
|
925 | assertEncoding(options.encoding);
|
926 |
|
927 | var flag = options.flag || 'w';
|
928 | fs.open(path, options.flag || 'w', options.mode, function(openErr, fd) {
|
929 | if (openErr) {
|
930 | if (callback) callback(openErr);
|
931 | } else {
|
932 | var buffer = Buffer.isBuffer(data) ? data : new Buffer('' + data,
|
933 | options.encoding || 'utf8');
|
934 | var position = /a/.test(flag) ? null : 0;
|
935 | writeAll(fd, buffer, 0, buffer.length, position, callback);
|
936 | }
|
937 | });
|
938 | };
|
939 |
|
940 | fs.writeFileSync = function(path, data, options) {
|
941 | if (!options) {
|
942 | options = { encoding: 'utf8', mode: 438 , flag: 'w' };
|
943 | } else if (typeof options === 'string') {
|
944 | options = { encoding: options, mode: 438, flag: 'w' };
|
945 | } else if (typeof options !== 'object') {
|
946 | throw new TypeError('Bad arguments');
|
947 | }
|
948 |
|
949 | assertEncoding(options.encoding);
|
950 |
|
951 | var flag = options.flag || 'w';
|
952 | var fd = fs.openSync(path, flag);
|
953 | if (!Buffer.isBuffer(data)) {
|
954 | data = new Buffer('' + data, options.encoding || 'utf8');
|
955 | }
|
956 | var written = 0;
|
957 | var length = data.length;
|
958 | var position = /a/.test(flag) ? null : 0;
|
959 | try {
|
960 | while (written < length) {
|
961 | written += fs.writeSync(fd, data, written, length - written, position);
|
962 | position += written;
|
963 | }
|
964 | } finally {
|
965 | fs.closeSync(fd);
|
966 | }
|
967 | };
|
968 |
|
969 | fs.appendFile = function(path, data, options, callback_) {
|
970 | var callback = maybeCallback(arguments[arguments.length - 1]);
|
971 |
|
972 | if (typeof options === 'function' || !options) {
|
973 | options = { encoding: 'utf8', mode: 438 , flag: 'a' };
|
974 | } else if (typeof options === 'string') {
|
975 | options = { encoding: options, mode: 438, flag: 'a' };
|
976 | } else if (!options) {
|
977 | options = { encoding: 'utf8', mode: 438 , flag: 'a' };
|
978 | } else if (typeof options !== 'object') {
|
979 | throw new TypeError('Bad arguments');
|
980 | }
|
981 |
|
982 | if (!options.flag)
|
983 | options = util._extend({ flag: 'a' }, options);
|
984 | fs.writeFile(path, data, options, callback);
|
985 | };
|
986 |
|
987 | fs.appendFileSync = function(path, data, options) {
|
988 | if (!options) {
|
989 | options = { encoding: 'utf8', mode: 438 , flag: 'a' };
|
990 | } else if (typeof options === 'string') {
|
991 | options = { encoding: options, mode: 438, flag: 'a' };
|
992 | } else if (typeof options !== 'object') {
|
993 | throw new TypeError('Bad arguments');
|
994 | }
|
995 | if (!options.flag)
|
996 | options = util._extend({ flag: 'a' }, options);
|
997 |
|
998 | fs.writeFileSync(path, data, options);
|
999 | };
|
1000 |
|
1001 | function errnoException(errorno, syscall) {
|
1002 |
|
1003 |
|
1004 |
|
1005 | var e = new Error(syscall + ' ' + errorno);
|
1006 | e.errno = e.code = errorno;
|
1007 | e.syscall = syscall;
|
1008 | return e;
|
1009 | }
|
1010 |
|
1011 |
|
1012 | function FSWatcher() {
|
1013 | EventEmitter.call(this);
|
1014 |
|
1015 | var self = this;
|
1016 | var FSEvent = process.binding('fs_event_wrap').FSEvent;
|
1017 | this._handle = new FSEvent();
|
1018 | this._handle.owner = this;
|
1019 |
|
1020 | this._handle.onchange = function(status, event, filename) {
|
1021 | if (status) {
|
1022 | self._handle.close();
|
1023 | self.emit('error', errnoException(process._errno, 'watch'));
|
1024 | } else {
|
1025 | self.emit('change', event, filename);
|
1026 | }
|
1027 | };
|
1028 | }
|
1029 | util.inherits(FSWatcher, EventEmitter);
|
1030 |
|
1031 | FSWatcher.prototype.start = function(filename, persistent) {
|
1032 | nullCheck(filename);
|
1033 | var r = this._handle.start(pathModule._makeLong(filename), persistent);
|
1034 |
|
1035 | if (r) {
|
1036 | this._handle.close();
|
1037 | throw errnoException(process._errno, 'watch');
|
1038 | }
|
1039 | };
|
1040 |
|
1041 | FSWatcher.prototype.close = function() {
|
1042 | this._handle.close();
|
1043 | };
|
1044 |
|
1045 | fs.watch = function(filename) {
|
1046 | nullCheck(filename);
|
1047 | var watcher;
|
1048 | var options;
|
1049 | var listener;
|
1050 |
|
1051 | if ('object' == typeof arguments[1]) {
|
1052 | options = arguments[1];
|
1053 | listener = arguments[2];
|
1054 | } else {
|
1055 | options = {};
|
1056 | listener = arguments[1];
|
1057 | }
|
1058 |
|
1059 | if (options.persistent === undefined) options.persistent = true;
|
1060 |
|
1061 | watcher = new FSWatcher();
|
1062 | watcher.start(filename, options.persistent);
|
1063 |
|
1064 | if (listener) {
|
1065 | watcher.addListener('change', listener);
|
1066 | }
|
1067 |
|
1068 | return watcher;
|
1069 | };
|
1070 |
|
1071 |
|
1072 |
|
1073 |
|
1074 | function StatWatcher() {
|
1075 | EventEmitter.call(this);
|
1076 |
|
1077 | var self = this;
|
1078 | this._handle = new binding.StatWatcher();
|
1079 |
|
1080 |
|
1081 |
|
1082 | var oldStatus = -1;
|
1083 |
|
1084 | this._handle.onchange = function(current, previous, newStatus) {
|
1085 | if (oldStatus === -1 &&
|
1086 | newStatus === -1 &&
|
1087 | current.nlink === previous.nlink) return;
|
1088 |
|
1089 | oldStatus = newStatus;
|
1090 | self.emit('change', current, previous);
|
1091 | };
|
1092 |
|
1093 | this._handle.onstop = function() {
|
1094 | self.emit('stop');
|
1095 | };
|
1096 | }
|
1097 | util.inherits(StatWatcher, EventEmitter);
|
1098 |
|
1099 |
|
1100 | StatWatcher.prototype.start = function(filename, persistent, interval) {
|
1101 | nullCheck(filename);
|
1102 | this._handle.start(pathModule._makeLong(filename), persistent, interval);
|
1103 | };
|
1104 |
|
1105 |
|
1106 | StatWatcher.prototype.stop = function() {
|
1107 | this._handle.stop();
|
1108 | };
|
1109 |
|
1110 |
|
1111 | var statWatchers = {};
|
1112 | function inStatWatchers(filename) {
|
1113 | return Object.prototype.hasOwnProperty.call(statWatchers, filename) &&
|
1114 | statWatchers[filename];
|
1115 | }
|
1116 |
|
1117 |
|
1118 | fs.watchFile = function(filename) {
|
1119 | nullCheck(filename);
|
1120 | var stat;
|
1121 | var listener;
|
1122 |
|
1123 | var options = {
|
1124 |
|
1125 |
|
1126 |
|
1127 | interval: 5007,
|
1128 | persistent: true
|
1129 | };
|
1130 |
|
1131 | if ('object' == typeof arguments[1]) {
|
1132 | options = util._extend(options, arguments[1]);
|
1133 | listener = arguments[2];
|
1134 | } else {
|
1135 | listener = arguments[1];
|
1136 | }
|
1137 |
|
1138 | if (!listener) {
|
1139 | throw new Error('watchFile requires a listener function');
|
1140 | }
|
1141 |
|
1142 | if (inStatWatchers(filename)) {
|
1143 | stat = statWatchers[filename];
|
1144 | } else {
|
1145 | stat = statWatchers[filename] = new StatWatcher();
|
1146 | stat.start(filename, options.persistent, options.interval);
|
1147 | }
|
1148 | stat.addListener('change', listener);
|
1149 | return stat;
|
1150 | };
|
1151 |
|
1152 | fs.unwatchFile = function(filename, listener) {
|
1153 | nullCheck(filename);
|
1154 | if (!inStatWatchers(filename)) return;
|
1155 |
|
1156 | var stat = statWatchers[filename];
|
1157 |
|
1158 | if (typeof listener === 'function') {
|
1159 | stat.removeListener('change', listener);
|
1160 | } else {
|
1161 | stat.removeAllListeners('change');
|
1162 | }
|
1163 |
|
1164 | if (EventEmitter.listenerCount(stat, 'change') === 0) {
|
1165 | stat.stop();
|
1166 | statWatchers[filename] = undefined;
|
1167 | }
|
1168 | };
|
1169 |
|
1170 |
|
1171 |
|
1172 |
|
1173 |
|
1174 | var normalize = pathModule.normalize;
|
1175 |
|
1176 |
|
1177 |
|
1178 | if (isWindows) {
|
1179 | var nextPartRe = /(.*?)(?:[\/\\]+|$)/g;
|
1180 | } else {
|
1181 | var nextPartRe = /(.*?)(?:[\/]+|$)/g;
|
1182 | }
|
1183 |
|
1184 |
|
1185 | if (isWindows) {
|
1186 | var splitRootRe = /^(?:[a-zA-Z]:|[\\\/]{2}[^\\\/]+[\\\/][^\\\/]+)?[\\\/]*/;
|
1187 | } else {
|
1188 | var splitRootRe = /^[\/]*/;
|
1189 | }
|
1190 |
|
1191 | fs.realpathSync = function realpathSync(p, cache) {
|
1192 |
|
1193 | p = pathModule.resolve(p);
|
1194 |
|
1195 | if (cache && Object.prototype.hasOwnProperty.call(cache, p)) {
|
1196 | return cache[p];
|
1197 | }
|
1198 |
|
1199 | var original = p,
|
1200 | seenLinks = {},
|
1201 | knownHard = {};
|
1202 |
|
1203 |
|
1204 | var pos;
|
1205 |
|
1206 | var current;
|
1207 |
|
1208 | var base;
|
1209 |
|
1210 | var previous;
|
1211 |
|
1212 | start();
|
1213 |
|
1214 | function start() {
|
1215 |
|
1216 | var m = splitRootRe.exec(p);
|
1217 | pos = m[0].length;
|
1218 | current = m[0];
|
1219 | base = m[0];
|
1220 | previous = '';
|
1221 |
|
1222 |
|
1223 | if (isWindows && !knownHard[base]) {
|
1224 | fs.lstatSync(base);
|
1225 | knownHard[base] = true;
|
1226 | }
|
1227 | }
|
1228 |
|
1229 |
|
1230 |
|
1231 |
|
1232 | while (pos < p.length) {
|
1233 |
|
1234 | nextPartRe.lastIndex = pos;
|
1235 | var result = nextPartRe.exec(p);
|
1236 | previous = current;
|
1237 | current += result[0];
|
1238 | base = previous + result[1];
|
1239 | pos = nextPartRe.lastIndex;
|
1240 |
|
1241 |
|
1242 | if (knownHard[base] || (cache && cache[base] === base)) {
|
1243 | continue;
|
1244 | }
|
1245 |
|
1246 | var resolvedLink;
|
1247 | if (cache && Object.prototype.hasOwnProperty.call(cache, base)) {
|
1248 |
|
1249 | resolvedLink = cache[base];
|
1250 | } else {
|
1251 | var stat = fs.lstatSync(base);
|
1252 | if (!stat.isSymbolicLink()) {
|
1253 | knownHard[base] = true;
|
1254 | if (cache) cache[base] = base;
|
1255 | continue;
|
1256 | }
|
1257 |
|
1258 |
|
1259 |
|
1260 | var linkTarget = null;
|
1261 | if (!isWindows) {
|
1262 | var id = stat.dev.toString(32) + ':' + stat.ino.toString(32);
|
1263 | if (seenLinks.hasOwnProperty(id)) {
|
1264 | linkTarget = seenLinks[id];
|
1265 | }
|
1266 | }
|
1267 | if (linkTarget === null) {
|
1268 | fs.statSync(base);
|
1269 | linkTarget = fs.readlinkSync(base);
|
1270 | }
|
1271 | resolvedLink = pathModule.resolve(previous, linkTarget);
|
1272 |
|
1273 | if (cache) cache[base] = resolvedLink;
|
1274 | if (!isWindows) seenLinks[id] = linkTarget;
|
1275 | }
|
1276 |
|
1277 |
|
1278 | p = pathModule.resolve(resolvedLink, p.slice(pos));
|
1279 | start();
|
1280 | }
|
1281 |
|
1282 | if (cache) cache[original] = p;
|
1283 |
|
1284 | return p;
|
1285 | };
|
1286 |
|
1287 |
|
1288 | fs.realpath = function realpath(p, cache, cb) {
|
1289 | if (typeof cb !== 'function') {
|
1290 | cb = maybeCallback(cache);
|
1291 | cache = null;
|
1292 | }
|
1293 |
|
1294 |
|
1295 | p = pathModule.resolve(p);
|
1296 |
|
1297 | if (cache && Object.prototype.hasOwnProperty.call(cache, p)) {
|
1298 | return process.nextTick(cb.bind(null, null, cache[p]));
|
1299 | }
|
1300 |
|
1301 | var original = p,
|
1302 | seenLinks = {},
|
1303 | knownHard = {};
|
1304 |
|
1305 |
|
1306 | var pos;
|
1307 |
|
1308 | var current;
|
1309 |
|
1310 | var base;
|
1311 |
|
1312 | var previous;
|
1313 |
|
1314 | start();
|
1315 |
|
1316 | function start() {
|
1317 |
|
1318 | var m = splitRootRe.exec(p);
|
1319 | pos = m[0].length;
|
1320 | current = m[0];
|
1321 | base = m[0];
|
1322 | previous = '';
|
1323 |
|
1324 |
|
1325 | if (isWindows && !knownHard[base]) {
|
1326 | fs.lstat(base, function(err) {
|
1327 | if (err) return cb(err);
|
1328 | knownHard[base] = true;
|
1329 | LOOP();
|
1330 | });
|
1331 | } else {
|
1332 | process.nextTick(LOOP);
|
1333 | }
|
1334 | }
|
1335 |
|
1336 |
|
1337 |
|
1338 | function LOOP() {
|
1339 |
|
1340 | if (pos >= p.length) {
|
1341 | if (cache) cache[original] = p;
|
1342 | return cb(null, p);
|
1343 | }
|
1344 |
|
1345 |
|
1346 | nextPartRe.lastIndex = pos;
|
1347 | var result = nextPartRe.exec(p);
|
1348 | previous = current;
|
1349 | current += result[0];
|
1350 | base = previous + result[1];
|
1351 | pos = nextPartRe.lastIndex;
|
1352 |
|
1353 |
|
1354 | if (knownHard[base] || (cache && cache[base] === base)) {
|
1355 | return process.nextTick(LOOP);
|
1356 | }
|
1357 |
|
1358 | if (cache && Object.prototype.hasOwnProperty.call(cache, base)) {
|
1359 |
|
1360 | return gotResolvedLink(cache[base]);
|
1361 | }
|
1362 |
|
1363 | return fs.lstat(base, gotStat);
|
1364 | }
|
1365 |
|
1366 | function gotStat(err, stat) {
|
1367 | if (err) return cb(err);
|
1368 |
|
1369 |
|
1370 | if (!stat.isSymbolicLink()) {
|
1371 | knownHard[base] = true;
|
1372 | if (cache) cache[base] = base;
|
1373 | return process.nextTick(LOOP);
|
1374 | }
|
1375 |
|
1376 |
|
1377 |
|
1378 |
|
1379 | if (!isWindows) {
|
1380 | var id = stat.dev.toString(32) + ':' + stat.ino.toString(32);
|
1381 | if (seenLinks.hasOwnProperty(id)) {
|
1382 | return gotTarget(null, seenLinks[id], base);
|
1383 | }
|
1384 | }
|
1385 | fs.stat(base, function(err) {
|
1386 | if (err) return cb(err);
|
1387 |
|
1388 | fs.readlink(base, function(err, target) {
|
1389 | if (!isWindows) seenLinks[id] = target;
|
1390 | gotTarget(err, target);
|
1391 | });
|
1392 | });
|
1393 | }
|
1394 |
|
1395 | function gotTarget(err, target, base) {
|
1396 | if (err) return cb(err);
|
1397 |
|
1398 | var resolvedLink = pathModule.resolve(previous, target);
|
1399 | if (cache) cache[base] = resolvedLink;
|
1400 | gotResolvedLink(resolvedLink);
|
1401 | }
|
1402 |
|
1403 | function gotResolvedLink(resolvedLink) {
|
1404 |
|
1405 | p = pathModule.resolve(resolvedLink, p.slice(pos));
|
1406 | start();
|
1407 | }
|
1408 | };
|
1409 |
|
1410 |
|
1411 |
|
1412 | var pool;
|
1413 |
|
1414 | function allocNewPool(poolSize) {
|
1415 | pool = new Buffer(poolSize);
|
1416 | pool.used = 0;
|
1417 | }
|
1418 |
|
1419 |
|
1420 |
|
1421 | fs.createReadStream = function(path, options) {
|
1422 | return new ReadStream(path, options);
|
1423 | };
|
1424 |
|
1425 | util.inherits(ReadStream, Readable);
|
1426 | fs.ReadStream = ReadStream;
|
1427 |
|
1428 | function ReadStream(path, options) {
|
1429 | if (!(this instanceof ReadStream))
|
1430 | return new ReadStream(path, options);
|
1431 |
|
1432 |
|
1433 | options = util._extend({
|
1434 | highWaterMark: 64 * 1024
|
1435 | }, options || {});
|
1436 |
|
1437 | Readable.call(this, options);
|
1438 |
|
1439 | this.path = path;
|
1440 | this.fd = options.hasOwnProperty('fd') ? options.fd : null;
|
1441 | this.flags = options.hasOwnProperty('flags') ? options.flags : 'r';
|
1442 | this.mode = options.hasOwnProperty('mode') ? options.mode : 438;
|
1443 |
|
1444 | this.start = options.hasOwnProperty('start') ? options.start : undefined;
|
1445 | this.end = options.hasOwnProperty('end') ? options.end : undefined;
|
1446 | this.autoClose = options.hasOwnProperty('autoClose') ?
|
1447 | options.autoClose : true;
|
1448 | this.pos = undefined;
|
1449 |
|
1450 | if (this.start !== undefined) {
|
1451 | if ('number' !== typeof this.start) {
|
1452 | throw TypeError('start must be a Number');
|
1453 | }
|
1454 | if (this.end === undefined) {
|
1455 | this.end = Infinity;
|
1456 | } else if ('number' !== typeof this.end) {
|
1457 | throw TypeError('end must be a Number');
|
1458 | }
|
1459 |
|
1460 | if (this.start > this.end) {
|
1461 | throw new Error('start must be <= end');
|
1462 | }
|
1463 |
|
1464 | this.pos = this.start;
|
1465 | }
|
1466 |
|
1467 | if (typeof this.fd !== 'number')
|
1468 | this.open();
|
1469 |
|
1470 | this.on('end', function() {
|
1471 | if (this.autoClose) {
|
1472 | this.destroy();
|
1473 | }
|
1474 | });
|
1475 | }
|
1476 |
|
1477 | fs.FileReadStream = fs.ReadStream;
|
1478 |
|
1479 | ReadStream.prototype.open = function() {
|
1480 | var self = this;
|
1481 | fs.open(this.path, this.flags, this.mode, function(er, fd) {
|
1482 | if (er) {
|
1483 | if (this.autoClose) {
|
1484 | self.destroy();
|
1485 | }
|
1486 | self.emit('error', er);
|
1487 | return;
|
1488 | }
|
1489 |
|
1490 | self.fd = fd;
|
1491 | self.emit('open', fd);
|
1492 |
|
1493 | self.read();
|
1494 | });
|
1495 | };
|
1496 |
|
1497 | ReadStream.prototype._read = function(n) {
|
1498 | if (typeof this.fd !== 'number')
|
1499 | return this.once('open', function() {
|
1500 | this._read(n);
|
1501 | });
|
1502 |
|
1503 | if (this.destroyed)
|
1504 | return;
|
1505 |
|
1506 | if (!pool || pool.length - pool.used < kMinPoolSpace) {
|
1507 |
|
1508 | pool = null;
|
1509 | allocNewPool(this._readableState.highWaterMark);
|
1510 | }
|
1511 |
|
1512 |
|
1513 |
|
1514 |
|
1515 | var thisPool = pool;
|
1516 | var toRead = Math.min(pool.length - pool.used, n);
|
1517 | var start = pool.used;
|
1518 |
|
1519 | if (this.pos !== undefined)
|
1520 | toRead = Math.min(this.end - this.pos + 1, toRead);
|
1521 |
|
1522 |
|
1523 |
|
1524 | if (toRead <= 0)
|
1525 | return this.push(null);
|
1526 |
|
1527 |
|
1528 | var self = this;
|
1529 | fs.read(this.fd, pool, pool.used, toRead, this.pos, onread);
|
1530 |
|
1531 |
|
1532 | if (this.pos !== undefined)
|
1533 | this.pos += toRead;
|
1534 | pool.used += toRead;
|
1535 |
|
1536 | function onread(er, bytesRead) {
|
1537 | if (er) {
|
1538 | if (self.autoClose) {
|
1539 | self.destroy();
|
1540 | }
|
1541 | self.emit('error', er);
|
1542 | } else {
|
1543 | var b = null;
|
1544 | if (bytesRead > 0)
|
1545 | b = thisPool.slice(start, start + bytesRead);
|
1546 |
|
1547 | self.push(b);
|
1548 | }
|
1549 | }
|
1550 | };
|
1551 |
|
1552 |
|
1553 | ReadStream.prototype.destroy = function() {
|
1554 | if (this.destroyed)
|
1555 | return;
|
1556 | this.destroyed = true;
|
1557 |
|
1558 | if ('number' === typeof this.fd)
|
1559 | this.close();
|
1560 | };
|
1561 |
|
1562 |
|
1563 | ReadStream.prototype.close = function(cb) {
|
1564 | var self = this;
|
1565 | if (cb)
|
1566 | this.once('close', cb);
|
1567 | if (this.closed || 'number' !== typeof this.fd) {
|
1568 | if ('number' !== typeof this.fd) {
|
1569 | this.once('open', close);
|
1570 | return;
|
1571 | }
|
1572 | return process.nextTick(this.emit.bind(this, 'close'));
|
1573 | }
|
1574 | this.closed = true;
|
1575 | close();
|
1576 |
|
1577 | function close(fd) {
|
1578 | fs.close(fd || self.fd, function(er) {
|
1579 | if (er)
|
1580 | self.emit('error', er);
|
1581 | else
|
1582 | self.emit('close');
|
1583 | });
|
1584 | self.fd = null;
|
1585 | }
|
1586 | };
|
1587 |
|
1588 |
|
1589 |
|
1590 |
|
1591 | fs.createWriteStream = function(path, options) {
|
1592 | return new WriteStream(path, options);
|
1593 | };
|
1594 |
|
1595 | util.inherits(WriteStream, Writable);
|
1596 | fs.WriteStream = WriteStream;
|
1597 | function WriteStream(path, options) {
|
1598 | if (!(this instanceof WriteStream))
|
1599 | return new WriteStream(path, options);
|
1600 |
|
1601 | options = options || {};
|
1602 |
|
1603 | Writable.call(this, options);
|
1604 |
|
1605 | this.path = path;
|
1606 | this.fd = null;
|
1607 |
|
1608 | this.fd = options.hasOwnProperty('fd') ? options.fd : null;
|
1609 | this.flags = options.hasOwnProperty('flags') ? options.flags : 'w';
|
1610 | this.mode = options.hasOwnProperty('mode') ? options.mode : 438;
|
1611 |
|
1612 | this.start = options.hasOwnProperty('start') ? options.start : undefined;
|
1613 | this.pos = undefined;
|
1614 | this.bytesWritten = 0;
|
1615 |
|
1616 | if (this.start !== undefined) {
|
1617 | if ('number' !== typeof this.start) {
|
1618 | throw TypeError('start must be a Number');
|
1619 | }
|
1620 | if (this.start < 0) {
|
1621 | throw new Error('start must be >= zero');
|
1622 | }
|
1623 |
|
1624 | this.pos = this.start;
|
1625 | }
|
1626 |
|
1627 | if ('number' !== typeof this.fd)
|
1628 | this.open();
|
1629 |
|
1630 |
|
1631 | this.once('finish', this.close);
|
1632 | }
|
1633 |
|
1634 | fs.FileWriteStream = fs.WriteStream;
|
1635 |
|
1636 |
|
1637 | WriteStream.prototype.open = function() {
|
1638 | fs.open(this.path, this.flags, this.mode, function(er, fd) {
|
1639 | if (er) {
|
1640 | this.destroy();
|
1641 | this.emit('error', er);
|
1642 | return;
|
1643 | }
|
1644 |
|
1645 | this.fd = fd;
|
1646 | this.emit('open', fd);
|
1647 | }.bind(this));
|
1648 | };
|
1649 |
|
1650 |
|
1651 | WriteStream.prototype._write = function(data, encoding, cb) {
|
1652 | if (!Buffer.isBuffer(data))
|
1653 | return this.emit('error', new Error('Invalid data'));
|
1654 |
|
1655 | if (typeof this.fd !== 'number')
|
1656 | return this.once('open', function() {
|
1657 | this._write(data, encoding, cb);
|
1658 | });
|
1659 |
|
1660 | var self = this;
|
1661 | fs.write(this.fd, data, 0, data.length, this.pos, function(er, bytes) {
|
1662 | if (er) {
|
1663 | self.destroy();
|
1664 | return cb(er);
|
1665 | }
|
1666 | self.bytesWritten += bytes;
|
1667 | cb();
|
1668 | });
|
1669 |
|
1670 | if (this.pos !== undefined)
|
1671 | this.pos += data.length;
|
1672 | };
|
1673 |
|
1674 |
|
1675 | WriteStream.prototype.destroy = ReadStream.prototype.destroy;
|
1676 | WriteStream.prototype.close = ReadStream.prototype.close;
|
1677 |
|
1678 |
|
1679 | WriteStream.prototype.destroySoon = WriteStream.prototype.end;
|
1680 |
|
1681 |
|
1682 |
|
1683 |
|
1684 | function SyncWriteStream(fd) {
|
1685 | Stream.call(this);
|
1686 |
|
1687 | this.fd = fd;
|
1688 | this.writable = true;
|
1689 | this.readable = false;
|
1690 | }
|
1691 |
|
1692 | util.inherits(SyncWriteStream, Stream);
|
1693 |
|
1694 |
|
1695 |
|
1696 | fs.SyncWriteStream = SyncWriteStream;
|
1697 |
|
1698 |
|
1699 | SyncWriteStream.prototype.write = function(data, arg1, arg2) {
|
1700 | var encoding, cb;
|
1701 |
|
1702 |
|
1703 | if (arg1) {
|
1704 | if (typeof arg1 === 'string') {
|
1705 | encoding = arg1;
|
1706 | cb = arg2;
|
1707 | } else if (typeof arg1 === 'function') {
|
1708 | cb = arg1;
|
1709 | } else {
|
1710 | throw new Error('bad arg');
|
1711 | }
|
1712 | }
|
1713 | assertEncoding(encoding);
|
1714 |
|
1715 |
|
1716 | if (typeof data == 'string') {
|
1717 | data = new Buffer(data, encoding);
|
1718 | }
|
1719 |
|
1720 | fs.writeSync(this.fd, data, 0, data.length);
|
1721 |
|
1722 | if (cb) {
|
1723 | process.nextTick(cb);
|
1724 | }
|
1725 |
|
1726 | return true;
|
1727 | };
|
1728 |
|
1729 |
|
1730 | SyncWriteStream.prototype.end = function(data, arg1, arg2) {
|
1731 | if (data) {
|
1732 | this.write(data, arg1, arg2);
|
1733 | }
|
1734 | this.destroy();
|
1735 | };
|
1736 |
|
1737 |
|
1738 | SyncWriteStream.prototype.destroy = function() {
|
1739 | fs.closeSync(this.fd);
|
1740 | this.fd = null;
|
1741 | this.emit('close');
|
1742 | return true;
|
1743 | };
|
1744 |
|
1745 | SyncWriteStream.prototype.destroySoon = SyncWriteStream.prototype.destroy;
|