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Diffstat (limited to 'node_modules/fstream/lib/reader.js')
| -rw-r--r-- | node_modules/fstream/lib/reader.js | 255 |
1 files changed, 0 insertions, 255 deletions
diff --git a/node_modules/fstream/lib/reader.js b/node_modules/fstream/lib/reader.js deleted file mode 100644 index be4f570..0000000 --- a/node_modules/fstream/lib/reader.js +++ /dev/null @@ -1,255 +0,0 @@ -module.exports = Reader - -var fs = require('graceful-fs') -var Stream = require('stream').Stream -var inherits = require('inherits') -var path = require('path') -var getType = require('./get-type.js') -var hardLinks = Reader.hardLinks = {} -var Abstract = require('./abstract.js') - -// Must do this *before* loading the child classes -inherits(Reader, Abstract) - -var LinkReader = require('./link-reader.js') - -function Reader (props, currentStat) { - var self = this - if (!(self instanceof Reader)) return new Reader(props, currentStat) - - if (typeof props === 'string') { - props = { path: props } - } - - // polymorphism. - // call fstream.Reader(dir) to get a DirReader object, etc. - // Note that, unlike in the Writer case, ProxyReader is going - // to be the *normal* state of affairs, since we rarely know - // the type of a file prior to reading it. - - var type - var ClassType - - if (props.type && typeof props.type === 'function') { - type = props.type - ClassType = type - } else { - type = getType(props) - ClassType = Reader - } - - if (currentStat && !type) { - type = getType(currentStat) - props[type] = true - props.type = type - } - - switch (type) { - case 'Directory': - ClassType = require('./dir-reader.js') - break - - case 'Link': - // XXX hard links are just files. - // However, it would be good to keep track of files' dev+inode - // and nlink values, and create a HardLinkReader that emits - // a linkpath value of the original copy, so that the tar - // writer can preserve them. - // ClassType = HardLinkReader - // break - - case 'File': - ClassType = require('./file-reader.js') - break - - case 'SymbolicLink': - ClassType = LinkReader - break - - case 'Socket': - ClassType = require('./socket-reader.js') - break - - case null: - ClassType = require('./proxy-reader.js') - break - } - - if (!(self instanceof ClassType)) { - return new ClassType(props) - } - - Abstract.call(self) - - if (!props.path) { - self.error('Must provide a path', null, true) - } - - self.readable = true - self.writable = false - - self.type = type - self.props = props - self.depth = props.depth = props.depth || 0 - self.parent = props.parent || null - self.root = props.root || (props.parent && props.parent.root) || self - - self._path = self.path = path.resolve(props.path) - if (process.platform === 'win32') { - self.path = self._path = self.path.replace(/\?/g, '_') - if (self._path.length >= 260) { - // how DOES one create files on the moon? - // if the path has spaces in it, then UNC will fail. - self._swallowErrors = true - // if (self._path.indexOf(" ") === -1) { - self._path = '\\\\?\\' + self.path.replace(/\//g, '\\') - // } - } - } - self.basename = props.basename = path.basename(self.path) - self.dirname = props.dirname = path.dirname(self.path) - - // these have served their purpose, and are now just noisy clutter - props.parent = props.root = null - - // console.error("\n\n\n%s setting size to", props.path, props.size) - self.size = props.size - self.filter = typeof props.filter === 'function' ? props.filter : null - if (props.sort === 'alpha') props.sort = alphasort - - // start the ball rolling. - // this will stat the thing, and then call self._read() - // to start reading whatever it is. - // console.error("calling stat", props.path, currentStat) - self._stat(currentStat) -} - -function alphasort (a, b) { - return a === b ? 0 - : a.toLowerCase() > b.toLowerCase() ? 1 - : a.toLowerCase() < b.toLowerCase() ? -1 - : a > b ? 1 - : -1 -} - -Reader.prototype._stat = function (currentStat) { - var self = this - var props = self.props - var stat = props.follow ? 'stat' : 'lstat' - // console.error("Reader._stat", self._path, currentStat) - if (currentStat) process.nextTick(statCb.bind(null, null, currentStat)) - else fs[stat](self._path, statCb) - - function statCb (er, props_) { - // console.error("Reader._stat, statCb", self._path, props_, props_.nlink) - if (er) return self.error(er) - - Object.keys(props_).forEach(function (k) { - props[k] = props_[k] - }) - - // if it's not the expected size, then abort here. - if (undefined !== self.size && props.size !== self.size) { - return self.error('incorrect size') - } - self.size = props.size - - var type = getType(props) - var handleHardlinks = props.hardlinks !== false - - // special little thing for handling hardlinks. - if (handleHardlinks && type !== 'Directory' && props.nlink && props.nlink > 1) { - var k = props.dev + ':' + props.ino - // console.error("Reader has nlink", self._path, k) - if (hardLinks[k] === self._path || !hardLinks[k]) { - hardLinks[k] = self._path - } else { - // switch into hardlink mode. - type = self.type = self.props.type = 'Link' - self.Link = self.props.Link = true - self.linkpath = self.props.linkpath = hardLinks[k] - // console.error("Hardlink detected, switching mode", self._path, self.linkpath) - // Setting __proto__ would arguably be the "correct" - // approach here, but that just seems too wrong. - self._stat = self._read = LinkReader.prototype._read - } - } - - if (self.type && self.type !== type) { - self.error('Unexpected type: ' + type) - } - - // if the filter doesn't pass, then just skip over this one. - // still have to emit end so that dir-walking can move on. - if (self.filter) { - var who = self._proxy || self - // special handling for ProxyReaders - if (!self.filter.call(who, who, props)) { - if (!self._disowned) { - self.abort() - self.emit('end') - self.emit('close') - } - return - } - } - - // last chance to abort or disown before the flow starts! - var events = ['_stat', 'stat', 'ready'] - var e = 0 - ;(function go () { - if (self._aborted) { - self.emit('end') - self.emit('close') - return - } - - if (self._paused && self.type !== 'Directory') { - self.once('resume', go) - return - } - - var ev = events[e++] - if (!ev) { - return self._read() - } - self.emit(ev, props) - go() - })() - } -} - -Reader.prototype.pipe = function (dest) { - var self = this - if (typeof dest.add === 'function') { - // piping to a multi-compatible, and we've got directory entries. - self.on('entry', function (entry) { - var ret = dest.add(entry) - if (ret === false) { - self.pause() - } - }) - } - - // console.error("R Pipe apply Stream Pipe") - return Stream.prototype.pipe.apply(this, arguments) -} - -Reader.prototype.pause = function (who) { - this._paused = true - who = who || this - this.emit('pause', who) - if (this._stream) this._stream.pause(who) -} - -Reader.prototype.resume = function (who) { - this._paused = false - who = who || this - this.emit('resume', who) - if (this._stream) this._stream.resume(who) - this._read() -} - -Reader.prototype._read = function () { - this.error('Cannot read unknown type: ' + this.type) -} |