diff options
Diffstat (limited to 'deps/npm/node_modules/fstream/lib/dir-writer.js')
-rw-r--r-- | deps/npm/node_modules/fstream/lib/dir-writer.js | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/deps/npm/node_modules/fstream/lib/dir-writer.js b/deps/npm/node_modules/fstream/lib/dir-writer.js new file mode 100644 index 0000000000..01920244c1 --- /dev/null +++ b/deps/npm/node_modules/fstream/lib/dir-writer.js @@ -0,0 +1,165 @@ +// It is expected that, when .add() returns false, the consumer +// of the DirWriter will pause until a "drain" event occurs. Note +// that this is *almost always going to be the case*, unless the +// thing being written is some sort of unsupported type, and thus +// skipped over. + +module.exports = DirWriter + +var fs = require("graceful-fs") + , fstream = require("../fstream.js") + , Writer = require("./writer.js") + , inherits = require("inherits") + , mkdir = require("mkdirp") + , path = require("path") + , collect = require("./collect.js") + +inherits(DirWriter, Writer) + +function DirWriter (props) { + var me = this + if (!(me instanceof DirWriter)) me.error( + "DirWriter must be called as constructor.", null, true) + + // should already be established as a Directory type + if (props.type !== "Directory" || !props.Directory) { + me.error("Non-directory type "+ props.type + " " + + JSON.stringify(props), null, true) + } + + Writer.call(this, props) +} + +DirWriter.prototype._create = function () { + var me = this + mkdir(me._path, Writer.dirmode, function (er) { + if (er) return me.error(er) + // ready to start getting entries! + me.ready = true + me.emit("ready") + }) +} + +// a DirWriter has an add(entry) method, but its .write() doesn't +// do anything. Why a no-op rather than a throw? Because this +// leaves open the door for writing directory metadata for +// gnu/solaris style dumpdirs. +DirWriter.prototype.write = function () { + return true +} + +DirWriter.prototype.end = function () { + this._ended = true + this._process() +} + +DirWriter.prototype.add = function (entry) { + var me = this + + // console.error("\tadd", entry._path, "->", me._path) + collect(entry) + if (!me.ready || me._currentEntry) { + me._buffer.push(entry) + return false + } + + // create a new writer, and pipe the incoming entry into it. + if (me._ended) { + return me.error("add after end") + } + + me._buffer.push(entry) + me._process() + + return 0 === this._buffer.length +} + +DirWriter.prototype._process = function () { + var me = this + + // console.error("DW Process p=%j", me._processing, me.basename) + + if (me._processing) return + + var entry = me._buffer.shift() + if (!entry) { + // console.error("DW Drain") + me.emit("drain") + if (me._ended) me._finish() + return + } + + me._processing = true + // console.error("DW Entry", entry._path) + + me.emit("entry", entry) + + // ok, add this entry + // + // don't allow recursive copying + var p = entry + do { + if (p._path === me.root._path || p._path === me._path) { + // console.error("DW Exit (recursive)", entry.basename, me._path) + me._processing = false + if (entry._collected) entry.pipe() + return me._process() + } + } while (p = p.parent) + + // console.error("DW not recursive") + + // chop off the entry's root dir, replace with ours + var props = { parent: me + , root: me.root || me + , type: entry.type + , depth: me.depth + 1 } + + var p = entry._path || entry.path || entry.props.path + if (entry.parent) { + p = p.substr(entry.parent._path.length + 1) + } + // get rid of any ../../ shenanigans + props.path = path.join(me.path, path.join("/", p)) + + // all the rest of the stuff, copy over from the source. + Object.keys(entry.props).forEach(function (k) { + if (!props.hasOwnProperty(k)) { + props[k] = entry.props[k] + } + }) + + // not sure at this point what kind of writer this is. + var child = me._currentChild = new Writer(props) + child.on("ready", function () { + // console.error("DW Child Ready", child.type, child._path) + // console.error(" resuming", entry._path) + entry.pipe(child) + entry.resume() + }) + + // XXX Make this work in node. + // Long filenames should not break stuff. + child.on("error", function (er) { + if (child._swallowErrors) { + me.warn(er) + child.emit("end") + child.emit("close") + } else { + me.emit("error", er) + } + }) + + // we fire _end internally *after* end, so that we don't move on + // until any "end" listeners have had their chance to do stuff. + child.on("close", onend) + var ended = false + function onend () { + if (ended) return + ended = true + // console.error("* DW Child end", child.basename) + me._currentChild = null + me._processing = false + me._process() + } +} |