Add 'fstream' as a dependency.

node_modules/fstream/examples/deep-copy/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()
+  }
+}