Add 'fstream' as a dependency.

node_modules/fstream/examples/pipe.js

@@ -0,0 +1,115 @@
+var fstream = require("../fstream.js")
+var path = require("path")
+
+var r = fstream.Reader({ path: path.dirname(__dirname)
+                       , filter: function () {
+                           return !this.basename.match(/^\./) &&
+                                  !this.basename.match(/^node_modules$/)
+                                  !this.basename.match(/^deep-copy$/)
+                         }
+                       })
+
+var w = fstream.Writer({ path: path.resolve(__dirname, "deep-copy")
+                       , type: "Directory"
+                       })
+
+var indent = ""
+var escape = {}
+
+r.on("entry", appears)
+r.on("ready", function () {
+  console.error("ready to begin!", r.path)
+})
+
+function appears (entry) {
+  console.error(indent + "a %s appears!", entry.type, entry.basename, typeof entry.basename, entry)
+  if (foggy) {
+    console.error("FOGGY!")
+    var p = entry
+    do {
+      console.error(p.depth, p.path, p._paused)
+    } while (p = p.parent)
+
+    throw new Error("\033[mshould not have entries while foggy")
+  }
+  indent += "\t"
+  entry.on("data", missile(entry))
+  entry.on("end", runaway(entry))
+  entry.on("entry", appears)
+}
+
+var foggy
+function missile (entry) {
+  if (entry.type === "Directory") {
+    var ended = false
+    entry.once("end", function () { ended = true })
+    return function (c) {
+      // throw in some pathological pause()/resume() behavior
+      // just for extra fun.
+      process.nextTick(function () {
+        if (!foggy && !ended) { // && Math.random() < 0.3) {
+          console.error(indent +"%s casts a spell", entry.basename)
+          console.error("\na slowing fog comes over the battlefield...\n\033[32m")
+          entry.pause()
+          entry.once("resume", liftFog)
+          foggy = setTimeout(liftFog, 10)
+
+          function liftFog (who) {
+            if (!foggy) return
+            if (who) {
+              console.error("%s breaks the spell!", who && who.path)
+            } else {
+              console.error("the spell expires!")
+            }
+            console.error("\033[mthe fog lifts!\n")
+            clearTimeout(foggy)
+            foggy = null
+            if (entry._paused) entry.resume()
+          }
+
+        }
+      })
+    }
+  }
+
+  return function (c) {
+    var e = Math.random() < 0.5
+    console.error(indent + "%s %s for %d damage!",
+                entry.basename,
+                e ? "is struck" : "fires a chunk",
+                c.length)
+  }
+}
+
+function runaway (entry) { return function () {
+  var e = Math.random() < 0.5
+  console.error(indent + "%s %s",
+                entry.basename,
+                e ? "turns to flee" : "is vanquished!")
+  indent = indent.slice(0, -1)
+}}
+
+
+w.on("entry", attacks)
+//w.on("ready", function () { attacks(w) })
+function attacks (entry) {
+  console.error(indent + "%s %s!", entry.basename,
+              entry.type === "Directory" ? "calls for backup" : "attacks")
+  entry.on("entry", attacks)
+}
+
+ended = false
+r.on("end", function () {
+  if (foggy) clearTimeout(foggy)
+  console.error("\033[mIT'S OVER!!")
+  console.error("A WINNAR IS YOU!")
+
+  console.log("ok 1 A WINNAR IS YOU")
+  ended = true
+})
+
+process.on("exit", function () {
+  console.log((ended ? "" : "not ") + "ok 2 ended")
+})
+
+r.pipe(w)