file: make file.createReadStream work on zero-length file

1 files changed, 15 insertions, 6 deletions

diff --git a/lib/file.js b/lib/file.js
index 44e8c6b..5149047 100644
--- a/lib/file.js
+++ b/lib/file.js
@@ -7,6 +7,7 @@ var FileStream = require('./file-stream')
 var inherits = require('inherits')
 var mime = require('./mime.json')
 var path = require('path')
+var stream = require('stream')
 
 inherits(File, EventEmitter)
 
@@ -67,14 +68,22 @@ File.prototype.deselect = function () {
  */
 File.prototype.createReadStream = function (opts) {
   var self = this
-  var stream = new FileStream(self, opts)
-  self._torrent.select(stream._startPiece, stream._endPiece, true, function () {
-    stream._notify()
+  if (this.length === 0) {
+    var empty = new stream.PassThrough()
+    process.nextTick(function () {
+      empty.end()
+    })
+    return empty
+  }
+
+  var fileStream = new FileStream(self, opts)
+  self._torrent.select(fileStream._startPiece, fileStream._endPiece, true, function () {
+    fileStream._notify()
   })
-  eos(stream, function () {
-    self._torrent.deselect(stream._startPiece, stream._endPiece, true)
+  eos(fileStream, function () {
+    self._torrent.deselect(fileStream._startPiece, fileStream._endPiece, true)
   })
-  return stream
+  return fileStream
 }
 
 /**