1 files changed, 54 insertions, 0 deletions
diff --git a/deps/npm/node_modules/fstream/lib/link-reader.js b/deps/npm/node_modules/fstream/lib/link-reader.js
new file mode 100644
index 0000000000..7e7ab6ce5c
--- /dev/null
+++ b/deps/npm/node_modules/fstream/lib/link-reader.js
@@ -0,0 +1,54 @@
+// Basically just a wrapper around an fs.readlink
+//
+// XXX: Enhance this to support the Link type, by keeping
+// a lookup table of {<dev+inode>:<path>}, so that hardlinks
+// can be preserved in tarballs.
+
+module.exports = LinkReader
+
+var fs = require("graceful-fs")
+  , fstream = require("../fstream.js")
+  , inherits = require("inherits")
+  , mkdir = require("mkdirp")
+  , Reader = require("./reader.js")
+
+inherits(LinkReader, Reader)
+
+function LinkReader (props) {
+  var me = this
+  if (!(me instanceof LinkReader)) throw new Error(
+    "LinkReader must be called as constructor.")
+
+  if (!((props.type === "Link" && props.Link) ||
+        (props.type === "SymbolicLink" && props.SymbolicLink))) {
+    throw new Error("Non-link type "+ props.type)
+  }
+
+  Reader.call(me, props)
+}
+
+// When piping a LinkReader into a LinkWriter, we have to
+// already have the linkpath property set, so that has to
+// happen *before* the "ready" event, which means we need to
+// override the _stat method.
+LinkReader.prototype._stat = function (currentStat) {
+  var me = this
+  fs.readlink(me._path, function (er, linkpath) {
+    if (er) return me.error(er)
+    me.linkpath = me.props.linkpath = linkpath
+    me.emit("linkpath", linkpath)
+    Reader.prototype._stat.call(me, currentStat)
+  })
+}
+
+LinkReader.prototype._read = function () {
+  var me = this
+  if (me._paused) return
+  // basically just a no-op, since we got all the info we need
+  // from the _stat method
+  if (!me._ended) {
+    me.emit("end")
+    me.emit("close")
+    me._ended = true
+  }
+}