1 files changed, 66 insertions, 0 deletions
diff --git a/deps/npm/lib/pack.js b/deps/npm/lib/pack.js
new file mode 100644
index 0000000000..3475c4a3ef
--- /dev/null
+++ b/deps/npm/lib/pack.js
@@ -0,0 +1,66 @@
+// npm pack <pkg>
+// Packs the specified package into a .tgz file, which can then
+// be installed.
+
+module.exports = pack
+
+var npm = require("./npm.js")
+  , install = require("./install.js")
+  , cache = require("./cache.js")
+  , output = require("./utils/output.js")
+  , fs = require("graceful-fs")
+  , chain = require("slide").chain
+  , path = require("path")
+  , relativize = require("./utils/relativize.js")
+  , cwd = process.cwd()
+
+pack.usage = "npm pack <pkg>"
+
+// if it can be installed, it can be packed.
+pack.completion = install.completion
+
+function pack (args, silent, cb) {
+  if (typeof cb !== "function") cb = silent, silent = false
+
+  if (args.length === 0) args = ["."]
+
+  chain(args.map(function (arg) { return function (cb) {
+    pack_(arg, cb)
+  }}), function (er, files) {
+    if (er || silent) return cb(er, files)
+    printFiles(files, cb)
+  })
+}
+
+function printFiles (files, cb) {
+  files = files.map(function (file) {
+    return relativize(file, cwd)
+  })
+  output.write(files.join("\n"), cb)
+}
+
+// add to cache, then cp to the cwd
+function pack_ (pkg, cb) {
+  cache.add(pkg, function (er, data) {
+    if (er) return cb(er)
+    var fname = path.resolve(data._id.replace(/@/g, "-") + ".tgz")
+      , cached = path.resolve( npm.cache
+                             , data.name
+                             , data.version
+                             , "package.tgz" )
+      , from = fs.createReadStream(cached)
+      , to = fs.createWriteStream(fname)
+      , errState = null
+
+    from.on("error", cb_)
+    to.on("error", cb_)
+    to.on("close", cb_)
+    from.pipe(to)
+
+    function cb_ (er) {
+      if (errState) return
+      if (er) return cb(errState = er)
+      cb(null, fname)
+    }
+  })
+}