Implement uploading blobs in composer

1 files changed, 17 insertions, 0 deletions

diff --git a/lib/util.js b/lib/util.js
index d6c3133..fe7a335 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -78,3 +78,20 @@ u.renderError = function(err) {
     h('h3', err.name),
     h('pre', err.stack))
 }
+
+u.pullLength = function (cb) {
+  var len = 0
+  return pull.through(function (data) {
+    len += data.length
+  }, function (err) {
+    cb(err, len)
+  })
+}
+
+u.tryDecodeJSON = function (json) {
+  try {
+    return JSON.parse(json)
+  } catch(e) {
+    return null
+  }
+}