Added the repository.createLightweightTag

mattyclarkson · John Haley · commit 1a3b1fa1373a · 2015-02-27T14:22:12.000-07:00
This is a simple function that can create a new lightweight tag in a
repository. The same can be acheived by creating a new reference in
`/refs/tags/` but this performs libgit2 validation of tag names.

```
return repository.createLightweightTag(oid, 'foobar')
  .then(function(tag) {
    // The new tag is returned
  });
```
diff --git a/lib/repository.js b/lib/repository.js
@@ -292,6 +292,27 @@ Repository.prototype.createTag = function(oid, name, message, callback) {
     });
 };
 
+/**
+ * Creates a new lightweight tag
+ *
+ * @async
+ * @param {String|Oid} String sha or Oid
+ * @param {String} name the name of the tag
+ * @return {Reference}
+ */
+Repository.prototype.createLightweightTag = function(oid, name, callback) {
+  var repository = this;
+
+  return Commit.lookup(repository, oid)
+    .then(function(commit) {
+      // Final argument is `force` which overwrites any previous tag
+      return Tag.createLightweight(repository, name, commit, 0);
+    })
+    .then(function() {
+      return Reference.lookup(repository, "refs/tags/" + name);
+    });
+};
+
 /**
  * Retrieve the tag represented by the oid.
  *
