Merge pull request #42 from PeterDaveHello/add_git_pull_support

add git pull basic support

README.md

@@ -42,6 +42,15 @@ Clone a repository:
       repo = _repo
       # => #<Repo>
 
+Pull a repository:
+
+    git = require 'gift'
+
+    git.pull "remote", "branch", "path/to/local/pull/repo", (err, _repo) ->
+      repo = _repo
+      # => #<Repo>
+
+
 ## Repo
 ### `Repo#path`
 `String` - The path to the repository.

src/index.coffee

@@ -46,3 +46,25 @@ Git.clone = (repository, path, depth = 0, callback) ->
   exec bash, (err, stdout, stderr) ->
     return callback err if err
     return callback err, (new Repo path, false, { maxBuffer: Git.maxBuffer })
+
+# Public: Pull a git repository.
+#
+# remote     - The remote to pull from.
+# branch     - The branch to pull from.
+# path       - The directory to pull into.
+# callback   - Receives `(err, repo)`.
+#
+Git.pull = (remote = '', branch = '', path = '', callback) ->
+  if (remote == '' || branch == '')
+    if (path == '')
+      bash = "git pull"
+    else
+      bash = "git -C #{path} pull"
+  else
+    if (path == '')
+      bash = "git pull #{remote} #{branch}"
+    else
+      bash = "git -C #{path} pull #{remote} #{branch}"
+  exec bash, (err, stdout, stderr) ->
+    return callback err if err
+    return callback err, (new Repo path)

test/index.test.coffee

@@ -72,3 +72,18 @@ describe "git", ->
         done()
     after (done) ->
       exec "rm -rf #{newRepositoryDir}", done
+
+  describe "pull()", ->
+    @timeout 30000
+    repo = null
+    RepositoryDir = "#{__dirname}/fixtures/clone"
+    before (done) ->
+      git.clone "https://github.com/notatestuser/gift.git", RepositoryDir, (err, _repo) ->
+      git.pull '', '', RepositoryDir, (err, _repo) ->
+        repo = _repo
+        done err
+    it "pull a repository", (done) ->
+      repo.should.be.an.instanceof Repo
+      done()
+    after (done) ->
+      exec "rm -rf #{RepositoryDir}", done