add a path parameter to most commit methods

The path parameter allows you to specify a path to constrain queries by.  This changes potentially breaks backwards compatibility for the Repo.commits and Repo.commits_since methods as it moves the positional arguments.
(cherry picked from commit cc8a20e78da4864060bd0c9279633009bc10d871)

Author: Paul Sowden

lib/git/commit.py

@@ -82,7 +82,7 @@ def id_abbrev(self):
         return self.id[0:7]
 
     @classmethod
-    def count(cls, repo, ref):
+    def count(cls, repo, ref, path=''):
         """
         Count the number of commits reachable from this ref
 
@@ -92,13 +92,16 @@ def count(cls, repo, ref):
         ``ref``
             is the ref from which to begin (SHA1 or name)
 
+        ``path``
+            is an optinal path
+
         Returns
             int
         """
-        return len(repo.git.rev_list(ref, '--').strip().splitlines())
+        return len(repo.git.rev_list(ref, '--', path).strip().splitlines())
 
     @classmethod
-    def find_all(cls, repo, ref, **kwargs):
+    def find_all(cls, repo, ref, path='', **kwargs):
         """
         Find all commits matching the given criteria.
         ``repo``
@@ -107,6 +110,9 @@ def find_all(cls, repo, ref, **kwargs):
         ``ref``
             is the ref from which to begin (SHA1 or name)
 
+        ``path``
+            is an optinal path
+
         ``options``
             is a Hash of optional arguments to git where
             ``max_count`` is the maximum number of commits to fetch
@@ -118,7 +124,7 @@ def find_all(cls, repo, ref, **kwargs):
         options = {'pretty': 'raw'}
         options.update(kwargs)
 
-        output = repo.git.rev_list(ref, '--', **options)
+        output = repo.git.rev_list(ref, '--', path, **options)
         return cls.list_from_string(repo, output)
 
     @classmethod

lib/git/repo.py

@@ -100,13 +100,16 @@ def tags(self):
         """
         return Tag.find_all(self)
 
-    def commits(self, start = 'master', max_count = 10, skip = 0):
+    def commits(self, start = 'master', path = '', max_count = 10, skip = 0):
         """
         A list of Commit objects representing the history of a given ref/commit
 
         ``start``
             is the branch/commit name (default 'master')
 
+         ``path``
+            is an optional path
+
          ``max_count``
             is the maximum number of commits to return (default 10)
 
@@ -119,9 +122,9 @@ def commits(self, start = 'master', max_count = 10, skip = 0):
         options = {'max_count': max_count,
                    'skip': skip}
 
-        return Commit.find_all(self, start, **options)
+        return Commit.find_all(self, start, path, **options)
 
-    def commits_between(self, frm, to):
+    def commits_between(self, frm, to, path = ''):
         """
         The Commits objects that are reachable via ``to`` but not via ``frm``
         Commits are returned in chronological order.
@@ -132,19 +135,25 @@ def commits_between(self, frm, to):
         ``to``
             is the branch/commit name of the older item
 
+        ``path``
+            is an optinal path
+
         Returns
             ``git.Commit[]``
         """
-        return Commit.find_all(self, "%s..%s" % (frm, to)).reverse()
+        return Commit.find_all(self, "%s..%s" % (frm, to), path).reverse()
 
-    def commits_since(self, start = 'master', since = '1970-01-01'):
+    def commits_since(self, start = 'master', path = '', since = '1970-01-01'):
         """
         The Commits objects that are newer than the specified date.
         Commits are returned in chronological order.
 
         ``start``
             is the branch/commit name (default 'master')
 
+        ``path``
+            is an optinal path
+
         ``since``
             is a string represeting a date/time
 
@@ -153,33 +162,39 @@ def commits_since(self, start = 'master', since = '1970-01-01'):
         """
         options = {'since': since}
 
-        return Commit.find_all(self, start, **options)
+        return Commit.find_all(self, start, path, **options)
 
-    def commit_count(self, start = 'master'):
+    def commit_count(self, start = 'master', path = ''):
         """
         The number of commits reachable by the given branch/commit
 
         ``start``
             is the branch/commit name (default 'master')
 
+        ``path``
+            is an optinal path
+
         Returns
             int
         """
-        return Commit.count(self, start)
+        return Commit.count(self, start, path)
 
-    def commit(self, id):
+    def commit(self, id, path = ''):
         """
         The Commit object for the specified id
 
         ``id``
             is the SHA1 identifier of the commit
 
+        ``path``
+            is an optinal path
+
         Returns
             git.Commit
         """
         options = {'max_count': 1}
 
-        commits = Commit.find_all(self, id, **options)
+        commits = Commit.find_all(self, id, path, **options)
 
         if not commits:
             raise ValueError, 'Invalid identifier %s' % id

test/git/test_commit.py

@@ -22,7 +22,7 @@ def test_bake(self, git):
         assert_equal("tom@mojombo.com", commit.author.email)
 
         assert_true(git.called)
-        assert_equal(git.call_args, (('rev_list', '4c8124ffcf4039d292442eeccabdeca5af5c5017', '--'), {'pretty': 'raw', 'max_count': 1}))
+        assert_equal(git.call_args, (('rev_list', '4c8124ffcf4039d292442eeccabdeca5af5c5017', '--', ''), {'pretty': 'raw', 'max_count': 1}))
 
     @patch_object(Git, '_call_process')
     def test_id_abbrev(self, git):

test/git/test_repo.py

@@ -48,7 +48,7 @@ def test_heads_should_populate_head_data(self, git):
     def test_commits(self, git):
         git.return_value = fixture('rev_list')
 
-        commits = self.repo.commits('master', 10)
+        commits = self.repo.commits('master', max_count=10)
 
         c = commits[0]
         assert_equal('4c8124ffcf4039d292442eeccabdeca5af5c5017', c.id)
@@ -70,7 +70,7 @@ def test_commits(self, git):
         assert_equal("Merge branch 'site'", c.message)
 
         assert_true(git.called)
-        assert_equal(git.call_args, (('rev_list', 'master', '--'), {'skip': 0, 'pretty': 'raw', 'max_count': 10}))
+        assert_equal(git.call_args, (('rev_list', 'master', '--', ''), {'skip': 0, 'pretty': 'raw', 'max_count': 10}))
 
     @patch_object(Git, '_call_process')
     def test_commit_count(self, git):
@@ -79,7 +79,7 @@ def test_commit_count(self, git):
         assert_equal(655, self.repo.commit_count('master'))
 
         assert_true(git.called)
-        assert_equal(git.call_args, (('rev_list', 'master', '--'), {}))
+        assert_equal(git.call_args, (('rev_list', 'master', '--', ''), {}))
 
     @patch_object(Git, '_call_process')
     def test_commit(self, git):
@@ -90,7 +90,7 @@ def test_commit(self, git):
         assert_equal("4c8124ffcf4039d292442eeccabdeca5af5c5017", commit.id)
 
         assert_true(git.called)
-        assert_equal(git.call_args, (('rev_list', '4c8124ffcf4039d292442eeccabdeca5af5c5017', '--'), {'pretty': 'raw', 'max_count': 1}))
+        assert_equal(git.call_args, (('rev_list', '4c8124ffcf4039d292442eeccabdeca5af5c5017', '--', ''), {'pretty': 'raw', 'max_count': 1}))
 
     @patch_object(Git, '_call_process')
     def test_tree(self, git):