1 files changed, 100 insertions, 0 deletions
diff --git a/src/arrow/dev/archery/archery/utils/git.py b/src/arrow/dev/archery/archery/utils/git.py
new file mode 100644
index 000000000..798bc5d70
--- /dev/null
+++ b/src/arrow/dev/archery/archery/utils/git.py
@@ -0,0 +1,100 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+from .command import Command, capture_stdout, default_bin
+from ..compat import _stringify_path
+
+
+# Decorator prepending argv with the git sub-command found with the method
+# name.
+def git_cmd(fn):
+    # function name is the subcommand
+    sub_cmd = fn.__name__.replace("_", "-")
+
+    def wrapper(self, *argv, **kwargs):
+        return fn(self, sub_cmd, *argv, **kwargs)
+    return wrapper
+
+
+class Git(Command):
+    def __init__(self, git_bin=None):
+        self.bin = default_bin(git_bin, "git")
+
+    def run_cmd(self, cmd, *argv, git_dir=None, **kwargs):
+        """ Inject flags before sub-command in argv. """
+        opts = []
+        if git_dir is not None:
+            opts.extend(["-C", _stringify_path(git_dir)])
+
+        return self.run(*opts, cmd, *argv, **kwargs)
+
+    @capture_stdout(strip=False)
+    @git_cmd
+    def archive(self, *argv, **kwargs):
+        return self.run_cmd(*argv, **kwargs)
+
+    @git_cmd
+    def clone(self, *argv, **kwargs):
+        return self.run_cmd(*argv, **kwargs)
+
+    @git_cmd
+    def fetch(self, *argv, **kwargs):
+        return self.run_cmd(*argv, **kwargs)
+
+    @git_cmd
+    def checkout(self, *argv, **kwargs):
+        return self.run_cmd(*argv, **kwargs)
+
+    def dirty(self, **kwargs):
+        return len(self.status("--short", **kwargs)) > 0
+
+    @git_cmd
+    def log(self, *argv, **kwargs):
+        return self.run_cmd(*argv, **kwargs)
+
+    @capture_stdout(strip=True, listify=True)
+    @git_cmd
+    def ls_files(self, *argv, listify=False, **kwargs):
+        stdout = self.run_cmd(*argv, **kwargs)
+        return stdout
+
+    @capture_stdout(strip=True)
+    @git_cmd
+    def rev_parse(self, *argv, **kwargs):
+        return self.run_cmd(*argv, **kwargs)
+
+    @capture_stdout(strip=True)
+    @git_cmd
+    def status(self, *argv, **kwargs):
+        return self.run_cmd(*argv, **kwargs)
+
+    @capture_stdout(strip=True)
+    def head(self, **kwargs):
+        """ Return commit pointed by HEAD. """
+        return self.rev_parse("HEAD", **kwargs)
+
+    @capture_stdout(strip=True)
+    def current_branch(self, **kwargs):
+        return self.rev_parse("--abbrev-ref", "HEAD", **kwargs)
+
+    def repository_root(self, git_dir=None, **kwargs):
+        """ Locates the repository's root path from a subdirectory. """
+        stdout = self.rev_parse("--show-toplevel", git_dir=git_dir, **kwargs)
+        return stdout.decode('utf-8')
+
+
+git = Git()