1 files changed, 43 insertions, 0 deletions
diff --git a/cgit/repos/utils.py b/cgit/repos/utils.py
new file mode 100644
index 0000000..84337e8
--- /dev/null
+++ b/cgit/repos/utils.py
@@ -0,0 +1,43 @@
+# Copyright (c) 2018 Egor Tensin <Egor.Tensin@gmail.com>
+# This file is part of the "cgit repos" project.
+# For details, see https://github.com/egor-tensin/cgit-repos.
+# Distributed under the MIT License.
+
+import contextlib
+import logging
+import os
+import subprocess
+
+
+def check_output(*args, stdout=subprocess.PIPE, **kwargs):
+    try:
+        result = subprocess.run(args, stdout=stdout, stderr=subprocess.STDOUT,
+                                encoding='utf-8', check=True, **kwargs)
+        if stdout != subprocess.DEVNULL:
+            if result.stdout is None:
+                logging.debug('%s', args)
+            else:
+                logging.debug('%s\n%s', args, result.stdout)
+        return result.returncode == 0, result.stdout
+    except subprocess.CalledProcessError as e:
+        if stdout != subprocess.DEVNULL:
+            logging.error('%s\n%s', e, e.output)
+        return e.returncode == 0, e.output
+
+
+def run(*args, discard_output=False, **kwargs):
+    if discard_output:
+        success, _ = check_output(*args, stdout=subprocess.DEVNULL, **kwargs)
+    else:
+        success, _ = check_output(*args, **kwargs)
+    return success
+
+
+@contextlib.contextmanager
+def chdir(new_cwd):
+    old_cwd = os.getcwd()
+    os.chdir(new_cwd)
+    try:
+        yield
+    finally:
+        os.chdir(old_cwd)