intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 20 insertions, 0 deletions

diff --git a/library/python/find_root/__init__.py b/library/python/find_root/__init__.py
new file mode 100644
index 00000000000..6da604d62e1
--- /dev/null
+++ b/library/python/find_root/__init__.py
@@ -0,0 +1,20 @@
+import os
+
+
+def is_root(path):
+    return os.path.exists(os.path.join(path, ".arcadia.root")) or os.path.exists(os.path.join(path, 'devtools', 'ya', 'ya.conf.json'))
+
+
+def detect_root(path, detector=is_root):
+    return _find_path(path, detector)
+
+
+def _find_path(starts_from, check):
+    p = os.path.realpath(starts_from)
+    while True:
+        if check(p):
+            return p
+        next_p = os.path.dirname(p)
+        if next_p == p:
+            return None
+        p = next_p