1 files changed, 52 insertions, 0 deletions
diff --git a/python/mozbuild/mozbuild/dirutils.py b/python/mozbuild/mozbuild/dirutils.py
new file mode 100644
index 0000000000..efa4746301
--- /dev/null
+++ b/python/mozbuild/mozbuild/dirutils.py
@@ -0,0 +1,52 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this file,
+# You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# This file contains miscellaneous utility functions that don't belong anywhere
+# in particular.
+
+import errno
+import os
+import sys
+
+if sys.platform == "win32":
+    import ctypes
+
+    _kernel32 = ctypes.windll.kernel32
+    _FILE_ATTRIBUTE_NOT_CONTENT_INDEXED = 0x2000
+
+
+def ensureParentDir(path):
+    """Ensures the directory parent to the given file exists."""
+    d = os.path.dirname(path)
+    if d and not os.path.exists(path):
+        try:
+            os.makedirs(d)
+        except OSError as error:
+            if error.errno != errno.EEXIST:
+                raise
+
+
+def mkdir(path, not_indexed=False):
+    """Ensure a directory exists.
+
+    If ``not_indexed`` is True, an attribute is set that disables content
+    indexing on the directory.
+    """
+    try:
+        os.makedirs(path)
+    except OSError as e:
+        if e.errno != errno.EEXIST:
+            raise
+
+    if not_indexed:
+        if sys.platform == "win32":
+            if isinstance(path, str):
+                fn = _kernel32.SetFileAttributesW
+            else:
+                fn = _kernel32.SetFileAttributesA
+
+            fn(path, _FILE_ATTRIBUTE_NOT_CONTENT_INDEXED)
+        elif sys.platform == "darwin":
+            with open(os.path.join(path, ".metadata_never_index"), "a"):
+                pass