1 files changed, 42 insertions, 0 deletions
diff --git a/tools/util.py b/tools/util.py
new file mode 100644
index 000000000..1d44acd48
--- /dev/null
+++ b/tools/util.py
@@ -0,0 +1,42 @@
+# Copyright 2018 Ryan Dahl <ry@tinyclouds.org>
+# All rights reserved. MIT License.
+import os
+import subprocess
+
+
+def run(args):
+    print " ".join(args)
+    env = os.environ.copy()
+    subprocess.check_call(args, env=env)
+
+
+def remove_and_symlink(target, name, target_is_dir=False):
+    try:
+        os.unlink(name)
+    except:
+        pass
+    symlink(target, name, target_is_dir)
+
+
+def symlink(target, name, target_is_dir=False):
+    if os.name == "nt":
+        import ctypes
+        CreateSymbolicLinkW = ctypes.windll.kernel32.CreateSymbolicLinkW
+        CreateSymbolicLinkW.restype = ctypes.c_ubyte
+        CreateSymbolicLinkW.argtypes = (ctypes.c_wchar_p, ctypes.c_wchar_p,
+                                        ctypes.c_uint32)
+
+        flags = 0x02  # SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE
+        if (target_is_dir):
+            flags |= 0x01  # SYMBOLIC_LINK_FLAG_DIRECTORY
+        if not CreateSymbolicLinkW(name, target, flags):
+            raise ctypes.WinError()
+    else:
+        os.symlink(target, name)
+
+
+def touch(fname):
+    if os.path.exists(fname):
+        os.utime(fname, None)
+    else:
+        open(fname, 'a').close()