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denoland-deno/tools/util.py
2018-07-18 15:43:50 -04:00

50 lines
1.4 KiB
Python

# Copyright 2018 Ryan Dahl <ry@tinyclouds.org>
# All rights reserved. MIT License.
import os
import subprocess
def run(args, quiet=False):
if not quiet:
print " ".join(args)
env = os.environ.copy()
if os.name == "nt":
# Run through shell to make .bat/.cmd files work.
args = ["cmd", "/c"] + args
subprocess.check_call(args, env=env)
def remove_and_symlink(target, name, target_is_dir=False):
try:
# On Windows, directory symlink can only be removed with rmdir().
if os.name == "nt" and os.path.isdir(name):
os.rmdir(name)
else:
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()