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70 lines
2.3 KiB
Python
70 lines
2.3 KiB
Python
# Copyright 2018 Ryan Dahl <ry@tinyclouds.org>
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# All rights reserved. MIT License.
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import os
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import subprocess
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executable_suffix = ".exe" if os.name == "nt" else ""
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def run(args, quiet=False, envs={}):
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if not quiet:
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print " ".join(args)
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env = os.environ.copy()
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for key in envs.keys():
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env[key] = envs[key]
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args[0] = os.path.normpath(args[0])
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shell = os.name == "nt" # Run through shell to make .bat/.cmd files work.
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subprocess.check_call(args, env=env, shell=shell)
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def remove_and_symlink(target, name, target_is_dir=False):
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try:
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# On Windows, directory symlink can only be removed with rmdir().
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if os.name == "nt" and os.path.isdir(name):
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os.rmdir(name)
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else:
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os.unlink(name)
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except:
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pass
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symlink(target, name, target_is_dir)
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def symlink(target, name, target_is_dir=False):
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if os.name == "nt":
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import ctypes
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CreateSymbolicLinkW = ctypes.windll.kernel32.CreateSymbolicLinkW
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CreateSymbolicLinkW.restype = ctypes.c_ubyte
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CreateSymbolicLinkW.argtypes = (ctypes.c_wchar_p, ctypes.c_wchar_p,
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ctypes.c_uint32)
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# Replace forward slashes by backward slashes.
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# Strangely it seems that this is only necessary for symlinks to files.
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# Forward slashes don't cause any issues when the target is a directory.
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target = target.replace("/", "\\")
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flags = 0x02 # SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE
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if (target_is_dir):
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flags |= 0x01 # SYMBOLIC_LINK_FLAG_DIRECTORY
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if not CreateSymbolicLinkW(name, target, flags):
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raise ctypes.WinError()
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else:
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os.symlink(target, name)
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def touch(fname):
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if os.path.exists(fname):
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os.utime(fname, None)
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else:
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open(fname, 'a').close()
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# Recursive search for files of certain extensions.
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# (Recursive glob doesn't exist in python 2.7.)
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def find_exts(directory, *extensions):
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matches = []
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for root, dirnames, filenames in os.walk(directory):
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for filename in filenames:
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for ext in extensions:
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if filename.endswith(ext):
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matches.append(os.path.join(root, filename))
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break
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return matches
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