mirror of
https://github.com/denoland/deno.git
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135 lines
4.3 KiB
Python
135 lines
4.3 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 shutil
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import stat
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import sys
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import subprocess
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executable_suffix = ".exe" if os.name == "nt" else ""
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root_path = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
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def make_env(merge_env={}, env=None):
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if env is None:
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env = os.environ
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env = env.copy()
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for key in merge_env.keys():
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env[key] = merge_env[key]
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return env
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def run(args, quiet=False, cwd=None, env=None, merge_env={}):
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args[0] = os.path.normpath(args[0])
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if not quiet:
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print " ".join(args)
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env = make_env(env=env, merge_env=merge_env)
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shell = os.name == "nt" # Run through shell to make .bat/.cmd files work.
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rc = subprocess.call(args, cwd=cwd, env=env, shell=shell)
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if rc != 0:
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sys.exit(rc)
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def run_output(args, quiet=False, cwd=None, env=None, merge_env={}):
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args[0] = os.path.normpath(args[0])
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if not quiet:
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print " ".join(args)
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env = make_env(env=env, merge_env=merge_env)
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shell = os.name == "nt" # Run through shell to make .bat/.cmd files work.
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return subprocess.check_output(args, cwd=cwd, 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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from ctypes import WinDLL, WinError, GetLastError
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from ctypes.wintypes import BOOLEAN, DWORD, LPCWSTR
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kernel32 = WinDLL('kernel32', use_last_error=False)
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CreateSymbolicLinkW = kernel32.CreateSymbolicLinkW
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CreateSymbolicLinkW.restype = BOOLEAN
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CreateSymbolicLinkW.argtypes = (LPCWSTR, LPCWSTR, DWORD)
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# File-type symlinks can only use backslashes as separators.
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target = os.path.normpath(target)
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# If the symlink points at a directory, it needs to have the appropriate
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# flag set, otherwise the link will be created but it won't work.
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if target_is_dir:
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type_flag = 0x01 # SYMBOLIC_LINK_FLAG_DIRECTORY
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else:
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type_flag = 0
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# Before Windows 10, creating symlinks requires admin privileges.
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# As of Win 10, there is a flag that allows anyone to create them.
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# Initially, try to use this flag.
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unpriv_flag = 0x02 # SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE
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r = CreateSymbolicLinkW(name, target, type_flag | unpriv_flag)
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# If it failed with ERROR_INVALID_PARAMETER, try again without the
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# 'allow unprivileged create' flag.
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if not r and GetLastError() == 87: # ERROR_INVALID_PARAMETER
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r = CreateSymbolicLinkW(name, target, type_flag)
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# Throw if unsuccessful even after the second attempt.
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if not r:
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raise 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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# The Python equivalent of `rm -rf`.
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def rmtree(directory):
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# On Windows, shutil.rmtree() won't delete files that have a readonly bit.
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# Git creates some files that do. The 'onerror' callback deals with those.
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def rm_readonly(func, path, _):
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os.chmod(path, stat.S_IWRITE)
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func(path)
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shutil.rmtree(directory, onerror=rm_readonly)
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def build_mode(default="debug"):
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if "DENO_BUILD_MODE" in os.environ:
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return os.environ["DENO_BUILD_MODE"]
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else:
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return default
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# E.G. "out/debug"
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def build_path():
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if "DENO_BUILD_PATH" in os.environ:
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return os.environ["DENO_BUILD_PATH"]
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else:
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return os.path.join(root_path, "out", build_mode())
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