iframe-proxy | Sunbelt Computer Software

History

239 lines (191 loc) · 6.87 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

from __future__ import annotations

import contextlib

import errno

import importlib.resources

import os.path

import shutil

import stat

import subprocess

import sys

from collections.abc import Generator

from types import TracebackType

from typing import Any

from typing import Callable

from pre_commit import parse_shebang

def force_bytes(exc: Any) -> bytes:

with contextlib.suppress(TypeError):

return bytes(exc)

with contextlib.suppress(Exception):

return str(exc).encode()

return f'<unprintable {type(exc).__name__} object>'.encode()

@contextlib.contextmanager

def clean_path_on_failure(path: str) -> Generator[None]:

"""Cleans up the directory on an exceptional failure."""

try:

yield

except BaseException:

if os.path.exists(path):

rmtree(path)

raise

def resource_text(filename: str) -> str:

files = importlib.resources.files('pre_commit.resources')

return files.joinpath(filename).read_text()

def make_executable(filename: str) -> None:

original_mode = os.stat(filename).st_mode

new_mode = original_mode | stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH

os.chmod(filename, new_mode)

class CalledProcessError(RuntimeError):

def __init__(

self,

returncode: int,

cmd: tuple[str, ...],

stdout: bytes,

stderr: bytes | None,

) -> None:

super().__init__(returncode, cmd, stdout, stderr)

self.returncode = returncode

self.cmd = cmd

self.stdout = stdout

self.stderr = stderr

def __bytes__(self) -> bytes:

def _indent_or_none(part: bytes | None) -> bytes:

if part:

return b'\n ' + part.replace(b'\n', b'\n ').rstrip()

else:

return b' (none)'

return b''.join((

f'command: {self.cmd!r}\n'.encode(),

f'return code: {self.returncode}\n'.encode(),

b'stdout:', _indent_or_none(self.stdout), b'\n',

b'stderr:', _indent_or_none(self.stderr),

))

def __str__(self) -> str:

return self.__bytes__().decode()

def _setdefault_kwargs(kwargs: dict[str, Any]) -> None:

for arg in ('stdin', 'stdout', 'stderr'):

kwargs.setdefault(arg, subprocess.PIPE)

def _oserror_to_output(e: OSError) -> tuple[int, bytes, None]:

return 1, force_bytes(e).rstrip(b'\n') + b'\n', None

def cmd_output_b(

*cmd: str,

check: bool = True,

**kwargs: Any,

) -> tuple[int, bytes, bytes | None]:

_setdefault_kwargs(kwargs)

try:

cmd = parse_shebang.normalize_cmd(cmd, env=kwargs.get('env'))

except parse_shebang.ExecutableNotFoundError as e:

returncode, stdout_b, stderr_b = e.to_output()

else:

try:

proc = subprocess.Popen(cmd, **kwargs)

except OSError as e:

returncode, stdout_b, stderr_b = _oserror_to_output(e)

else:

stdout_b, stderr_b = proc.communicate()

returncode = proc.returncode

if check and returncode:

raise CalledProcessError(returncode, cmd, stdout_b, stderr_b)

return returncode, stdout_b, stderr_b

def cmd_output(*cmd: str, **kwargs: Any) -> tuple[int, str, str | None]:

returncode, stdout_b, stderr_b = cmd_output_b(*cmd, **kwargs)

stdout = stdout_b.decode() if stdout_b is not None else None

stderr = stderr_b.decode() if stderr_b is not None else None

return returncode, stdout, stderr

if sys.platform != 'win32': # pragma: win32 no cover

from os import openpty

import termios

class Pty:

def __init__(self) -> None:

self.r: int | None = None

self.w: int | None = None

def __enter__(self) -> Pty:

self.r, self.w = openpty()

# tty flags normally change \n to \r\n

attrs = termios.tcgetattr(self.w)

assert isinstance(attrs[1], int)

attrs[1] &= ~(termios.ONLCR | termios.OPOST)

termios.tcsetattr(self.w, termios.TCSANOW, attrs)

return self

def close_w(self) -> None:

if self.w is not None:

os.close(self.w)

self.w = None

def close_r(self) -> None:

assert self.r is not None

os.close(self.r)

self.r = None

def __exit__(

self,

exc_type: type[BaseException] | None,

exc_value: BaseException | None,

traceback: TracebackType | None,

) -> None:

self.close_w()

self.close_r()

def cmd_output_p(

*cmd: str,

check: bool = True,

**kwargs: Any,

) -> tuple[int, bytes, bytes | None]:

assert check is False

assert kwargs['stderr'] == subprocess.STDOUT, kwargs['stderr']

_setdefault_kwargs(kwargs)

try:

cmd = parse_shebang.normalize_cmd(cmd)

except parse_shebang.ExecutableNotFoundError as e:

return e.to_output()

with open(os.devnull) as devnull, Pty() as pty:

assert pty.r is not None

kwargs.update({'stdin': devnull, 'stdout': pty.w, 'stderr': pty.w})

try:

proc = subprocess.Popen(cmd, **kwargs)

except OSError as e:

return _oserror_to_output(e)

pty.close_w()

buf = b''

while True:

try:

bts = os.read(pty.r, 4096)

except OSError as e:

if e.errno == errno.EIO:

bts = b''

else:

raise

else:

buf += bts

if not bts:

break

return proc.wait(), buf, None

else: # pragma: no cover

cmd_output_p = cmd_output_b

def _handle_readonly(

func: Callable[[str], object],

path: str,

exc: BaseException,

) -> None:

if (

func in (os.rmdir, os.remove, os.unlink) and

isinstance(exc, OSError) and

exc.errno in {errno.EACCES, errno.EPERM}

for p in (path, os.path.dirname(path)):

os.chmod(p, os.stat(p).st_mode | stat.S_IWUSR)

func(path)

else:

raise

if sys.version_info < (3, 12): # pragma: <3.12 cover

def _handle_readonly_old(

func: Callable[[str], object],

path: str,

excinfo: tuple[type[BaseException], BaseException, TracebackType],

) -> None:

return _handle_readonly(func, path, excinfo[1])

def rmtree(path: str) -> None:

shutil.rmtree(path, ignore_errors=False, onerror=_handle_readonly_old)

else: # pragma: >=3.12 cover

def rmtree(path: str) -> None:

"""On windows, rmtree fails for readonly dirs."""

shutil.rmtree(path, ignore_errors=False, onexc=_handle_readonly)

def win_exe(s: str) -> str:

return s if sys.platform != 'win32' else f'{s}.exe'

Sunbelt Computer Software

PL/B Language Development and Support

Navigation Menu

Sunbelt Computer Software

PL/B Language Development and Support

FilesExpand file tree

util.py

Latest commit

History

util.py

File metadata and controls