def indent(text, prefix):
""" String indentation """
try:
from textwrap import indent as _indent
except ImportError: # undefined function (wasn't added until Python 3.3)
def _indent(text, prefix): # Currently not supporting predicate arg
return ''.join(prefix + line for line in text.splitlines(True))
return _indent(text, prefix)
def indent(text, prefix):
""" String indentation """
try:
from textwrap import indent as _indent
except ImportError: # undefined function (wasn't added until Python 3.3)
def _indent(text, prefix, predicate=None):
if predicate:
warnings.warn("'predicate' argument not used", RuntimeWarning)
return ''.join(prefix+line for line in text.splitlines(True))
return _indent(text, prefix)
def linux_install_udev_rules():
"""verify and install the udev rules"""
parser = argparse.ArgumentParser()
parser.add_argument(
"--overwrite-existing",
help="overwrite rules if already present",
action="store_true",
)
parser.add_argument(
"rules",
help="rules file (default: download from github)",
default="",
nargs="?",
)
args = parser.parse_args()
if args.rules:
if not os.path.exists(args.rules):
raise IOError("rules file '{}' doesn't exist".format(args.rules))
udev_tmp_file = None
udev_fn = args.rules
else:
udev_tmp_file = tempfile.NamedTemporaryFile()
udev_fn = udev_tmp_file.name
try:
# download rules from github if no file is provided
if udev_tmp_file is not None:
url = "{}/{}".format(_GITHUB_REPO_URL,
os.path.basename(_UDEV_RULES_PATH))
try:
_log.info("downloading rules from github")
udev_data = urlopen(url).read()
except HTTPError:
_log.error("can't download '{}'".format(url))
sys.exit(1)
udev_tmp_file.write(udev_data)
udev_tmp_file.flush()
# check if rules need to be overwritten
if os.path.exists(_UDEV_RULES_PATH) and not args.overwrite_existing:
rules_differ = _diff_files(_UDEV_RULES_PATH, udev_fn)
if not rules_differ:
_log.info("udev rules already newest version")
sys.exit(0)
else:
_log.info(_indent(rules_differ, u" ").rstrip())
_log.info(
"udev rules differ. To overwrite run with '--overwrite-existing'"
)
sys.exit(1)
if not _request_confirmation("Install udev rules?"):
sys.exit(0)
# cp rules and execute
_log.info("Copying udev rules to {}".format(_UDEV_RULES_PATH))
subprocess.call(["sudo", "cp", udev_fn, _UDEV_RULES_PATH])
_log.info("Calling udevadm control --reload-rules")
subprocess.call(["sudo", "udevadm", "control", "--reload-rules"])
_log.info("Success")
sys.exit(0)
finally:
if udev_tmp_file is not None:
udev_tmp_file.close() # removes tempfile
def indent(val):
res = _indent(val, " ")
return res
def main_parser(): # type: () -> argparse.ArgumentParser
"""
Construct the main parser.
"""
# mypy does not recognize module.__path__
# https://github.com/python/mypy/issues/1422
paths = build.__path__ # type: Iterable[Optional[str]] # type: ignore
parser = argparse.ArgumentParser(
description=_indent( # textwrap.indent
textwrap.dedent(
'''
A simple, correct PEP 517 package builder.
By default, a source distribution (sdist) is built from {srcdir}
and a binary distribution (wheel) is built from the sdist.
This is recommended as it will ensure the sdist can be used
to build wheels.
Pass -s/--sdist and/or -w/--wheel to build a specific distribution.
If you do this, the default behavior will be disabled, and all
artifacts will be built from {srcdir} (even if you combine
-w/--wheel with -s/--sdist, the wheel will be built from {srcdir}).
'''
).strip(),
' ',
),
formatter_class=argparse.RawTextHelpFormatter,
)
parser.add_argument(
'srcdir',
type=str,
nargs='?',
default=os.getcwd(),
help='source directory (defaults to current directory)',
)
parser.add_argument(
'--version',
'-V',
action='version',
version='build {} ({})'.format(build.__version__, ', '.join(path for path in paths if path)),
)
parser.add_argument(
'--sdist',
'-s',
action='store_true',
help='build a source distribution (disables the default behavior)',
)
parser.add_argument(
'--wheel',
'-w',
action='store_true',
help='build a wheel (disables the default behavior)',
)
parser.add_argument(
'--outdir',
'-o',
type=str,
help='output directory (defaults to {{srcdir}}{sep}dist)'.format(sep=os.sep),
)
parser.add_argument(
'--skip-dependency-check',
'-x',
action='store_true',
help='do not check that build dependencies are installed',
)
parser.add_argument(
'--no-isolation',
'-n',
action='store_true',
help='do not isolate the build in a virtual environment',
)
parser.add_argument(
'--config-setting',
'-C',
action='append',
help='pass options to the backend. options which begin with a hyphen must be in the form of '
'"--config-setting=--opt(=value)" or "-C--opt(=value)"',
)
return parser