move argument parser to own file
This commit is contained in:
Ronny Pfannschmidt
parent
026cd36237
commit
c9df77cbd6
|
|
@ -518,395 +518,6 @@ def _get_plugin_specs_as_list(specs):
|
|||
return []
|
||||
|
||||
|
||||
class Parser(object):
|
||||
""" Parser for command line arguments and ini-file values.
|
||||
|
||||
:ivar extra_info: dict of generic param -> value to display in case
|
||||
there's an error processing the command line arguments.
|
||||
"""
|
||||
|
||||
def __init__(self, usage=None, processopt=None):
|
||||
self._anonymous = OptionGroup("custom options", parser=self)
|
||||
self._groups = []
|
||||
self._processopt = processopt
|
||||
self._usage = usage
|
||||
self._inidict = {}
|
||||
self._ininames = []
|
||||
self.extra_info = {}
|
||||
|
||||
def processoption(self, option):
|
||||
if self._processopt:
|
||||
if option.dest:
|
||||
self._processopt(option)
|
||||
|
||||
def getgroup(self, name, description="", after=None):
|
||||
""" get (or create) a named option Group.
|
||||
|
||||
:name: name of the option group.
|
||||
:description: long description for --help output.
|
||||
:after: name of other group, used for ordering --help output.
|
||||
|
||||
The returned group object has an ``addoption`` method with the same
|
||||
signature as :py:func:`parser.addoption
|
||||
<_pytest.config.Parser.addoption>` but will be shown in the
|
||||
respective group in the output of ``pytest. --help``.
|
||||
"""
|
||||
for group in self._groups:
|
||||
if group.name == name:
|
||||
return group
|
||||
group = OptionGroup(name, description, parser=self)
|
||||
i = 0
|
||||
for i, grp in enumerate(self._groups):
|
||||
if grp.name == after:
|
||||
break
|
||||
self._groups.insert(i + 1, group)
|
||||
return group
|
||||
|
||||
def addoption(self, *opts, **attrs):
|
||||
""" register a command line option.
|
||||
|
||||
:opts: option names, can be short or long options.
|
||||
:attrs: same attributes which the ``add_option()`` function of the
|
||||
`argparse library
|
||||
<http://docs.python.org/2/library/argparse.html>`_
|
||||
accepts.
|
||||
|
||||
After command line parsing options are available on the pytest config
|
||||
object via ``config.option.NAME`` where ``NAME`` is usually set
|
||||
by passing a ``dest`` attribute, for example
|
||||
``addoption("--long", dest="NAME", ...)``.
|
||||
"""
|
||||
self._anonymous.addoption(*opts, **attrs)
|
||||
|
||||
def parse(self, args, namespace=None):
|
||||
from _pytest._argcomplete import try_argcomplete
|
||||
|
||||
self.optparser = self._getparser()
|
||||
try_argcomplete(self.optparser)
|
||||
return self.optparser.parse_args([str(x) for x in args], namespace=namespace)
|
||||
|
||||
def _getparser(self):
|
||||
from _pytest._argcomplete import filescompleter
|
||||
|
||||
optparser = MyOptionParser(self, self.extra_info)
|
||||
groups = self._groups + [self._anonymous]
|
||||
for group in groups:
|
||||
if group.options:
|
||||
desc = group.description or group.name
|
||||
arggroup = optparser.add_argument_group(desc)
|
||||
for option in group.options:
|
||||
n = option.names()
|
||||
a = option.attrs()
|
||||
arggroup.add_argument(*n, **a)
|
||||
# bash like autocompletion for dirs (appending '/')
|
||||
optparser.add_argument(FILE_OR_DIR, nargs="*").completer = filescompleter
|
||||
return optparser
|
||||
|
||||
def parse_setoption(self, args, option, namespace=None):
|
||||
parsedoption = self.parse(args, namespace=namespace)
|
||||
for name, value in parsedoption.__dict__.items():
|
||||
setattr(option, name, value)
|
||||
return getattr(parsedoption, FILE_OR_DIR)
|
||||
|
||||
def parse_known_args(self, args, namespace=None):
|
||||
"""parses and returns a namespace object with known arguments at this
|
||||
point.
|
||||
"""
|
||||
return self.parse_known_and_unknown_args(args, namespace=namespace)[0]
|
||||
|
||||
def parse_known_and_unknown_args(self, args, namespace=None):
|
||||
"""parses and returns a namespace object with known arguments, and
|
||||
the remaining arguments unknown at this point.
|
||||
"""
|
||||
optparser = self._getparser()
|
||||
args = [str(x) for x in args]
|
||||
return optparser.parse_known_args(args, namespace=namespace)
|
||||
|
||||
def addini(self, name, help, type=None, default=None):
|
||||
""" register an ini-file option.
|
||||
|
||||
:name: name of the ini-variable
|
||||
:type: type of the variable, can be ``pathlist``, ``args``, ``linelist``
|
||||
or ``bool``.
|
||||
:default: default value if no ini-file option exists but is queried.
|
||||
|
||||
The value of ini-variables can be retrieved via a call to
|
||||
:py:func:`config.getini(name) <_pytest.config.Config.getini>`.
|
||||
"""
|
||||
assert type in (None, "pathlist", "args", "linelist", "bool")
|
||||
self._inidict[name] = (help, type, default)
|
||||
self._ininames.append(name)
|
||||
|
||||
|
||||
class ArgumentError(Exception):
|
||||
"""
|
||||
Raised if an Argument instance is created with invalid or
|
||||
inconsistent arguments.
|
||||
"""
|
||||
|
||||
def __init__(self, msg, option):
|
||||
self.msg = msg
|
||||
self.option_id = str(option)
|
||||
|
||||
def __str__(self):
|
||||
if self.option_id:
|
||||
return "option %s: %s" % (self.option_id, self.msg)
|
||||
else:
|
||||
return self.msg
|
||||
|
||||
|
||||
class Argument(object):
|
||||
"""class that mimics the necessary behaviour of optparse.Option
|
||||
|
||||
its currently a least effort implementation
|
||||
and ignoring choices and integer prefixes
|
||||
https://docs.python.org/3/library/optparse.html#optparse-standard-option-types
|
||||
"""
|
||||
_typ_map = {"int": int, "string": str, "float": float, "complex": complex}
|
||||
|
||||
def __init__(self, *names, **attrs):
|
||||
"""store parms in private vars for use in add_argument"""
|
||||
self._attrs = attrs
|
||||
self._short_opts = []
|
||||
self._long_opts = []
|
||||
self.dest = attrs.get("dest")
|
||||
if "%default" in (attrs.get("help") or ""):
|
||||
warnings.warn(
|
||||
'pytest now uses argparse. "%default" should be'
|
||||
' changed to "%(default)s" ',
|
||||
DeprecationWarning,
|
||||
stacklevel=3,
|
||||
)
|
||||
try:
|
||||
typ = attrs["type"]
|
||||
except KeyError:
|
||||
pass
|
||||
else:
|
||||
# this might raise a keyerror as well, don't want to catch that
|
||||
if isinstance(typ, six.string_types):
|
||||
if typ == "choice":
|
||||
warnings.warn(
|
||||
"type argument to addoption() is a string %r."
|
||||
" For parsearg this is optional and when supplied"
|
||||
" should be a type."
|
||||
" (options: %s)" % (typ, names),
|
||||
DeprecationWarning,
|
||||
stacklevel=3,
|
||||
)
|
||||
# argparse expects a type here take it from
|
||||
# the type of the first element
|
||||
attrs["type"] = type(attrs["choices"][0])
|
||||
else:
|
||||
warnings.warn(
|
||||
"type argument to addoption() is a string %r."
|
||||
" For parsearg this should be a type."
|
||||
" (options: %s)" % (typ, names),
|
||||
DeprecationWarning,
|
||||
stacklevel=3,
|
||||
)
|
||||
attrs["type"] = Argument._typ_map[typ]
|
||||
# used in test_parseopt -> test_parse_defaultgetter
|
||||
self.type = attrs["type"]
|
||||
else:
|
||||
self.type = typ
|
||||
try:
|
||||
# attribute existence is tested in Config._processopt
|
||||
self.default = attrs["default"]
|
||||
except KeyError:
|
||||
pass
|
||||
self._set_opt_strings(names)
|
||||
if not self.dest:
|
||||
if self._long_opts:
|
||||
self.dest = self._long_opts[0][2:].replace("-", "_")
|
||||
else:
|
||||
try:
|
||||
self.dest = self._short_opts[0][1:]
|
||||
except IndexError:
|
||||
raise ArgumentError("need a long or short option", self)
|
||||
|
||||
def names(self):
|
||||
return self._short_opts + self._long_opts
|
||||
|
||||
def attrs(self):
|
||||
# update any attributes set by processopt
|
||||
attrs = "default dest help".split()
|
||||
if self.dest:
|
||||
attrs.append(self.dest)
|
||||
for attr in attrs:
|
||||
try:
|
||||
self._attrs[attr] = getattr(self, attr)
|
||||
except AttributeError:
|
||||
pass
|
||||
if self._attrs.get("help"):
|
||||
a = self._attrs["help"]
|
||||
a = a.replace("%default", "%(default)s")
|
||||
# a = a.replace('%prog', '%(prog)s')
|
||||
self._attrs["help"] = a
|
||||
return self._attrs
|
||||
|
||||
def _set_opt_strings(self, opts):
|
||||
"""directly from optparse
|
||||
|
||||
might not be necessary as this is passed to argparse later on"""
|
||||
for opt in opts:
|
||||
if len(opt) < 2:
|
||||
raise ArgumentError(
|
||||
"invalid option string %r: "
|
||||
"must be at least two characters long" % opt,
|
||||
self,
|
||||
)
|
||||
elif len(opt) == 2:
|
||||
if not (opt[0] == "-" and opt[1] != "-"):
|
||||
raise ArgumentError(
|
||||
"invalid short option string %r: "
|
||||
"must be of the form -x, (x any non-dash char)" % opt,
|
||||
self,
|
||||
)
|
||||
self._short_opts.append(opt)
|
||||
else:
|
||||
if not (opt[0:2] == "--" and opt[2] != "-"):
|
||||
raise ArgumentError(
|
||||
"invalid long option string %r: "
|
||||
"must start with --, followed by non-dash" % opt,
|
||||
self,
|
||||
)
|
||||
self._long_opts.append(opt)
|
||||
|
||||
def __repr__(self):
|
||||
args = []
|
||||
if self._short_opts:
|
||||
args += ["_short_opts: " + repr(self._short_opts)]
|
||||
if self._long_opts:
|
||||
args += ["_long_opts: " + repr(self._long_opts)]
|
||||
args += ["dest: " + repr(self.dest)]
|
||||
if hasattr(self, "type"):
|
||||
args += ["type: " + repr(self.type)]
|
||||
if hasattr(self, "default"):
|
||||
args += ["default: " + repr(self.default)]
|
||||
return "Argument({})".format(", ".join(args))
|
||||
|
||||
|
||||
class OptionGroup(object):
|
||||
|
||||
def __init__(self, name, description="", parser=None):
|
||||
self.name = name
|
||||
self.description = description
|
||||
self.options = []
|
||||
self.parser = parser
|
||||
|
||||
def addoption(self, *optnames, **attrs):
|
||||
""" add an option to this group.
|
||||
|
||||
if a shortened version of a long option is specified it will
|
||||
be suppressed in the help. addoption('--twowords', '--two-words')
|
||||
results in help showing '--two-words' only, but --twowords gets
|
||||
accepted **and** the automatic destination is in args.twowords
|
||||
"""
|
||||
conflict = set(optnames).intersection(
|
||||
name for opt in self.options for name in opt.names()
|
||||
)
|
||||
if conflict:
|
||||
raise ValueError("option names %s already added" % conflict)
|
||||
option = Argument(*optnames, **attrs)
|
||||
self._addoption_instance(option, shortupper=False)
|
||||
|
||||
def _addoption(self, *optnames, **attrs):
|
||||
option = Argument(*optnames, **attrs)
|
||||
self._addoption_instance(option, shortupper=True)
|
||||
|
||||
def _addoption_instance(self, option, shortupper=False):
|
||||
if not shortupper:
|
||||
for opt in option._short_opts:
|
||||
if opt[0] == "-" and opt[1].islower():
|
||||
raise ValueError("lowercase shortoptions reserved")
|
||||
if self.parser:
|
||||
self.parser.processoption(option)
|
||||
self.options.append(option)
|
||||
|
||||
|
||||
class MyOptionParser(argparse.ArgumentParser):
|
||||
|
||||
def __init__(self, parser, extra_info=None):
|
||||
if not extra_info:
|
||||
extra_info = {}
|
||||
self._parser = parser
|
||||
argparse.ArgumentParser.__init__(
|
||||
self,
|
||||
usage=parser._usage,
|
||||
add_help=False,
|
||||
formatter_class=DropShorterLongHelpFormatter,
|
||||
)
|
||||
# extra_info is a dict of (param -> value) to display if there's
|
||||
# an usage error to provide more contextual information to the user
|
||||
self.extra_info = extra_info
|
||||
|
||||
def parse_args(self, args=None, namespace=None):
|
||||
"""allow splitting of positional arguments"""
|
||||
args, argv = self.parse_known_args(args, namespace)
|
||||
if argv:
|
||||
for arg in argv:
|
||||
if arg and arg[0] == "-":
|
||||
lines = ["unrecognized arguments: %s" % (" ".join(argv))]
|
||||
for k, v in sorted(self.extra_info.items()):
|
||||
lines.append(" %s: %s" % (k, v))
|
||||
self.error("\n".join(lines))
|
||||
getattr(args, FILE_OR_DIR).extend(argv)
|
||||
return args
|
||||
|
||||
|
||||
class DropShorterLongHelpFormatter(argparse.HelpFormatter):
|
||||
"""shorten help for long options that differ only in extra hyphens
|
||||
|
||||
- collapse **long** options that are the same except for extra hyphens
|
||||
- special action attribute map_long_option allows surpressing additional
|
||||
long options
|
||||
- shortcut if there are only two options and one of them is a short one
|
||||
- cache result on action object as this is called at least 2 times
|
||||
"""
|
||||
|
||||
def _format_action_invocation(self, action):
|
||||
orgstr = argparse.HelpFormatter._format_action_invocation(self, action)
|
||||
if orgstr and orgstr[0] != "-": # only optional arguments
|
||||
return orgstr
|
||||
res = getattr(action, "_formatted_action_invocation", None)
|
||||
if res:
|
||||
return res
|
||||
options = orgstr.split(", ")
|
||||
if len(options) == 2 and (len(options[0]) == 2 or len(options[1]) == 2):
|
||||
# a shortcut for '-h, --help' or '--abc', '-a'
|
||||
action._formatted_action_invocation = orgstr
|
||||
return orgstr
|
||||
return_list = []
|
||||
option_map = getattr(action, "map_long_option", {})
|
||||
if option_map is None:
|
||||
option_map = {}
|
||||
short_long = {}
|
||||
for option in options:
|
||||
if len(option) == 2 or option[2] == " ":
|
||||
continue
|
||||
if not option.startswith("--"):
|
||||
raise ArgumentError(
|
||||
'long optional argument without "--": [%s]' % (option), self
|
||||
)
|
||||
xxoption = option[2:]
|
||||
if xxoption.split()[0] not in option_map:
|
||||
shortened = xxoption.replace("-", "")
|
||||
if (
|
||||
shortened not in short_long
|
||||
or len(short_long[shortened]) < len(xxoption)
|
||||
):
|
||||
short_long[shortened] = xxoption
|
||||
# now short_long has been filled out to the longest with dashes
|
||||
# **and** we keep the right option ordering from add_argument
|
||||
for option in options:
|
||||
if len(option) == 2 or option[2] == " ":
|
||||
return_list.append(option)
|
||||
if option[2:] == short_long.get(option.replace("-", "")):
|
||||
return_list.append(option.replace(" ", "=", 1))
|
||||
action._formatted_action_invocation = ", ".join(return_list)
|
||||
return action._formatted_action_invocation
|
||||
|
||||
|
||||
def _ensure_removed_sysmodule(modname):
|
||||
try:
|
||||
del sys.modules[modname]
|
||||
|
|
@ -921,7 +532,6 @@ class Notset(object):
|
|||
|
||||
|
||||
notset = Notset()
|
||||
FILE_OR_DIR = "file_or_dir"
|
||||
|
||||
|
||||
def _iter_rewritable_modules(package_files):
|
||||
|
|
@ -943,6 +553,8 @@ class Config(object):
|
|||
#: access to command line option as attributes.
|
||||
#: (deprecated), use :py:func:`getoption() <_pytest.config.Config.getoption>` instead
|
||||
self.option = argparse.Namespace()
|
||||
from .argparsing import Parser, FILE_OR_DIR
|
||||
|
||||
_a = FILE_OR_DIR
|
||||
self._parser = Parser(
|
||||
usage="%%(prog)s [options] [%s] [%s] [...]" % (_a, _a),
|
||||
|
|
|
|||
|
|
@ -0,0 +1,394 @@
|
|||
import six
|
||||
import warnings
|
||||
import argparse
|
||||
|
||||
FILE_OR_DIR = "file_or_dir"
|
||||
|
||||
|
||||
class Parser(object):
|
||||
""" Parser for command line arguments and ini-file values.
|
||||
|
||||
:ivar extra_info: dict of generic param -> value to display in case
|
||||
there's an error processing the command line arguments.
|
||||
"""
|
||||
|
||||
def __init__(self, usage=None, processopt=None):
|
||||
self._anonymous = OptionGroup("custom options", parser=self)
|
||||
self._groups = []
|
||||
self._processopt = processopt
|
||||
self._usage = usage
|
||||
self._inidict = {}
|
||||
self._ininames = []
|
||||
self.extra_info = {}
|
||||
|
||||
def processoption(self, option):
|
||||
if self._processopt:
|
||||
if option.dest:
|
||||
self._processopt(option)
|
||||
|
||||
def getgroup(self, name, description="", after=None):
|
||||
""" get (or create) a named option Group.
|
||||
|
||||
:name: name of the option group.
|
||||
:description: long description for --help output.
|
||||
:after: name of other group, used for ordering --help output.
|
||||
|
||||
The returned group object has an ``addoption`` method with the same
|
||||
signature as :py:func:`parser.addoption
|
||||
<_pytest.config.Parser.addoption>` but will be shown in the
|
||||
respective group in the output of ``pytest. --help``.
|
||||
"""
|
||||
for group in self._groups:
|
||||
if group.name == name:
|
||||
return group
|
||||
group = OptionGroup(name, description, parser=self)
|
||||
i = 0
|
||||
for i, grp in enumerate(self._groups):
|
||||
if grp.name == after:
|
||||
break
|
||||
self._groups.insert(i + 1, group)
|
||||
return group
|
||||
|
||||
def addoption(self, *opts, **attrs):
|
||||
""" register a command line option.
|
||||
|
||||
:opts: option names, can be short or long options.
|
||||
:attrs: same attributes which the ``add_option()`` function of the
|
||||
`argparse library
|
||||
<http://docs.python.org/2/library/argparse.html>`_
|
||||
accepts.
|
||||
|
||||
After command line parsing options are available on the pytest config
|
||||
object via ``config.option.NAME`` where ``NAME`` is usually set
|
||||
by passing a ``dest`` attribute, for example
|
||||
``addoption("--long", dest="NAME", ...)``.
|
||||
"""
|
||||
self._anonymous.addoption(*opts, **attrs)
|
||||
|
||||
def parse(self, args, namespace=None):
|
||||
from _pytest._argcomplete import try_argcomplete
|
||||
|
||||
self.optparser = self._getparser()
|
||||
try_argcomplete(self.optparser)
|
||||
return self.optparser.parse_args([str(x) for x in args], namespace=namespace)
|
||||
|
||||
def _getparser(self):
|
||||
from _pytest._argcomplete import filescompleter
|
||||
|
||||
optparser = MyOptionParser(self, self.extra_info)
|
||||
groups = self._groups + [self._anonymous]
|
||||
for group in groups:
|
||||
if group.options:
|
||||
desc = group.description or group.name
|
||||
arggroup = optparser.add_argument_group(desc)
|
||||
for option in group.options:
|
||||
n = option.names()
|
||||
a = option.attrs()
|
||||
arggroup.add_argument(*n, **a)
|
||||
# bash like autocompletion for dirs (appending '/')
|
||||
optparser.add_argument(FILE_OR_DIR, nargs="*").completer = filescompleter
|
||||
return optparser
|
||||
|
||||
def parse_setoption(self, args, option, namespace=None):
|
||||
parsedoption = self.parse(args, namespace=namespace)
|
||||
for name, value in parsedoption.__dict__.items():
|
||||
setattr(option, name, value)
|
||||
return getattr(parsedoption, FILE_OR_DIR)
|
||||
|
||||
def parse_known_args(self, args, namespace=None):
|
||||
"""parses and returns a namespace object with known arguments at this
|
||||
point.
|
||||
"""
|
||||
return self.parse_known_and_unknown_args(args, namespace=namespace)[0]
|
||||
|
||||
def parse_known_and_unknown_args(self, args, namespace=None):
|
||||
"""parses and returns a namespace object with known arguments, and
|
||||
the remaining arguments unknown at this point.
|
||||
"""
|
||||
optparser = self._getparser()
|
||||
args = [str(x) for x in args]
|
||||
return optparser.parse_known_args(args, namespace=namespace)
|
||||
|
||||
def addini(self, name, help, type=None, default=None):
|
||||
""" register an ini-file option.
|
||||
|
||||
:name: name of the ini-variable
|
||||
:type: type of the variable, can be ``pathlist``, ``args``, ``linelist``
|
||||
or ``bool``.
|
||||
:default: default value if no ini-file option exists but is queried.
|
||||
|
||||
The value of ini-variables can be retrieved via a call to
|
||||
:py:func:`config.getini(name) <_pytest.config.Config.getini>`.
|
||||
"""
|
||||
assert type in (None, "pathlist", "args", "linelist", "bool")
|
||||
self._inidict[name] = (help, type, default)
|
||||
self._ininames.append(name)
|
||||
|
||||
|
||||
class ArgumentError(Exception):
|
||||
"""
|
||||
Raised if an Argument instance is created with invalid or
|
||||
inconsistent arguments.
|
||||
"""
|
||||
|
||||
def __init__(self, msg, option):
|
||||
self.msg = msg
|
||||
self.option_id = str(option)
|
||||
|
||||
def __str__(self):
|
||||
if self.option_id:
|
||||
return "option %s: %s" % (self.option_id, self.msg)
|
||||
else:
|
||||
return self.msg
|
||||
|
||||
|
||||
class Argument(object):
|
||||
"""class that mimics the necessary behaviour of optparse.Option
|
||||
|
||||
its currently a least effort implementation
|
||||
and ignoring choices and integer prefixes
|
||||
https://docs.python.org/3/library/optparse.html#optparse-standard-option-types
|
||||
"""
|
||||
_typ_map = {"int": int, "string": str, "float": float, "complex": complex}
|
||||
|
||||
def __init__(self, *names, **attrs):
|
||||
"""store parms in private vars for use in add_argument"""
|
||||
self._attrs = attrs
|
||||
self._short_opts = []
|
||||
self._long_opts = []
|
||||
self.dest = attrs.get("dest")
|
||||
if "%default" in (attrs.get("help") or ""):
|
||||
warnings.warn(
|
||||
'pytest now uses argparse. "%default" should be'
|
||||
' changed to "%(default)s" ',
|
||||
DeprecationWarning,
|
||||
stacklevel=3,
|
||||
)
|
||||
try:
|
||||
typ = attrs["type"]
|
||||
except KeyError:
|
||||
pass
|
||||
else:
|
||||
# this might raise a keyerror as well, don't want to catch that
|
||||
if isinstance(typ, six.string_types):
|
||||
if typ == "choice":
|
||||
warnings.warn(
|
||||
"type argument to addoption() is a string %r."
|
||||
" For parsearg this is optional and when supplied"
|
||||
" should be a type."
|
||||
" (options: %s)" % (typ, names),
|
||||
DeprecationWarning,
|
||||
stacklevel=3,
|
||||
)
|
||||
# argparse expects a type here take it from
|
||||
# the type of the first element
|
||||
attrs["type"] = type(attrs["choices"][0])
|
||||
else:
|
||||
warnings.warn(
|
||||
"type argument to addoption() is a string %r."
|
||||
" For parsearg this should be a type."
|
||||
" (options: %s)" % (typ, names),
|
||||
DeprecationWarning,
|
||||
stacklevel=3,
|
||||
)
|
||||
attrs["type"] = Argument._typ_map[typ]
|
||||
# used in test_parseopt -> test_parse_defaultgetter
|
||||
self.type = attrs["type"]
|
||||
else:
|
||||
self.type = typ
|
||||
try:
|
||||
# attribute existence is tested in Config._processopt
|
||||
self.default = attrs["default"]
|
||||
except KeyError:
|
||||
pass
|
||||
self._set_opt_strings(names)
|
||||
if not self.dest:
|
||||
if self._long_opts:
|
||||
self.dest = self._long_opts[0][2:].replace("-", "_")
|
||||
else:
|
||||
try:
|
||||
self.dest = self._short_opts[0][1:]
|
||||
except IndexError:
|
||||
raise ArgumentError("need a long or short option", self)
|
||||
|
||||
def names(self):
|
||||
return self._short_opts + self._long_opts
|
||||
|
||||
def attrs(self):
|
||||
# update any attributes set by processopt
|
||||
attrs = "default dest help".split()
|
||||
if self.dest:
|
||||
attrs.append(self.dest)
|
||||
for attr in attrs:
|
||||
try:
|
||||
self._attrs[attr] = getattr(self, attr)
|
||||
except AttributeError:
|
||||
pass
|
||||
if self._attrs.get("help"):
|
||||
a = self._attrs["help"]
|
||||
a = a.replace("%default", "%(default)s")
|
||||
# a = a.replace('%prog', '%(prog)s')
|
||||
self._attrs["help"] = a
|
||||
return self._attrs
|
||||
|
||||
def _set_opt_strings(self, opts):
|
||||
"""directly from optparse
|
||||
|
||||
might not be necessary as this is passed to argparse later on"""
|
||||
for opt in opts:
|
||||
if len(opt) < 2:
|
||||
raise ArgumentError(
|
||||
"invalid option string %r: "
|
||||
"must be at least two characters long" % opt,
|
||||
self,
|
||||
)
|
||||
elif len(opt) == 2:
|
||||
if not (opt[0] == "-" and opt[1] != "-"):
|
||||
raise ArgumentError(
|
||||
"invalid short option string %r: "
|
||||
"must be of the form -x, (x any non-dash char)" % opt,
|
||||
self,
|
||||
)
|
||||
self._short_opts.append(opt)
|
||||
else:
|
||||
if not (opt[0:2] == "--" and opt[2] != "-"):
|
||||
raise ArgumentError(
|
||||
"invalid long option string %r: "
|
||||
"must start with --, followed by non-dash" % opt,
|
||||
self,
|
||||
)
|
||||
self._long_opts.append(opt)
|
||||
|
||||
def __repr__(self):
|
||||
args = []
|
||||
if self._short_opts:
|
||||
args += ["_short_opts: " + repr(self._short_opts)]
|
||||
if self._long_opts:
|
||||
args += ["_long_opts: " + repr(self._long_opts)]
|
||||
args += ["dest: " + repr(self.dest)]
|
||||
if hasattr(self, "type"):
|
||||
args += ["type: " + repr(self.type)]
|
||||
if hasattr(self, "default"):
|
||||
args += ["default: " + repr(self.default)]
|
||||
return "Argument({})".format(", ".join(args))
|
||||
|
||||
|
||||
class OptionGroup(object):
|
||||
|
||||
def __init__(self, name, description="", parser=None):
|
||||
self.name = name
|
||||
self.description = description
|
||||
self.options = []
|
||||
self.parser = parser
|
||||
|
||||
def addoption(self, *optnames, **attrs):
|
||||
""" add an option to this group.
|
||||
|
||||
if a shortened version of a long option is specified it will
|
||||
be suppressed in the help. addoption('--twowords', '--two-words')
|
||||
results in help showing '--two-words' only, but --twowords gets
|
||||
accepted **and** the automatic destination is in args.twowords
|
||||
"""
|
||||
conflict = set(optnames).intersection(
|
||||
name for opt in self.options for name in opt.names()
|
||||
)
|
||||
if conflict:
|
||||
raise ValueError("option names %s already added" % conflict)
|
||||
option = Argument(*optnames, **attrs)
|
||||
self._addoption_instance(option, shortupper=False)
|
||||
|
||||
def _addoption(self, *optnames, **attrs):
|
||||
option = Argument(*optnames, **attrs)
|
||||
self._addoption_instance(option, shortupper=True)
|
||||
|
||||
def _addoption_instance(self, option, shortupper=False):
|
||||
if not shortupper:
|
||||
for opt in option._short_opts:
|
||||
if opt[0] == "-" and opt[1].islower():
|
||||
raise ValueError("lowercase shortoptions reserved")
|
||||
if self.parser:
|
||||
self.parser.processoption(option)
|
||||
self.options.append(option)
|
||||
|
||||
|
||||
class MyOptionParser(argparse.ArgumentParser):
|
||||
|
||||
def __init__(self, parser, extra_info=None):
|
||||
if not extra_info:
|
||||
extra_info = {}
|
||||
self._parser = parser
|
||||
argparse.ArgumentParser.__init__(
|
||||
self,
|
||||
usage=parser._usage,
|
||||
add_help=False,
|
||||
formatter_class=DropShorterLongHelpFormatter,
|
||||
)
|
||||
# extra_info is a dict of (param -> value) to display if there's
|
||||
# an usage error to provide more contextual information to the user
|
||||
self.extra_info = extra_info
|
||||
|
||||
def parse_args(self, args=None, namespace=None):
|
||||
"""allow splitting of positional arguments"""
|
||||
args, argv = self.parse_known_args(args, namespace)
|
||||
if argv:
|
||||
for arg in argv:
|
||||
if arg and arg[0] == "-":
|
||||
lines = ["unrecognized arguments: %s" % (" ".join(argv))]
|
||||
for k, v in sorted(self.extra_info.items()):
|
||||
lines.append(" %s: %s" % (k, v))
|
||||
self.error("\n".join(lines))
|
||||
getattr(args, FILE_OR_DIR).extend(argv)
|
||||
return args
|
||||
|
||||
|
||||
class DropShorterLongHelpFormatter(argparse.HelpFormatter):
|
||||
"""shorten help for long options that differ only in extra hyphens
|
||||
|
||||
- collapse **long** options that are the same except for extra hyphens
|
||||
- special action attribute map_long_option allows surpressing additional
|
||||
long options
|
||||
- shortcut if there are only two options and one of them is a short one
|
||||
- cache result on action object as this is called at least 2 times
|
||||
"""
|
||||
|
||||
def _format_action_invocation(self, action):
|
||||
orgstr = argparse.HelpFormatter._format_action_invocation(self, action)
|
||||
if orgstr and orgstr[0] != "-": # only optional arguments
|
||||
return orgstr
|
||||
res = getattr(action, "_formatted_action_invocation", None)
|
||||
if res:
|
||||
return res
|
||||
options = orgstr.split(", ")
|
||||
if len(options) == 2 and (len(options[0]) == 2 or len(options[1]) == 2):
|
||||
# a shortcut for '-h, --help' or '--abc', '-a'
|
||||
action._formatted_action_invocation = orgstr
|
||||
return orgstr
|
||||
return_list = []
|
||||
option_map = getattr(action, "map_long_option", {})
|
||||
if option_map is None:
|
||||
option_map = {}
|
||||
short_long = {}
|
||||
for option in options:
|
||||
if len(option) == 2 or option[2] == " ":
|
||||
continue
|
||||
if not option.startswith("--"):
|
||||
raise ArgumentError(
|
||||
'long optional argument without "--": [%s]' % (option), self
|
||||
)
|
||||
xxoption = option[2:]
|
||||
if xxoption.split()[0] not in option_map:
|
||||
shortened = xxoption.replace("-", "")
|
||||
if (
|
||||
shortened not in short_long
|
||||
or len(short_long[shortened]) < len(xxoption)
|
||||
):
|
||||
short_long[shortened] = xxoption
|
||||
# now short_long has been filled out to the longest with dashes
|
||||
# **and** we keep the right option ordering from add_argument
|
||||
for option in options:
|
||||
if len(option) == 2 or option[2] == " ":
|
||||
return_list.append(option)
|
||||
if option[2:] == short_long.get(option.replace("-", "")):
|
||||
return_list.append(option.replace(" ", "=", 1))
|
||||
action._formatted_action_invocation = ", ".join(return_list)
|
||||
return action._formatted_action_invocation
|
||||
Loading…
Reference in New Issue