240 lines
8.3 KiB
Python
240 lines
8.3 KiB
Python
"""Base option parser setup"""
|
|
from __future__ import absolute_import
|
|
|
|
import logging
|
|
import optparse
|
|
import sys
|
|
import textwrap
|
|
from distutils.util import strtobool
|
|
|
|
from pip._vendor.six import string_types
|
|
|
|
from pip._internal.compat import get_terminal_size
|
|
from pip._internal.configuration import Configuration, ConfigurationError
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class PrettyHelpFormatter(optparse.IndentedHelpFormatter):
|
|
"""A prettier/less verbose help formatter for optparse."""
|
|
|
|
def __init__(self, *args, **kwargs):
|
|
# help position must be aligned with __init__.parseopts.description
|
|
kwargs['max_help_position'] = 30
|
|
kwargs['indent_increment'] = 1
|
|
kwargs['width'] = get_terminal_size()[0] - 2
|
|
optparse.IndentedHelpFormatter.__init__(self, *args, **kwargs)
|
|
|
|
def format_option_strings(self, option):
|
|
return self._format_option_strings(option, ' <%s>', ', ')
|
|
|
|
def _format_option_strings(self, option, mvarfmt=' <%s>', optsep=', '):
|
|
"""
|
|
Return a comma-separated list of option strings and metavars.
|
|
|
|
:param option: tuple of (short opt, long opt), e.g: ('-f', '--format')
|
|
:param mvarfmt: metavar format string - evaluated as mvarfmt % metavar
|
|
:param optsep: separator
|
|
"""
|
|
opts = []
|
|
|
|
if option._short_opts:
|
|
opts.append(option._short_opts[0])
|
|
if option._long_opts:
|
|
opts.append(option._long_opts[0])
|
|
if len(opts) > 1:
|
|
opts.insert(1, optsep)
|
|
|
|
if option.takes_value():
|
|
metavar = option.metavar or option.dest.lower()
|
|
opts.append(mvarfmt % metavar.lower())
|
|
|
|
return ''.join(opts)
|
|
|
|
def format_heading(self, heading):
|
|
if heading == 'Options':
|
|
return ''
|
|
return heading + ':\n'
|
|
|
|
def format_usage(self, usage):
|
|
"""
|
|
Ensure there is only one newline between usage and the first heading
|
|
if there is no description.
|
|
"""
|
|
msg = '\nUsage: %s\n' % self.indent_lines(textwrap.dedent(usage), " ")
|
|
return msg
|
|
|
|
def format_description(self, description):
|
|
# leave full control over description to us
|
|
if description:
|
|
if hasattr(self.parser, 'main'):
|
|
label = 'Commands'
|
|
else:
|
|
label = 'Description'
|
|
# some doc strings have initial newlines, some don't
|
|
description = description.lstrip('\n')
|
|
# some doc strings have final newlines and spaces, some don't
|
|
description = description.rstrip()
|
|
# dedent, then reindent
|
|
description = self.indent_lines(textwrap.dedent(description), " ")
|
|
description = '%s:\n%s\n' % (label, description)
|
|
return description
|
|
else:
|
|
return ''
|
|
|
|
def format_epilog(self, epilog):
|
|
# leave full control over epilog to us
|
|
if epilog:
|
|
return epilog
|
|
else:
|
|
return ''
|
|
|
|
def indent_lines(self, text, indent):
|
|
new_lines = [indent + line for line in text.split('\n')]
|
|
return "\n".join(new_lines)
|
|
|
|
|
|
class UpdatingDefaultsHelpFormatter(PrettyHelpFormatter):
|
|
"""Custom help formatter for use in ConfigOptionParser.
|
|
|
|
This is updates the defaults before expanding them, allowing
|
|
them to show up correctly in the help listing.
|
|
"""
|
|
|
|
def expand_default(self, option):
|
|
if self.parser is not None:
|
|
self.parser._update_defaults(self.parser.defaults)
|
|
return optparse.IndentedHelpFormatter.expand_default(self, option)
|
|
|
|
|
|
class CustomOptionParser(optparse.OptionParser):
|
|
|
|
def insert_option_group(self, idx, *args, **kwargs):
|
|
"""Insert an OptionGroup at a given position."""
|
|
group = self.add_option_group(*args, **kwargs)
|
|
|
|
self.option_groups.pop()
|
|
self.option_groups.insert(idx, group)
|
|
|
|
return group
|
|
|
|
@property
|
|
def option_list_all(self):
|
|
"""Get a list of all options, including those in option groups."""
|
|
res = self.option_list[:]
|
|
for i in self.option_groups:
|
|
res.extend(i.option_list)
|
|
|
|
return res
|
|
|
|
|
|
class ConfigOptionParser(CustomOptionParser):
|
|
"""Custom option parser which updates its defaults by checking the
|
|
configuration files and environmental variables"""
|
|
|
|
def __init__(self, *args, **kwargs):
|
|
self.name = kwargs.pop('name')
|
|
|
|
isolated = kwargs.pop("isolated", False)
|
|
self.config = Configuration(isolated)
|
|
|
|
assert self.name
|
|
optparse.OptionParser.__init__(self, *args, **kwargs)
|
|
|
|
def check_default(self, option, key, val):
|
|
try:
|
|
return option.check_value(key, val)
|
|
except optparse.OptionValueError as exc:
|
|
print("An error occurred during configuration: %s" % exc)
|
|
sys.exit(3)
|
|
|
|
def _get_ordered_configuration_items(self):
|
|
# Configuration gives keys in an unordered manner. Order them.
|
|
override_order = ["global", self.name, ":env:"]
|
|
|
|
# Pool the options into different groups
|
|
section_items = {name: [] for name in override_order}
|
|
for section_key, val in self.config.items():
|
|
# ignore empty values
|
|
if not val:
|
|
logger.debug(
|
|
"Ignoring configuration key '%s' as it's value is empty.",
|
|
section_key
|
|
)
|
|
continue
|
|
|
|
section, key = section_key.split(".", 1)
|
|
if section in override_order:
|
|
section_items[section].append((key, val))
|
|
|
|
# Yield each group in their override order
|
|
for section in override_order:
|
|
for key, val in section_items[section]:
|
|
yield key, val
|
|
|
|
def _update_defaults(self, defaults):
|
|
"""Updates the given defaults with values from the config files and
|
|
the environ. Does a little special handling for certain types of
|
|
options (lists)."""
|
|
|
|
# Accumulate complex default state.
|
|
self.values = optparse.Values(self.defaults)
|
|
late_eval = set()
|
|
# Then set the options with those values
|
|
for key, val in self._get_ordered_configuration_items():
|
|
# '--' because configuration supports only long names
|
|
option = self.get_option('--' + key)
|
|
|
|
# Ignore options not present in this parser. E.g. non-globals put
|
|
# in [global] by users that want them to apply to all applicable
|
|
# commands.
|
|
if option is None:
|
|
continue
|
|
|
|
if option.action in ('store_true', 'store_false', 'count'):
|
|
val = strtobool(val)
|
|
elif option.action == 'append':
|
|
val = val.split()
|
|
val = [self.check_default(option, key, v) for v in val]
|
|
elif option.action == 'callback':
|
|
late_eval.add(option.dest)
|
|
opt_str = option.get_opt_string()
|
|
val = option.convert_value(opt_str, val)
|
|
# From take_action
|
|
args = option.callback_args or ()
|
|
kwargs = option.callback_kwargs or {}
|
|
option.callback(option, opt_str, val, self, *args, **kwargs)
|
|
else:
|
|
val = self.check_default(option, key, val)
|
|
|
|
defaults[option.dest] = val
|
|
|
|
for key in late_eval:
|
|
defaults[key] = getattr(self.values, key)
|
|
self.values = None
|
|
return defaults
|
|
|
|
def get_default_values(self):
|
|
"""Overriding to make updating the defaults after instantiation of
|
|
the option parser possible, _update_defaults() does the dirty work."""
|
|
if not self.process_default_values:
|
|
# Old, pre-Optik 1.5 behaviour.
|
|
return optparse.Values(self.defaults)
|
|
|
|
# Load the configuration, or error out in case of an error
|
|
try:
|
|
self.config.load()
|
|
except ConfigurationError as err:
|
|
self.exit(2, err.args[0])
|
|
|
|
defaults = self._update_defaults(self.defaults.copy()) # ours
|
|
for option in self._get_all_options():
|
|
default = defaults.get(option.dest)
|
|
if isinstance(default, string_types):
|
|
opt_str = option.get_opt_string()
|
|
defaults[option.dest] = option.check_value(opt_str, default)
|
|
return optparse.Values(defaults)
|
|
|
|
def error(self, msg):
|
|
self.print_usage(sys.stderr)
|
|
self.exit(2, "%s\n" % msg)
|