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Edit File : main_parser.py \| Size : 2.75 KB
"""A single place for constructing and exposing the main parser """ import os import sys from pip._internal.cli import cmdoptions from pip._internal.cli.parser import ( ConfigOptionParser, UpdatingDefaultsHelpFormatter, ) from pip._internal.commands import commands_dict, get_similar_commands from pip._internal.exceptions import CommandError from pip._internal.utils.misc import get_pip_version, get_prog from pip._internal.utils.typing import MYPY_CHECK_RUNNING if MYPY_CHECK_RUNNING: from typing import Tuple, List __all__ = ["create_main_parser", "parse_command"] def create_main_parser(): # type: () -> ConfigOptionParser """Creates and returns the main parser for pip's CLI """ parser_kw = { 'usage': '\n%prog <command> [options]', 'add_help_option': False, 'formatter': UpdatingDefaultsHelpFormatter(), 'name': 'global', 'prog': get_prog(), } parser = ConfigOptionParser(**parser_kw) parser.disable_interspersed_args() parser.version = get_pip_version() # add the general options gen_opts = cmdoptions.make_option_group(cmdoptions.general_group, parser) parser.add_option_group(gen_opts) # so the help formatter knows parser.main = True # type: ignore # create command listing for description description = [''] + [ '%-27s %s' % (name, command_info.summary) for name, command_info in commands_dict.items() ] parser.description = '\n'.join(description) return parser def parse_command(args): # type: (List[str]) -> Tuple[str, List[str]] parser = create_main_parser() # Note: parser calls disable_interspersed_args(), so the result of this # call is to split the initial args into the general options before the # subcommand and everything else. # For example: # args: ['--timeout=5', 'install', '--user', 'INITools'] # general_options: ['--timeout==5'] # args_else: ['install', '--user', 'INITools'] general_options, args_else = parser.parse_args(args) # --version if general_options.version: sys.stdout.write(parser.version) # type: ignore sys.stdout.write(os.linesep) sys.exit() # pip \|\| pip help -> print_help() if not args_else or (args_else[0] == 'help' and len(args_else) == 1): parser.print_help() sys.exit() # the subcommand name cmd_name = args_else[0] if cmd_name not in commands_dict: guess = get_similar_commands(cmd_name) msg = ['unknown command "%s"' % cmd_name] if guess: msg.append('maybe you meant "%s"' % guess) raise CommandError(' - '.join(msg)) # all the args without the subcommand cmd_args = args[:] cmd_args.remove(cmd_name) return cmd_name, cmd_args Back

Edit File : main_parser.py | Size : 2.75 KB

"""A single place for constructing and exposing the main parser
"""

import os
import sys

from pip._internal.cli import cmdoptions
from pip._internal.cli.parser import (
    ConfigOptionParser,
    UpdatingDefaultsHelpFormatter,
)
from pip._internal.commands import commands_dict, get_similar_commands
from pip._internal.exceptions import CommandError
from pip._internal.utils.misc import get_pip_version, get_prog
from pip._internal.utils.typing import MYPY_CHECK_RUNNING

if MYPY_CHECK_RUNNING:
    from typing import Tuple, List

__all__ = ["create_main_parser", "parse_command"]

def create_main_parser():
    # type: () -> ConfigOptionParser
    """Creates and returns the main parser for pip's CLI
    """

parser_kw = {
        'usage': '\n%prog <command> [options]',
        'add_help_option': False,
        'formatter': UpdatingDefaultsHelpFormatter(),
        'name': 'global',
        'prog': get_prog(),
    }

parser = ConfigOptionParser(**parser_kw)
    parser.disable_interspersed_args()

parser.version = get_pip_version()

# add the general options
    gen_opts = cmdoptions.make_option_group(cmdoptions.general_group, parser)
    parser.add_option_group(gen_opts)

# so the help formatter knows
    parser.main = True  # type: ignore

# create command listing for description
    description = [''] + [
        '%-27s %s' % (name, command_info.summary)
        for name, command_info in commands_dict.items()
    ]
    parser.description = '\n'.join(description)

return parser

def parse_command(args):
    # type: (List[str]) -> Tuple[str, List[str]]
    parser = create_main_parser()

# Note: parser calls disable_interspersed_args(), so the result of this
    # call is to split the initial args into the general options before the
    # subcommand and everything else.
    # For example:
    #  args: ['--timeout=5', 'install', '--user', 'INITools']
    #  general_options: ['--timeout==5']
    #  args_else: ['install', '--user', 'INITools']
    general_options, args_else = parser.parse_args(args)

# --version
    if general_options.version:
        sys.stdout.write(parser.version)  # type: ignore
        sys.stdout.write(os.linesep)
        sys.exit()

# pip || pip help -> print_help()
    if not args_else or (args_else[0] == 'help' and len(args_else) == 1):
        parser.print_help()
        sys.exit()

# the subcommand name
    cmd_name = args_else[0]

if cmd_name not in commands_dict:
        guess = get_similar_commands(cmd_name)

msg = ['unknown command "%s"' % cmd_name]
        if guess:
            msg.append('maybe you meant "%s"' % guess)

raise CommandError(' - '.join(msg))

# all the args without the subcommand
    cmd_args = args[:]
    cmd_args.remove(cmd_name)

return cmd_name, cmd_args

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