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authorLibravatarLibravatar Biswakalyan Bhuyan <biswa@surgot.in> 2022-11-13 23:46:45 +0530
committerLibravatarLibravatar Biswakalyan Bhuyan <biswa@surgot.in> 2022-11-13 23:46:45 +0530
commit9468226a9e2e2ab8cdd599f1d8538e860ca86120 (patch)
tree0a77ada226d6db80639f96b438bf83e4e756edb5 /env/lib/python3.10/site-packages/pip/_internal/cli/main_parser.py
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diff --git a/env/lib/python3.10/site-packages/pip/_internal/cli/main_parser.py b/env/lib/python3.10/site-packages/pip/_internal/cli/main_parser.py
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+"""A single place for constructing and exposing the main parser
+"""
+
+import os
+import sys
+from typing import List, Tuple
+
+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
+
+__all__ = ["create_main_parser", "parse_command"]
+
+
+def create_main_parser() -> ConfigOptionParser:
+ """Creates and returns the main parser for pip's CLI"""
+
+ parser = ConfigOptionParser(
+ usage="\n%prog <command> [options]",
+ add_help_option=False,
+ formatter=UpdatingDefaultsHelpFormatter(),
+ name="global",
+ prog=get_prog(),
+ )
+ 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 = [""] + [
+ f"{name:27} {command_info.summary}"
+ for name, command_info in commands_dict.items()
+ ]
+ parser.description = "\n".join(description)
+
+ return parser
+
+
+def parse_command(args: 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)
+ 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 = [f'unknown command "{cmd_name}"']
+ if guess:
+ msg.append(f'maybe you meant "{guess}"')
+
+ raise CommandError(" - ".join(msg))
+
+ # all the args without the subcommand
+ cmd_args = args[:]
+ cmd_args.remove(cmd_name)
+
+ return cmd_name, cmd_args