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author | 2022-11-13 23:46:45 +0530 | |
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committer | 2022-11-13 23:46:45 +0530 | |
commit | 9468226a9e2e2ab8cdd599f1d8538e860ca86120 (patch) | |
tree | 0a77ada226d6db80639f96b438bf83e4e756edb5 /env/lib/python3.10/site-packages/pip/_internal/cli/main_parser.py | |
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Diffstat (limited to 'env/lib/python3.10/site-packages/pip/_internal/cli/main_parser.py')
-rw-r--r-- | env/lib/python3.10/site-packages/pip/_internal/cli/main_parser.py | 87 |
1 files changed, 87 insertions, 0 deletions
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 new file mode 100644 index 0000000..3666ab0 --- /dev/null +++ b/env/lib/python3.10/site-packages/pip/_internal/cli/main_parser.py @@ -0,0 +1,87 @@ +"""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 |