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Edit File : autocompletion.py \| Size : 6.02 KB
"""Logic that powers autocompletion installed by ``pip completion``. """ # The following comment should be removed at some point in the future. # mypy: disallow-untyped-defs=False import optparse import os import sys from pip._internal.cli.main_parser import create_main_parser from pip._internal.commands import commands_dict, create_command from pip._internal.utils.misc import get_installed_distributions def autocomplete(): """Entry Point for completion of main and subcommand options. """ # Don't complete if user hasn't sourced bash_completion file. if 'PIP_AUTO_COMPLETE' not in os.environ: return cwords = os.environ['COMP_WORDS'].split()[1:] cword = int(os.environ['COMP_CWORD']) try: current = cwords[cword - 1] except IndexError: current = '' subcommands = list(commands_dict) options = [] # subcommand try: subcommand_name = [w for w in cwords if w in subcommands][0] except IndexError: subcommand_name = None parser = create_main_parser() # subcommand options if subcommand_name: # special case: 'help' subcommand has no options if subcommand_name == 'help': sys.exit(1) # special case: list locally installed dists for show and uninstall should_list_installed = ( subcommand_name in ['show', 'uninstall'] and not current.startswith('-') ) if should_list_installed: installed = [] lc = current.lower() for dist in get_installed_distributions(local_only=True): if dist.key.startswith(lc) and dist.key not in cwords[1:]: installed.append(dist.key) # if there are no dists installed, fall back to option completion if installed: for dist in installed: print(dist) sys.exit(1) subcommand = create_command(subcommand_name) for opt in subcommand.parser.option_list_all: if opt.help != optparse.SUPPRESS_HELP: for opt_str in opt._long_opts + opt._short_opts: options.append((opt_str, opt.nargs)) # filter out previously specified options from available options prev_opts = [x.split('=')[0] for x in cwords[1:cword - 1]] options = [(x, v) for (x, v) in options if x not in prev_opts] # filter options by current input options = [(k, v) for k, v in options if k.startswith(current)] # get completion type given cwords and available subcommand options completion_type = get_path_completion_type( cwords, cword, subcommand.parser.option_list_all, ) # get completion files and directories if ``completion_type`` is # ``<file>``, ``<dir>`` or ``<path>`` if completion_type: options = auto_complete_paths(current, completion_type) options = ((opt, 0) for opt in options) for option in options: opt_label = option[0] # append '=' to options which require args if option[1] and option[0][:2] == "--": opt_label += '=' print(opt_label) else: # show main parser options only when necessary opts = [i.option_list for i in parser.option_groups] opts.append(parser.option_list) opts = (o for it in opts for o in it) if current.startswith('-'): for opt in opts: if opt.help != optparse.SUPPRESS_HELP: subcommands += opt._long_opts + opt._short_opts else: # get completion type given cwords and all available options completion_type = get_path_completion_type(cwords, cword, opts) if completion_type: subcommands = auto_complete_paths(current, completion_type) print(' '.join([x for x in subcommands if x.startswith(current)])) sys.exit(1) def get_path_completion_type(cwords, cword, opts): """Get the type of path completion (``file``, ``dir``, ``path`` or None) :param cwords: same as the environmental variable ``COMP_WORDS`` :param cword: same as the environmental variable ``COMP_CWORD`` :param opts: The available options to check :return: path completion type (``file``, ``dir``, ``path`` or None) """ if cword < 2 or not cwords[cword - 2].startswith('-'): return for opt in opts: if opt.help == optparse.SUPPRESS_HELP: continue for o in str(opt).split('/'): if cwords[cword - 2].split('=')[0] == o: if not opt.metavar or any( x in ('path', 'file', 'dir') for x in opt.metavar.split('/')): return opt.metavar def auto_complete_paths(current, completion_type): """If ``completion_type`` is ``file`` or ``path``, list all regular files and directories starting with ``current``; otherwise only list directories starting with ``current``. :param current: The word to be completed :param completion_type: path completion type(`file`, `path` or `dir`)i :return: A generator of regular files and/or directories """ directory, filename = os.path.split(current) current_path = os.path.abspath(directory) # Don't complete paths if they can't be accessed if not os.access(current_path, os.R_OK): return filename = os.path.normcase(filename) # list all files that start with ``filename`` file_list = (x for x in os.listdir(current_path) if os.path.normcase(x).startswith(filename)) for f in file_list: opt = os.path.join(current_path, f) comp_file = os.path.normcase(os.path.join(directory, f)) # complete regular files when there is not ``<dir>`` after option # complete directories when there is ``<file>``, ``<path>`` or # ``<dir>``after option if completion_type != 'dir' and os.path.isfile(opt): yield comp_file elif os.path.isdir(opt): yield os.path.join(comp_file, '') Back

Edit File : autocompletion.py | Size : 6.02 KB

"""Logic that powers autocompletion installed by ``pip completion``.
"""

# The following comment should be removed at some point in the future.
# mypy: disallow-untyped-defs=False

import optparse
import os
import sys

from pip._internal.cli.main_parser import create_main_parser
from pip._internal.commands import commands_dict, create_command
from pip._internal.utils.misc import get_installed_distributions

def autocomplete():
    """Entry Point for completion of main and subcommand options.
    """
    # Don't complete if user hasn't sourced bash_completion file.
    if 'PIP_AUTO_COMPLETE' not in os.environ:
        return
    cwords = os.environ['COMP_WORDS'].split()[1:]
    cword = int(os.environ['COMP_CWORD'])
    try:
        current = cwords[cword - 1]
    except IndexError:
        current = ''

subcommands = list(commands_dict)
    options = []
    # subcommand
    try:
        subcommand_name = [w for w in cwords if w in subcommands][0]
    except IndexError:
        subcommand_name = None

parser = create_main_parser()
    # subcommand options
    if subcommand_name:
        # special case: 'help' subcommand has no options
        if subcommand_name == 'help':
            sys.exit(1)
        # special case: list locally installed dists for show and uninstall
        should_list_installed = (
            subcommand_name in ['show', 'uninstall'] and
            not current.startswith('-')
        )
        if should_list_installed:
            installed = []
            lc = current.lower()
            for dist in get_installed_distributions(local_only=True):
                if dist.key.startswith(lc) and dist.key not in cwords[1:]:
                    installed.append(dist.key)
            # if there are no dists installed, fall back to option completion
            if installed:
                for dist in installed:
                    print(dist)
                sys.exit(1)

subcommand = create_command(subcommand_name)

for opt in subcommand.parser.option_list_all:
            if opt.help != optparse.SUPPRESS_HELP:
                for opt_str in opt._long_opts + opt._short_opts:
                    options.append((opt_str, opt.nargs))

# filter out previously specified options from available options
        prev_opts = [x.split('=')[0] for x in cwords[1:cword - 1]]
        options = [(x, v) for (x, v) in options if x not in prev_opts]
        # filter options by current input
        options = [(k, v) for k, v in options if k.startswith(current)]
        # get completion type given cwords and available subcommand options
        completion_type = get_path_completion_type(
            cwords, cword, subcommand.parser.option_list_all,
        )
        # get completion files and directories if ``completion_type`` is
        # ``<file>``, ``<dir>`` or ``<path>``
        if completion_type:
            options = auto_complete_paths(current, completion_type)
            options = ((opt, 0) for opt in options)
        for option in options:
            opt_label = option[0]
            # append '=' to options which require args
            if option[1] and option[0][:2] == "--":
                opt_label += '='
            print(opt_label)
    else:
        # show main parser options only when necessary

opts = [i.option_list for i in parser.option_groups]
        opts.append(parser.option_list)
        opts = (o for it in opts for o in it)
        if current.startswith('-'):
            for opt in opts:
                if opt.help != optparse.SUPPRESS_HELP:
                    subcommands += opt._long_opts + opt._short_opts
        else:
            # get completion type given cwords and all available options
            completion_type = get_path_completion_type(cwords, cword, opts)
            if completion_type:
                subcommands = auto_complete_paths(current, completion_type)

print(' '.join([x for x in subcommands if x.startswith(current)]))
    sys.exit(1)

def get_path_completion_type(cwords, cword, opts):
    """Get the type of path completion (``file``, ``dir``, ``path`` or None)

:param cwords: same as the environmental variable ``COMP_WORDS``
    :param cword: same as the environmental variable ``COMP_CWORD``
    :param opts: The available options to check
    :return: path completion type (``file``, ``dir``, ``path`` or None)
    """
    if cword < 2 or not cwords[cword - 2].startswith('-'):
        return
    for opt in opts:
        if opt.help == optparse.SUPPRESS_HELP:
            continue
        for o in str(opt).split('/'):
            if cwords[cword - 2].split('=')[0] == o:
                if not opt.metavar or any(
                        x in ('path', 'file', 'dir')
                        for x in opt.metavar.split('/')):
                    return opt.metavar

def auto_complete_paths(current, completion_type):
    """If ``completion_type`` is ``file`` or ``path``, list all regular files
    and directories starting with ``current``; otherwise only list directories
    starting with ``current``.

:param current: The word to be completed
    :param completion_type: path completion type(`file`, `path` or `dir`)i
    :return: A generator of regular files and/or directories
    """
    directory, filename = os.path.split(current)
    current_path = os.path.abspath(directory)
    # Don't complete paths if they can't be accessed
    if not os.access(current_path, os.R_OK):
        return
    filename = os.path.normcase(filename)
    # list all files that start with ``filename``
    file_list = (x for x in os.listdir(current_path)
                 if os.path.normcase(x).startswith(filename))
    for f in file_list:
        opt = os.path.join(current_path, f)
        comp_file = os.path.normcase(os.path.join(directory, f))
        # complete regular files when there is not ``<dir>`` after option
        # complete directories when there is ``<file>``, ``<path>`` or
        # ``<dir>``after option
        if completion_type != 'dir' and os.path.isfile(opt):
            yield comp_file
        elif os.path.isdir(opt):
            yield os.path.join(comp_file, '')

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