| from __future__ import absolute_import |
| |
| from pip.basecommand import Command, SUCCESS |
| from pip.exceptions import CommandError |
| |
| |
| class HelpCommand(Command): |
| """Show help for commands""" |
| name = 'help' |
| usage = """ |
| %prog <command>""" |
| summary = 'Show help for commands.' |
| |
| def run(self, options, args): |
| from pip.commands import commands_dict, get_similar_commands |
| |
| try: |
| # 'pip help' with no args is handled by pip.__init__.parseopt() |
| cmd_name = args[0] # the command we need help for |
| except IndexError: |
| return SUCCESS |
| |
| 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)) |
| |
| command = commands_dict[cmd_name]() |
| command.parser.print_help() |
| |
| return SUCCESS |
