mirror of
https://github.com/pypa/pip
synced 2023-12-13 21:30:23 +01:00
203 lines
6.8 KiB
Python
203 lines
6.8 KiB
Python
"""Base Command class, and related routines"""
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from cStringIO import StringIO
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import getpass
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import os
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import socket
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import sys
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import traceback
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import time
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import urllib
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import urllib2
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from pip import commands
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from pip.log import logger
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from pip.baseparser import parser, ConfigOptionParser, UpdatingDefaultsHelpFormatter
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from pip.download import urlopen
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from pip.exceptions import BadCommand, InstallationError, UninstallationError
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from pip.venv import restart_in_venv
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from pip.backwardcompat import walk_packages
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__all__ = ['command_dict', 'Command', 'load_all_commands',
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'load_command', 'command_names']
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command_dict = {}
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# for backwards compatibiliy
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get_proxy = urlopen.get_proxy
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class Command(object):
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name = None
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usage = None
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hidden = False
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def __init__(self):
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assert self.name
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self.parser = ConfigOptionParser(
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usage=self.usage,
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prog='%s %s' % (sys.argv[0], self.name),
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version=parser.version,
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formatter=UpdatingDefaultsHelpFormatter(),
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name=self.name)
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for option in parser.option_list:
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if not option.dest or option.dest == 'help':
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# -h, --version, etc
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continue
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self.parser.add_option(option)
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command_dict[self.name] = self
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def merge_options(self, initial_options, options):
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# Make sure we have all global options carried over
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for attr in ['log', 'venv', 'proxy', 'venv_base', 'require_venv',
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'respect_venv', 'log_explicit_levels', 'log_file',
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'timeout', 'default_vcs', 'skip_requirements_regex',
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'no_input']:
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setattr(options, attr, getattr(initial_options, attr) or getattr(options, attr))
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options.quiet += initial_options.quiet
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options.verbose += initial_options.verbose
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def setup_logging(self):
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pass
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def main(self, complete_args, args, initial_options):
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options, args = self.parser.parse_args(args)
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self.merge_options(initial_options, options)
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level = 1 # Notify
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level += options.verbose
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level -= options.quiet
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level = logger.level_for_integer(4-level)
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complete_log = []
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logger.consumers.extend(
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[(level, sys.stdout),
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(logger.DEBUG, complete_log.append)])
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if options.log_explicit_levels:
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logger.explicit_levels = True
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self.setup_logging()
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if options.require_venv and not options.venv:
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# If a venv is required check if it can really be found
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if not os.environ.get('VIRTUAL_ENV'):
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logger.fatal('Could not find an activated virtualenv (required).')
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sys.exit(3)
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# Automatically install in currently activated venv if required
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options.respect_venv = True
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if args and args[-1] == '___VENV_RESTART___':
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## FIXME: We don't do anything this this value yet:
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args = args[:-2]
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options.venv = None
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else:
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# If given the option to respect the activated environment
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# check if no venv is given as a command line parameter
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if options.respect_venv and os.environ.get('VIRTUAL_ENV'):
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if options.venv and os.path.exists(options.venv):
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# Make sure command line venv and environmental are the same
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if (os.path.realpath(os.path.expanduser(options.venv)) !=
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os.path.realpath(os.environ.get('VIRTUAL_ENV'))):
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logger.fatal("Given virtualenv (%s) doesn't match "
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"currently activated virtualenv (%s)."
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% (options.venv, os.environ.get('VIRTUAL_ENV')))
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sys.exit(3)
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else:
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options.venv = os.environ.get('VIRTUAL_ENV')
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logger.info('Using already activated environment %s' % options.venv)
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if options.venv:
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logger.info('Running in environment %s' % options.venv)
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site_packages=False
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if options.site_packages:
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site_packages=True
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restart_in_venv(options.venv, options.venv_base, site_packages,
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complete_args)
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# restart_in_venv should actually never return, but for clarity...
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return
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## FIXME: not sure if this sure come before or after venv restart
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if options.log:
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log_fp = open_logfile(options.log, 'a')
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logger.consumers.append((logger.DEBUG, log_fp))
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else:
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log_fp = None
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socket.setdefaulttimeout(options.timeout or None)
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urlopen.setup(proxystr=options.proxy, prompting=not options.no_input)
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exit = 0
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try:
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self.run(options, args)
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except (InstallationError, UninstallationError), e:
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logger.fatal(str(e))
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logger.info('Exception information:\n%s' % format_exc())
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exit = 1
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except BadCommand, e:
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logger.fatal(str(e))
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logger.info('Exception information:\n%s' % format_exc())
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exit = 1
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except:
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logger.fatal('Exception:\n%s' % format_exc())
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exit = 2
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if log_fp is not None:
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log_fp.close()
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if exit:
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log_fn = options.log_file
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text = '\n'.join(complete_log)
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logger.fatal('Storing complete log in %s' % log_fn)
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log_fp = open_logfile(log_fn, 'w')
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log_fp.write(text)
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log_fp.close()
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return exit
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def format_exc(exc_info=None):
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if exc_info is None:
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exc_info = sys.exc_info()
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out = StringIO()
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traceback.print_exception(*exc_info, **dict(file=out))
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return out.getvalue()
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def open_logfile(filename, mode='a'):
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"""Open the named log file in append mode.
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If the file already exists, a separator will also be printed to
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the file to separate past activity from current activity.
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"""
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filename = os.path.expanduser(filename)
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filename = os.path.abspath(filename)
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dirname = os.path.dirname(filename)
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if not os.path.exists(dirname):
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os.makedirs(dirname)
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exists = os.path.exists(filename)
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log_fp = open(filename, mode)
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if exists:
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print >> log_fp, '-'*60
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print >> log_fp, '%s run on %s' % (sys.argv[0], time.strftime('%c'))
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return log_fp
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def load_command(name):
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full_name = 'pip.commands.%s' % name
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if full_name in sys.modules:
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return
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try:
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__import__(full_name)
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except ImportError:
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pass
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def load_all_commands():
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for name in command_names():
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load_command(name)
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def command_names():
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names = set((pkg[1] for pkg in walk_packages(path=commands.__path__)))
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return list(names)
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