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#!/usr/bin/env python
import os
import optparse
import subprocess
import sys
import re
import difflib
from pip.basecommand import command_dict, load_command, load_all_commands, command_names
from pip.baseparser import parser
from pip.exceptions import InstallationError
from pip.log import logger
from pip.util import get_installed_distributions
from pip.backwardcompat import walk_packages
def autocomplete():
"""Command and option completion for the main option parser (and options)
and its subcommands (and options).
Enable by sourcing one of the completion shell scripts (bash or zsh).
"""
# 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 = ''
load_all_commands()
subcommands = [cmd for cmd, cls in command_dict.items() if not cls.hidden]
options = []
# subcommand
try:
subcommand_name = [w for w in cwords if w in subcommands][0]
except IndexError:
subcommand_name = None
# 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 uninstall command
if subcommand_name == 'uninstall' and not current.startswith('-'):
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 = command_dict.get(subcommand_name)
options += [(opt.get_opt_string(), opt.nargs)
for opt in subcommand.parser.option_list
if opt.help != optparse.SUPPRESS_HELP]
# filter out previously specified options from available options
prev_opts = [x.split('=')[0] for x in cwords[1:cword-1]]
options = filter(lambda (x, v): x not in prev_opts, options)
# filter options by current input
options = [(k, v) for k, v in options if k.startswith(current)]
for option in options:
opt_label = option[0]
# append '=' to options which require args
if option[1]:
opt_label += '='
print opt_label
else:
# show options of main parser only when necessary
if current.startswith('-') or current.startswith('--'):
subcommands += [opt.get_opt_string()
for opt in parser.option_list
if opt.help != optparse.SUPPRESS_HELP]
print ' '.join(filter(lambda x: x.startswith(current), subcommands))
sys.exit(1)
def version_control():
# Import all the version control support modules:
from pip import vcs
for importer, modname, ispkg in \
walk_packages(path=vcs.__path__, prefix=vcs.__name__+'.'):
__import__(modname)
def main(initial_args=None):
if initial_args is None:
initial_args = sys.argv[1:]
autocomplete()
version_control()
options, args = parser.parse_args(initial_args)
if options.help and not args:
args = ['help']
if not args:
parser.error('You must give a command (use "pip help" to see a list of commands)')
command = args[0].lower()
load_command(command)
if command not in command_dict:
close_commands = difflib.get_close_matches(command, command_names())
if close_commands:
guess = close_commands[0]
if args[1:]:
guess = "%s %s" % (guess, " ".join(args[1:]))
else:
guess = 'install %s' % command
error_dict = {'arg': command, 'guess': guess,
'script': os.path.basename(sys.argv[0])}
parser.error('No command by the name %(script)s %(arg)s\n '
'(maybe you meant "%(script)s %(guess)s")' % error_dict)
command = command_dict[command]
return command.main(initial_args, args[1:], options)
############################################################
## Writing freeze files
class FrozenRequirement(object):
def __init__(self, name, req, editable, comments=()):
self.name = name
self.req = req
self.editable = editable
self.comments = comments
_rev_re = re.compile(r'-r(\d+)$')
_date_re = re.compile(r'-(20\d\d\d\d\d\d)$')
@classmethod
def from_dist(cls, dist, dependency_links, find_tags=False):
location = os.path.normcase(os.path.abspath(dist.location))
comments = []
from pip.vcs import vcs, get_src_requirement
if vcs.get_backend_name(location):
editable = True
req = get_src_requirement(dist, location, find_tags)
if req is None:
logger.warn('Could not determine repository location of %s' % location)
comments.append('## !! Could not determine repository location')
req = dist.as_requirement()
editable = False
else:
editable = False
req = dist.as_requirement()
specs = req.specs
assert len(specs) == 1 and specs[0][0] == '=='
version = specs[0][1]
ver_match = cls._rev_re.search(version)
date_match = cls._date_re.search(version)
if ver_match or date_match:
svn_backend = vcs.get_backend('svn')
if svn_backend:
svn_location = svn_backend(
).get_location(dist, dependency_links)
if not svn_location:
logger.warn(
'Warning: cannot find svn location for %s' % req)
comments.append('## FIXME: could not find svn URL in dependency_links for this package:')
else:
comments.append('# Installing as editable to satisfy requirement %s:' % req)
if ver_match:
rev = ver_match.group(1)
else:
rev = '{%s}' % date_match.group(1)
editable = True
req = '%s@%s#egg=%s' % (svn_location, rev, cls.egg_name(dist))
return cls(dist.project_name, req, editable, comments)
@staticmethod
def egg_name(dist):
name = dist.egg_name()
match = re.search(r'-py\d\.\d$', name)
if match:
name = name[:match.start()]
return name
def __str__(self):
req = self.req
if self.editable:
req = '-e %s' % req
return '\n'.join(list(self.comments)+[str(req)])+'\n'
############################################################
## Requirement files
def call_subprocess(cmd, show_stdout=True,
filter_stdout=None, cwd=None,
raise_on_returncode=True,
command_level=logger.DEBUG, command_desc=None,
extra_environ=None):
if command_desc is None:
cmd_parts = []
for part in cmd:
if ' ' in part or '\n' in part or '"' in part or "'" in part:
part = '"%s"' % part.replace('"', '\\"')
cmd_parts.append(part)
command_desc = ' '.join(cmd_parts)
if show_stdout:
stdout = None
else:
stdout = subprocess.PIPE
logger.log(command_level, "Running command %s" % command_desc)
env = os.environ.copy()
if extra_environ:
env.update(extra_environ)
try:
proc = subprocess.Popen(
cmd, stderr=subprocess.STDOUT, stdin=None, stdout=stdout,
cwd=cwd, env=env)
except Exception, e:
logger.fatal(
"Error %s while executing command %s" % (e, command_desc))
raise
all_output = []
if stdout is not None:
stdout = proc.stdout
while 1:
line = stdout.readline()
if not line:
break
line = line.rstrip()
all_output.append(line + '\n')
if filter_stdout:
level = filter_stdout(line)
if isinstance(level, tuple):
level, line = level
logger.log(level, line)
if not logger.stdout_level_matches(level):
logger.show_progress()
else:
logger.info(line)
else:
returned_stdout, returned_stderr = proc.communicate()
all_output = [returned_stdout or '']
proc.wait()
if proc.returncode:
if raise_on_returncode:
if all_output:
logger.notify('Complete output from command %s:' % command_desc)
logger.notify('\n'.join(all_output) + '\n----------------------------------------')
raise InstallationError(
"Command %s failed with error code %s"
% (command_desc, proc.returncode))
else:
logger.warn(
"Command %s had error code %s"
% (command_desc, proc.returncode))
if stdout is not None:
return ''.join(all_output)
if __name__ == '__main__':
exit = main()
if exit:
sys.exit(exit)
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