mirror of https://github.com/pypa/pip
110 lines
4.3 KiB
Python
110 lines
4.3 KiB
Python
import re
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import sys
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import pkg_resources
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import pip
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from pip.req import InstallRequirement
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from pip.log import logger
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from pip.basecommand import Command
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from pip.util import get_installed_distributions
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class FreezeCommand(Command):
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name = 'freeze'
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usage = '%prog [OPTIONS]'
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summary = 'Output all currently installed packages (exact versions) to stdout'
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def __init__(self):
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super(FreezeCommand, self).__init__()
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self.parser.add_option(
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'-r', '--requirement',
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dest='requirement',
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action='store',
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default=None,
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metavar='FILENAME',
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help='Use the given requirements file as a hint about how to generate the new frozen requirements')
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self.parser.add_option(
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'-f', '--find-links',
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dest='find_links',
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action='append',
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default=[],
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metavar='URL',
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help='URL for finding packages, which will be added to the frozen requirements file')
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self.parser.add_option(
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'-l', '--local',
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dest='local',
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action='store_true',
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default=False,
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help='If in a virtualenv, do not report globally-installed packages')
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def setup_logging(self):
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logger.move_stdout_to_stderr()
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def run(self, options, args):
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requirement = options.requirement
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find_links = options.find_links or []
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local_only = options.local
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## FIXME: Obviously this should be settable:
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find_tags = False
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skip_match = None
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skip_regex = options.skip_requirements_regex
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if skip_regex:
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skip_match = re.compile(skip_regex)
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dependency_links = []
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f = sys.stdout
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for dist in pkg_resources.working_set:
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if dist.has_metadata('dependency_links.txt'):
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dependency_links.extend(dist.get_metadata_lines('dependency_links.txt'))
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for link in find_links:
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if '#egg=' in link:
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dependency_links.append(link)
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for link in find_links:
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f.write('-f %s\n' % link)
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installations = {}
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for dist in get_installed_distributions(local_only=local_only):
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req = pip.FrozenRequirement.from_dist(dist, dependency_links, find_tags=find_tags)
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installations[req.name] = req
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if requirement:
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req_f = open(requirement)
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for line in req_f:
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if not line.strip() or line.strip().startswith('#'):
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f.write(line)
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continue
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if skip_match and skip_match.search(line):
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f.write(line)
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continue
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elif line.startswith('-e') or line.startswith('--editable'):
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if line.startswith('-e'):
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line = line[2:].strip()
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else:
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line = line[len('--editable'):].strip().lstrip('=')
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line_req = InstallRequirement.from_editable(line, default_vcs=options.default_vcs)
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elif (line.startswith('-r') or line.startswith('--requirement')
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or line.startswith('-Z') or line.startswith('--always-unzip')
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or line.startswith('-f') or line.startswith('-i')
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or line.startswith('--extra-index-url')):
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f.write(line)
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continue
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else:
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line_req = InstallRequirement.from_line(line)
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if not line_req.name:
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logger.notify("Skipping line because it's not clear what it would install: %s"
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% line.strip())
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logger.notify(" (add #egg=PackageName to the URL to avoid this warning)")
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continue
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if line_req.name not in installations:
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logger.warn("Requirement file contains %s, but that package is not installed"
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% line.strip())
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continue
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f.write(str(installations[line_req.name]))
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del installations[line_req.name]
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f.write('## The following requirements were added by pip --freeze:\n')
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for installation in sorted(installations.values(), key=lambda x: x.name):
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f.write(str(installation))
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FreezeCommand()
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