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Editing: freeze.py
import re import sys import pip from pip.req import InstallRequirement from pip.log import logger from pip.basecommand import Command from pip.util import get_installed_distributions from pip._vendor import pkg_resources class FreezeCommand(Command): """Output installed packages in requirements format.""" name = 'freeze' usage = """ %prog [options]""" summary = 'Output installed packages in requirements format.' def __init__(self, *args, **kw): super(FreezeCommand, self).__init__(*args, **kw) self.cmd_opts.add_option( '-r', '--requirement', dest='requirement', action='store', default=None, metavar='file', help="Use the order in the given requirements file and it's comments when generating output.") self.cmd_opts.add_option( '-f', '--find-links', dest='find_links', action='append', default=[], metavar='URL', help='URL for finding packages, which will be added to the output.') self.cmd_opts.add_option( '-l', '--local', dest='local', action='store_true', default=False, help='If in a virtualenv that has global access, do not output globally-installed packages.') self.parser.insert_option_group(0, self.cmd_opts) def setup_logging(self): logger.move_stdout_to_stderr() def run(self, options, args): requirement = options.requirement find_links = options.find_links or [] local_only = options.local ## FIXME: Obviously this should be settable: find_tags = False skip_match = None skip_regex = options.skip_requirements_regex if skip_regex: skip_match = re.compile(skip_regex) dependency_links = [] f = sys.stdout for dist in pkg_resources.working_set: if dist.has_metadata('dependency_links.txt'): dependency_links.extend(dist.get_metadata_lines('dependency_links.txt')) for link in find_links: if '#egg=' in link: dependency_links.append(link) for link in find_links: f.write('-f %s\n' % link) installations = {} for dist in get_installed_distributions(local_only=local_only): req = pip.FrozenRequirement.from_dist(dist, dependency_links, find_tags=find_tags) installations[req.name] = req if requirement: req_f = open(requirement) for line in req_f: if not line.strip() or line.strip().startswith('#'): f.write(line) continue if skip_match and skip_match.search(line): f.write(line) continue elif line.startswith('-e') or line.startswith('--editable'): if line.startswith('-e'): line = line[2:].strip() else: line = line[len('--editable'):].strip().lstrip('=') line_req = InstallRequirement.from_editable(line, default_vcs=options.default_vcs) elif (line.startswith('-r') or line.startswith('--requirement') or line.startswith('-Z') or line.startswith('--always-unzip') or line.startswith('-f') or line.startswith('-i') or line.startswith('--extra-index-url') or line.startswith('--find-links') or line.startswith('--index-url')): f.write(line) continue else: line_req = InstallRequirement.from_line(line) if not line_req.name: logger.notify("Skipping line because it's not clear what it would install: %s" % line.strip()) logger.notify(" (add #egg=PackageName to the URL to avoid this warning)") continue if line_req.name not in installations: logger.warn("Requirement file contains %s, but that package is not installed" % line.strip()) continue f.write(str(installations[line_req.name])) del installations[line_req.name] f.write('## The following requirements were added by pip --freeze:\n') for installation in sorted(installations.values(), key=lambda x: x.name): f.write(str(installation))
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