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Darwin/lib/python3.4/site-packages/pip/commands/freeze.py

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+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))