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Editing: git.py
import tempfile import re import os.path from pip.util import call_subprocess from pip.util import display_path, rmtree from pip.vcs import vcs, VersionControl from pip.log import logger from pip.backwardcompat import url2pathname, urlparse urlsplit = urlparse.urlsplit urlunsplit = urlparse.urlunsplit class Git(VersionControl): name = 'git' dirname = '.git' repo_name = 'clone' schemes = ('git', 'git+http', 'git+https', 'git+ssh', 'git+git', 'git+file') bundle_file = 'git-clone.txt' guide = ('# This was a Git repo; to make it a repo again run:\n' 'git init\ngit remote add origin %(url)s -f\ngit checkout %(rev)s\n') def __init__(self, url=None, *args, **kwargs): # Works around an apparent Git bug # (see http://article.gmane.org/gmane.comp.version-control.git/146500) if url: scheme, netloc, path, query, fragment = urlsplit(url) if scheme.endswith('file'): initial_slashes = path[:-len(path.lstrip('/'))] newpath = initial_slashes + url2pathname(path).replace('\\', '/').lstrip('/') url = urlunsplit((scheme, netloc, newpath, query, fragment)) after_plus = scheme.find('+') + 1 url = scheme[:after_plus] + urlunsplit((scheme[after_plus:], netloc, newpath, query, fragment)) super(Git, self).__init__(url, *args, **kwargs) def parse_vcs_bundle_file(self, content): url = rev = None for line in content.splitlines(): if not line.strip() or line.strip().startswith('#'): continue url_match = re.search(r'git\s*remote\s*add\s*origin(.*)\s*-f', line) if url_match: url = url_match.group(1).strip() rev_match = re.search(r'^git\s*checkout\s*-q\s*(.*)\s*', line) if rev_match: rev = rev_match.group(1).strip() if url and rev: return url, rev return None, None def export(self, location): """Export the Git repository at the url to the destination location""" temp_dir = tempfile.mkdtemp('-export', 'pip-') self.unpack(temp_dir) try: if not location.endswith('/'): location = location + '/' call_subprocess( [self.cmd, 'checkout-index', '-a', '-f', '--prefix', location], filter_stdout=self._filter, show_stdout=False, cwd=temp_dir) finally: rmtree(temp_dir) def check_rev_options(self, rev, dest, rev_options): """Check the revision options before checkout to compensate that tags and branches may need origin/ as a prefix. Returns the SHA1 of the branch or tag if found. """ revisions = self.get_refs(dest) origin_rev = 'origin/%s' % rev if origin_rev in revisions: # remote branch return [revisions[origin_rev]] elif rev in revisions: # a local tag or branch name return [revisions[rev]] else: logger.warn("Could not find a tag or branch '%s', assuming commit." % rev) return rev_options def switch(self, dest, url, rev_options): call_subprocess( [self.cmd, 'config', 'remote.origin.url', url], cwd=dest) call_subprocess( [self.cmd, 'checkout', '-q'] + rev_options, cwd=dest) self.update_submodules(dest) def update(self, dest, rev_options): # First fetch changes from the default remote call_subprocess([self.cmd, 'fetch', '-q'], cwd=dest) # Then reset to wanted revision (maby even origin/master) if rev_options: rev_options = self.check_rev_options(rev_options[0], dest, rev_options) call_subprocess([self.cmd, 'reset', '--hard', '-q'] + rev_options, cwd=dest) #: update submodules self.update_submodules(dest) def obtain(self, dest): url, rev = self.get_url_rev() if rev: rev_options = [rev] rev_display = ' (to %s)' % rev else: rev_options = ['origin/master'] rev_display = '' if self.check_destination(dest, url, rev_options, rev_display): logger.notify('Cloning %s%s to %s' % (url, rev_display, display_path(dest))) call_subprocess([self.cmd, 'clone', '-q', url, dest]) #: repo may contain submodules self.update_submodules(dest) if rev: rev_options = self.check_rev_options(rev, dest, rev_options) # Only do a checkout if rev_options differs from HEAD if not self.get_revision(dest).startswith(rev_options[0]): call_subprocess([self.cmd, 'checkout', '-q'] + rev_options, cwd=dest) def get_url(self, location): url = call_subprocess( [self.cmd, 'config', 'remote.origin.url'], show_stdout=False, cwd=location) return url.strip() def get_revision(self, location): current_rev = call_subprocess( [self.cmd, 'rev-parse', 'HEAD'], show_stdout=False, cwd=location) return current_rev.strip() def get_refs(self, location): """Return map of named refs (branches or tags) to commit hashes.""" output = call_subprocess([self.cmd, 'show-ref'], show_stdout=False, cwd=location) rv = {} for line in output.strip().splitlines(): commit, ref = line.split(' ', 1) ref = ref.strip() ref_name = None if ref.startswith('refs/remotes/'): ref_name = ref[len('refs/remotes/'):] elif ref.startswith('refs/heads/'): ref_name = ref[len('refs/heads/'):] elif ref.startswith('refs/tags/'): ref_name = ref[len('refs/tags/'):] if ref_name is not None: rv[ref_name] = commit.strip() return rv def get_src_requirement(self, dist, location, find_tags): repo = self.get_url(location) if not repo.lower().startswith('git:'): repo = 'git+' + repo egg_project_name = dist.egg_name().split('-', 1)[0] if not repo: return None current_rev = self.get_revision(location) refs = self.get_refs(location) # refs maps names to commit hashes; we need the inverse # if multiple names map to a single commit, this arbitrarily picks one names_by_commit = dict((commit, ref) for ref, commit in refs.items()) if current_rev in names_by_commit: # It's a tag full_egg_name = '%s-%s' % (egg_project_name, names_by_commit[current_rev]) else: full_egg_name = '%s-dev' % egg_project_name return '%s@%s#egg=%s' % (repo, current_rev, full_egg_name) def get_url_rev(self): """ Prefixes stub URLs like 'user@hostname:user/repo.git' with 'ssh://'. That's required because although they use SSH they sometimes doesn't work with a ssh:// scheme (e.g. Github). But we need a scheme for parsing. Hence we remove it again afterwards and return it as a stub. """ if not '://' in self.url: assert not 'file:' in self.url self.url = self.url.replace('git+', 'git+ssh://') url, rev = super(Git, self).get_url_rev() url = url.replace('ssh://', '') else: url, rev = super(Git, self).get_url_rev() return url, rev def update_submodules(self, location): if not os.path.exists(os.path.join(location, '.gitmodules')): return call_subprocess([self.cmd, 'submodule', 'update', '--init', '--recursive', '-q'], cwd=location) vcs.register(Git)
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