from __future__ import absolute_import import logging import tempfile import os.path from pip._vendor.six.moves.urllib import parse as urllib_parse from pip._vendor.six.moves.urllib import request as urllib_request from pip.utils import display_path, rmtree from pip.vcs import vcs, VersionControl urlsplit = urllib_parse.urlsplit urlunsplit = urllib_parse.urlunsplit logger = logging.getLogger(__name__) class Git(VersionControl): name = 'git' dirname = '.git' repo_name = 'clone' schemes = ( 'git', 'git+http', 'git+https', 'git+ssh', 'git+git', 'git+file', ) 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 + urllib_request.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 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 + '/' self.run_command( ['checkout-index', '-a', '-f', '--prefix', location], 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.warning( "Could not find a tag or branch '%s', assuming commit.", rev, ) return rev_options def switch(self, dest, url, rev_options): self.run_command(['config', 'remote.origin.url', url], cwd=dest) self.run_command(['checkout', '-q'] + rev_options, cwd=dest) self.update_submodules(dest) def update(self, dest, rev_options): # First fetch changes from the default remote self.run_command(['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, ) self.run_command(['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.info( 'Cloning %s%s to %s', url, rev_display, display_path(dest), ) self.run_command(['clone', '-q', url, 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]): self.run_command( ['checkout', '-q'] + rev_options, cwd=dest, ) #: repo may contain submodules self.update_submodules(dest) def get_url(self, location): url = self.run_command( ['config', 'remote.origin.url'], show_stdout=False, cwd=location) return url.strip() def get_revision(self, location): current_rev = self.run_command( ['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 = self.run_command(['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, we pick the first one # alphabetically names_by_commit = {} for ref, commit in sorted(refs.items()): if commit not in names_by_commit: names_by_commit[commit] = ref if current_rev in names_by_commit: # It's a tag or branch. name = names_by_commit[current_rev] full_egg_name = ( '%s-%s' % (egg_project_name, self.translate_egg_surname(name)) ) 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 'file:' not 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 self.run_command( ['submodule', 'update', '--init', '--recursive', '-q'], cwd=location, ) vcs.register(Git)