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# -*- coding: utf-8 -*-
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"""
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vcs.backends.git
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~~~~~~~~~~~~~~~~
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Git backend implementation.
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:created_on: Apr 8, 2010
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:copyright: (c) 2010-2011 by Marcin Kuzminski, Lukasz Balcerzak.
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"""
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import os
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import re
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import time
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import posixpath
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from dulwich.repo import Repo, NotGitRepository
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#from dulwich.config import ConfigFile
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from string import Template
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from subprocess import Popen, PIPE
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from rhodecode.lib.vcs.backends.base import BaseRepository
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from rhodecode.lib.vcs.exceptions import BranchDoesNotExistError
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from rhodecode.lib.vcs.exceptions import ChangesetDoesNotExistError
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from rhodecode.lib.vcs.exceptions import EmptyRepositoryError
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from rhodecode.lib.vcs.exceptions import RepositoryError
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from rhodecode.lib.vcs.exceptions import TagAlreadyExistError
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from rhodecode.lib.vcs.exceptions import TagDoesNotExistError
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from rhodecode.lib.vcs.utils import safe_unicode, makedate, date_fromtimestamp
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from rhodecode.lib.vcs.utils.lazy import LazyProperty
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from rhodecode.lib.vcs.utils.ordered_dict import OrderedDict
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from rhodecode.lib.vcs.utils.paths import abspath
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from rhodecode.lib.vcs.utils.paths import get_user_home
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from .workdir import GitWorkdir
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from .changeset import GitChangeset
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from .inmemory import GitInMemoryChangeset
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from .config import ConfigFile
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class GitRepository(BaseRepository):
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"""
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Git repository backend.
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"""
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DEFAULT_BRANCH_NAME = 'master'
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scm = 'git'
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def __init__(self, repo_path, create=False, src_url=None,
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update_after_clone=False, bare=False):
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self.path = abspath(repo_path)
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self._repo = self._get_repo(create, src_url, update_after_clone, bare)
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try:
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self.head = self._repo.head()
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except KeyError:
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self.head = None
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self._config_files = [
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bare and abspath(self.path, 'config') or abspath(self.path, '.git',
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'config'),
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abspath(get_user_home(), '.gitconfig'),
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]
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@LazyProperty
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def revisions(self):
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"""
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Returns list of revisions' ids, in ascending order. Being lazy
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attribute allows external tools to inject shas from cache.
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"""
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return self._get_all_revisions()
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def run_git_command(self, cmd):
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"""
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Runs given ``cmd`` as git command and returns tuple
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(returncode, stdout, stderr).
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.. note::
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This method exists only until log/blame functionality is implemented
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at Dulwich (see https://bugs.launchpad.net/bugs/645142). Parsing
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os command's output is road to hell...
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:param cmd: git command to be executed
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"""
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#cmd = '(cd %s && git %s)' % (self.path, cmd)
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if isinstance(cmd, basestring):
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cmd = 'git %s' % cmd
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else:
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cmd = ['git'] + cmd
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try:
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opts = dict(
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shell=isinstance(cmd, basestring),
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stdout=PIPE,
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stderr=PIPE)
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if os.path.isdir(self.path):
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opts['cwd'] = self.path
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p = Popen(cmd, **opts)
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except OSError, err:
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raise RepositoryError("Couldn't run git command (%s).\n"
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"Original error was:%s" % (cmd, err))
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so, se = p.communicate()
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if not se.startswith("fatal: bad default revision 'HEAD'") and \
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p.returncode != 0:
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raise RepositoryError("Couldn't run git command (%s).\n"
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"stderr:\n%s" % (cmd, se))
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return so, se
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def _check_url(self, url):
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"""
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Functon will check given url and try to verify if it's a valid
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link. Sometimes it may happened that mercurial will issue basic
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auth request that can cause whole API to hang when used from python
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or other external calls.
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On failures it'll raise urllib2.HTTPError
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"""
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#TODO: implement this
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pass
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def _get_repo(self, create, src_url=None, update_after_clone=False,
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bare=False):
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if create and os.path.exists(self.path):
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raise RepositoryError("Location already exist")
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if src_url and not create:
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raise RepositoryError("Create should be set to True if src_url is "
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"given (clone operation creates repository)")
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try:
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if create and src_url:
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self._check_url(src_url)
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self.clone(src_url, update_after_clone, bare)
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return Repo(self.path)
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elif create:
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os.mkdir(self.path)
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if bare:
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return Repo.init_bare(self.path)
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else:
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return Repo.init(self.path)
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else:
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return Repo(self.path)
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except (NotGitRepository, OSError), err:
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raise RepositoryError(err)
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def _get_all_revisions(self):
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cmd = 'rev-list --all --date-order'
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try:
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so, se = self.run_git_command(cmd)
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except RepositoryError:
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# Can be raised for empty repositories
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return []
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revisions = so.splitlines()
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revisions.reverse()
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return revisions
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def _get_revision(self, revision):
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"""
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For git backend we always return integer here. This way we ensure
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that changset's revision attribute would become integer.
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"""
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pattern = re.compile(r'^[[0-9a-fA-F]{12}|[0-9a-fA-F]{40}]$')
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is_bstr = lambda o: isinstance(o, (str, unicode))
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is_null = lambda o: len(o) == revision.count('0')
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if len(self.revisions) == 0:
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raise EmptyRepositoryError("There are no changesets yet")
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if revision in (None, '', 'tip', 'HEAD', 'head', -1):
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revision = self.revisions[-1]
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if ((is_bstr(revision) and revision.isdigit() and len(revision) < 12)
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or isinstance(revision, int) or is_null(revision)):
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try:
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revision = self.revisions[int(revision)]
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except:
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raise ChangesetDoesNotExistError("Revision %r does not exist "
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"for this repository %s" % (revision, self))
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elif is_bstr(revision):
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if not pattern.match(revision) or revision not in self.revisions:
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raise ChangesetDoesNotExistError("Revision %r does not exist "
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"for this repository %s" % (revision, self))
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# Ensure we return full id
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if not pattern.match(str(revision)):
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raise ChangesetDoesNotExistError("Given revision %r not recognized"
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% revision)
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return revision
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def _get_archives(self, archive_name='tip'):
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for i in [('zip', '.zip'), ('gz', '.tar.gz'), ('bz2', '.tar.bz2')]:
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yield {"type": i[0], "extension": i[1], "node": archive_name}
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def _get_url(self, url):
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"""
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Returns normalized url. If schema is not given, would fall to
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filesystem (``file:///``) schema.
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"""
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url = str(url)
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if url != 'default' and not '://' in url:
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url = ':///'.join(('file', url))
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return url
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@LazyProperty
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def name(self):
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return os.path.basename(self.path)
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@LazyProperty
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def last_change(self):
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"""
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Returns last change made on this repository as datetime object
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"""
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return date_fromtimestamp(self._get_mtime(), makedate()[1])
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def _get_mtime(self):
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try:
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return time.mktime(self.get_changeset().date.timetuple())
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except RepositoryError:
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# fallback to filesystem
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in_path = os.path.join(self.path, '.git', "index")
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he_path = os.path.join(self.path, '.git', "HEAD")
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if os.path.exists(in_path):
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return os.stat(in_path).st_mtime
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else:
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return os.stat(he_path).st_mtime
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@LazyProperty
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def description(self):
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undefined_description = u'unknown'
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description_path = os.path.join(self.path, '.git', 'description')
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if os.path.isfile(description_path):
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return safe_unicode(open(description_path).read())
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else:
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return undefined_description
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@LazyProperty
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def contact(self):
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undefined_contact = u'Unknown'
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return undefined_contact
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@property
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def branches(self):
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if not self.revisions:
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return {}
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refs = self._repo.refs.as_dict()
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sortkey = lambda ctx: ctx[0]
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_branches = [('/'.join(ref.split('/')[2:]), head)
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for ref, head in refs.items()
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if ref.startswith('refs/heads/') and not ref.endswith('/HEAD')]
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return OrderedDict(sorted(_branches, key=sortkey, reverse=False))
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def _get_tags(self):
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if not self.revisions:
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return {}
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sortkey = lambda ctx: ctx[0]
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_tags = [('/'.join(ref.split('/')[2:]), head) for ref, head in
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self._repo.get_refs().items() if ref.startswith('refs/tags/')]
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return OrderedDict(sorted(_tags, key=sortkey, reverse=True))
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@LazyProperty
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def tags(self):
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return self._get_tags()
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def tag(self, name, user, revision=None, message=None, date=None,
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**kwargs):
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"""
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Creates and returns a tag for the given ``revision``.
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:param name: name for new tag
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:param user: full username, i.e.: "Joe Doe <joe.doe@example.com>"
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:param revision: changeset id for which new tag would be created
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:param message: message of the tag's commit
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:param date: date of tag's commit
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:raises TagAlreadyExistError: if tag with same name already exists
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"""
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if name in self.tags:
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raise TagAlreadyExistError("Tag %s already exists" % name)
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changeset = self.get_changeset(revision)
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message = message or "Added tag %s for commit %s" % (name,
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changeset.raw_id)
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self._repo.refs["refs/tags/%s" % name] = changeset._commit.id
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self.tags = self._get_tags()
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return changeset
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def remove_tag(self, name, user, message=None, date=None):
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"""
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Removes tag with the given ``name``.
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:param name: name of the tag to be removed
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:param user: full username, i.e.: "Joe Doe <joe.doe@example.com>"
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:param message: message of the tag's removal commit
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:param date: date of tag's removal commit
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:raises TagDoesNotExistError: if tag with given name does not exists
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"""
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if name not in self.tags:
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raise TagDoesNotExistError("Tag %s does not exist" % name)
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tagpath = posixpath.join(self._repo.refs.path, 'refs', 'tags', name)
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try:
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os.remove(tagpath)
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self.tags = self._get_tags()
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except OSError, e:
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raise RepositoryError(e.strerror)
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def get_changeset(self, revision=None):
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"""
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Returns ``GitChangeset`` object representing commit from git repository
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at the given revision or head (most recent commit) if None given.
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"""
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if isinstance(revision, GitChangeset):
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return revision
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revision = self._get_revision(revision)
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changeset = GitChangeset(repository=self, revision=revision)
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return changeset
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def get_changesets(self, start=None, end=None, start_date=None,
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end_date=None, branch_name=None, reverse=False):
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"""
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Returns iterator of ``GitChangeset`` objects from start to end (both
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are inclusive), in ascending date order (unless ``reverse`` is set).
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:param start: changeset ID, as str; first returned changeset
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:param end: changeset ID, as str; last returned changeset
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:param start_date: if specified, changesets with commit date less than
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``start_date`` would be filtered out from returned set
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:param end_date: if specified, changesets with commit date greater than
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``end_date`` would be filtered out from returned set
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:param branch_name: if specified, changesets not reachable from given
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branch would be filtered out from returned set
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:param reverse: if ``True``, returned generator would be reversed
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(meaning that returned changesets would have descending date order)
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:raise BranchDoesNotExistError: If given ``branch_name`` does not
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exist.
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:raise ChangesetDoesNotExistError: If changeset for given ``start`` or
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``end`` could not be found.
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"""
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if branch_name and branch_name not in self.branches:
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raise BranchDoesNotExistError("Branch '%s' not found" \
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% branch_name)
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# %H at format means (full) commit hash, initial hashes are retrieved
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# in ascending date order
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cmd_template = 'log --date-order --reverse --pretty=format:"%H"'
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cmd_params = {}
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if start_date:
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cmd_template += ' --since "$since"'
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cmd_params['since'] = start_date.strftime('%m/%d/%y %H:%M:%S')
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if end_date:
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cmd_template += ' --until "$until"'
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cmd_params['until'] = end_date.strftime('%m/%d/%y %H:%M:%S')
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if branch_name:
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cmd_template += ' $branch_name'
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cmd_params['branch_name'] = branch_name
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else:
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cmd_template += ' --all'
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cmd = Template(cmd_template).safe_substitute(**cmd_params)
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revs = self.run_git_command(cmd)[0].splitlines()
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start_pos = 0
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end_pos = len(revs)
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if start:
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_start = self._get_revision(start)
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try:
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start_pos = revs.index(_start)
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except ValueError:
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pass
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if end is not None:
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_end = self._get_revision(end)
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try:
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end_pos = revs.index(_end)
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except ValueError:
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pass
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if None not in [start, end] and start_pos > end_pos:
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raise RepositoryError('start cannot be after end')
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if end_pos is not None:
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end_pos += 1
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revs = revs[start_pos:end_pos]
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if reverse:
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revs = reversed(revs)
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for rev in revs:
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yield self.get_changeset(rev)
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def get_diff(self, rev1, rev2, path=None, ignore_whitespace=False,
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context=3):
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"""
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|
Returns (git like) *diff*, as plain text. Shows changes introduced by
|
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``rev2`` since ``rev1``.
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:param rev1: Entry point from which diff is shown. Can be
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``self.EMPTY_CHANGESET`` - in this case, patch showing all
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the changes since empty state of the repository until ``rev2``
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:param rev2: Until which revision changes should be shown.
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:param ignore_whitespace: If set to ``True``, would not show whitespace
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changes. Defaults to ``False``.
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:param context: How many lines before/after changed lines should be
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shown. Defaults to ``3``.
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"""
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flags = ['-U%s' % context]
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|
if ignore_whitespace:
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flags.append('-w')
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if rev1 == self.EMPTY_CHANGESET:
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rev2 = self.get_changeset(rev2).raw_id
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cmd = ' '.join(['show'] + flags + [rev2])
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else:
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rev1 = self.get_changeset(rev1).raw_id
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rev2 = self.get_changeset(rev2).raw_id
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cmd = ' '.join(['diff'] + flags + [rev1, rev2])
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if path:
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cmd += ' -- "%s"' % path
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stdout, stderr = self.run_git_command(cmd)
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# If we used 'show' command, strip first few lines (until actual diff
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# starts)
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|
if rev1 == self.EMPTY_CHANGESET:
|
|
|
lines = stdout.splitlines()
|
|
|
x = 0
|
|
|
for line in lines:
|
|
|
if line.startswith('diff'):
|
|
|
break
|
|
|
x += 1
|
|
|
# Append new line just like 'diff' command do
|
|
|
stdout = '\n'.join(lines[x:]) + '\n'
|
|
|
return stdout
|
|
|
|
|
|
@LazyProperty
|
|
|
def in_memory_changeset(self):
|
|
|
"""
|
|
|
Returns ``GitInMemoryChangeset`` object for this repository.
|
|
|
"""
|
|
|
return GitInMemoryChangeset(self)
|
|
|
|
|
|
def clone(self, url, update_after_clone=True, bare=False):
|
|
|
"""
|
|
|
Tries to clone changes from external location.
|
|
|
|
|
|
:param update_after_clone: If set to ``False``, git won't checkout
|
|
|
working directory
|
|
|
:param bare: If set to ``True``, repository would be cloned into
|
|
|
*bare* git repository (no working directory at all).
|
|
|
"""
|
|
|
url = self._get_url(url)
|
|
|
cmd = ['clone']
|
|
|
if bare:
|
|
|
cmd.append('--bare')
|
|
|
elif not update_after_clone:
|
|
|
cmd.append('--no-checkout')
|
|
|
cmd += ['--', '"%s"' % url, '"%s"' % self.path]
|
|
|
cmd = ' '.join(cmd)
|
|
|
# If error occurs run_git_command raises RepositoryError already
|
|
|
self.run_git_command(cmd)
|
|
|
|
|
|
@LazyProperty
|
|
|
def workdir(self):
|
|
|
"""
|
|
|
Returns ``Workdir`` instance for this repository.
|
|
|
"""
|
|
|
return GitWorkdir(self)
|
|
|
|
|
|
def get_config_value(self, section, name, config_file=None):
|
|
|
"""
|
|
|
Returns configuration value for a given [``section``] and ``name``.
|
|
|
|
|
|
:param section: Section we want to retrieve value from
|
|
|
:param name: Name of configuration we want to retrieve
|
|
|
:param config_file: A path to file which should be used to retrieve
|
|
|
configuration from (might also be a list of file paths)
|
|
|
"""
|
|
|
if config_file is None:
|
|
|
config_file = []
|
|
|
elif isinstance(config_file, basestring):
|
|
|
config_file = [config_file]
|
|
|
|
|
|
def gen_configs():
|
|
|
for path in config_file + self._config_files:
|
|
|
try:
|
|
|
yield ConfigFile.from_path(path)
|
|
|
except (IOError, OSError, ValueError):
|
|
|
continue
|
|
|
|
|
|
for config in gen_configs():
|
|
|
try:
|
|
|
return config.get(section, name)
|
|
|
except KeyError:
|
|
|
continue
|
|
|
return None
|
|
|
|
|
|
def get_user_name(self, config_file=None):
|
|
|
"""
|
|
|
Returns user's name from global configuration file.
|
|
|
|
|
|
:param config_file: A path to file which should be used to retrieve
|
|
|
configuration from (might also be a list of file paths)
|
|
|
"""
|
|
|
return self.get_config_value('user', 'name', config_file)
|
|
|
|
|
|
def get_user_email(self, config_file=None):
|
|
|
"""
|
|
|
Returns user's email from global configuration file.
|
|
|
|
|
|
:param config_file: A path to file which should be used to retrieve
|
|
|
configuration from (might also be a list of file paths)
|
|
|
"""
|
|
|
return self.get_config_value('user', 'email', config_file)
|
|
|
|
