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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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import logging
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import traceback
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import urllib
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import urllib2
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from dulwich.repo import Repo, NotGitRepository
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from dulwich.objects import Tag
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from string import Template
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import rhodecode
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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, ThreadLocalLazyProperty
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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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from rhodecode.lib import subprocessio
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log = logging.getLogger(__name__)
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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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repo = self._get_repo(create, src_url, update_after_clone, bare)
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self.bare = repo.bare
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self._config_files = [
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bare and abspath(self.path, 'config')
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or abspath(self.path, '.git', 'config'),
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abspath(get_user_home(), '.gitconfig'),
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]
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@ThreadLocalLazyProperty
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def _repo(self):
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repo = Repo(self.path)
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# patch the instance of GitRepo with an "FAKE" ui object to add
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# compatibility layer with Mercurial
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if not hasattr(repo, 'ui'):
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from mercurial.ui import ui
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baseui = ui()
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setattr(repo, 'ui', baseui)
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return repo
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@property
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def head(self):
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try:
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return self._repo.head()
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except KeyError:
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return None
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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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@classmethod
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def _run_git_command(cls, cmd, **opts):
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"""
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Runs given ``cmd`` as git command and returns tuple
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(stdout, stderr).
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:param cmd: git command to be executed
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:param opts: env options to pass into Subprocess command
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"""
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if '_bare' in opts:
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_copts = []
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del opts['_bare']
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else:
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_copts = ['-c', 'core.quotepath=false', ]
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safe_call = False
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if '_safe' in opts:
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#no exc on failure
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del opts['_safe']
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safe_call = True
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_str_cmd = False
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if isinstance(cmd, basestring):
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cmd = [cmd]
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_str_cmd = True
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gitenv = os.environ
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# need to clean fix GIT_DIR !
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if 'GIT_DIR' in gitenv:
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del gitenv['GIT_DIR']
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gitenv['GIT_CONFIG_NOGLOBAL'] = '1'
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_git_path = rhodecode.CONFIG.get('git_path', 'git')
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cmd = [_git_path] + _copts + cmd
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if _str_cmd:
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cmd = ' '.join(cmd)
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try:
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_opts = dict(
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env=gitenv,
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shell=False,
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)
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_opts.update(opts)
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p = subprocessio.SubprocessIOChunker(cmd, **_opts)
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except (EnvironmentError, OSError), err:
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tb_err = ("Couldn't run git command (%s).\n"
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"Original error was:%s\n" % (cmd, err))
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log.error(tb_err)
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if safe_call:
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return '', err
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else:
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raise RepositoryError(tb_err)
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return ''.join(p.output), ''.join(p.error)
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def run_git_command(self, cmd):
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opts = {}
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if os.path.isdir(self.path):
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opts['cwd'] = self.path
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return self._run_git_command(cmd, **opts)
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@classmethod
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def _check_url(cls, 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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from mercurial.util import url as Url
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# those authnadlers are patched for python 2.6.5 bug an
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# infinit looping when given invalid resources
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from mercurial.url import httpbasicauthhandler, httpdigestauthhandler
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# check first if it's not an local url
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if os.path.isdir(url) or url.startswith('file:'):
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return True
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if('+' in url[:url.find('://')]):
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url = url[url.find('+') + 1:]
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handlers = []
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test_uri, authinfo = Url(url).authinfo()
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if not test_uri.endswith('info/refs'):
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test_uri = test_uri.rstrip('/') + '/info/refs'
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if authinfo:
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#create a password manager
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passmgr = urllib2.HTTPPasswordMgrWithDefaultRealm()
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passmgr.add_password(*authinfo)
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handlers.extend((httpbasicauthhandler(passmgr),
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httpdigestauthhandler(passmgr)))
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o = urllib2.build_opener(*handlers)
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o.addheaders = [('User-Agent', 'git/1.7.8.0')] # fake some git
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q = {"service": 'git-upload-pack'}
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qs = '?%s' % urllib.urlencode(q)
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cu = "%s%s" % (test_uri, qs)
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req = urllib2.Request(cu, None, {})
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try:
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resp = o.open(req)
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return resp.code == 200
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except Exception, e:
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# means it cannot be cloned
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raise urllib2.URLError("[%s] %s" % (url, e))
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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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GitRepository._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 self._repo
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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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# we must check if this repo is not empty, since later command
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# fails if it is. And it's cheaper to ask than throw the subprocess
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# errors
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try:
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self._repo.head()
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except KeyError:
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return []
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cmd = 'rev-list --all --reverse --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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return so.splitlines()
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def _get_all_revisions2(self):
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#alternate implementation using dulwich
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includes = [x[1][0] for x in self._parsed_refs.iteritems()
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if x[1][1] != 'T']
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return [c.commit.id for c in self._repo.get_walker(include=includes)]
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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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# get by branch/tag name
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_ref_revision = self._parsed_refs.get(revision)
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_tags_shas = self.tags.values()
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if _ref_revision: # and _ref_revision[1] in ['H', 'RH', 'T']:
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return _ref_revision[0]
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# maybe it's a tag ? we don't have them in self.revisions
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elif revision in _tags_shas:
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return _tags_shas[_tags_shas.index(revision)]
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elif 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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def get_hook_location(self):
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"""
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returns absolute path to location where hooks are stored
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"""
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loc = os.path.join(self.path, 'hooks')
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if not self.bare:
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loc = os.path.join(self.path, '.git', 'hooks')
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return loc
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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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idx_loc = '' if self.bare else '.git'
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# fallback to filesystem
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in_path = os.path.join(self.path, idx_loc, "index")
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he_path = os.path.join(self.path, idx_loc, "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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idx_loc = '' if self.bare else '.git'
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undefined_description = u'unknown'
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description_path = os.path.join(self.path, idx_loc, '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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sortkey = lambda ctx: ctx[0]
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_branches = [(x[0], x[1][0])
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for x in self._parsed_refs.iteritems() if x[1][1] == 'H']
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return OrderedDict(sorted(_branches, key=sortkey, reverse=False))
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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 _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 = [(x[0], x[1][0])
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for x in self._parsed_refs.iteritems() if x[1][1] == 'T']
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return OrderedDict(sorted(_tags, key=sortkey, reverse=True))
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|
|
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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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|
|
|
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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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|
"""
|
|
|
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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|
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|
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self._parsed_refs = self._get_parsed_refs()
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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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|
"""
|
|
|
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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|
"""
|
|
|
if name not in self.tags:
|
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|
raise TagDoesNotExistError("Tag %s does not exist" % name)
|
|
|
tagpath = posixpath.join(self._repo.refs.path, 'refs', 'tags', name)
|
|
|
try:
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|
os.remove(tagpath)
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|
self._parsed_refs = self._get_parsed_refs()
|
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|
self.tags = self._get_tags()
|
|
|
except OSError, e:
|
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|
raise RepositoryError(e.strerror)
|
|
|
|
|
|
@LazyProperty
|
|
|
def _parsed_refs(self):
|
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|
return self._get_parsed_refs()
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|
|
|
|
|
def _get_parsed_refs(self):
|
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|
refs = self._repo.get_refs()
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|
|
keys = [('refs/heads/', 'H'),
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|
('refs/remotes/origin/', 'RH'),
|
|
|
('refs/tags/', 'T')]
|
|
|
_refs = {}
|
|
|
for ref, sha in refs.iteritems():
|
|
|
for k, type_ in keys:
|
|
|
if ref.startswith(k):
|
|
|
_key = ref[len(k):]
|
|
|
if type_ == 'T':
|
|
|
obj = self._repo.get_object(sha)
|
|
|
if isinstance(obj, Tag):
|
|
|
sha = self._repo.get_object(sha).object[1]
|
|
|
_refs[_key] = [sha, type_]
|
|
|
break
|
|
|
return _refs
|
|
|
|
|
|
def _heads(self, reverse=False):
|
|
|
refs = self._repo.get_refs()
|
|
|
heads = {}
|
|
|
|
|
|
for key, val in refs.items():
|
|
|
for ref_key in ['refs/heads/', 'refs/remotes/origin/']:
|
|
|
if key.startswith(ref_key):
|
|
|
n = key[len(ref_key):]
|
|
|
if n not in ['HEAD']:
|
|
|
heads[n] = val
|
|
|
|
|
|
return heads if reverse else dict((y, x) for x, y in heads.iteritems())
|
|
|
|
|
|
def get_changeset(self, revision=None):
|
|
|
"""
|
|
|
Returns ``GitChangeset`` object representing commit from git repository
|
|
|
at the given revision or head (most recent commit) if None given.
|
|
|
"""
|
|
|
if isinstance(revision, GitChangeset):
|
|
|
return revision
|
|
|
revision = self._get_revision(revision)
|
|
|
changeset = GitChangeset(repository=self, revision=revision)
|
|
|
return changeset
|
|
|
|
|
|
def get_changesets(self, start=None, end=None, start_date=None,
|
|
|
end_date=None, branch_name=None, reverse=False):
|
|
|
"""
|
|
|
Returns iterator of ``GitChangeset`` objects from start to end (both
|
|
|
are inclusive), in ascending date order (unless ``reverse`` is set).
|
|
|
|
|
|
:param start: changeset ID, as str; first returned changeset
|
|
|
:param end: changeset ID, as str; last returned changeset
|
|
|
:param start_date: if specified, changesets with commit date less than
|
|
|
``start_date`` would be filtered out from returned set
|
|
|
:param end_date: if specified, changesets with commit date greater than
|
|
|
``end_date`` would be filtered out from returned set
|
|
|
:param branch_name: if specified, changesets not reachable from given
|
|
|
branch would be filtered out from returned set
|
|
|
:param reverse: if ``True``, returned generator would be reversed
|
|
|
(meaning that returned changesets would have descending date order)
|
|
|
|
|
|
:raise BranchDoesNotExistError: If given ``branch_name`` does not
|
|
|
exist.
|
|
|
:raise ChangesetDoesNotExistError: If changeset for given ``start`` or
|
|
|
``end`` could not be found.
|
|
|
|
|
|
"""
|
|
|
if branch_name and branch_name not in self.branches:
|
|
|
raise BranchDoesNotExistError("Branch '%s' not found" \
|
|
|
% branch_name)
|
|
|
# %H at format means (full) commit hash, initial hashes are retrieved
|
|
|
# in ascending date order
|
|
|
cmd_template = 'log --date-order --reverse --pretty=format:"%H"'
|
|
|
cmd_params = {}
|
|
|
if start_date:
|
|
|
cmd_template += ' --since "$since"'
|
|
|
cmd_params['since'] = start_date.strftime('%m/%d/%y %H:%M:%S')
|
|
|
if end_date:
|
|
|
cmd_template += ' --until "$until"'
|
|
|
cmd_params['until'] = end_date.strftime('%m/%d/%y %H:%M:%S')
|
|
|
if branch_name:
|
|
|
cmd_template += ' $branch_name'
|
|
|
cmd_params['branch_name'] = branch_name
|
|
|
else:
|
|
|
cmd_template += ' --all'
|
|
|
|
|
|
cmd = Template(cmd_template).safe_substitute(**cmd_params)
|
|
|
revs = self.run_git_command(cmd)[0].splitlines()
|
|
|
start_pos = 0
|
|
|
end_pos = len(revs)
|
|
|
if start:
|
|
|
_start = self._get_revision(start)
|
|
|
try:
|
|
|
start_pos = revs.index(_start)
|
|
|
except ValueError:
|
|
|
pass
|
|
|
|
|
|
if end is not None:
|
|
|
_end = self._get_revision(end)
|
|
|
try:
|
|
|
end_pos = revs.index(_end)
|
|
|
except ValueError:
|
|
|
pass
|
|
|
|
|
|
if None not in [start, end] and start_pos > end_pos:
|
|
|
raise RepositoryError('start cannot be after end')
|
|
|
|
|
|
if end_pos is not None:
|
|
|
end_pos += 1
|
|
|
|
|
|
revs = revs[start_pos:end_pos]
|
|
|
if reverse:
|
|
|
revs = reversed(revs)
|
|
|
for rev in revs:
|
|
|
yield self.get_changeset(rev)
|
|
|
|
|
|
def get_diff(self, rev1, rev2, path=None, ignore_whitespace=False,
|
|
|
context=3):
|
|
|
"""
|
|
|
Returns (git like) *diff*, as plain text. Shows changes introduced by
|
|
|
``rev2`` since ``rev1``.
|
|
|
|
|
|
:param rev1: Entry point from which diff is shown. Can be
|
|
|
``self.EMPTY_CHANGESET`` - in this case, patch showing all
|
|
|
the changes since empty state of the repository until ``rev2``
|
|
|
:param rev2: Until which revision changes should be shown.
|
|
|
:param ignore_whitespace: If set to ``True``, would not show whitespace
|
|
|
changes. Defaults to ``False``.
|
|
|
:param context: How many lines before/after changed lines should be
|
|
|
shown. Defaults to ``3``.
|
|
|
"""
|
|
|
flags = ['-U%s' % context, '--full-index', '--binary', '-p', '-M', '--abbrev=40']
|
|
|
if ignore_whitespace:
|
|
|
flags.append('-w')
|
|
|
|
|
|
if hasattr(rev1, 'raw_id'):
|
|
|
rev1 = getattr(rev1, 'raw_id')
|
|
|
|
|
|
if hasattr(rev2, 'raw_id'):
|
|
|
rev2 = getattr(rev2, 'raw_id')
|
|
|
|
|
|
if rev1 == self.EMPTY_CHANGESET:
|
|
|
rev2 = self.get_changeset(rev2).raw_id
|
|
|
cmd = ' '.join(['show'] + flags + [rev2])
|
|
|
else:
|
|
|
rev1 = self.get_changeset(rev1).raw_id
|
|
|
rev2 = self.get_changeset(rev2).raw_id
|
|
|
cmd = ' '.join(['diff'] + flags + [rev1, rev2])
|
|
|
|
|
|
if path:
|
|
|
cmd += ' -- "%s"' % path
|
|
|
|
|
|
stdout, stderr = self.run_git_command(cmd)
|
|
|
# If we used 'show' command, strip first few lines (until actual diff
|
|
|
# starts)
|
|
|
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)
|
|
|
|
|
|
def pull(self, url):
|
|
|
"""
|
|
|
Tries to pull changes from external location.
|
|
|
"""
|
|
|
url = self._get_url(url)
|
|
|
cmd = ['pull']
|
|
|
cmd.append("--ff-only")
|
|
|
cmd.append(url)
|
|
|
cmd = ' '.join(cmd)
|
|
|
# If error occurs run_git_command raises RepositoryError already
|
|
|
self.run_git_command(cmd)
|
|
|
|
|
|
def fetch(self, url):
|
|
|
"""
|
|
|
Tries to pull changes from external location.
|
|
|
"""
|
|
|
url = self._get_url(url)
|
|
|
so, se = self.run_git_command('ls-remote -h %s' % url)
|
|
|
refs = []
|
|
|
for line in (x for x in so.splitlines()):
|
|
|
sha, ref = line.split('\t')
|
|
|
refs.append(ref)
|
|
|
refs = ' '.join(('+%s:%s' % (r, r) for r in refs))
|
|
|
cmd = '''fetch %s -- %s''' % (url, refs)
|
|
|
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)
|
|
|
|
