# Additional mappings that are not present in the pygments lexers

# used for building stats

# format is {'ext':['Names']} eg. {'py':['Python']} note: there can be

# more than one name for extension

# NOTE: that this will overide any mappings in LANGUAGES_EXTENSIONS_MAP

# build by pygments

EXTRA_MAPPINGS = {}

# additional lexer definitions for custom files

# it's overrides pygments lexers, and uses defined name of lexer to colorize the

# files. Format is {'ext': 'lexer_name'}

# List of lexers can be printed running:

# python -c "import pprint;from pygments import lexers;pprint.pprint([(x[0], x[1]) for x in lexers.get_all_lexers()]);"

EXTRA_LEXERS = {}

#==============================================================================

# WHOOSH INDEX EXTENSIONS

#==============================================================================

# if INDEX_EXTENSIONS is [] it'll use pygments lexers extensions by default.

# To set your own just add to this list extensions to index with content

INDEX_EXTENSIONS = []

# additional extensions for indexing besides the default from pygments

# those gets added to INDEX_EXTENSIONS

EXTRA_INDEX_EXTENSIONS = []

#==============================================================================

# POST CREATE REPOSITORY HOOK

#==============================================================================

# this function will be executed after each repository is created

def CREATE_REPO_HOOK(*args, **kwargs):

    """

    Post create repository HOOK

    kwargs available:

     :param repo_name:

     :param repo_type:

     :param description:

     :param private:

     :param created_on:

     :param enable_downloads:

     :param repo_id:

     :param owner_id:

     :param enable_statistics:

     :param clone_uri:

     :param fork_id:

     :param group_id:

     :param created_by:

    """

#==============================================================================

# PRE CREATE USER HOOK

#==============================================================================

# this function will be executed before each user is created

def PRE_CREATE_USER_HOOK(*args, **kwargs):

    """

    Pre create user HOOK, it returns a tuple of bool, reason.

    If bool is False the user creation will be stopped and reason

    will be displayed to the user.

    kwargs available:

    :param username:

    :param password:

    :param email:

    :param firstname:

    :param lastname:

    :param active:

    :param admin:

    :param created_by:

    """

    reason = 'allowed'

    return True, reason

#==============================================================================

# POST CREATE USER HOOK

#==============================================================================

# this function will be executed after each user is created

def CREATE_USER_HOOK(*args, **kwargs):

    """

    Post create user HOOK

    kwargs available:

      :param username:

      :param full_name_or_username:

      :param full_contact:

      :param user_id:

      :param name:

      :param firstname:

      :param short_contact:

      :param admin:

      :param lastname:

      :param ip_addresses:

      :param ldap_dn:

      :param email:

      :param api_key:

      :param last_login:

      :param full_name:

      :param active:

      :param password:

      :param emails:

      :param created_by:

    """

#==============================================================================

# POST DELETE REPOSITORY HOOK

#==============================================================================

# this function will be executed after each repository deletion

def DELETE_REPO_HOOK(*args, **kwargs):

    """

    Post delete repository HOOK

    kwargs available:

     :param repo_name:

     :param repo_type:

     :param description:

     :param private:

     :param created_on:

     :param enable_downloads:

     :param repo_id:

     :param owner_id:

     :param enable_statistics:

     :param clone_uri:

     :param fork_id:

     :param group_id:

     :param deleted_by:

     :param deleted_on:

    """

#==============================================================================

# POST DELETE USER HOOK

#==============================================================================

# this function will be executed after each user is deleted

def DELETE_USER_HOOK(*args, **kwargs):

    """

    Post delete user HOOK

    kwargs available:

      :param username:

      :param full_name_or_username:

      :param full_contact:

      :param user_id:

      :param name:

      :param firstname:

      :param short_contact:

      :param admin:

      :param lastname:

      :param ip_addresses:

      :param ldap_dn:

      :param email:

      :param api_key:

      :param last_login:

      :param full_name:

      :param active:

      :param password:

      :param emails:

      :param deleted_by:

    """

#==============================================================================

# POST PUSH HOOK

#==============================================================================

# this function will be executed after each push it's executed after the

# build-in hook that Kallithea uses for logging pushes

def PUSH_HOOK(*args, **kwargs):

    """

    Post push hook

    kwargs available:

      :param config: path to .ini config used

      :param scm: type of VS 'git' or 'hg'

      :param username: name of user who pushed

      :param ip: ip of who pushed

      :param action: push

      :param repository: repository name

      :param pushed_revs: list of pushed revisions

    """

#==============================================================================

# POST PULL HOOK

#==============================================================================

# this function will be executed after each push it's executed after the

# build-in hook that Kallithea uses for logging pulls

def PULL_HOOK(*args, **kwargs):

    """

    Post pull hook

    kwargs available::

      :param config: path to .ini config used

      :param scm: type of VS 'git' or 'hg'

      :param username: name of user who pulled

      :param ip: ip of who pulled

      :param action: pull

      :param repository: repository name

    """

# -*- coding: utf-8 -*-

# This program is free software: you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation, either version 3 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program.  If not, see <http://www.gnu.org/licenses/>.

"""

kallithea.lib.hooks

~~~~~~~~~~~~~~~~~~~

Hooks run by Kallithea

This file was forked by the Kallithea project in July 2014.

Original author and date, and relevant copyright and licensing information is below:

:created_on: Aug 6, 2010

:author: marcink

:copyright: (c) 2013 RhodeCode GmbH, and others.

:license: GPLv3, see LICENSE.md for more details.

"""

import os

import sys

import time

import mercurial.scmutil

from kallithea.lib import helpers as h

from kallithea.lib.exceptions import UserCreationError

from kallithea.lib.utils import action_logger, make_ui

from kallithea.lib.utils2 import HookEnvironmentError, ascii_str, get_hook_environment, safe_bytes, safe_str

from kallithea.lib.vcs.backends.base import EmptyChangeset

from kallithea.model.db import Repository, User

def _get_scm_size(alias, root_path):

    if not alias.startswith('.'):

        alias += '.'

    size_scm, size_root = 0, 0

    for path, dirs, files in os.walk(root_path):

        if path.find(alias) != -1:

            for f in files:

                try:

                    size_scm += os.path.getsize(os.path.join(path, f))

                except OSError:

                    pass

        else:

            for f in files:

                try:

                    size_root += os.path.getsize(os.path.join(path, f))

                except OSError:

                    pass

    size_scm_f = h.format_byte_size(size_scm)

    size_root_f = h.format_byte_size(size_root)

    size_total_f = h.format_byte_size(size_root + size_scm)

    return size_scm_f, size_root_f, size_total_f

def repo_size(ui, repo, hooktype=None, **kwargs):

    """Show size of Mercurial repository.

    Called as Mercurial hook changegroup.repo_size after push.

    """

    size_hg_f, size_root_f, size_total_f = _get_scm_size('.hg', safe_str(repo.root))

    last_cs = repo[len(repo) - 1]

    msg = ('Repository size .hg: %s Checkout: %s Total: %s\n'

           'Last revision is now r%s:%s\n') % (

        size_hg_f, size_root_f, size_total_f, last_cs.rev(), ascii_str(last_cs.hex())[:12]

    )

    ui.status(safe_bytes(msg))

def log_pull_action(ui, repo, **kwargs):

    """Logs user last pull action

    Called as Mercurial hook outgoing.pull_logger or from Kallithea before invoking Git.

    Does *not* use the action from the hook environment but is always 'pull'.

    """

    ex = get_hook_environment()

    user = User.get_by_username(ex.username)

    action = 'pull'

    action_logger(user, action, ex.repository, ex.ip, commit=True)

    # extension hook call

    from kallithea import EXTENSIONS

    callback = getattr(EXTENSIONS, 'PULL_HOOK', None)

    if callable(callback):

        kw = {}

        kw.update(ex)

        callback(**kw)

def log_push_action(ui, repo, node, node_last, **kwargs):

    """

    Register that changes have been added to the repo - log the action *and* invalidate caches.

    Note: This hook is not only logging, but also the side effect invalidating

    caches! The function should perhaps be renamed.

    Called as Mercurial hook changegroup.kallithea_log_push_action .

    The pushed changesets is given by the revset 'node:node_last'.

    """

    revs = [ascii_str(repo[r].hex()) for r in mercurial.scmutil.revrange(repo, [b'%s:%s' % (node, node_last)])]

    process_pushed_raw_ids(revs)

def process_pushed_raw_ids(revs):

    """

    Register that changes have been added to the repo - log the action *and* invalidate caches.

    Called from Mercurial changegroup.kallithea_log_push_action calling hook log_push_action,

    or from the Git post-receive hook calling handle_git_post_receive ...

    or from scm _handle_push.

    """

    ex = get_hook_environment()

    action = '%s:%s' % (ex.action, ','.join(revs))

    action_logger(ex.username, action, ex.repository, ex.ip, commit=True)

    from kallithea.model.scm import ScmModel

    ScmModel().mark_for_invalidation(ex.repository)

    # extension hook call

    from kallithea import EXTENSIONS

    callback = getattr(EXTENSIONS, 'PUSH_HOOK', None)

    if callable(callback):

        kw = {'pushed_revs': revs}

        kw.update(ex)

        callback(**kw)

def log_create_repository(repository_dict, created_by, **kwargs):

    """

    Post create repository Hook.

    :param repository: dict dump of repository object

    :param created_by: username who created repository

    available keys of repository_dict:

     'repo_type',

     'description',

     'private',

     'created_on',

     'enable_downloads',

     'repo_id',

     'owner_id',

     'enable_statistics',

     'clone_uri',

     'fork_id',

     'group_id',

     'repo_name'

    """

    from kallithea import EXTENSIONS

    callback = getattr(EXTENSIONS, 'CREATE_REPO_HOOK', None)

    if callable(callback):

        kw = {}

        kw.update(repository_dict)

        kw.update({'created_by': created_by})

        kw.update(kwargs)

        callback(**kw)

def check_allowed_create_user(user_dict, created_by, **kwargs):

    # pre create hooks

    from kallithea import EXTENSIONS

    callback = getattr(EXTENSIONS, 'PRE_CREATE_USER_HOOK', None)

    if callable(callback):

        allowed, reason = callback(created_by=created_by, **user_dict)

        if not allowed:

            raise UserCreationError(reason)

def log_create_user(user_dict, created_by, **kwargs):

    """

    Post create user Hook.

    :param user_dict: dict dump of user object

    available keys for user_dict:

     'username',

     'full_name_or_username',

     'full_contact',

     'user_id',

     'name',

     'firstname',

     'short_contact',

     'admin',

     'lastname',

     'ip_addresses',

     'ldap_dn',

     'email',

     'api_key',

     'last_login',

     'full_name',

     'active',

     'password',

     'emails',

    """

    from kallithea import EXTENSIONS

    callback = getattr(EXTENSIONS, 'CREATE_USER_HOOK', None)

    if callable(callback):

        callback(created_by=created_by, **user_dict)

def log_delete_repository(repository_dict, deleted_by, **kwargs):

    """

    Post delete repository Hook.

    :param repository: dict dump of repository object

    :param deleted_by: username who deleted the repository

    available keys of repository_dict:

     'repo_type',

     'description',

     'private',

     'created_on',

     'enable_downloads',

     'repo_id',

     'owner_id',

     'enable_statistics',

     'clone_uri',

     'fork_id',

     'group_id',

     'repo_name'

    """

    from kallithea import EXTENSIONS

    callback = getattr(EXTENSIONS, 'DELETE_REPO_HOOK', None)

    if callable(callback):

        kw = {}

        kw.update(repository_dict)

        kw.update({'deleted_by': deleted_by,

                   'deleted_on': time.time()})

        kw.update(kwargs)

        callback(**kw)

def log_delete_user(user_dict, deleted_by, **kwargs):

    """

    Post delete user Hook.

    :param user_dict: dict dump of user object

    available keys for user_dict:

     'username',

     'full_name_or_username',

     'full_contact',

     'user_id',

     'name',

     'firstname',

     'short_contact',

     'admin',

     'lastname',

     'ip_addresses',

     'ldap_dn',

     'email',

     'api_key',

     'last_login',

     'full_name',

     'active',

     'password',

     'emails',

    """

    from kallithea import EXTENSIONS

    callback = getattr(EXTENSIONS, 'DELETE_USER_HOOK', None)

    if callable(callback):

        callback(deleted_by=deleted_by, **user_dict)

def _hook_environment(repo_path):

    """

    Create a light-weight environment for stand-alone scripts and return an UI and the

    db repository.

    Git hooks are executed as subprocess of Git while Kallithea is waiting, and

    they thus need enough info to be able to create an app environment and

    connect to the database.

    """

    import paste.deploy

    import kallithea.config.application

    extras = get_hook_environment()

    path_to_ini_file = extras['config']

    config = paste.deploy.appconfig('config:' + path_to_ini_file)

    #logging.config.fileConfig(ini_file_path) # Note: we are in a different process - don't use configured logging

    kallithea.config.application.make_app(config.global_conf, **config.local_conf)

    # fix if it's not a bare repo

    if repo_path.endswith(os.sep + '.git'):

        repo_path = repo_path[:-5]

    repo = Repository.get_by_full_path(repo_path)

    if not repo:

        raise OSError('Repository %s not found in database' % repo_path)

    baseui = make_ui()

    return baseui, repo

def handle_git_pre_receive(repo_path, git_stdin_lines):

    """Called from Git pre-receive hook.

    The returned value is used as hook exit code and must be 0.

    """

    # Currently unused. TODO: remove?

    return 0

def handle_git_post_receive(repo_path, git_stdin_lines):

    """Called from Git post-receive hook.

    The returned value is used as hook exit code and must be 0.

    """

    try:

        baseui, repo = _hook_environment(repo_path)

    except HookEnvironmentError as e:

        sys.stderr.write("Skipping Kallithea Git post-recieve hook %r.\nGit was apparently not invoked by Kallithea: %s\n" % (sys.argv[0], e))

        return 0

    # the post push hook should never use the cached instance

    scm_repo = repo.scm_instance_no_cache()

    rev_data = []

    for l in git_stdin_lines:

        old_rev, new_rev, ref = l.strip().split(' ')

        _ref_data = ref.split('/')

        if _ref_data[1] in ['tags', 'heads']:

            rev_data.append({'old_rev': old_rev,

                             'new_rev': new_rev,

                             'ref': ref,

                             'type': _ref_data[1],

                             'name': '/'.join(_ref_data[2:])})

    git_revs = []

    for push_ref in rev_data:

        _type = push_ref['type']

        if _type == 'heads':

            if push_ref['old_rev'] == EmptyChangeset().raw_id:

                # update the symbolic ref if we push new repo

                if scm_repo.is_empty():

                    scm_repo._repo.refs.set_symbolic_ref(

                        b'HEAD',

                        b'refs/heads/%s' % safe_bytes(push_ref['name']))

                # build exclude list without the ref

                cmd = ['for-each-ref', '--format=%(refname)', 'refs/heads/*']

                stdout = scm_repo.run_git_command(cmd)

                ref = push_ref['ref']

                heads = [head for head in stdout.splitlines() if head != ref]

                # now list the git revs while excluding from the list

                cmd = ['log', push_ref['new_rev'], '--reverse', '--pretty=format:%H']

                cmd.append('--not')

                cmd.extend(heads) # empty list is ok

                stdout = scm_repo.run_git_command(cmd)

                git_revs += stdout.splitlines()

            elif push_ref['new_rev'] == EmptyChangeset().raw_id:

                # delete branch case

                git_revs += ['delete_branch=>%s' % push_ref['name']]

            else:

                cmd = ['log', '%(old_rev)s..%(new_rev)s' % push_ref,

                       '--reverse', '--pretty=format:%H']

                stdout = scm_repo.run_git_command(cmd)

                git_revs += stdout.splitlines()

        elif _type == 'tags':

            git_revs += ['tag=>%s' % push_ref['name']]

    process_pushed_raw_ids(git_revs)

    return 0

# Almost exactly like Mercurial contrib/hg-ssh:

def rejectpush(ui, **kwargs):

    """Mercurial hook to be installed as pretxnopen and prepushkey for read-only repos.

    Return value 1 will make the hook fail and reject the push.

    """

    ex = get_hook_environment()

    ui.warn(safe_bytes("Push access to %r denied\n" % ex.repository))

    return 1

# -*- coding: utf-8 -*-

# This program is free software: you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation, either version 3 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program.  If not, see <http://www.gnu.org/licenses/>.

"""

kallithea.model.pull_request

~~~~~~~~~~~~~~~~~~~~~~~~~~~~

pull request model for Kallithea

This file was forked by the Kallithea project in July 2014.

Original author and date, and relevant copyright and licensing information is below:

:created_on: Jun 6, 2012

:author: marcink

:copyright: (c) 2013 RhodeCode GmbH, and others.

:license: GPLv3, see LICENSE.md for more details.

"""

import datetime

import logging

import re

from tg import request

from tg.i18n import ugettext as _

from kallithea.lib import helpers as h

from kallithea.lib.utils2 import ascii_bytes, extract_mentioned_users

from kallithea.model.db import ChangesetStatus, PullRequest, PullRequestReviewer, User

from kallithea.model.meta import Session

from kallithea.model.notification import NotificationModel

log = logging.getLogger(__name__)

def _assert_valid_reviewers(seq):

    """Sanity check: elements are actual User objects, and not the default user."""

    assert not any(user.is_default_user for user in seq)

class PullRequestModel(object):

    def add_reviewers(self, user, pr, reviewers, mention_recipients=None):

        """Add reviewer and send notification to them.

        """

        reviewers = set(reviewers)

        _assert_valid_reviewers(reviewers)

        if mention_recipients is not None:

            mention_recipients = set(mention_recipients) - reviewers

            _assert_valid_reviewers(mention_recipients)

        redundant_reviewers = set(User.query() \

            .join(PullRequestReviewer) \

            .filter(PullRequestReviewer.pull_request == pr) \

            .filter(PullRequestReviewer.user_id.in_(r.user_id for r in reviewers))

            .all())

        if redundant_reviewers:

            log.debug('Following reviewers were already part of pull request %s: %s', pr.pull_request_id, redundant_reviewers)

            reviewers -= redundant_reviewers

        log.debug('Adding reviewers to pull request %s: %s', pr.pull_request_id, reviewers)

        for reviewer in reviewers:

            prr = PullRequestReviewer(reviewer, pr)

            Session().add(prr)

        # notification to reviewers

        pr_url = pr.url(canonical=True)

        threading = ['%s-pr-%s@%s' % (pr.other_repo.repo_name,

                                      pr.pull_request_id,

                                      h.canonical_hostname())]

        subject = h.link_to(

            _('%(user)s wants you to review pull request %(pr_nice_id)s: %(pr_title)s') %

                {'user': user.username,

                 'pr_title': pr.title,

                 'pr_nice_id': pr.nice_id()},

            pr_url)

        body = pr.description

        _org_ref_type, org_ref_name, _org_rev = pr.org_ref.split(':')

        _other_ref_type, other_ref_name, _other_rev = pr.other_ref.split(':')

        revision_data = [(x.raw_id, x.message)

                         for x in map(pr.org_repo.get_changeset, pr.revisions)]

        email_kwargs = {

            'pr_title': pr.title,

            'pr_title_short': h.shorter(pr.title, 50),

            'pr_user_created': user.full_name_and_username,

            'pr_repo_url': h.canonical_url('summary_home', repo_name=pr.other_repo.repo_name),

            'pr_url': pr_url,

            'pr_revisions': revision_data,

            'repo_name': pr.other_repo.repo_name,

            'org_repo_name': pr.org_repo.repo_name,

            'pr_nice_id': pr.nice_id(),

            'pr_target_repo': h.canonical_url('summary_home',

                               repo_name=pr.other_repo.repo_name),

            'pr_target_branch': other_ref_name,

            'pr_source_repo': h.canonical_url('summary_home',

                               repo_name=pr.org_repo.repo_name),

            'pr_source_branch': org_ref_name,

            'pr_owner': pr.owner,

            'pr_owner_username': pr.owner.username,

            'pr_username': user.username,

            'threading': threading,

            'is_mention': False,

            }

        if reviewers:

            NotificationModel().create(created_by=user, subject=subject, body=body,

                                       recipients=reviewers,

                                       type_=NotificationModel.TYPE_PULL_REQUEST,

                                       email_kwargs=email_kwargs)

        if mention_recipients:

            email_kwargs['is_mention'] = True

            subject = _('[Mention]') + ' ' + subject

            # FIXME: this subject is wrong and unused!

            NotificationModel().create(created_by=user, subject=subject, body=body,

                                       recipients=mention_recipients,

                                       type_=NotificationModel.TYPE_PULL_REQUEST,

                                       email_kwargs=email_kwargs)

        return reviewers, redundant_reviewers

    def mention_from_description(self, user, pr, old_description=''):

        mention_recipients = (extract_mentioned_users(pr.description) -

                              extract_mentioned_users(old_description))

        log.debug("Mentioning %s", mention_recipients)

        self.add_reviewers(user, pr, set(), mention_recipients)

    def remove_reviewers(self, user, pull_request, reviewers):

        """Remove specified users from being reviewers of the PR."""

        if not reviewers:

            return # avoid SQLAlchemy warning about empty sequence for IN-predicate

        PullRequestReviewer.query() \

            .filter_by(pull_request=pull_request) \

            .filter(PullRequestReviewer.user_id.in_(r.user_id for r in reviewers)) \

            .delete(synchronize_session='fetch') # the default of 'evaluate' is not available

    def delete(self, pull_request):

        pull_request = PullRequest.guess_instance(pull_request)

        Session().delete(pull_request)

        if pull_request.org_repo.scm_instance.alias == 'git':

            # remove a ref under refs/pull/ so that commits can be garbage-collected

            try:

                del pull_request.org_repo.scm_instance._repo[b"refs/pull/%d/head" % pull_request.pull_request_id]

            except KeyError:

                pass

    def close_pull_request(self, pull_request):

        pull_request = PullRequest.guess_instance(pull_request)

        pull_request.status = PullRequest.STATUS_CLOSED

        pull_request.updated_on = datetime.datetime.now()

class CreatePullRequestAction(object):

    class ValidationError(Exception):

        pass

    class Empty(ValidationError):

        pass

    class AmbiguousAncestor(ValidationError):

        pass

    class Unauthorized(ValidationError):

        pass

    @staticmethod

    def is_user_authorized(org_repo, other_repo):

        """Performs authorization check with only the minimum amount of

        information needed for such a check, rather than a full command

        object.

        """

        if (h.HasRepoPermissionLevel('read')(org_repo.repo_name) and

            h.HasRepoPermissionLevel('read')(other_repo.repo_name)

        ):

            return True

        return False

    def __init__(self, org_repo, other_repo, org_ref, other_ref, title, description, owner, reviewers):

        from kallithea.controllers.compare import CompareController

        reviewers = set(reviewers)

        _assert_valid_reviewers(reviewers)

        (org_ref_type,

         org_ref_name,

         org_rev) = org_ref.split(':')

        org_display = h.short_ref(org_ref_type, org_ref_name)

        if org_ref_type == 'rev':

            cs = org_repo.scm_instance.get_changeset(org_rev)

            org_ref = 'branch:%s:%s' % (cs.branch, cs.raw_id)

        (other_ref_type,

         other_ref_name,

         other_rev) = other_ref.split(':')

        if other_ref_type == 'rev':

            cs = other_repo.scm_instance.get_changeset(other_rev)

            other_ref_name = cs.raw_id[:12]

            other_ref = '%s:%s:%s' % (other_ref_type, other_ref_name, cs.raw_id)

        other_display = h.short_ref(other_ref_type, other_ref_name)

        cs_ranges, _cs_ranges_not, ancestor_revs = \

            CompareController._get_changesets(org_repo.scm_instance.alias,

                                              other_repo.scm_instance, other_rev, # org and other "swapped"

                                              org_repo.scm_instance, org_rev,

                                              )

        if not cs_ranges:

            raise self.Empty(_('Cannot create empty pull request'))

        if not ancestor_revs:

            ancestor_rev = org_repo.scm_instance.EMPTY_CHANGESET

        elif len(ancestor_revs) == 1:

            ancestor_rev = ancestor_revs[0]

        else:

            raise self.AmbiguousAncestor(

                _('Cannot create pull request - criss cross merge detected, please merge a later %s revision to %s')

                % (other_ref_name, org_ref_name))

        self.revisions = [cs_.raw_id for cs_ in cs_ranges]

        # hack: ancestor_rev is not an other_rev but we want to show the

        # requested destination and have the exact ancestor

        other_ref = '%s:%s:%s' % (other_ref_type, other_ref_name, ancestor_rev)