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groups.py
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groups.py
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# -*- coding: utf-8 -*-
"""
Graphingwiki group page editing functions
- Adding, deleting and renaming group members
- Supports only Wiki groups
@copyright: 2014 by Juhani Eronen
@license: MIT <http://www.opensource.org/licenses/mit-license.php>
"""
import re
if __name__ == '__main__':
# We need to import contexts before importing User, because otherwise
# the relative imports in MoinMoin will fail.
import MoinMoin.web.contexts
from MoinMoin.user import User
from MoinMoin.wikiutil import isGroupPage, normalize_pagename
from MoinMoin.PageEditor import PageEditor
from MoinMoin.datastruct.backends.wiki_groups import WikiGroup
from MoinMoin.datastruct.backends import GroupDoesNotExistError
from editing import _test, _doctest_request
user_re = re.compile('(^ +\*\s*(.+)$\n?)', re.M)
class GroupException(Exception):
pass
def groups_by_user(request, account, recursive=False):
_ = request.getText
if not account:
raise GroupException(_('No account specified.'))
if not User(request, name=account).exists():
raise GroupException(_('User not valid: ') + account)
wiki_groups = set(group for group in
request.groups.groups_with_member(account) if
isinstance(request.groups[group], WikiGroup))
if recursive:
return wiki_groups
else:
return set(gn for gn in wiki_groups if
account in request.groups[gn].members)
def groups_by_user_transitive(request, account):
"""
Returns the groups where the user is a member, as well as the
groups which in turn have these groups as members.
"""
real_groups = groups_by_user(request, account, recursive=False)
recursive_groups = groups_by_user(request, account, recursive=True)
return real_groups, recursive_groups - real_groups
def users_by_group(request, grouppage, recursive=False):
_ = request.getText
success, msg = check_grouppage(request, grouppage, writecheck=False)
if not success:
raise GroupException(msg + "(%s)" % (grouppage))
if recursive:
return request.groups[grouppage]
else:
return request.groups[grouppage].members
def check_grouppage(request, grouppage, writecheck=True, createcheck=True):
_ = request.getText
grouppage = normalize_pagename(grouppage, request.cfg)
if not isGroupPage(grouppage, request.cfg):
return False, _("Invalid group name.")
if writecheck:
if not request.user.may.write(grouppage):
return False, _("You are not allowed to edit this page.")
if createcheck:
try:
if not isinstance(request.groups[grouppage], WikiGroup):
return False, _("Invalid group.")
except GroupDoesNotExistError:
return False, _("Invalid group.")
return True, ''
def check_users(request, accounts):
_ = request.getText
if not accounts:
raise GroupException(_('No accounts specified.'))
for uname in accounts:
if not User(request, name=uname).exists():
raise GroupException(_('User not valid: ') + uname)
def _group_add(request, pagetext, userlist):
"""
>>> request = _doctest_request()
>>> s = u"= @PAGE@ =\\n" + \
u" * [[user2]]\\n" + \
u" * [[user1]]\\n"
>>> _group_add(request, s, ['user3'])
u'= @PAGE@ =\\n * [[user3]]\\n * [[user2]]\\n * [[user1]]\\n'
>>> s = u"#acl user:read,write,delete,revert,admin All:read\\n\\n" + \
u" * [[user2]]\\n" + \
u" * [[user1]]\\n"
>>> _group_add(request, s, ['user3'])
u'#acl user:read,write,delete,revert,admin All:read\\n\\n * [[user3]]\\n * [[user2]]\\n * [[user1]]\\n'
>>> s = u''
>>> _group_add(request, s, ['user3', 'user2'])
u' * [[user2]]\\n * [[user3]]\\n'
>>> s = u'This is a group page\\n'
>>> _group_add(request, s, ['user3', 'user2'])
u'This is a group page\\n * [[user2]]\\n * [[user3]]\\n'
"""
if not userlist:
return pagetext
# Empty pages with only whitespace
if not re.sub('\s', '', pagetext):
pagetext = ''
#
if not user_re.findall(pagetext):
pagetext += u' * [[%s]]\n' % userlist[0]
userlist = userlist[1:]
for user in userlist:
pagetext = user_re.subn(r' * [[%s]]\n\1' % user, pagetext, 1)[0]
return pagetext
def _group_rename(request, pagetext, userlist):
"""
>>> request = _doctest_request()
>>> s = u"= @PAGE@ =\\n" + \
u" * [[user2]]\\n" + \
u" * [[user1]]\\n"
Rename needs even-sized lists
>>> _group_rename(request, s, ['user2'])
u'= @PAGE@ =\\n * [[user2]]\\n * [[user1]]\\n'
>>> _group_rename(request, s, ['user2', 'user3'])
u'= @PAGE@ =\\n * [[user3]]\\n * [[user1]]\\n'
>>> _group_rename(request, s, ['user1', 'user3'])
u'= @PAGE@ =\\n * [[user3]]\\n * [[user2]]\\n'
>>> _group_rename(request, s, ['user1', 'user3', 'user2', 'user4'])
u'= @PAGE@ =\\n * [[user4]]\\n * [[user3]]\\n'
>>> s = u"= @PAGE@ =\\n * [[user2]]\\n * [[user1]]\\n * [[user1]]\\n"
>>> _group_rename(request, s, ['user1', 'user3'])
u'= @PAGE@ =\\n * [[user3]]\\n * [[user2]]\\n'
>>> s = u" * [[user2]]\\n"
>>> _group_rename(request, s, ['user2', 'user3'])
u' * [[user3]]\\n'
"""
if not len(userlist) % 2:
for user1, user2 in zip(userlist[::2], userlist[1::2]):
pagetext = _group_del(request, pagetext, [user1])
pagetext = _group_add(request, pagetext, [user2])
return pagetext
def _group_del(request, pagetext, userlist):
"""
>>> request = _doctest_request()
>>> s = u"= @PAGE@ =\\n" + \
u" * [[user2]]\\n" + \
u" * [[user1]]\\n"
Basic functions
>>> _group_del(request, s, ['user2'])
u'= @PAGE@ =\\n * [[user1]]\\n'
>>> _group_del(request, s, ['user3'])
u'= @PAGE@ =\\n * [[user2]]\\n * [[user1]]\\n'
Double users might cause problems
>>> s += u" * [[user1]]\\n"
>>> _group_del(request, s, ['user1'])
u'= @PAGE@ =\\n * [[user2]]\\n'
>>> s = u" * [[user1]]\\n"
>>> _group_del(request, s, ['user1'])
u'\\n'
Handle whitespaces
>>> request = _doctest_request()
>>> s = u"= @PAGE@ =\\n" + \
u" * [[user2]] \\n" + \
u" * [[user3]]\t\\n" + \
u" * [[user1]] "
>>> _group_del(request, s, ['user2', 'user3'])
u'= @PAGE@ =\\n * [[user1]] '
"""
for user in userlist:
pagetext = re.sub('(?m)(^\s+\*\s*(\[\[%s\]\])\s*$\n?)' % user, '',
pagetext)
# empty group pages cannot be saved
if not pagetext:
pagetext = u'\n'
return pagetext
def group_add(request, grouppage, accounts, create=False, usercheck=True):
_ = request.getText
success, msg = check_grouppage(request, grouppage, createcheck=not create)
if not success:
raise GroupException(msg + "(%s)" % (grouppage))
if usercheck:
check_users(request, accounts)
page = PageEditor(request, grouppage)
if page.exists():
members = request.groups[grouppage].members | request.groups[grouppage].member_groups
elif create:
members = set([])
else:
raise GroupException(_('Group does not exist: ') + grouppage)
for item in accounts:
if item in members:
raise GroupException(item + _(' already in group: ') + grouppage)
pagetext = page.get_raw_body()
if not pagetext:
pagetext = ''
newtext = _group_add(request, pagetext, accounts)
msg = page.saveText(newtext, 0,
comment="Added to group: " + ', '.join(accounts))
newmembers = request.groups[grouppage].members | request.groups[grouppage].member_groups
if not newmembers == members | set(accounts):
msg = page.saveText(pagetext, 0,
comment="Reverting due to problems in group operation.")
raise GroupException(_('Add unsuccessful for unknown reasons.'))
return True, msg
def group_del(request, grouppage, accounts):
_ = request.getText
success, msg = check_grouppage(request, grouppage)
if not success:
raise GroupException(msg + "(%s)" % (grouppage))
members = request.groups[grouppage].members | request.groups[grouppage].member_groups
for name in accounts:
if name not in members:
raise GroupException(name + _(' not in group: ') + grouppage)
page = PageEditor(request, grouppage)
pagetext = page.get_raw_body()
newtext = _group_del(request, pagetext, accounts)
msg = page.saveText(newtext, 0,
comment="Deleted from group: " +
', '.join(accounts))
newmembers = request.groups[grouppage].members | request.groups[grouppage].member_groups
if not newmembers == members - set(accounts):
msg = page.saveText(pagetext, 0,
comment="Reverting due to problems in group operation.")
raise GroupException(_('Delete unsuccessful for unknown reasons.'))
return True, msg
def group_rename(request, grouppage, accounts):
_ = request.getText
success, msg = check_grouppage(request, grouppage)
if not success:
raise GroupException(msg + "(%s)" % (grouppage))
check_users(request, accounts[::2])
if len(accounts) % 2:
raise ValueError(_('Wrong number of arguments for rename.'))
page = PageEditor(request, grouppage)
if page.exists():
members = request.groups[grouppage].members
else:
raise GroupException(_('Group does not exist: ') + grouppage)
for uname in accounts[::2]:
if uname not in members:
raise GroupException(_('User not in group: ') + uname)
page = PageEditor(request, grouppage)
pagetext = page.get_raw_body()
newtext = _group_rename(request, pagetext, accounts)
msg = page.saveText(newtext, 0,
comment="Changed group members: " +
' -> '.join(accounts))
newmembers = request.groups[grouppage].members
testmembers = members.copy()
for user1, user2 in zip(accounts[::2], accounts[1::2]):
testmembers.remove(user1)
testmembers.add(user2)
if testmembers != newmembers:
msg = page.saveText(pagetext, 0,
comment="Reverting due to problems in group operation.")
raise GroupException(_('Rename unsuccessful for unknown reasons.'))
return True, msg
if __name__ == "__main__":
_test()