Mercurial > libervia-backend
view src/tools/common/data_format.py @ 2466:d2e16a7466a0
template: date filter improvments:
new format (i.e. format after date limit has been reached) can now be specified.
0 can now be used for "auto_limit" to use last midnight as date limit.
A new "auto_day" format can be used as shortcut to use last midnight as date limit, short datetime for old format, and time only for new format.
author | Goffi <goffi@goffi.org> |
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date | Wed, 03 Jan 2018 00:29:18 +0100 |
parents | 8b37a62336c3 |
children | 0046283a285d |
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#!/usr/bin/env python2 # -*- coding: utf-8 -*- # SAT: a jabber client # Copyright (C) 2009-2017 Jérôme Poisson (goffi@goffi.org) # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU Affero 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 Affero General Public License for more details. # You should have received a copy of the GNU Affero General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. """ tools common to backend and frontends """ # FIXME: json may be more appropriate than manual serialising like done here from sat.core import exceptions def dict2iter(name, dict_, pop=False): """iterate into a list serialised in a dict name is the name of the key. Serialisation is done with [name] [name#1] [name#2] and so on e.g.: if name is 'group', keys are group, group#1, group#2, ... iteration stop at first missing increment Empty values are possible @param name(unicode): name of the key @param dict_(dict): dictionary with the serialised list @param pop(bool): if True, remove the value from dict @return iter: iterate through the deserialised list """ if pop: get=lambda d,k: d.pop(k) else: get=lambda d,k: d[k] try: yield get(dict_,name) except KeyError: return else: idx = 1 while True: try: yield get(dict_,u'{}#{}'.format(name, idx)) except KeyError: return else: idx += 1 def dict2iterdict(name, dict_, extra_keys, pop=False): """like dict2iter but yield dictionaries params are like in [dict2iter], extra_keys is used for extra dict keys. e.g. dict2iterdict(comments, mb_data, ('node', 'service')) will yield dicts like: {u'comments': u'value1', u'node': u'value2', u'service': u'value3'} """ # FIXME: this format seem overcomplicated, it may be more appropriate to use json here if pop: get=lambda d,k: d.pop(k) else: get=lambda d,k: d[k] for idx, main_value in enumerate(dict2iter(name, dict_, pop=pop)): ret = {name: main_value} for k in extra_keys: ret[k] = get(dict_, u'{}{}_{}'.format(name, (u'#' + unicode(idx)) if idx else u'', k)) yield ret def iter2dict(name, iter_, dict_=None, check_conflict=True): """Fill a dict with values from an iterable name is used to serialise iter_, in the same way as in [dict2iter] Build from the tags a dict using the microblog data format. @param name(unicode): key to use for serialisation e.g. "group" to have keys "group", "group#1", "group#2", ... @param iter_(iterable): values to store @param dict_(None, dict): dictionary to fill, or None to create one @param check_conflict(bool): if True, raise an exception in case of existing key @return (dict): filled dict, or newly created one @raise exceptions.ConflictError: a needed key already exists """ if dict_ is None: dict_ = {} for idx, value in enumerate(iter_): if idx == 0: key = name else: key = u'{}#{}'.format(name, idx) if check_conflict and key in dict_: raise exceptions.ConflictError dict_[key] = value return dict def getSubDict(name, dict_, sep=u'_'): """get a sub dictionary from a serialised dictionary look for keys starting with name, and create a dict with it eg.: if "key" is looked for, {'html': 1, 'key_toto': 2, 'key_titi': 3} will return: {None: 1, toto: 2, titi: 3} @param name(unicode): name of the key @param dict_(dict): dictionary with the serialised list @param sep(unicode): separator used between name and subkey @return iter: iterate through the deserialised items """ for k,v in dict_.iteritems(): if k.startswith(name): if k == name: yield None, v else: if k[len(name)] != sep: continue else: yield k[len(name)+1:], v