utils.py
author Sylvain Thénault <sylvain.thenault@logilab.fr>
Wed, 28 Apr 2010 10:06:01 +0200
branchstable
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permissions -rw-r--r--
proper licensing information (LGPL-2.1). Hope I get it right this time.
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# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
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# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
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#
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# This file is part of CubicWeb.
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#
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# CubicWeb is free software: you can redistribute it and/or modify it under the
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# terms of the GNU Lesser General Public License as published by the Free
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# Software Foundation, either version 2.1 of the License, or (at your option)
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# any later version.
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#
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# logilab-common is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Lesser General Public License along
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# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
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"""Some utilities for CubicWeb server/clients.
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"""
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__docformat__ = "restructuredtext en"
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import os
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import sys
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import decimal
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import datetime
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import random
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from itertools import repeat
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from uuid import uuid4
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from warnings import warn
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ca11228a5268 import cleanup
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from logilab.mtconverter import xml_escape
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from logilab.common.deprecation import deprecated
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_MARKER = object()
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# initialize random seed from current time
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random.seed()
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def make_uid(key=None):
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    """Return a unique identifier string.
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    if specified, `key` is used to prefix the generated uid so it can be used
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    for instance as a DOM id or as sql table names.
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    See uuid.uuid4 documentation for the shape of the generated identifier, but
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    this is basicallly a 32 bits hexadecimal string.
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    """
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    if key is None:
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        return uuid4().hex
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    return str(key) + uuid4().hex
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def dump_class(cls, clsname):
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    """create copy of a class by creating an empty class inheriting
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    from the given cls.
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    Those class will be used as place holder for attribute and relation
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    description
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    """
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    # type doesn't accept unicode name
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    # return type.__new__(type, str(clsname), (cls,), {})
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    # __autogenerated__ attribute is just a marker
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    return type(str(clsname), (cls,), {'__autogenerated__': True,
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                                       '__doc__': cls.__doc__,
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                                       '__module__': cls.__module__})
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# use networkX instead ?
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# http://networkx.lanl.gov/reference/algorithms.traversal.html#module-networkx.algorithms.traversal.astar
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def transitive_closure_of(entity, relname, _seen=None):
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    """return transitive closure *for the subgraph starting from the given
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    entity* (eg 'parent' entities are not included in the results)
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    """
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    if _seen is None:
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        _seen = set()
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    _seen.add(entity.eid)
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    yield entity
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    for child in getattr(entity, relname):
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        if child.eid in _seen:
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            continue
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        for subchild in transitive_closure_of(child, relname, _seen):
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            yield subchild
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class SizeConstrainedList(list):
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    """simple list that makes sure the list does not get bigger
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    than a given size.
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    when the list is full and a new element is added, the first
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    element of the list is removed before appending the new one
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    >>> l = SizeConstrainedList(2)
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    >>> l.append(1)
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    >>> l.append(2)
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    >>> l
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    [1, 2]
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    >>> l.append(3)
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    [2, 3]
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    """
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    def __init__(self, maxsize):
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        self.maxsize = maxsize
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    def append(self, element):
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        if len(self) == self.maxsize:
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            del self[0]
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        super(SizeConstrainedList, self).append(element)
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    def extend(self, sequence):
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        super(SizeConstrainedList, self).extend(sequence)
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        keepafter = len(self) - self.maxsize
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        if keepafter > 0:
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            del self[:keepafter]
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    __iadd__ = extend
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class RepeatList(object):
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    """fake a list with the same element in each row"""
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    __slots__ = ('_size', '_item')
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    def __init__(self, size, item):
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        self._size = size
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        self._item = item
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    def __len__(self):
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        return self._size
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    def __nonzero__(self):
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        return self._size
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    def __iter__(self):
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        return repeat(self._item, self._size)
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    def __getitem__(self, index):
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        return self._item
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    def __getslice__(self, i, j):
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        # XXX could be more efficient, but do we bother?
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        return ([self._item] * self._size)[i:j]
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    def __add__(self, other):
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        if isinstance(other, RepeatList):
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            if other._item == self._item:
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                return RepeatList(self._size + other._size, self._item)
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            return ([self._item] * self._size) + other[:]
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        return ([self._item] * self._size) + other
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    def __radd__(self, other):
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        if isinstance(other, RepeatList):
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            if other._item == self._item:
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                return RepeatList(self._size + other._size, self._item)
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            return other[:] + ([self._item] * self._size)
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        return other[:] + ([self._item] * self._size)
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    def __eq__(self, other):
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        if isinstance(other, RepeatList):
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            return other._size == self.size and other._item == self.item
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        return self[:] == other
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    def pop(self, i):
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        self._size -= 1
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0
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class UStringIO(list):
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    """a file wrapper which automatically encode unicode string to an encoding
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    specifed in the constructor
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    """
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    def __nonzero__(self):
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        return True
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0
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    def write(self, value):
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        assert isinstance(value, unicode), u"unicode required not %s : %s"\
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                                     % (type(value).__name__, repr(value))
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        self.append(value)
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0
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    def getvalue(self):
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        return u''.join(self)
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    def __repr__(self):
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        return '<%s at %#x>' % (self.__class__.__name__, id(self))
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class HTMLHead(UStringIO):
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    """wraps HTML header's stream
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    Request objects use a HTMLHead instance to ease adding of
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    javascripts and stylesheets
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    """
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    js_unload_code = u'jQuery(window).unload(unloadPageData);'
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    def __init__(self):
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        super(HTMLHead, self).__init__()
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        self.jsvars = []
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        self.jsfiles = []
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        self.cssfiles = []
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        self.ie_cssfiles = []
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        self.post_inlined_scripts = []
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        self.pagedata_unload = False
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    def add_raw(self, rawheader):
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        self.write(rawheader)
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    def define_var(self, var, value, override=True):
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        """adds a javascript var declaration / assginment in the header
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        :param var: the variable name
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        :param value: the variable value (as a raw python value,
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                      it will be jsonized later)
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        :param override: if False, don't set the variable value if the variable
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                         is already defined. Default is True.
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        """
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        self.jsvars.append( (var, value, override) )
0
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    def add_post_inline_script(self, content):
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        self.post_inlined_scripts.append(content)
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    def add_onload(self, jscode, jsoncall=_MARKER):
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        if jsoncall is not _MARKER:
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            warn('[3.7] specifying jsoncall is not needed anymore',
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                 DeprecationWarning, stacklevel=2)
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        self.add_post_inline_script(u"""jQuery(CubicWeb).one('server-response', function(event) {
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%s});""" % jscode)
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0
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    def add_js(self, jsfile):
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        """adds `jsfile` to the list of javascripts used in the webpage
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        This function checks if the file has already been added
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        :param jsfile: the script's URL
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        """
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        if jsfile not in self.jsfiles:
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            self.jsfiles.append(jsfile)
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    def add_css(self, cssfile, media):
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        """adds `cssfile` to the list of javascripts used in the webpage
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        This function checks if the file has already been added
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        :param cssfile: the stylesheet's URL
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        """
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        if (cssfile, media) not in self.cssfiles:
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            self.cssfiles.append( (cssfile, media) )
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    def add_ie_css(self, cssfile, media='all', iespec=u'[if lt IE 8]'):
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        """registers some IE specific CSS"""
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        if (cssfile, media, iespec) not in self.ie_cssfiles:
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            self.ie_cssfiles.append( (cssfile, media, iespec) )
0
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    def add_unload_pagedata(self):
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        """registers onunload callback to clean page data on server"""
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   242
        if not self.pagedata_unload:
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            self.post_inlined_scripts.append(self.js_unload_code)
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            self.pagedata_unload = True
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616191014b8b [jsoncontroller] reorganize _html_exec (used by replacePageChunk) to output required css and js scripts
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   246
    def getvalue(self, skiphead=False):
0
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        """reimplement getvalue to provide a consistent (and somewhat browser
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        optimzed cf. http://stevesouders.com/cuzillion) order in external
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        resources declaration
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        """
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        w = self.write
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        # 1/ variable declaration if any
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        if self.jsvars:
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            w(u'<script type="text/javascript"><!--//--><![CDATA[//><!--\n')
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9cc134372bf8 [web] safety belt to avoid overriding pageid with loadxhtml()
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            for var, value, override in self.jsvars:
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809d3b5b3d31 [python2.6] careful: json-py provides a json package. We don't want that.
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                vardecl = u'%s = %s;' % (var, json.dumps(value))
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9cc134372bf8 [web] safety belt to avoid overriding pageid with loadxhtml()
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   257
                if not override:
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                    vardecl = (u'if (typeof %s == "undefined") {%s}' %
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   259
                               (var, vardecl))
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                w(vardecl + u'\n')
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   261
            w(u'//--><!]]></script>\n')
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        # 2/ css files
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        for cssfile, media in self.cssfiles:
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            w(u'<link rel="stylesheet" type="text/css" media="%s" href="%s"/>\n' %
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c3d73cecb29e [html-head] escape js and css urls
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              (media, xml_escape(cssfile)))
0
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        # 3/ ie css if necessary
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        if self.ie_cssfiles:
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cedb6afdb7da [web] fix #736332: iespec functionality for add_css
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   268
            for cssfile, media, iespec in self.ie_cssfiles:
cedb6afdb7da [web] fix #736332: iespec functionality for add_css
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diff changeset
   269
                w(u'<!--%s>\n' % iespec)
0
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                w(u'<link rel="stylesheet" type="text/css" media="%s" href="%s"/>\n' %
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c3d73cecb29e [html-head] escape js and css urls
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   271
                  (media, xml_escape(cssfile)))
0
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            w(u'<![endif]--> \n')
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        # 4/ js files
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        for jsfile in self.jsfiles:
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c3d73cecb29e [html-head] escape js and css urls
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parents: 2678
diff changeset
   275
            w(u'<script type="text/javascript" src="%s"></script>\n' %
c3d73cecb29e [html-head] escape js and css urls
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   276
              xml_escape(jsfile))
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        # 5/ post inlined scripts (i.e. scripts depending on other JS files)
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   278
        if self.post_inlined_scripts:
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   279
            w(u'<script type="text/javascript">\n')
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   280
            w(u'\n\n'.join(self.post_inlined_scripts))
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   281
            w(u'\n</script>\n')
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616191014b8b [jsoncontroller] reorganize _html_exec (used by replacePageChunk) to output required css and js scripts
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 28
diff changeset
   282
        header = super(HTMLHead, self).getvalue()
616191014b8b [jsoncontroller] reorganize _html_exec (used by replacePageChunk) to output required css and js scripts
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parents: 28
diff changeset
   283
        if skiphead:
616191014b8b [jsoncontroller] reorganize _html_exec (used by replacePageChunk) to output required css and js scripts
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diff changeset
   284
            return header
616191014b8b [jsoncontroller] reorganize _html_exec (used by replacePageChunk) to output required css and js scripts
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diff changeset
   285
        return u'<head>\n%s</head>\n' % header
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f87561822e27 some basic calendar manipulation functions, delete-trailing-whitespace
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parents: 1397
diff changeset
   286
0
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   288
class HTMLStream(object):
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    """represents a HTML page.
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    This is used my main templates so that HTML headers can be added
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    at any time during the page generation.
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parents: 1397
diff changeset
   293
0
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   294
    HTMLStream uses the (U)StringIO interface to be compliant with
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   295
    existing code.
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   296
    """
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f87561822e27 some basic calendar manipulation functions, delete-trailing-whitespace
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parents: 1397
diff changeset
   297
0
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    def __init__(self, req):
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   299
        # stream for <head>
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   300
        self.head = req.html_headers
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   301
        # main stream
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        self.body = UStringIO()
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   303
        self.doctype = u''
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diff changeset
   304
        # xmldecl and html opening tag
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diff changeset
   305
        self.xmldecl = u'<?xml version="1.0" encoding="%s"?>\n' % req.encoding
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   306
        self.htmltag = u'<html xmlns="http://www.w3.org/1999/xhtml" ' \
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   307
                       'xmlns:cubicweb="http://www.logilab.org/2008/cubicweb" ' \
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   308
                       'xml:lang="%s" lang="%s">' % (req.lang, req.lang)
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978ed8c2c0e4 [googlemap] #344872 set request content-type to text/html
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parents: 3091
diff changeset
   309
        # keep main_stream's reference on req for easier text/html demoting
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parents: 3091
diff changeset
   310
        req.main_stream = self
0
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parents:
diff changeset
   311
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   312
    def write(self, data):
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   313
        """StringIO interface: this method will be assigned to self.w
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   314
        """
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parents:
diff changeset
   315
        self.body.write(data)
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diff changeset
   316
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    def getvalue(self):
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   318
        """writes HTML headers, closes </head> tag and writes HTML body"""
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   319
        return u'%s\n%s\n%s\n%s\n%s\n</html>' % (self.xmldecl, self.doctype,
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   320
                                                 self.htmltag,
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   321
                                                 self.head.getvalue(),
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   322
                                                 self.body.getvalue())
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   323
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   324
4952
f32dcf3925d4 [web] get rid of spurious '[Errno 2] No such file or directory' on load
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diff changeset
   325
def _pdf_conversion_availability():
2935
e06b3eadef31 [views,pdf] minimal support for xhtml->pdf conversion
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parents: 2932
diff changeset
   326
    try:
2936
f35b64718d02 follow name change, fix pdf template registration, add debian package tracking
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 2935
diff changeset
   327
        import pysixt
2935
e06b3eadef31 [views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 2932
diff changeset
   328
    except ImportError:
e06b3eadef31 [views,pdf] minimal support for xhtml->pdf conversion
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parents: 2932
diff changeset
   329
        return False
e06b3eadef31 [views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 2932
diff changeset
   330
    from subprocess import Popen, STDOUT
4952
f32dcf3925d4 [web] get rid of spurious '[Errno 2] No such file or directory' on load
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 4860
diff changeset
   331
    if not os.path.isfile('/usr/bin/fop'):
f32dcf3925d4 [web] get rid of spurious '[Errno 2] No such file or directory' on load
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diff changeset
   332
        return False
2935
e06b3eadef31 [views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 2932
diff changeset
   333
    try:
e06b3eadef31 [views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 2932
diff changeset
   334
        Popen(['/usr/bin/fop', '-q'],
e06b3eadef31 [views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 2932
diff changeset
   335
              stdout=open(os.devnull, 'w'),
e06b3eadef31 [views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 2932
diff changeset
   336
              stderr=STDOUT)
e06b3eadef31 [views,pdf] minimal support for xhtml->pdf conversion
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parents: 2932
diff changeset
   337
    except OSError, e:
4952
f32dcf3925d4 [web] get rid of spurious '[Errno 2] No such file or directory' on load
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parents: 4860
diff changeset
   338
        getLogger('cubicweb').info('fop not usable (%s)', e)
2935
e06b3eadef31 [views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 2932
diff changeset
   339
        return False
e06b3eadef31 [views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 2932
diff changeset
   340
    return True
3231
3ee43e2f8560 [utils] provide a class to extend the default simplejson encoder to be able to dump standard yams attribute types
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 3101
diff changeset
   341
4952
f32dcf3925d4 [web] get rid of spurious '[Errno 2] No such file or directory' on load
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
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diff changeset
   342
def can_do_pdf_conversion(__answer_cache=[]):
f32dcf3925d4 [web] get rid of spurious '[Errno 2] No such file or directory' on load
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parents: 4860
diff changeset
   343
    """pdf conversion depends on
f32dcf3925d4 [web] get rid of spurious '[Errno 2] No such file or directory' on load
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 4860
diff changeset
   344
    * pysixt (python package)
f32dcf3925d4 [web] get rid of spurious '[Errno 2] No such file or directory' on load
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 4860
diff changeset
   345
    * fop 0.9x
f32dcf3925d4 [web] get rid of spurious '[Errno 2] No such file or directory' on load
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 4860
diff changeset
   346
f32dcf3925d4 [web] get rid of spurious '[Errno 2] No such file or directory' on load
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diff changeset
   347
    NOTE: actual check is done by _pdf_conversion_availability and
f32dcf3925d4 [web] get rid of spurious '[Errno 2] No such file or directory' on load
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diff changeset
   348
    result is cached
f32dcf3925d4 [web] get rid of spurious '[Errno 2] No such file or directory' on load
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
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diff changeset
   349
    """
f32dcf3925d4 [web] get rid of spurious '[Errno 2] No such file or directory' on load
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parents: 4860
diff changeset
   350
    if not __answer_cache: # first time, not in cache
f32dcf3925d4 [web] get rid of spurious '[Errno 2] No such file or directory' on load
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diff changeset
   351
        __answer_cache.append(_pdf_conversion_availability())
f32dcf3925d4 [web] get rid of spurious '[Errno 2] No such file or directory' on load
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diff changeset
   352
    return __answer_cache[0]
f32dcf3925d4 [web] get rid of spurious '[Errno 2] No such file or directory' on load
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
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diff changeset
   353
3371
762a7bc3b73d this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3364
diff changeset
   354
try:
5389
809d3b5b3d31 [python2.6] careful: json-py provides a json package. We don't want that.
Alexandre Fayolle <alexandre.fayolle@logilab.fr>
parents: 5377
diff changeset
   355
    # may not be there if cubicweb-web not installed
809d3b5b3d31 [python2.6] careful: json-py provides a json package. We don't want that.
Alexandre Fayolle <alexandre.fayolle@logilab.fr>
parents: 5377
diff changeset
   356
    if sys.version_info < (2,6):
809d3b5b3d31 [python2.6] careful: json-py provides a json package. We don't want that.
Alexandre Fayolle <alexandre.fayolle@logilab.fr>
parents: 5377
diff changeset
   357
        import simplejson as json
809d3b5b3d31 [python2.6] careful: json-py provides a json package. We don't want that.
Alexandre Fayolle <alexandre.fayolle@logilab.fr>
parents: 5377
diff changeset
   358
    else:
809d3b5b3d31 [python2.6] careful: json-py provides a json package. We don't want that.
Alexandre Fayolle <alexandre.fayolle@logilab.fr>
parents: 5377
diff changeset
   359
        import json
3371
762a7bc3b73d this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3364
diff changeset
   360
except ImportError:
762a7bc3b73d this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3364
diff changeset
   361
    pass
762a7bc3b73d this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3364
diff changeset
   362
else:
3231
3ee43e2f8560 [utils] provide a class to extend the default simplejson encoder to be able to dump standard yams attribute types
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 3101
diff changeset
   363
5389
809d3b5b3d31 [python2.6] careful: json-py provides a json package. We don't want that.
Alexandre Fayolle <alexandre.fayolle@logilab.fr>
parents: 5377
diff changeset
   364
    class CubicWebJsonEncoder(json.JSONEncoder):
5377
84d14ddfae13 [python2.6] prefer python2.6's builtin json module over simplejson
Alexandre Fayolle <alexandre.fayolle@logilab.fr>
parents: 5320
diff changeset
   365
        """define a json encoder to be able to encode yams std types"""
5320
848e92bb81cc [json] provide a custom json encoder for entities that includes eid in the json object
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 5077
diff changeset
   366
848e92bb81cc [json] provide a custom json encoder for entities that includes eid in the json object
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 5077
diff changeset
   367
        # _iterencode is the only entry point I've found to use a custom encode
848e92bb81cc [json] provide a custom json encoder for entities that includes eid in the json object
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 5077
diff changeset
   368
        # hook early enough: .default() is called if nothing else matched before,
848e92bb81cc [json] provide a custom json encoder for entities that includes eid in the json object
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 5077
diff changeset
   369
        # .iterencode() is called once on the main structure to encode and then
848e92bb81cc [json] provide a custom json encoder for entities that includes eid in the json object
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 5077
diff changeset
   370
        # never gets called again.
848e92bb81cc [json] provide a custom json encoder for entities that includes eid in the json object
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 5077
diff changeset
   371
        # For the record, our main use case is in FormValidateController with:
5389
809d3b5b3d31 [python2.6] careful: json-py provides a json package. We don't want that.
Alexandre Fayolle <alexandre.fayolle@logilab.fr>
parents: 5377
diff changeset
   372
        #   json.dumps((status, args, entity), cls=CubicWebJsonEncoder)
5320
848e92bb81cc [json] provide a custom json encoder for entities that includes eid in the json object
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 5077
diff changeset
   373
        # where we want all the entity attributes, including eid, to be part
848e92bb81cc [json] provide a custom json encoder for entities that includes eid in the json object
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 5077
diff changeset
   374
        # of the json object dumped.
848e92bb81cc [json] provide a custom json encoder for entities that includes eid in the json object
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 5077
diff changeset
   375
        # This would have once more been easier if Entity didn't extend dict.
848e92bb81cc [json] provide a custom json encoder for entities that includes eid in the json object
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 5077
diff changeset
   376
        def _iterencode(self, obj, markers=None):
848e92bb81cc [json] provide a custom json encoder for entities that includes eid in the json object
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 5077
diff changeset
   377
            if hasattr(obj, '__json_encode__'):
848e92bb81cc [json] provide a custom json encoder for entities that includes eid in the json object
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 5077
diff changeset
   378
                obj = obj.__json_encode__()
5389
809d3b5b3d31 [python2.6] careful: json-py provides a json package. We don't want that.
Alexandre Fayolle <alexandre.fayolle@logilab.fr>
parents: 5377
diff changeset
   379
            return json.JSONEncoder._iterencode(self, obj, markers)
5320
848e92bb81cc [json] provide a custom json encoder for entities that includes eid in the json object
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 5077
diff changeset
   380
3371
762a7bc3b73d this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3364
diff changeset
   381
        def default(self, obj):
4466
8b0ca7904820 moved generic datetime manipulation function to lgc
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4335
diff changeset
   382
            if isinstance(obj, datetime.datetime):
3371
762a7bc3b73d this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3364
diff changeset
   383
                return obj.strftime('%Y/%m/%d %H:%M:%S')
4466
8b0ca7904820 moved generic datetime manipulation function to lgc
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4335
diff changeset
   384
            elif isinstance(obj, datetime.date):
3371
762a7bc3b73d this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3364
diff changeset
   385
                return obj.strftime('%Y/%m/%d')
4466
8b0ca7904820 moved generic datetime manipulation function to lgc
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4335
diff changeset
   386
            elif isinstance(obj, datetime.time):
3371
762a7bc3b73d this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3364
diff changeset
   387
                return obj.strftime('%H:%M:%S')
4466
8b0ca7904820 moved generic datetime manipulation function to lgc
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4335
diff changeset
   388
            elif isinstance(obj, datetime.timedelta):
4000
4b16a7c01a25 fix jsonization of interval
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3902
diff changeset
   389
                return (obj.days * 24 * 60 * 60) + obj.seconds
3371
762a7bc3b73d this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3364
diff changeset
   390
            elif isinstance(obj, decimal.Decimal):
762a7bc3b73d this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3364
diff changeset
   391
                return float(obj)
762a7bc3b73d this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3364
diff changeset
   392
            try:
5389
809d3b5b3d31 [python2.6] careful: json-py provides a json package. We don't want that.
Alexandre Fayolle <alexandre.fayolle@logilab.fr>
parents: 5377
diff changeset
   393
                return json.JSONEncoder.default(self, obj)
3371
762a7bc3b73d this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3364
diff changeset
   394
            except TypeError:
762a7bc3b73d this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3364
diff changeset
   395
                # we never ever want to fail because of an unknown type,
762a7bc3b73d this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3364
diff changeset
   396
                # just return None in those cases.
762a7bc3b73d this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3364
diff changeset
   397
                return None
4652
7c41eea7fc30 restore 3.5 compat for date functions moved to lgc.date in 3.6 (closes #716055)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4511
diff changeset
   398
4879
56c16efedc51 deprecates merge_dicts
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4844
diff changeset
   399
56c16efedc51 deprecates merge_dicts
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4844
diff changeset
   400
@deprecated('[3.7] merge_dicts is deprecated')
56c16efedc51 deprecates merge_dicts
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4844
diff changeset
   401
def merge_dicts(dict1, dict2):
56c16efedc51 deprecates merge_dicts
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4844
diff changeset
   402
    """update a copy of `dict1` with `dict2`"""
56c16efedc51 deprecates merge_dicts
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4844
diff changeset
   403
    dict1 = dict(dict1)
56c16efedc51 deprecates merge_dicts
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4844
diff changeset
   404
    dict1.update(dict2)
56c16efedc51 deprecates merge_dicts
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4844
diff changeset
   405
    return dict1
56c16efedc51 deprecates merge_dicts
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4844
diff changeset
   406
4652
7c41eea7fc30 restore 3.5 compat for date functions moved to lgc.date in 3.6 (closes #716055)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4511
diff changeset
   407
from logilab.common import date
7c41eea7fc30 restore 3.5 compat for date functions moved to lgc.date in 3.6 (closes #716055)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4511
diff changeset
   408
_THIS_MOD_NS = globals()
7c41eea7fc30 restore 3.5 compat for date functions moved to lgc.date in 3.6 (closes #716055)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4511
diff changeset
   409
for funcname in ('date_range', 'todate', 'todatetime', 'datetime2ticks',
7c41eea7fc30 restore 3.5 compat for date functions moved to lgc.date in 3.6 (closes #716055)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4511
diff changeset
   410
                 'days_in_month', 'days_in_year', 'previous_month',
7c41eea7fc30 restore 3.5 compat for date functions moved to lgc.date in 3.6 (closes #716055)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4511
diff changeset
   411
                 'next_month', 'first_day', 'last_day', 'ustrftime',
7c41eea7fc30 restore 3.5 compat for date functions moved to lgc.date in 3.6 (closes #716055)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4511
diff changeset
   412
                 'strptime'):
7c41eea7fc30 restore 3.5 compat for date functions moved to lgc.date in 3.6 (closes #716055)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4511
diff changeset
   413
    msg = '[3.6] %s has been moved to logilab.common.date' % funcname
7c41eea7fc30 restore 3.5 compat for date functions moved to lgc.date in 3.6 (closes #716055)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4511
diff changeset
   414
    _THIS_MOD_NS[funcname] = deprecated(msg)(getattr(date, funcname))