utils.py
author Pierre-Yves David <pierre-yves.david@logilab.fr>
Fri, 21 Jun 2013 13:42:19 +0200
changeset 9055 2567b7d04e49
parent 8941 7b26fe71404f
child 9232 430a7dc5e2cf
permissions -rw-r--r--
[client-connection] add a sessionid property for dbapi compatibility To ease transition from dbapi to repoapi we need the ClientConnection to be as compatible as possible with the dbapi. Adding this method goes in this direction. It'll get deprecated in the deprecation wave that will conclude the repoapi refactoring. related to #2503918
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# copyright 2003-2011 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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# CubicWeb 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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from __future__ import division, with_statement
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__docformat__ = "restructuredtext en"
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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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import re
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from operator import itemgetter
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from inspect import getargspec
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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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from threading import Lock
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from urlparse import urlparse
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from logging import getLogger
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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 support_args(callable, *argnames):
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    """return true if the callable support given argument names"""
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    if isinstance(callable, type):
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        callable = callable.__init__
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    argspec = getargspec(callable)
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    if argspec[2]:
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        return True
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    for argname in argnames:
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        if argname not in argspec[0]:
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            return False
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    return True
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class wrap_on_write(object):
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    """ Sometimes it is convenient to NOT write some container element
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    if it happens that there is nothing to be written within,
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    but this cannot be known beforehand.
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    Hence one can do this:
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    .. sourcecode:: python
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       with wrap_on_write(w, '<div class="foo">', '</div>') as wow:
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           component.render_stuff(wow)
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    """
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    def __init__(self, w, tag, closetag=None):
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        self.written = False
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        self.tag = unicode(tag)
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        self.closetag = closetag
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        self.w = w
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    def __enter__(self):
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        return self
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    def __call__(self, data):
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        if self.written is False:
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            self.w(self.tag)
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            self.written = True
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        self.w(data)
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    def __exit__(self, exctype, value, traceback):
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        if self.written is True:
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            if self.closetag:
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                self.w(unicode(self.closetag))
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            else:
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                self.w(self.tag.replace('<', '</', 1))
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0
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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, rtype, _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, rtype):
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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, rtype, _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 than a given
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    size.
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    when the list is full and a new element is added, the first element of the
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    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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    >>> l
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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 __repr__(self):
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        return '<cubicweb.utils.RepeatList at %s item=%s size=%s>' % (
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            id(self), self._item, self._size)
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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 __delitem__(self, idc):
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        assert self._size > 0
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        self._size -= 1
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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'''if (typeof(pageDataUnloaded) == 'undefined') {
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    jQuery(window).unload(unloadPageData);
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    pageDataUnloaded = true;
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}'''
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    script_opening = u'<script type="text/javascript">\n'
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    script_closing = u'\n</script>'
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    def __init__(self, req):
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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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        self._cw = req
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        self.datadir_url = req.datadir_url
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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) )
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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):
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        self.add_post_inline_script(u"""$(cw).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='all'):
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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) )
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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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        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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    def concat_urls(self, urls):
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        """concatenates urls into one url usable by Apache mod_concat
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        This method returns the url without modifying it if there is only
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        one element in the list
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        :param urls: list of local urls/filenames to concatenate
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        """
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        if len(urls) == 1:
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            return urls[0]
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        len_prefix = len(self.datadir_url)
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        concated = u','.join(url[len_prefix:] for url in urls)
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        return (u'%s??%s' % (self.datadir_url, concated))
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    def group_urls(self, urls_spec):
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        """parses urls_spec in order to generate concatenated urls
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        for js and css includes
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        This method checks if the file is local and if it shares options
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        with direct neighbors
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        :param urls_spec: entire list of urls/filenames to inspect
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        """
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        concatable = []
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        prev_islocal = False
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        prev_key = None
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        for url, key in urls_spec:
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            islocal = url.startswith(self.datadir_url)
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            if concatable and (islocal != prev_islocal or key != prev_key):
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                yield (self.concat_urls(concatable), prev_key)
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                del concatable[:]
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            if not islocal:
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                yield (url, key)
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            else:
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                concatable.append(url)
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            prev_islocal = islocal
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            prev_key = key
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        if concatable:
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            yield (self.concat_urls(concatable), prev_key)
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    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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parents:
diff changeset
   341
        w = self.write
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   342
        # 1/ variable declaration if any
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   343
        if self.jsvars:
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7b26fe71404f drop xhtml content-type support (closes #2065651)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8795
diff changeset
   344
            w(self.script_opening)
3838
9cc134372bf8 [web] safety belt to avoid overriding pageid with loadxhtml()
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 3789
diff changeset
   345
            for var, value, override in self.jsvars:
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
   346
                vardecl = u'%s = %s;' % (var, json.dumps(value))
3838
9cc134372bf8 [web] safety belt to avoid overriding pageid with loadxhtml()
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 3789
diff changeset
   347
                if not override:
9cc134372bf8 [web] safety belt to avoid overriding pageid with loadxhtml()
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 3789
diff changeset
   348
                    vardecl = (u'if (typeof %s == "undefined") {%s}' %
9cc134372bf8 [web] safety belt to avoid overriding pageid with loadxhtml()
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 3789
diff changeset
   349
                               (var, vardecl))
9cc134372bf8 [web] safety belt to avoid overriding pageid with loadxhtml()
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parents: 3789
diff changeset
   350
                w(vardecl + u'\n')
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7b26fe71404f drop xhtml content-type support (closes #2065651)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8795
diff changeset
   351
            w(self.script_closing)
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   352
        # 2/ css files
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a3f9ba4d44eb [web] add option to make resources-concat optional (implements #1910615)
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parents: 7660
diff changeset
   353
        ie_cssfiles = ((x, (y, z)) for x, y, z in self.ie_cssfiles)
a3f9ba4d44eb [web] add option to make resources-concat optional (implements #1910615)
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7660
diff changeset
   354
        if self.datadir_url and self._cw.vreg.config['concat-resources']:
a3f9ba4d44eb [web] add option to make resources-concat optional (implements #1910615)
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7660
diff changeset
   355
            cssfiles = self.group_urls(self.cssfiles)
a3f9ba4d44eb [web] add option to make resources-concat optional (implements #1910615)
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7660
diff changeset
   356
            ie_cssfiles = self.group_urls(ie_cssfiles)
a3f9ba4d44eb [web] add option to make resources-concat optional (implements #1910615)
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7660
diff changeset
   357
            jsfiles = (x for x, _ in self.group_urls((x, None) for x in self.jsfiles))
a3f9ba4d44eb [web] add option to make resources-concat optional (implements #1910615)
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parents: 7660
diff changeset
   358
        else:
a3f9ba4d44eb [web] add option to make resources-concat optional (implements #1910615)
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parents: 7660
diff changeset
   359
            cssfiles = self.cssfiles
a3f9ba4d44eb [web] add option to make resources-concat optional (implements #1910615)
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7660
diff changeset
   360
            jsfiles = self.jsfiles
a3f9ba4d44eb [web] add option to make resources-concat optional (implements #1910615)
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7660
diff changeset
   361
        for cssfile, media in cssfiles:
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   362
            w(u'<link rel="stylesheet" type="text/css" media="%s" href="%s"/>\n' %
3091
c3d73cecb29e [html-head] escape js and css urls
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 2678
diff changeset
   363
              (media, xml_escape(cssfile)))
0
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parents:
diff changeset
   364
        # 3/ ie css if necessary
7762
a3f9ba4d44eb [web] add option to make resources-concat optional (implements #1910615)
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7660
diff changeset
   365
        if self.ie_cssfiles: # use self.ie_cssfiles because `ie_cssfiles` is a genexp
a3f9ba4d44eb [web] add option to make resources-concat optional (implements #1910615)
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7660
diff changeset
   366
            for cssfile, (media, iespec) in ie_cssfiles:
4860
cedb6afdb7da [web] fix #736332: iespec functionality for add_css
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 4859
diff changeset
   367
                w(u'<!--%s>\n' % iespec)
0
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parents:
diff changeset
   368
                w(u'<link rel="stylesheet" type="text/css" media="%s" href="%s"/>\n' %
3091
c3d73cecb29e [html-head] escape js and css urls
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 2678
diff changeset
   369
                  (media, xml_escape(cssfile)))
0
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parents:
diff changeset
   370
            w(u'<![endif]--> \n')
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parents:
diff changeset
   371
        # 4/ js files
7762
a3f9ba4d44eb [web] add option to make resources-concat optional (implements #1910615)
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7660
diff changeset
   372
        for jsfile in jsfiles:
7649
ede740bd7077 [ajax, IE] rewrite some code to avoid duplicated evaluation with IE
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7575
diff changeset
   373
            if skiphead:
ede740bd7077 [ajax, IE] rewrite some code to avoid duplicated evaluation with IE
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7575
diff changeset
   374
                # Don't insert <script> tags directly as they would be
ede740bd7077 [ajax, IE] rewrite some code to avoid duplicated evaluation with IE
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7575
diff changeset
   375
                # interpreted directly by some browsers (e.g. IE).
ede740bd7077 [ajax, IE] rewrite some code to avoid duplicated evaluation with IE
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7575
diff changeset
   376
                # Use <pre class="script"> tags instead and let
ede740bd7077 [ajax, IE] rewrite some code to avoid duplicated evaluation with IE
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7575
diff changeset
   377
                # `loadAjaxHtmlHead` handle the script insertion / execution.
ede740bd7077 [ajax, IE] rewrite some code to avoid duplicated evaluation with IE
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7575
diff changeset
   378
                w(u'<pre class="script" src="%s"></pre>\n' %
ede740bd7077 [ajax, IE] rewrite some code to avoid duplicated evaluation with IE
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7575
diff changeset
   379
                  xml_escape(jsfile))
ede740bd7077 [ajax, IE] rewrite some code to avoid duplicated evaluation with IE
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7575
diff changeset
   380
                # FIXME: a probably better implementation might be to add
ede740bd7077 [ajax, IE] rewrite some code to avoid duplicated evaluation with IE
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7575
diff changeset
   381
                #        JS or CSS urls in a JS list that loadAjaxHtmlHead
ede740bd7077 [ajax, IE] rewrite some code to avoid duplicated evaluation with IE
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7575
diff changeset
   382
                #        would iterate on and postprocess:
ede740bd7077 [ajax, IE] rewrite some code to avoid duplicated evaluation with IE
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7575
diff changeset
   383
                #            cw._ajax_js_scripts.push('myscript.js')
ede740bd7077 [ajax, IE] rewrite some code to avoid duplicated evaluation with IE
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7575
diff changeset
   384
                #        Then, in loadAjaxHtmlHead, do something like:
ede740bd7077 [ajax, IE] rewrite some code to avoid duplicated evaluation with IE
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7575
diff changeset
   385
                #            jQuery.each(cw._ajax_js_script, jQuery.getScript)
ede740bd7077 [ajax, IE] rewrite some code to avoid duplicated evaluation with IE
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7575
diff changeset
   386
            else:
ede740bd7077 [ajax, IE] rewrite some code to avoid duplicated evaluation with IE
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7575
diff changeset
   387
                w(u'<script type="text/javascript" src="%s"></script>\n' %
ede740bd7077 [ajax, IE] rewrite some code to avoid duplicated evaluation with IE
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7575
diff changeset
   388
                  xml_escape(jsfile))
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   389
        # 5/ post inlined scripts (i.e. scripts depending on other JS files)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   390
        if self.post_inlined_scripts:
7649
ede740bd7077 [ajax, IE] rewrite some code to avoid duplicated evaluation with IE
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7575
diff changeset
   391
            if skiphead:
ede740bd7077 [ajax, IE] rewrite some code to avoid duplicated evaluation with IE
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7575
diff changeset
   392
                for script in self.post_inlined_scripts:
ede740bd7077 [ajax, IE] rewrite some code to avoid duplicated evaluation with IE
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7575
diff changeset
   393
                    w(u'<pre class="script">')
7660
a1506b5306cc closes #1826543: error on some ajax_replace_url call
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7649
diff changeset
   394
                    w(xml_escape(script))
7649
ede740bd7077 [ajax, IE] rewrite some code to avoid duplicated evaluation with IE
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7575
diff changeset
   395
                    w(u'</pre>')
ede740bd7077 [ajax, IE] rewrite some code to avoid duplicated evaluation with IE
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7575
diff changeset
   396
            else:
8941
7b26fe71404f drop xhtml content-type support (closes #2065651)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8795
diff changeset
   397
                w(self.script_opening)
7649
ede740bd7077 [ajax, IE] rewrite some code to avoid duplicated evaluation with IE
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7575
diff changeset
   398
                w(u'\n\n'.join(self.post_inlined_scripts))
8941
7b26fe71404f drop xhtml content-type support (closes #2065651)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8795
diff changeset
   399
                w(self.script_closing)
643
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
   400
        header = super(HTMLHead, self).getvalue()
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
   401
        if skiphead:
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
   402
            return header
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
   403
        return u'<head>\n%s</head>\n' % header
1549
f87561822e27 some basic calendar manipulation functions, delete-trailing-whitespace
sylvain.thenault@logilab.fr
parents: 1397
diff changeset
   404
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   405
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   406
class HTMLStream(object):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   407
    """represents a HTML page.
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   408
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   409
    This is used my main templates so that HTML headers can be added
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   410
    at any time during the page generation.
1549
f87561822e27 some basic calendar manipulation functions, delete-trailing-whitespace
sylvain.thenault@logilab.fr
parents: 1397
diff changeset
   411
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   412
    HTMLStream uses the (U)StringIO interface to be compliant with
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   413
    existing code.
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   414
    """
1549
f87561822e27 some basic calendar manipulation functions, delete-trailing-whitespace
sylvain.thenault@logilab.fr
parents: 1397
diff changeset
   415
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   416
    def __init__(self, req):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   417
        # stream for <head>
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   418
        self.head = req.html_headers
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   419
        # main stream
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   420
        self.body = UStringIO()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   421
        self.doctype = u''
8941
7b26fe71404f drop xhtml content-type support (closes #2065651)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8795
diff changeset
   422
        self._htmlattrs = [('lang', req.lang)]
3094
978ed8c2c0e4 [googlemap] #344872 set request content-type to text/html
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 3091
diff changeset
   423
        # keep main_stream's reference on req for easier text/html demoting
978ed8c2c0e4 [googlemap] #344872 set request content-type to text/html
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 3091
diff changeset
   424
        req.main_stream = self
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   425
8941
7b26fe71404f drop xhtml content-type support (closes #2065651)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8795
diff changeset
   426
    @deprecated('[3.17] there are no namespaces in html, xhtml is not served any longer')
7187
496f51b92154 [views] extend HTMLStream API to be able to change doctype / xmldecl
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7140
diff changeset
   427
    def add_namespace(self, prefix, uri):
8941
7b26fe71404f drop xhtml content-type support (closes #2065651)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8795
diff changeset
   428
        pass
7187
496f51b92154 [views] extend HTMLStream API to be able to change doctype / xmldecl
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7140
diff changeset
   429
8941
7b26fe71404f drop xhtml content-type support (closes #2065651)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8795
diff changeset
   430
    @deprecated('[3.17] there are no namespaces in html, xhtml is not served any longer')
7187
496f51b92154 [views] extend HTMLStream API to be able to change doctype / xmldecl
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7140
diff changeset
   431
    def set_namespaces(self, namespaces):
8941
7b26fe71404f drop xhtml content-type support (closes #2065651)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8795
diff changeset
   432
        pass
7187
496f51b92154 [views] extend HTMLStream API to be able to change doctype / xmldecl
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7140
diff changeset
   433
496f51b92154 [views] extend HTMLStream API to be able to change doctype / xmldecl
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7140
diff changeset
   434
    def add_htmlattr(self, attrname, attrvalue):
496f51b92154 [views] extend HTMLStream API to be able to change doctype / xmldecl
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7140
diff changeset
   435
        self._htmlattrs.append( (attrname, attrvalue) )
496f51b92154 [views] extend HTMLStream API to be able to change doctype / xmldecl
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7140
diff changeset
   436
496f51b92154 [views] extend HTMLStream API to be able to change doctype / xmldecl
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7140
diff changeset
   437
    def set_htmlattrs(self, attrs):
496f51b92154 [views] extend HTMLStream API to be able to change doctype / xmldecl
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7140
diff changeset
   438
        self._htmlattrs = attrs
496f51b92154 [views] extend HTMLStream API to be able to change doctype / xmldecl
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7140
diff changeset
   439
8941
7b26fe71404f drop xhtml content-type support (closes #2065651)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8795
diff changeset
   440
    def set_doctype(self, doctype, reset_xmldecl=None):
7187
496f51b92154 [views] extend HTMLStream API to be able to change doctype / xmldecl
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7140
diff changeset
   441
        self.doctype = doctype
8941
7b26fe71404f drop xhtml content-type support (closes #2065651)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8795
diff changeset
   442
        if reset_xmldecl is not None:
7b26fe71404f drop xhtml content-type support (closes #2065651)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8795
diff changeset
   443
            warn('[3.17] xhtml is no more supported',
7b26fe71404f drop xhtml content-type support (closes #2065651)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8795
diff changeset
   444
                 DeprecationWarning, stacklevel=2)
7187
496f51b92154 [views] extend HTMLStream API to be able to change doctype / xmldecl
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7140
diff changeset
   445
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   446
    def write(self, data):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   447
        """StringIO interface: this method will be assigned to self.w
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   448
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   449
        self.body.write(data)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   450
7187
496f51b92154 [views] extend HTMLStream API to be able to change doctype / xmldecl
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7140
diff changeset
   451
    @property
496f51b92154 [views] extend HTMLStream API to be able to change doctype / xmldecl
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7140
diff changeset
   452
    def htmltag(self):
496f51b92154 [views] extend HTMLStream API to be able to change doctype / xmldecl
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7140
diff changeset
   453
        attrs = ' '.join('%s="%s"' % (attr, xml_escape(value))
8941
7b26fe71404f drop xhtml content-type support (closes #2065651)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8795
diff changeset
   454
                         for attr, value in self._htmlattrs)
7187
496f51b92154 [views] extend HTMLStream API to be able to change doctype / xmldecl
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7140
diff changeset
   455
        if attrs:
496f51b92154 [views] extend HTMLStream API to be able to change doctype / xmldecl
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7140
diff changeset
   456
            return '<html %s>' % attrs
496f51b92154 [views] extend HTMLStream API to be able to change doctype / xmldecl
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7140
diff changeset
   457
        return '<html>'
496f51b92154 [views] extend HTMLStream API to be able to change doctype / xmldecl
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7140
diff changeset
   458
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   459
    def getvalue(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   460
        """writes HTML headers, closes </head> tag and writes HTML body"""
8941
7b26fe71404f drop xhtml content-type support (closes #2065651)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8795
diff changeset
   461
        return u'%s\n%s\n%s\n%s\n</html>' % (self.doctype,
7b26fe71404f drop xhtml content-type support (closes #2065651)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8795
diff changeset
   462
                                             self.htmltag,
7b26fe71404f drop xhtml content-type support (closes #2065651)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8795
diff changeset
   463
                                             self.head.getvalue(),
7b26fe71404f drop xhtml content-type support (closes #2065651)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8795
diff changeset
   464
                                             self.body.getvalue())
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   465
3371
762a7bc3b73d this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3364
diff changeset
   466
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
   467
    # may not be there if cubicweb-web not installed
5940
0e3ae19b181a [uilib] refactor json_dumps code organization
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5883
diff changeset
   468
    if sys.version_info < (2, 6):
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
   469
        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
   470
    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
   471
        import json
3371
762a7bc3b73d this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3364
diff changeset
   472
except ImportError:
7575
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   473
    json_dumps = JSString = None
5940
0e3ae19b181a [uilib] refactor json_dumps code organization
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5883
diff changeset
   474
3371
762a7bc3b73d this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3364
diff changeset
   475
else:
6134
272cfcc10a28 use logilab.common.date.ustrftime in json encoder to work around datetime.strftime limitation on dates < 1900
Alexandre Fayolle <alexandre.fayolle@logilab.fr>
parents: 6044
diff changeset
   476
    from logilab.common.date import ustrftime
6176
33ba2c1dbf10 [cw.utils] avoid spurious warning, ustrftime may be globally imported
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6134
diff changeset
   477
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
   478
    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
   479
        """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
   480
3371
762a7bc3b73d this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3364
diff changeset
   481
        def default(self, obj):
7876
df15d194a134 [views] implement json / jsonp export views (closes #1942658)
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7762
diff changeset
   482
            if hasattr(obj, '__json_encode__'):
df15d194a134 [views] implement json / jsonp export views (closes #1942658)
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7762
diff changeset
   483
                return obj.__json_encode__()
4466
8b0ca7904820 moved generic datetime manipulation function to lgc
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4335
diff changeset
   484
            if isinstance(obj, datetime.datetime):
6134
272cfcc10a28 use logilab.common.date.ustrftime in json encoder to work around datetime.strftime limitation on dates < 1900
Alexandre Fayolle <alexandre.fayolle@logilab.fr>
parents: 6044
diff changeset
   485
                return ustrftime(obj, '%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
   486
            elif isinstance(obj, datetime.date):
6134
272cfcc10a28 use logilab.common.date.ustrftime in json encoder to work around datetime.strftime limitation on dates < 1900
Alexandre Fayolle <alexandre.fayolle@logilab.fr>
parents: 6044
diff changeset
   487
                return ustrftime(obj, '%Y/%m/%d')
4466
8b0ca7904820 moved generic datetime manipulation function to lgc
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4335
diff changeset
   488
            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
   489
                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
   490
            elif isinstance(obj, datetime.timedelta):
4000
4b16a7c01a25 fix jsonization of interval
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3902
diff changeset
   491
                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
   492
            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
   493
                return float(obj)
762a7bc3b73d this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3364
diff changeset
   494
            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
   495
                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
   496
            except TypeError:
762a7bc3b73d this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3364
diff changeset
   497
                # 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
   498
                # 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
   499
                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
   500
7876
df15d194a134 [views] implement json / jsonp export views (closes #1942658)
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7762
diff changeset
   501
    def json_dumps(value, **kwargs):
df15d194a134 [views] implement json / jsonp export views (closes #1942658)
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 7762
diff changeset
   502
        return json.dumps(value, cls=CubicWebJsonEncoder, **kwargs)
5940
0e3ae19b181a [uilib] refactor json_dumps code organization
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5883
diff changeset
   503
4879
56c16efedc51 deprecates merge_dicts
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4844
diff changeset
   504
7575
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   505
    class JSString(str):
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   506
        """use this string sub class in values given to :func:`js_dumps` to
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   507
        insert raw javascript chain in some JSON string
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   508
        """
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   509
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   510
    def _dict2js(d, predictable=False):
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   511
        res = [key + ': ' + js_dumps(val, predictable)
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   512
               for key, val in d.iteritems()]
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   513
        return '{%s}' % ', '.join(res)
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   514
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   515
    def _list2js(l, predictable=False):
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   516
        return '[%s]' % ', '.join([js_dumps(val, predictable) for val in l])
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   517
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   518
    def js_dumps(something, predictable=False):
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   519
        """similar as :func:`json_dumps`, except values which are instances of
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   520
        :class:`JSString` are expected to be valid javascript and will be output
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   521
        as is
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   522
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   523
        >>> js_dumps({'hop': JSString('$.hop'), 'bar': None}, predictable=True)
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   524
        '{bar: null, hop: $.hop}'
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   525
        >>> js_dumps({'hop': '$.hop'})
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   526
        '{hop: "$.hop"}'
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   527
        >>> js_dumps({'hip': {'hop': JSString('momo')}})
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   528
        '{hip: {hop: momo}}'
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   529
        """
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   530
        if isinstance(something, dict):
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   531
            return _dict2js(something, predictable)
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   532
        if isinstance(something, list):
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   533
            return _list2js(something, predictable)
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   534
        if isinstance(something, JSString):
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   535
            return something
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   536
        return json_dumps(something)
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   537
7998
9ef285eb20f4 [utils] add a ``js_href`` function to generated proper javascript href
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 7990
diff changeset
   538
PERCENT_IN_URLQUOTE_RE = re.compile(r'%(?=[0-9a-fA-F]{2})')
9ef285eb20f4 [utils] add a ``js_href`` function to generated proper javascript href
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 7990
diff changeset
   539
def js_href(javascript_code):
9ef285eb20f4 [utils] add a ``js_href`` function to generated proper javascript href
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 7990
diff changeset
   540
    """Generate a "javascript: ..." string for an href attribute.
9ef285eb20f4 [utils] add a ``js_href`` function to generated proper javascript href
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 7990
diff changeset
   541
9ef285eb20f4 [utils] add a ``js_href`` function to generated proper javascript href
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 7990
diff changeset
   542
    Some % which may be interpreted in a href context will be escaped.
9ef285eb20f4 [utils] add a ``js_href`` function to generated proper javascript href
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 7990
diff changeset
   543
9ef285eb20f4 [utils] add a ``js_href`` function to generated proper javascript href
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 7990
diff changeset
   544
    In an href attribute, url-quotes-looking fragments are interpreted before
9ef285eb20f4 [utils] add a ``js_href`` function to generated proper javascript href
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 7990
diff changeset
   545
    being given to the javascript engine. Valid url quotes are in the form
9ef285eb20f4 [utils] add a ``js_href`` function to generated proper javascript href
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 7990
diff changeset
   546
    ``%xx`` with xx being a byte in hexadecimal form. This means that ``%toto``
9ef285eb20f4 [utils] add a ``js_href`` function to generated proper javascript href
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 7990
diff changeset
   547
    will be unaltered but ``%babar`` will be mangled because ``ba`` is the
9ef285eb20f4 [utils] add a ``js_href`` function to generated proper javascript href
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 7990
diff changeset
   548
    hexadecimal representation of 186.
9ef285eb20f4 [utils] add a ``js_href`` function to generated proper javascript href
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 7990
diff changeset
   549
9ef285eb20f4 [utils] add a ``js_href`` function to generated proper javascript href
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 7990
diff changeset
   550
    >>> js_href('alert("babar");')
9ef285eb20f4 [utils] add a ``js_href`` function to generated proper javascript href
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 7990
diff changeset
   551
    'javascript: alert("babar");'
9ef285eb20f4 [utils] add a ``js_href`` function to generated proper javascript href
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 7990
diff changeset
   552
    >>> js_href('alert("%babar");')
9ef285eb20f4 [utils] add a ``js_href`` function to generated proper javascript href
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 7990
diff changeset
   553
    'javascript: alert("%25babar");'
9ef285eb20f4 [utils] add a ``js_href`` function to generated proper javascript href
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 7990
diff changeset
   554
    >>> js_href('alert("%toto %babar");')
9ef285eb20f4 [utils] add a ``js_href`` function to generated proper javascript href
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 7990
diff changeset
   555
    'javascript: alert("%toto %25babar");'
9ef285eb20f4 [utils] add a ``js_href`` function to generated proper javascript href
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 7990
diff changeset
   556
    >>> js_href('alert("%1337%");')
9ef285eb20f4 [utils] add a ``js_href`` function to generated proper javascript href
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 7990
diff changeset
   557
    'javascript: alert("%251337%");'
9ef285eb20f4 [utils] add a ``js_href`` function to generated proper javascript href
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 7990
diff changeset
   558
    """
9ef285eb20f4 [utils] add a ``js_href`` function to generated proper javascript href
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 7990
diff changeset
   559
    return 'javascript: ' + PERCENT_IN_URLQUOTE_RE.sub(r'%25', javascript_code)
9ef285eb20f4 [utils] add a ``js_href`` function to generated proper javascript href
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 7990
diff changeset
   560
7575
335f14e8e5a7 [uilib] new js_dumps function allowing usage of bare js string (wrapped into JSString)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7569
diff changeset
   561
8682
20bd1cdf86ae [cwctl] fix cubicweb-ctl shell command (closes #2583919)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7998
diff changeset
   562
def parse_repo_uri(uri):
20bd1cdf86ae [cwctl] fix cubicweb-ctl shell command (closes #2583919)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7998
diff changeset
   563
    """ transform a command line uri into a (protocol, hostport, appid), e.g:
20bd1cdf86ae [cwctl] fix cubicweb-ctl shell command (closes #2583919)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7998
diff changeset
   564
    <myapp>                      -> 'inmemory', None, '<myapp>'
20bd1cdf86ae [cwctl] fix cubicweb-ctl shell command (closes #2583919)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7998
diff changeset
   565
    inmemory://<myapp>           -> 'inmemory', None, '<myapp>'
20bd1cdf86ae [cwctl] fix cubicweb-ctl shell command (closes #2583919)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7998
diff changeset
   566
    pyro://[host][:port]         -> 'pyro', 'host:port', None
20bd1cdf86ae [cwctl] fix cubicweb-ctl shell command (closes #2583919)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7998
diff changeset
   567
    zmqpickle://[host][:port]    -> 'zmqpickle', 'host:port', None
20bd1cdf86ae [cwctl] fix cubicweb-ctl shell command (closes #2583919)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7998
diff changeset
   568
    """
20bd1cdf86ae [cwctl] fix cubicweb-ctl shell command (closes #2583919)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7998
diff changeset
   569
    parseduri = urlparse(uri)
20bd1cdf86ae [cwctl] fix cubicweb-ctl shell command (closes #2583919)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7998
diff changeset
   570
    scheme = parseduri.scheme
20bd1cdf86ae [cwctl] fix cubicweb-ctl shell command (closes #2583919)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7998
diff changeset
   571
    if scheme == '':
20bd1cdf86ae [cwctl] fix cubicweb-ctl shell command (closes #2583919)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7998
diff changeset
   572
        return ('inmemory', None, parseduri.path)
20bd1cdf86ae [cwctl] fix cubicweb-ctl shell command (closes #2583919)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7998
diff changeset
   573
    if scheme == 'inmemory':
20bd1cdf86ae [cwctl] fix cubicweb-ctl shell command (closes #2583919)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7998
diff changeset
   574
        return (scheme, None, parseduri.netloc)
20bd1cdf86ae [cwctl] fix cubicweb-ctl shell command (closes #2583919)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7998
diff changeset
   575
    if scheme in ('pyro', 'pyroloc') or scheme.startswith('zmqpickle-'):
20bd1cdf86ae [cwctl] fix cubicweb-ctl shell command (closes #2583919)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7998
diff changeset
   576
        return (scheme, parseduri.netloc, parseduri.path)
20bd1cdf86ae [cwctl] fix cubicweb-ctl shell command (closes #2583919)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7998
diff changeset
   577
    raise NotImplementedError('URI protocol not implemented for `%s`' % uri)
20bd1cdf86ae [cwctl] fix cubicweb-ctl shell command (closes #2583919)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7998
diff changeset
   578
20bd1cdf86ae [cwctl] fix cubicweb-ctl shell command (closes #2583919)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7998
diff changeset
   579
20bd1cdf86ae [cwctl] fix cubicweb-ctl shell command (closes #2583919)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7998
diff changeset
   580
7954
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   581
logger = getLogger('cubicweb.utils')
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   582
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   583
class QueryCache(object):
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   584
    """ a minimalist dict-like object to be used by the querier
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   585
    and native source (replaces lgc.cache for this very usage)
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   586
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   587
    To be efficient it must be properly used. The usage patterns are
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   588
    quite specific to its current clients.
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   589
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   590
    The ceiling value should be sufficiently high, else it will be
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   591
    ruthlessly inefficient (there will be warnings when this happens).
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   592
    A good (high enough) value can only be set on a per-application
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   593
    value. A default, reasonnably high value is provided but tuning
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   594
    e.g `rql-cache-size` can certainly help.
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   595
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   596
    There are two kinds of elements to put in this cache:
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   597
    * frequently used elements
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   598
    * occasional elements
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   599
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   600
    The former should finish in the _permanent structure after some
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   601
    warmup.
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   602
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   603
    Occasional elements can be buggy requests (server-side) or
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   604
    end-user (web-ui provided) requests. These have to be cleaned up
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   605
    when they fill the cache, without evicting the usefull, frequently
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   606
    used entries.
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   607
    """
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   608
    # quite arbitrary, but we want to never
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   609
    # immortalize some use-a-little query
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   610
    _maxlevel = 15
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   611
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   612
    def __init__(self, ceiling=3000):
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   613
        self._max = ceiling
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   614
        # keys belonging forever to this cache
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   615
        self._permanent = set()
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   616
        # mapping of key (that can get wiped) to getitem count
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   617
        self._transient = {}
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   618
        self._data = {}
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   619
        self._lock = Lock()
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   620
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   621
    def __len__(self):
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   622
        with self._lock:
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   623
            return len(self._data)
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   624
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   625
    def __getitem__(self, k):
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   626
        with self._lock:
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   627
            if k in self._permanent:
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   628
                return self._data[k]
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   629
            v = self._transient.get(k, _MARKER)
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   630
            if v is _MARKER:
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   631
                self._transient[k] = 1
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   632
                return self._data[k]
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   633
            if v > self._maxlevel:
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   634
                self._permanent.add(k)
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   635
                self._transient.pop(k, None)
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   636
            else:
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   637
                self._transient[k] += 1
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   638
            return self._data[k]
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   639
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   640
    def __setitem__(self, k, v):
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   641
        with self._lock:
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   642
            if len(self._data) >= self._max:
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   643
                self._try_to_make_room()
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   644
            self._data[k] = v
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   645
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   646
    def pop(self, key, default=_MARKER):
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   647
        with self._lock:
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   648
            try:
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   649
                if default is _MARKER:
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   650
                    return self._data.pop(key)
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   651
                return self._data.pop(key, default)
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   652
            finally:
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   653
                if key in self._permanent:
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   654
                    self._permanent.remove(key)
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   655
                else:
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   656
                    self._transient.pop(key, None)
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   657
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   658
    def clear(self):
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   659
        with self._lock:
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   660
            self._clear()
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   661
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   662
    def _clear(self):
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   663
        self._permanent = set()
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   664
        self._transient = {}
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   665
        self._data = {}
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   666
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   667
    def _try_to_make_room(self):
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   668
        current_size = len(self._data)
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   669
        items = sorted(self._transient.items(), key=itemgetter(1))
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   670
        level = 0
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   671
        for k, v in items:
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   672
            self._data.pop(k, None)
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   673
            self._transient.pop(k, None)
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   674
            if v > level:
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   675
                datalen = len(self._data)
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   676
                if datalen == 0:
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   677
                    return
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   678
                if (current_size - datalen) / datalen > .1:
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   679
                    break
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   680
                level = v
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   681
        else:
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   682
            # we removed cruft but everything is permanent
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   683
            if len(self._data) >= self._max:
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   684
                logger.warning('Cache %s is full.' % id(self))
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   685
                self._clear()
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   686
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   687
    def _usage_report(self):
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   688
        with self._lock:
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   689
            return {'itemcount': len(self._data),
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   690
                    'transientcount': len(self._transient),
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   691
                    'permanentcount': len(self._permanent)}
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   692
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   693
    def popitem(self):
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   694
        raise NotImplementedError()
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   695
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   696
    def setdefault(self, key, default=None):
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   697
        raise NotImplementedError()
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   698
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   699
    def update(self, other):
a3d3220669d6 [cache] replace lgc.cache with something more appropriate (closes #1921713)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 7876
diff changeset
   700
        raise NotImplementedError()