author | Sylvain Thénault <sylvain.thenault@logilab.fr> |
Fri, 05 Feb 2010 11:54:23 +0100 | |
changeset 4466 | 8b0ca7904820 |
parent 4335 | 1314772c1183 |
child 4478 | 442fd69ff13b |
permissions | -rw-r--r-- |
0 | 1 |
"""Some utilities for CubicWeb server/clients. |
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:organization: Logilab |
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update copyright: welcome 2010
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parents:
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diff
changeset
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:copyright: 2001-2010 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2. |
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:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr |
1977
606923dff11b
big bunch of copyright / docstring update
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parents:
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:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses |
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""" |
8 |
__docformat__ = "restructuredtext en" |
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3091
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[html-head] escape js and css urls
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parents:
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diff
changeset
|
10 |
from logilab.mtconverter import xml_escape |
c3d73cecb29e
[html-head] escape js and css urls
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
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diff
changeset
|
11 |
|
709 | 12 |
import locale |
3316 | 13 |
import sys |
14 |
import decimal |
|
4466
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moved generic datetime manipulation function to lgc
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parents:
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diff
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|
15 |
import datetime |
0 | 16 |
from md5 import md5 |
4466
8b0ca7904820
moved generic datetime manipulation function to lgc
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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diff
changeset
|
17 |
from time import time |
0 | 18 |
from random import randint, seed |
3231
3ee43e2f8560
[utils] provide a class to extend the default simplejson encoder to be able to dump standard yams attribute types
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
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diff
changeset
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19 |
import decimal |
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some basic calendar manipulation functions, delete-trailing-whitespace
sylvain.thenault@logilab.fr
parents:
1397
diff
changeset
|
20 |
|
4466
8b0ca7904820
moved generic datetime manipulation function to lgc
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
4335
diff
changeset
|
21 |
from logilab.common.date import strptime, todate, next_month |
8b0ca7904820
moved generic datetime manipulation function to lgc
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parents:
4335
diff
changeset
|
22 |
|
1024
bb96289257bf
remove unused working_hours function, new todate function since we can't compare date and datetime objects
sylvain.thenault@logilab.fr
parents:
1016
diff
changeset
|
23 |
# initialize random seed from current time |
bb96289257bf
remove unused working_hours function, new todate function since we can't compare date and datetime objects
sylvain.thenault@logilab.fr
parents:
1016
diff
changeset
|
24 |
seed() |
0 | 25 |
|
4466
8b0ca7904820
moved generic datetime manipulation function to lgc
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
4335
diff
changeset
|
26 |
# XXX should replace lgc.date.date_range implementation |
1705
d5e02874ae77
Fix date_range increments argument.
Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents:
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diff
changeset
|
27 |
def date_range(begin, end, incday=None, incmonth=None): |
0 | 28 |
"""yields each date between begin and end |
29 |
:param begin: the start date |
|
30 |
:param end: the end date |
|
31 |
:param incr: the step to use to iterate over dates. Default is |
|
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some basic calendar manipulation functions, delete-trailing-whitespace
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parents:
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|
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one day. |
0 | 33 |
:param include: None (means no exclusion) or a function taking a |
34 |
date as parameter, and returning True if the date |
|
35 |
should be included. |
|
36 |
""" |
|
1705
d5e02874ae77
Fix date_range increments argument.
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parents:
1697
diff
changeset
|
37 |
assert not (incday and incmonth) |
d5e02874ae77
Fix date_range increments argument.
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parents:
1697
diff
changeset
|
38 |
begin = todate(begin) |
1711
182536159750
Make sure end is datetime.date.
Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents:
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diff
changeset
|
39 |
end = todate(end) |
1705
d5e02874ae77
Fix date_range increments argument.
Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents:
1697
diff
changeset
|
40 |
if incmonth: |
d5e02874ae77
Fix date_range increments argument.
Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents:
1697
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changeset
|
41 |
while begin < end: |
d5e02874ae77
Fix date_range increments argument.
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parents:
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|
42 |
begin = next_month(begin, incmonth) |
1132 | 43 |
yield begin |
1705
d5e02874ae77
Fix date_range increments argument.
Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents:
1697
diff
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|
44 |
else: |
d5e02874ae77
Fix date_range increments argument.
Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents:
1697
diff
changeset
|
45 |
if not incday: |
d5e02874ae77
Fix date_range increments argument.
Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents:
1697
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|
46 |
incr = ONEDAY |
d5e02874ae77
Fix date_range increments argument.
Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents:
1697
diff
changeset
|
47 |
else: |
4466
8b0ca7904820
moved generic datetime manipulation function to lgc
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
4335
diff
changeset
|
48 |
incr = datetime.timedelta(incday) |
1705
d5e02874ae77
Fix date_range increments argument.
Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents:
1697
diff
changeset
|
49 |
while begin <= end: |
d5e02874ae77
Fix date_range increments argument.
Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents:
1697
diff
changeset
|
50 |
yield begin |
d5e02874ae77
Fix date_range increments argument.
Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents:
1697
diff
changeset
|
51 |
begin += incr |
0 | 52 |
|
1024
bb96289257bf
remove unused working_hours function, new todate function since we can't compare date and datetime objects
sylvain.thenault@logilab.fr
parents:
1016
diff
changeset
|
53 |
|
3146
cfc4344023f2
have a better make_uid function, esp. useful for win32 as collisions are frequents with the old one
Aurelien Campeas
parents:
3101
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changeset
|
54 |
if sys.version_info[:2] < (2, 5): |
cfc4344023f2
have a better make_uid function, esp. useful for win32 as collisions are frequents with the old one
Aurelien Campeas
parents:
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diff
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55 |
def make_uid(key): |
cfc4344023f2
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Aurelien Campeas
parents:
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56 |
"""forge a unique identifier |
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Aurelien Campeas
parents:
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57 |
not that unique on win32""" |
cfc4344023f2
have a better make_uid function, esp. useful for win32 as collisions are frequents with the old one
Aurelien Campeas
parents:
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|
58 |
msg = str(key) + "%.10f" % time() + str(randint(0, 1000000)) |
cfc4344023f2
have a better make_uid function, esp. useful for win32 as collisions are frequents with the old one
Aurelien Campeas
parents:
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|
59 |
return md5(msg).hexdigest() |
cfc4344023f2
have a better make_uid function, esp. useful for win32 as collisions are frequents with the old one
Aurelien Campeas
parents:
3101
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changeset
|
60 |
else: |
cfc4344023f2
have a better make_uid function, esp. useful for win32 as collisions are frequents with the old one
Aurelien Campeas
parents:
3101
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changeset
|
61 |
from uuid import uuid4 |
cfc4344023f2
have a better make_uid function, esp. useful for win32 as collisions are frequents with the old one
Aurelien Campeas
parents:
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changeset
|
62 |
def make_uid(key): |
3364
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fix uid generation for py >= 2.5
Sylvain Thénault <sylvain.thenault@logilab.fr>
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63 |
# remove dash, generated uid are used as identifier sometimes (sql table |
039d1694f36d
fix uid generation for py >= 2.5
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parents:
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|
64 |
# names at least) |
039d1694f36d
fix uid generation for py >= 2.5
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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|
65 |
return str(key) + str(uuid4()).replace('-', '') |
039d1694f36d
fix uid generation for py >= 2.5
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parents:
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|
0 | 67 |
|
68 |
def dump_class(cls, clsname): |
|
69 |
"""create copy of a class by creating an empty class inheriting |
|
70 |
from the given cls. |
|
71 |
||
72 |
Those class will be used as place holder for attribute and relation |
|
73 |
description |
|
74 |
""" |
|
75 |
# type doesn't accept unicode name |
|
76 |
# return type.__new__(type, str(clsname), (cls,), {}) |
|
77 |
# __autogenerated__ attribute is just a marker |
|
78 |
return type(str(clsname), (cls,), {'__autogenerated__': True}) |
|
79 |
||
80 |
||
81 |
def merge_dicts(dict1, dict2): |
|
82 |
"""update a copy of `dict1` with `dict2`""" |
|
83 |
dict1 = dict(dict1) |
|
84 |
dict1.update(dict2) |
|
85 |
return dict1 |
|
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0 | 87 |
|
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88 |
# use networkX instead ? |
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|
89 |
# http://networkx.lanl.gov/reference/algorithms.traversal.html#module-networkx.algorithms.traversal.astar |
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90 |
def transitive_closure_of(entity, relname, _seen=None): |
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some docstring
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parents:
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"""return transitive closure *for the subgraph starting from the given |
b2093f8f0493
some docstring
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92 |
entity* (eg 'parent' entities are not included in the results) |
b2093f8f0493
some docstring
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93 |
""" |
3882
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|
94 |
if _seen is None: |
addc715f4fcd
backported from confman
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parents:
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|
95 |
_seen = set() |
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backported from confman
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parents:
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|
96 |
_seen.add(entity.eid) |
addc715f4fcd
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parents:
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|
97 |
yield entity |
addc715f4fcd
backported from confman
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parents:
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changeset
|
98 |
for child in getattr(entity, relname): |
addc715f4fcd
backported from confman
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parents:
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|
99 |
if child.eid in _seen: |
addc715f4fcd
backported from confman
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parents:
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|
100 |
continue |
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backported from confman
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parents:
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changeset
|
101 |
for subchild in transitive_closure_of(child, relname, _seen): |
addc715f4fcd
backported from confman
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parents:
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|
102 |
yield subchild |
addc715f4fcd
backported from confman
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
3851
diff
changeset
|
103 |
|
addc715f4fcd
backported from confman
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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changeset
|
104 |
|
0 | 105 |
class SizeConstrainedList(list): |
106 |
"""simple list that makes sure the list does not get bigger |
|
107 |
than a given size. |
|
108 |
||
109 |
when the list is full and a new element is added, the first |
|
110 |
element of the list is removed before appending the new one |
|
111 |
||
112 |
>>> l = SizeConstrainedList(2) |
|
113 |
>>> l.append(1) |
|
114 |
>>> l.append(2) |
|
115 |
>>> l |
|
116 |
[1, 2] |
|
117 |
>>> l.append(3) |
|
118 |
[2, 3] |
|
119 |
""" |
|
120 |
def __init__(self, maxsize): |
|
121 |
self.maxsize = maxsize |
|
122 |
||
123 |
def append(self, element): |
|
124 |
if len(self) == self.maxsize: |
|
125 |
del self[0] |
|
126 |
super(SizeConstrainedList, self).append(element) |
|
127 |
||
128 |
def extend(self, sequence): |
|
129 |
super(SizeConstrainedList, self).extend(sequence) |
|
130 |
keepafter = len(self) - self.maxsize |
|
131 |
if keepafter > 0: |
|
132 |
del self[:keepafter] |
|
133 |
||
134 |
__iadd__ = extend |
|
135 |
||
136 |
||
137 |
class UStringIO(list): |
|
138 |
"""a file wrapper which automatically encode unicode string to an encoding |
|
139 |
specifed in the constructor |
|
140 |
""" |
|
141 |
||
142 |
def __nonzero__(self): |
|
143 |
return True |
|
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parents:
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changeset
|
144 |
|
0 | 145 |
def write(self, value): |
146 |
assert isinstance(value, unicode), u"unicode required not %s : %s"\ |
|
147 |
% (type(value).__name__, repr(value)) |
|
148 |
self.append(value) |
|
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parents:
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|
149 |
|
0 | 150 |
def getvalue(self): |
151 |
return u''.join(self) |
|
152 |
||
153 |
def __repr__(self): |
|
154 |
return '<%s at %#x>' % (self.__class__.__name__, id(self)) |
|
155 |
||
156 |
||
157 |
class HTMLHead(UStringIO): |
|
158 |
"""wraps HTML header's stream |
|
159 |
||
160 |
Request objects use a HTMLHead instance to ease adding of |
|
161 |
javascripts and stylesheets |
|
162 |
""" |
|
163 |
js_unload_code = u'jQuery(window).unload(unloadPageData);' |
|
164 |
||
165 |
def __init__(self): |
|
166 |
super(HTMLHead, self).__init__() |
|
167 |
self.jsvars = [] |
|
168 |
self.jsfiles = [] |
|
169 |
self.cssfiles = [] |
|
170 |
self.ie_cssfiles = [] |
|
171 |
self.post_inlined_scripts = [] |
|
172 |
self.pagedata_unload = False |
|
173 |
||
174 |
||
175 |
def add_raw(self, rawheader): |
|
176 |
self.write(rawheader) |
|
177 |
||
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diff
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|
178 |
def define_var(self, var, value, override=True): |
9cc134372bf8
[web] safety belt to avoid overriding pageid with loadxhtml()
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parents:
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|
179 |
"""adds a javascript var declaration / assginment in the header |
9cc134372bf8
[web] safety belt to avoid overriding pageid with loadxhtml()
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parents:
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|
180 |
|
9cc134372bf8
[web] safety belt to avoid overriding pageid with loadxhtml()
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parents:
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|
181 |
:param var: the variable name |
9cc134372bf8
[web] safety belt to avoid overriding pageid with loadxhtml()
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parents:
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diff
changeset
|
182 |
:param value: the variable value (as a raw python value, |
9cc134372bf8
[web] safety belt to avoid overriding pageid with loadxhtml()
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
3789
diff
changeset
|
183 |
it will be jsonized later) |
9cc134372bf8
[web] safety belt to avoid overriding pageid with loadxhtml()
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
3789
diff
changeset
|
184 |
:param override: if False, don't set the variable value if the variable |
9cc134372bf8
[web] safety belt to avoid overriding pageid with loadxhtml()
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parents:
3789
diff
changeset
|
185 |
is already defined. Default is True. |
9cc134372bf8
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parents:
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diff
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|
186 |
""" |
9cc134372bf8
[web] safety belt to avoid overriding pageid with loadxhtml()
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parents:
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diff
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|
187 |
self.jsvars.append( (var, value, override) ) |
0 | 188 |
|
189 |
def add_post_inline_script(self, content): |
|
190 |
self.post_inlined_scripts.append(content) |
|
28
9b7067bfaa15
introduce html_headers.on_load() method as a shortcut for add_post_inline_script('''jQuery(document).ready(...''')
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parents:
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diff
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|
191 |
|
2258
79bc598c6411
when request is a json request, bind on 'ajax-loaded' instead of document.ready()
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2009
diff
changeset
|
192 |
def add_onload(self, jscode, jsoncall=False): |
79bc598c6411
when request is a json request, bind on 'ajax-loaded' instead of document.ready()
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parents:
2009
diff
changeset
|
193 |
if jsoncall: |
79bc598c6411
when request is a json request, bind on 'ajax-loaded' instead of document.ready()
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2009
diff
changeset
|
194 |
self.add_post_inline_script(u"""jQuery(CubicWeb).bind('ajax-loaded', function(event) { |
79bc598c6411
when request is a json request, bind on 'ajax-loaded' instead of document.ready()
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parents:
2009
diff
changeset
|
195 |
%s |
79bc598c6411
when request is a json request, bind on 'ajax-loaded' instead of document.ready()
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parents:
2009
diff
changeset
|
196 |
});""" % jscode) |
79bc598c6411
when request is a json request, bind on 'ajax-loaded' instead of document.ready()
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parents:
2009
diff
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|
197 |
else: |
79bc598c6411
when request is a json request, bind on 'ajax-loaded' instead of document.ready()
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2009
diff
changeset
|
198 |
self.add_post_inline_script(u"""jQuery(document).ready(function () { |
28
9b7067bfaa15
introduce html_headers.on_load() method as a shortcut for add_post_inline_script('''jQuery(document).ready(...''')
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
0
diff
changeset
|
199 |
%s |
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introduce html_headers.on_load() method as a shortcut for add_post_inline_script('''jQuery(document).ready(...''')
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parents:
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diff
changeset
|
200 |
});""" % jscode) |
1549
f87561822e27
some basic calendar manipulation functions, delete-trailing-whitespace
sylvain.thenault@logilab.fr
parents:
1397
diff
changeset
|
201 |
|
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parents:
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diff
changeset
|
202 |
|
0 | 203 |
def add_js(self, jsfile): |
204 |
"""adds `jsfile` to the list of javascripts used in the webpage |
|
205 |
||
206 |
This function checks if the file has already been added |
|
207 |
:param jsfile: the script's URL |
|
208 |
""" |
|
209 |
if jsfile not in self.jsfiles: |
|
210 |
self.jsfiles.append(jsfile) |
|
211 |
||
212 |
def add_css(self, cssfile, media): |
|
213 |
"""adds `cssfile` to the list of javascripts used in the webpage |
|
214 |
||
215 |
This function checks if the file has already been added |
|
216 |
:param cssfile: the stylesheet's URL |
|
217 |
""" |
|
218 |
if (cssfile, media) not in self.cssfiles: |
|
219 |
self.cssfiles.append( (cssfile, media) ) |
|
220 |
||
221 |
def add_ie_css(self, cssfile, media='all'): |
|
222 |
"""registers some IE specific CSS""" |
|
223 |
if (cssfile, media) not in self.ie_cssfiles: |
|
224 |
self.ie_cssfiles.append( (cssfile, media) ) |
|
225 |
||
226 |
def add_unload_pagedata(self): |
|
227 |
"""registers onunload callback to clean page data on server""" |
|
228 |
if not self.pagedata_unload: |
|
229 |
self.post_inlined_scripts.append(self.js_unload_code) |
|
230 |
self.pagedata_unload = True |
|
231 |
||
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
|
232 |
def getvalue(self, skiphead=False): |
0 | 233 |
"""reimplement getvalue to provide a consistent (and somewhat browser |
234 |
optimzed cf. http://stevesouders.com/cuzillion) order in external |
|
235 |
resources declaration |
|
236 |
""" |
|
237 |
w = self.write |
|
238 |
# 1/ variable declaration if any |
|
239 |
if self.jsvars: |
|
2554
3b6a6d2f9d7e
make jsvars declaration xhtml and html compatible
Fabrice <fabrice@secondweb.fr>
parents:
2361
diff
changeset
|
240 |
w(u'<script type="text/javascript"><!--//--><![CDATA[//><!--\n') |
3838
9cc134372bf8
[web] safety belt to avoid overriding pageid with loadxhtml()
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
3789
diff
changeset
|
241 |
for var, value, override in self.jsvars: |
9cc134372bf8
[web] safety belt to avoid overriding pageid with loadxhtml()
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
3789
diff
changeset
|
242 |
vardecl = u'%s = %s;' % (var, dumps(value)) |
9cc134372bf8
[web] safety belt to avoid overriding pageid with loadxhtml()
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
3789
diff
changeset
|
243 |
if not override: |
9cc134372bf8
[web] safety belt to avoid overriding pageid with loadxhtml()
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
3789
diff
changeset
|
244 |
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
|
245 |
(var, vardecl)) |
9cc134372bf8
[web] safety belt to avoid overriding pageid with loadxhtml()
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
3789
diff
changeset
|
246 |
w(vardecl + u'\n') |
2554
3b6a6d2f9d7e
make jsvars declaration xhtml and html compatible
Fabrice <fabrice@secondweb.fr>
parents:
2361
diff
changeset
|
247 |
w(u'//--><!]]></script>\n') |
0 | 248 |
# 2/ css files |
249 |
for cssfile, media in self.cssfiles: |
|
250 |
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
|
251 |
(media, xml_escape(cssfile))) |
0 | 252 |
# 3/ ie css if necessary |
253 |
if self.ie_cssfiles: |
|
254 |
w(u'<!--[if lt IE 8]>\n') |
|
255 |
for cssfile, media in self.ie_cssfiles: |
|
256 |
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
|
257 |
(media, xml_escape(cssfile))) |
0 | 258 |
w(u'<![endif]--> \n') |
259 |
# 4/ js files |
|
260 |
for jsfile in self.jsfiles: |
|
3091
c3d73cecb29e
[html-head] escape js and css urls
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
2678
diff
changeset
|
261 |
w(u'<script type="text/javascript" src="%s"></script>\n' % |
c3d73cecb29e
[html-head] escape js and css urls
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
2678
diff
changeset
|
262 |
xml_escape(jsfile)) |
0 | 263 |
# 5/ post inlined scripts (i.e. scripts depending on other JS files) |
264 |
if self.post_inlined_scripts: |
|
265 |
w(u'<script type="text/javascript">\n') |
|
266 |
w(u'\n\n'.join(self.post_inlined_scripts)) |
|
267 |
w(u'\n</script>\n') |
|
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
|
268 |
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
|
269 |
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
|
270 |
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
|
271 |
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
|
272 |
|
0 | 273 |
|
274 |
class HTMLStream(object): |
|
275 |
"""represents a HTML page. |
|
276 |
||
277 |
This is used my main templates so that HTML headers can be added |
|
278 |
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
|
279 |
|
0 | 280 |
HTMLStream uses the (U)StringIO interface to be compliant with |
281 |
existing code. |
|
282 |
""" |
|
1549
f87561822e27
some basic calendar manipulation functions, delete-trailing-whitespace
sylvain.thenault@logilab.fr
parents:
1397
diff
changeset
|
283 |
|
0 | 284 |
def __init__(self, req): |
285 |
# stream for <head> |
|
286 |
self.head = req.html_headers |
|
287 |
# main stream |
|
288 |
self.body = UStringIO() |
|
289 |
self.doctype = u'' |
|
290 |
# xmldecl and html opening tag |
|
291 |
self.xmldecl = u'<?xml version="1.0" encoding="%s"?>\n' % req.encoding |
|
292 |
self.htmltag = u'<html xmlns="http://www.w3.org/1999/xhtml" ' \ |
|
293 |
'xmlns:cubicweb="http://www.logilab.org/2008/cubicweb" ' \ |
|
294 |
'xml:lang="%s" lang="%s">' % (req.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
|
295 |
# 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
|
296 |
req.main_stream = self |
0 | 297 |
|
298 |
def write(self, data): |
|
299 |
"""StringIO interface: this method will be assigned to self.w |
|
300 |
""" |
|
301 |
self.body.write(data) |
|
302 |
||
303 |
def getvalue(self): |
|
304 |
"""writes HTML headers, closes </head> tag and writes HTML body""" |
|
305 |
return u'%s\n%s\n%s\n%s\n%s\n</html>' % (self.xmldecl, self.doctype, |
|
306 |
self.htmltag, |
|
307 |
self.head.getvalue(), |
|
308 |
self.body.getvalue()) |
|
309 |
||
310 |
||
2935
e06b3eadef31
[views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
2932
diff
changeset
|
311 |
def can_do_pdf_conversion(__answer=[None]): |
e06b3eadef31
[views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
2932
diff
changeset
|
312 |
"""pdf conversion depends on |
3789
fb22b55f80f8
update docstring, xml escape exception description
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
3372
diff
changeset
|
313 |
* pysixt (python package) |
2935
e06b3eadef31
[views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
2932
diff
changeset
|
314 |
* fop 0.9x |
0 | 315 |
""" |
2935
e06b3eadef31
[views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
2932
diff
changeset
|
316 |
if __answer[0] is not None: |
e06b3eadef31
[views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
2932
diff
changeset
|
317 |
return __answer[0] |
e06b3eadef31
[views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
2932
diff
changeset
|
318 |
try: |
2936
f35b64718d02
follow name change, fix pdf template registration, add debian package tracking
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
2935
diff
changeset
|
319 |
import pysixt |
2935
e06b3eadef31
[views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
2932
diff
changeset
|
320 |
except ImportError: |
e06b3eadef31
[views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
2932
diff
changeset
|
321 |
__answer[0] = False |
e06b3eadef31
[views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
2932
diff
changeset
|
322 |
return False |
e06b3eadef31
[views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
2932
diff
changeset
|
323 |
from subprocess import Popen, STDOUT |
e06b3eadef31
[views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
2932
diff
changeset
|
324 |
import os |
e06b3eadef31
[views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
2932
diff
changeset
|
325 |
try: |
e06b3eadef31
[views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
2932
diff
changeset
|
326 |
Popen(['/usr/bin/fop', '-q'], |
e06b3eadef31
[views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
2932
diff
changeset
|
327 |
stdout=open(os.devnull, 'w'), |
e06b3eadef31
[views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
2932
diff
changeset
|
328 |
stderr=STDOUT) |
e06b3eadef31
[views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
2932
diff
changeset
|
329 |
except OSError, e: |
e06b3eadef31
[views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
2932
diff
changeset
|
330 |
print e |
e06b3eadef31
[views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
2932
diff
changeset
|
331 |
__answer[0] = False |
e06b3eadef31
[views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
2932
diff
changeset
|
332 |
return False |
e06b3eadef31
[views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
2932
diff
changeset
|
333 |
__answer[0] = True |
e06b3eadef31
[views,pdf] minimal support for xhtml->pdf conversion
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
2932
diff
changeset
|
334 |
return True |
3231
3ee43e2f8560
[utils] provide a class to extend the default simplejson encoder to be able to dump standard yams attribute types
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
3101
diff
changeset
|
335 |
|
3371
762a7bc3b73d
this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
3364
diff
changeset
|
336 |
try: |
3372 | 337 |
# may not be there if cubicweb-web not installed |
3371
762a7bc3b73d
this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
3364
diff
changeset
|
338 |
from simplejson import dumps, JSONEncoder |
762a7bc3b73d
this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
3364
diff
changeset
|
339 |
except ImportError: |
762a7bc3b73d
this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
3364
diff
changeset
|
340 |
pass |
762a7bc3b73d
this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
3364
diff
changeset
|
341 |
else: |
3231
3ee43e2f8560
[utils] provide a class to extend the default simplejson encoder to be able to dump standard yams attribute types
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
3101
diff
changeset
|
342 |
|
3371
762a7bc3b73d
this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
3364
diff
changeset
|
343 |
class CubicWebJsonEncoder(JSONEncoder): |
762a7bc3b73d
this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
3364
diff
changeset
|
344 |
"""define a simplejson encoder to be able to encode yams std types""" |
762a7bc3b73d
this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
3364
diff
changeset
|
345 |
def default(self, obj): |
4466
8b0ca7904820
moved generic datetime manipulation function to lgc
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
4335
diff
changeset
|
346 |
if isinstance(obj, datetime.datetime): |
3371
762a7bc3b73d
this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
3364
diff
changeset
|
347 |
return obj.strftime('%Y/%m/%d %H:%M:%S') |
4466
8b0ca7904820
moved generic datetime manipulation function to lgc
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
4335
diff
changeset
|
348 |
elif isinstance(obj, datetime.date): |
3371
762a7bc3b73d
this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
3364
diff
changeset
|
349 |
return obj.strftime('%Y/%m/%d') |
4466
8b0ca7904820
moved generic datetime manipulation function to lgc
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
4335
diff
changeset
|
350 |
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
|
351 |
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
|
352 |
elif isinstance(obj, datetime.timedelta): |
4000
4b16a7c01a25
fix jsonization of interval
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
3902
diff
changeset
|
353 |
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
|
354 |
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
|
355 |
return float(obj) |
762a7bc3b73d
this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
3364
diff
changeset
|
356 |
try: |
762a7bc3b73d
this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
3364
diff
changeset
|
357 |
return JSONEncoder.default(self, obj) |
762a7bc3b73d
this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
3364
diff
changeset
|
358 |
except TypeError: |
762a7bc3b73d
this has probably be killed by a bad merge...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
3364
diff
changeset
|
359 |
# 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
|
360 |
# 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
|
361 |
return None |