author | Sylvain Thénault <sylvain.thenault@logilab.fr> |
Tue, 27 Jul 2010 12:37:27 +0200 | |
changeset 6020 | 6f3b4f20ee9f |
parent 5951 | 6026582ae4f1 |
child 6106 | 1e6d93f70d14 |
permissions | -rw-r--r-- |
0 | 1 |
# -*- coding: utf-8 -*- |
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# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved. |
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proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
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# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr |
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proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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4 |
# |
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proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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# This file is part of CubicWeb. |
8167de96c523
proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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# |
8167de96c523
proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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# CubicWeb is free software: you can redistribute it and/or modify it under the |
8167de96c523
proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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# terms of the GNU Lesser General Public License as published by the Free |
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proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
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# Software Foundation, either version 2.1 of the License, or (at your option) |
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proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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# any later version. |
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Sylvain Thénault <sylvain.thenault@logilab.fr>
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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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Sylvain Thénault <sylvain.thenault@logilab.fr>
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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Sylvain Thénault <sylvain.thenault@logilab.fr>
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# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more |
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proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
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# details. |
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Sylvain Thénault <sylvain.thenault@logilab.fr>
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# |
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proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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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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"""user interface libraries |
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contains some functions designed to help implementation of cubicweb user |
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interface. |
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""" |
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__docformat__ = "restructuredtext en" |
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import csv |
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import re |
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from StringIO import StringIO |
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from logilab.mtconverter import xml_escape, html_unescape |
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from logilab.common.date import ustrftime |
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from cubicweb.utils import json_dumps |
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def rql_for_eid(eid): |
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"""return the rql query necessary to fetch entity with the given eid. This |
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function should only be used to generate link with rql inside, not to give |
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to cursor.execute (in which case you won't benefit from rql cache). |
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:Parameters: |
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- `eid`: the eid of the entity we should search |
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:rtype: str |
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:return: the rql query |
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""" |
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return 'Any X WHERE X eid %s' % eid |
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def printable_value(req, attrtype, value, props=None, displaytime=True): |
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"""return a displayable value (i.e. unicode string)""" |
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if value is None or attrtype == 'Bytes': |
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return u'' |
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if attrtype == 'String': |
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# don't translate empty value if you don't want strange results |
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if props is not None and value and props.get('internationalizable'): |
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return req._(value) |
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return value |
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if attrtype == 'Date': |
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return ustrftime(value, req.property_value('ui.date-format')) |
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if attrtype == 'Time': |
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return ustrftime(value, req.property_value('ui.time-format')) |
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if attrtype == 'Datetime': |
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if displaytime: |
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return ustrftime(value, req.property_value('ui.datetime-format')) |
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return ustrftime(value, req.property_value('ui.date-format')) |
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if attrtype == 'Boolean': |
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if value: |
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return req._('yes') |
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return req._('no') |
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if attrtype == 'Float': |
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value = req.property_value('ui.float-format') % value |
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return unicode(value) |
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# text publishing ############################################################# |
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try: |
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from cubicweb.ext.rest import rest_publish # pylint: disable-msg=W0611 |
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except ImportError: |
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def rest_publish(entity, data): |
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"""default behaviour if docutils was not found""" |
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return xml_escape(data) |
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TAG_PROG = re.compile(r'</?.*?>', re.U) |
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def remove_html_tags(text): |
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"""Removes HTML tags from text |
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>>> remove_html_tags('<td>hi <a href="http://www.google.fr">world</a></td>') |
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'hi world' |
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>>> |
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""" |
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return TAG_PROG.sub('', text) |
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REF_PROG = re.compile(r"<ref\s+rql=([\'\"])([^\1]*?)\1\s*>([^<]*)</ref>", re.U) |
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def _subst_rql(view, obj): |
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delim, rql, descr = obj.groups() |
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return u'<a href="%s">%s</a>' % (view._cw.build_url(rql=rql), descr) |
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def html_publish(view, text): |
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"""replace <ref rql=''> links by <a href="...">""" |
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if not text: |
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return u'' |
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return REF_PROG.sub(lambda obj, view=view:_subst_rql(view, obj), text) |
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# fallback implementation, nicer one defined below if lxml is available |
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def soup2xhtml(data, encoding): |
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# normalize line break |
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# see http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.7.1 |
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return u'\n'.join(data.splitlines()) |
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# fallback implementation, nicer one defined below if lxml> 2.0 is available |
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def safe_cut(text, length): |
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"""returns a string of length <length> based on <text>, removing any html |
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tags from given text if cut is necessary.""" |
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if text is None: |
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return u'' |
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use mtconverter's html_unescape rather than saxutils' escape to deal with any html entity
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noenttext = html_unescape(text) |
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text_nohtml = remove_html_tags(noenttext) |
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# try to keep html tags if text is short enough |
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if len(text_nohtml) <= length: |
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return text |
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# else if un-tagged text is too long, cut it |
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return xml_escape(text_nohtml[:length] + u'...') |
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|
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fallback_safe_cut = safe_cut |
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|
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REM_ROOT_HTML_TAGS = re.compile('</(body|html)>', re.U) |
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try: |
131 |
from lxml import etree |
|
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[lxml] lxml version < 2 does not provide an iter method on some elements
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132 |
except (ImportError, AttributeError): |
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a case for tidy : for your consideration
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133 |
# gae environment: lxml not available |
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134 |
pass |
0 | 135 |
else: |
136 |
||
137 |
def soup2xhtml(data, encoding): |
|
138 |
"""tidy (at least try) html soup and return the result |
|
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[xhtml] fix soup2xhtml to deal with malformed div,body and html tags which may leads to malformed return value
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parents:
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139 |
|
0 | 140 |
Note: the function considers a string with no surrounding tag as valid |
141 |
if <div>`data`</div> can be parsed by an XML parser |
|
142 |
""" |
|
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784025c15a3c
[xhtml] fix soup2xhtml to deal with malformed div,body and html tags which may leads to malformed return value
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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|
143 |
# remove spurious </body> and </html> tags, then normalize line break |
784025c15a3c
[xhtml] fix soup2xhtml to deal with malformed div,body and html tags which may leads to malformed return value
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parents:
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144 |
# (see http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.7.1) |
784025c15a3c
[xhtml] fix soup2xhtml to deal with malformed div,body and html tags which may leads to malformed return value
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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diff
changeset
|
145 |
data = REM_ROOT_HTML_TAGS.sub('', u'\n'.join(data.splitlines())) |
2208
1c73148ed912
normalize line breaks (actually fix https://www.logilab.net/cwo/ticket/343754)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
1977
diff
changeset
|
146 |
# XXX lxml 1.1 support still needed ? |
0 | 147 |
xmltree = etree.HTML('<div>%s</div>' % data) |
148 |
# NOTE: lxml 1.1 (etch platforms) doesn't recognize |
|
149 |
# the encoding=unicode parameter (lxml 2.0 does), this is |
|
150 |
# why we specify an encoding and re-decode to unicode later |
|
151 |
body = etree.tostring(xmltree[0], encoding=encoding) |
|
152 |
# remove <body> and </body> and decode to unicode |
|
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784025c15a3c
[xhtml] fix soup2xhtml to deal with malformed div,body and html tags which may leads to malformed return value
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parents:
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|
153 |
snippet = body[6:-7].decode(encoding) |
784025c15a3c
[xhtml] fix soup2xhtml to deal with malformed div,body and html tags which may leads to malformed return value
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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diff
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|
154 |
# take care to bad xhtml (for instance starting with </div>) which |
784025c15a3c
[xhtml] fix soup2xhtml to deal with malformed div,body and html tags which may leads to malformed return value
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
5424
diff
changeset
|
155 |
# may mess with the <div> we added below. Only remove it if it's |
784025c15a3c
[xhtml] fix soup2xhtml to deal with malformed div,body and html tags which may leads to malformed return value
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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diff
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|
156 |
# still there... |
784025c15a3c
[xhtml] fix soup2xhtml to deal with malformed div,body and html tags which may leads to malformed return value
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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diff
changeset
|
157 |
if snippet.startswith('<div>') and snippet.endswith('</div>'): |
784025c15a3c
[xhtml] fix soup2xhtml to deal with malformed div,body and html tags which may leads to malformed return value
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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diff
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|
158 |
snippet = snippet[5:-6] |
784025c15a3c
[xhtml] fix soup2xhtml to deal with malformed div,body and html tags which may leads to malformed return value
Sylvain Thénault <sylvain.thenault@logilab.fr>
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return snippet |
0 | 160 |
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if hasattr(etree.HTML('<div>test</div>'), 'iter'): |
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def safe_cut(text, length): |
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"""returns an html document of length <length> based on <text>, |
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and cut is necessary. |
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""" |
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if text is None: |
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return u'' |
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dom = etree.HTML(text) |
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curlength = 0 |
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add_ellipsis = False |
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for element in dom.iter(): |
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if curlength >= length: |
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parent = element.getparent() |
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parent.remove(element) |
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if curlength == length and (element.text or element.tail): |
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add_ellipsis = True |
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else: |
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if element.text is not None: |
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element.text = cut(element.text, length - curlength) |
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curlength += len(element.text) |
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if element.tail is not None: |
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if curlength < length: |
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element.tail = cut(element.tail, length - curlength) |
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curlength += len(element.tail) |
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elif curlength == length: |
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element.tail = '...' |
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else: |
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element.tail = '' |
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text = etree.tounicode(dom[0])[6:-7] # remove wrapping <body></body> |
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if add_ellipsis: |
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return text + u'...' |
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return text |
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def text_cut(text, nbwords=30, gotoperiod=True): |
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"""from the given plain text, return a text with at least <nbwords> words, |
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trying to go to the end of the current sentence. |
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:param nbwords: the minimum number of words required |
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:param gotoperiod: specifies if the function should try to go to |
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the first period after the cut (i.e. finish |
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the sentence if possible) |
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203 |
|
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Note that spaces are normalized. |
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""" |
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if text is None: |
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return u'' |
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words = text.split() |
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text = u' '.join(words) # normalize spaces |
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textlength = minlength = len(' '.join(words[:nbwords])) |
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if gotoperiod: |
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textlength = text.find('.', minlength) + 1 |
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if textlength == 0: # no period found |
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textlength = minlength |
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return text[:textlength] |
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216 |
|
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def cut(text, length): |
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"""returns a string of a maximum length <length> based on <text> |
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(approximatively, since if text has been cut, '...' is added to the end of the string, |
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resulting in a string of len <length> + 3) |
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""" |
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if text is None: |
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return u'' |
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if len(text) <= length: |
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return text |
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# else if un-tagged text is too long, cut it |
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return text[:length] + u'...' |
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228 |
|
165 | 229 |
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230 |
|
0 | 231 |
# HTML generation helper functions ############################################ |
232 |
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class _JSId(object): |
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def __init__(self, id, parent=None): |
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self.id = id |
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self.parent = parent |
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def __unicode__(self): |
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if self.parent: |
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return u'%s.%s' % (self.parent, self.id) |
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return unicode(self.id) |
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def __str__(self): |
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return unicode(self).encode('utf8') |
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def __getattr__(self, attr): |
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return _JSId(attr, self) |
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def __call__(self, *args): |
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return _JSCallArgs(args, self) |
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247 |
|
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class _JSCallArgs(_JSId): |
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def __init__(self, args, parent=None): |
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assert isinstance(args, tuple) |
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self.args = args |
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self.parent = parent |
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def __unicode__(self): |
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args = u','.join(json_dumps(arg) for arg in self.args) |
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if self.parent: |
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return u'%s(%s)' % (self.parent, args) |
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return args |
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|
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class _JS(object): |
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def __getattr__(self, attr): |
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return _JSId(attr) |
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262 |
|
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"""magic object to return strings suitable to call some javascript function with |
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|
264 |
the given arguments (which should be correctly typed). |
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|
265 |
|
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|
266 |
>>> str(js.pouet(1, "2")) |
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267 |
'pouet(1,"2")' |
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268 |
>>> str(js.cw.pouet(1, "2")) |
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269 |
'cw.pouet(1,"2")' |
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270 |
>>> str(js.cw.pouet(1, "2").pouet(None)) |
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271 |
'cw.pouet(1,"2").pouet(null)') |
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272 |
""" |
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|
273 |
js = _JS() |
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274 |
|
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275 |
def domid(string): |
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276 |
"""return a valid DOM id from a string (should also be usable in jQuery |
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277 |
search expression...) |
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|
278 |
""" |
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279 |
return string.replace('.', '_').replace('-', '_') |
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280 |
|
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a standard-conformant fix for sgml_tags
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281 |
HTML4_EMPTY_TAGS = frozenset(('base', 'meta', 'link', 'hr', 'br', 'param', |
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282 |
'img', 'area', 'input', 'col')) |
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283 |
|
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|
284 |
def sgml_attributes(attrs): |
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285 |
return u' '.join(u'%s="%s"' % (attr, xml_escape(unicode(value))) |
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extract function: sgml_attributes
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|
286 |
for attr, value in sorted(attrs.items()) |
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extract function: sgml_attributes
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|
287 |
if value is not None) |
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|
288 |
|
1623 | 289 |
def simple_sgml_tag(tag, content=None, escapecontent=True, **attrs): |
525
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function to make generation of a simple sgml tag
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|
290 |
"""generation of a simple sgml tag (eg without children tags) easier |
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|
291 |
|
2399
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a standard-conformant fix for sgml_tags
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292 |
content and attri butes will be escaped |
525
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|
293 |
""" |
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|
294 |
value = u'<%s' % tag |
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|
295 |
if attrs: |
980
59552ba2015f
more tags, map klass -> class avoiding needs to use **dict
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|
296 |
try: |
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|
297 |
attrs['class'] = attrs.pop('klass') |
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|
298 |
except KeyError: |
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299 |
pass |
2516
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300 |
value += u' ' + sgml_attributes(attrs) |
525
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changeset
|
301 |
if content: |
1623 | 302 |
if escapecontent: |
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use xml_escape
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parents:
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|
303 |
content = xml_escape(unicode(content)) |
1623 | 304 |
value += u'>%s</%s>' % (content, tag) |
525
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|
305 |
else: |
2398
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306 |
if tag in HTML4_EMPTY_TAGS: |
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|
307 |
value += u' />' |
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|
308 |
else: |
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a standard-conformant fix for sgml_tags
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parents:
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|
309 |
value += u'></%s>' % tag |
525
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|
310 |
return value |
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311 |
|
0 | 312 |
def tooltipize(text, tooltip, url=None): |
313 |
"""make an HTML tooltip""" |
|
314 |
url = url or '#' |
|
315 |
return u'<a href="%s" title="%s">%s</a>' % (url, tooltip, text) |
|
316 |
||
317 |
def toggle_action(nodeid): |
|
318 |
"""builds a HTML link that uses the js toggleVisibility function""" |
|
319 |
return u"javascript: toggleVisibility('%s')" % nodeid |
|
320 |
||
321 |
def toggle_link(nodeid, label): |
|
322 |
"""builds a HTML link that uses the js toggleVisibility function""" |
|
323 |
return u'<a href="%s">%s</a>' % (toggle_action(nodeid), label) |
|
324 |
||
325 |
||
326 |
def ureport_as_html(layout): |
|
327 |
from logilab.common.ureports import HTMLWriter |
|
328 |
formater = HTMLWriter(True) |
|
329 |
stream = StringIO() #UStringIO() don't want unicode assertion |
|
330 |
formater.format(layout, stream) |
|
331 |
res = stream.getvalue() |
|
332 |
if isinstance(res, str): |
|
333 |
res = unicode(res, 'UTF8') |
|
334 |
return res |
|
335 |
||
336 |
# traceback formatting ######################################################## |
|
337 |
||
338 |
import traceback |
|
339 |
||
340 |
def rest_traceback(info, exception): |
|
341 |
"""return a ReST formated traceback""" |
|
342 |
res = [u'Traceback\n---------\n::\n'] |
|
343 |
for stackentry in traceback.extract_tb(info[2]): |
|
344 |
res.append(u'\tFile %s, line %s, function %s' % tuple(stackentry[:3])) |
|
345 |
if stackentry[3]: |
|
346 |
res.append(u'\t %s' % stackentry[3].decode('utf-8', 'replace')) |
|
347 |
res.append(u'\n') |
|
348 |
try: |
|
349 |
res.append(u'\t Error: %s\n' % exception) |
|
350 |
except: |
|
351 |
pass |
|
352 |
return u'\n'.join(res) |
|
353 |
||
354 |
||
355 |
def html_traceback(info, exception, title='', |
|
356 |
encoding='ISO-8859-1', body=''): |
|
357 |
""" return an html formatted traceback from python exception infos. |
|
358 |
""" |
|
359 |
tcbk = info[2] |
|
360 |
stacktb = traceback.extract_tb(tcbk) |
|
361 |
strings = [] |
|
362 |
if body: |
|
363 |
strings.append(u'<div class="error_body">') |
|
364 |
# FIXME |
|
365 |
strings.append(body) |
|
366 |
strings.append(u'</div>') |
|
367 |
if title: |
|
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parents:
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|
368 |
strings.append(u'<h1 class="error">%s</h1>'% xml_escape(title)) |
0 | 369 |
try: |
2312
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parents:
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changeset
|
370 |
strings.append(u'<p class="error">%s</p>' % xml_escape(str(exception)).replace("\n","<br />")) |
0 | 371 |
except UnicodeError: |
372 |
pass |
|
373 |
strings.append(u'<div class="error_traceback">') |
|
374 |
for index, stackentry in enumerate(stacktb): |
|
375 |
strings.append(u'<b>File</b> <b class="file">%s</b>, <b>line</b> ' |
|
376 |
u'<b class="line">%s</b>, <b>function</b> ' |
|
377 |
u'<b class="function">%s</b>:<br/>'%( |
|
2312
af4d8f75c5db
use xml_escape
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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changeset
|
378 |
xml_escape(stackentry[0]), stackentry[1], xml_escape(stackentry[2]))) |
0 | 379 |
if stackentry[3]: |
2312
af4d8f75c5db
use xml_escape
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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diff
changeset
|
380 |
string = xml_escape(stackentry[3]).decode('utf-8', 'replace') |
2996
866a2c135c33
B #345282 xhtml requires to use   instead of
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
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|
381 |
strings.append(u'  %s<br/>\n' % (string)) |
0 | 382 |
# add locals info for each entry |
383 |
try: |
|
384 |
local_context = tcbk.tb_frame.f_locals |
|
385 |
html_info = [] |
|
386 |
chars = 0 |
|
387 |
for name, value in local_context.iteritems(): |
|
2312
af4d8f75c5db
use xml_escape
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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diff
changeset
|
388 |
value = xml_escape(repr(value)) |
0 | 389 |
info = u'<span class="name">%s</span>=%s, ' % (name, value) |
390 |
line_length = len(name) + len(value) |
|
391 |
chars += line_length |
|
392 |
# 150 is the result of *years* of research ;-) (CSS might be helpful here) |
|
393 |
if chars > 150: |
|
394 |
info = u'<br/>' + info |
|
395 |
chars = line_length |
|
396 |
html_info.append(info) |
|
397 |
boxid = 'ctxlevel%d' % index |
|
398 |
strings.append(u'[%s]' % toggle_link(boxid, '+')) |
|
399 |
strings.append(u'<div id="%s" class="pycontext hidden">%s</div>' % |
|
400 |
(boxid, ''.join(html_info))) |
|
401 |
tcbk = tcbk.tb_next |
|
402 |
except Exception: |
|
1581
80ee6397c087
fix rest import, html_escape in null rest_publish
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
403 |
pass # doesn't really matter if we have no context info |
0 | 404 |
strings.append(u'</div>') |
405 |
return '\n'.join(strings) |
|
406 |
||
407 |
# csv files / unicode support ################################################# |
|
408 |
||
409 |
class UnicodeCSVWriter: |
|
410 |
"""proxies calls to csv.writer.writerow to be able to deal with unicode""" |
|
1581
80ee6397c087
fix rest import, html_escape in null rest_publish
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
411 |
|
0 | 412 |
def __init__(self, wfunc, encoding, **kwargs): |
413 |
self.writer = csv.writer(self, **kwargs) |
|
414 |
self.wfunc = wfunc |
|
415 |
self.encoding = encoding |
|
416 |
||
417 |
def write(self, data): |
|
418 |
self.wfunc(data) |
|
419 |
||
420 |
def writerow(self, row): |
|
421 |
csvrow = [] |
|
422 |
for elt in row: |
|
423 |
if isinstance(elt, unicode): |
|
424 |
csvrow.append(elt.encode(self.encoding)) |
|
425 |
else: |
|
426 |
csvrow.append(str(elt)) |
|
427 |
self.writer.writerow(csvrow) |
|
428 |
||
429 |
def writerows(self, rows): |
|
430 |
for row in rows: |
|
431 |
self.writerow(row) |
|
432 |
||
433 |
||
434 |
# some decorators ############################################################# |
|
435 |
||
436 |
class limitsize(object): |
|
437 |
def __init__(self, maxsize): |
|
438 |
self.maxsize = maxsize |
|
439 |
||
440 |
def __call__(self, function): |
|
441 |
def newfunc(*args, **kwargs): |
|
442 |
ret = function(*args, **kwargs) |
|
443 |
if isinstance(ret, basestring): |
|
444 |
return ret[:self.maxsize] |
|
445 |
return ret |
|
446 |
return newfunc |
|
447 |
||
448 |
||
449 |
def htmlescape(function): |
|
450 |
def newfunc(*args, **kwargs): |
|
451 |
ret = function(*args, **kwargs) |
|
452 |
assert isinstance(ret, basestring) |
|
2312
af4d8f75c5db
use xml_escape
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2208
diff
changeset
|
453 |
return xml_escape(ret) |
0 | 454 |
return newfunc |