uilib.py
author Pierre-Yves David <pierre-yves.david@logilab.fr>
Mon, 25 Mar 2013 15:28:18 +0100
changeset 8787 1b3b7284377f
parent 8301 1385e05afe52
child 9326 9d145b4c4e53
permissions -rw-r--r--
[session] allow writable tx_attr and use it for commit_state This keep clarifying the code.
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# -*- coding: utf-8 -*-
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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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"""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 logilab.common.deprecation import deprecated
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from cubicweb.utils import JSString, 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 eid_param(name, eid):
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    assert name is not None
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    assert eid is not None
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    return '%s:%s' % (name, eid)
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def print_bytes(value, req, props, displaytime=True):
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    return u''
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def print_string(value, req, props, displaytime=True):
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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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def print_int(value, req, props, displaytime=True):
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    return unicode(value)
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def print_date(value, req, props, displaytime=True):
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    return ustrftime(value, req.property_value('ui.date-format'))
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def print_time(value, req, props, displaytime=True):
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    return ustrftime(value, req.property_value('ui.time-format'))
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def print_tztime(value, req, props, displaytime=True):
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    return ustrftime(value, req.property_value('ui.time-format')) + u' UTC'
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def print_datetime(value, req, props, displaytime=True):
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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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def print_tzdatetime(value, req, props, displaytime=True):
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    if displaytime:
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        return ustrftime(value, req.property_value('ui.datetime-format')) + u' UTC'
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    return ustrftime(value, req.property_value('ui.date-format'))
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_('%d years')
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_('%d months')
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_('%d weeks')
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_('%d days')
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_('%d hours')
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_('%d minutes')
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_('%d seconds')
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def print_timedelta(value, req, props, displaytime=True):
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    if isinstance(value, (int, long)):
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        # `date - date`, unlike `datetime - datetime` gives an int
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        # (number of days), not a timedelta
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        # XXX should rql be fixed to return Int instead of Interval in
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        #     that case? that would be probably the proper fix but we
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        #     loose information on the way...
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        value = timedelta(days=value)
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   102
    if value.days > 730 or value.days < -730: # 2 years
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   103
        return req._('%d years') % (value.days // 365)
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diff changeset
   104
    elif value.days > 60 or value.days < -60: # 2 months
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   105
        return req._('%d months') % (value.days // 30)
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diff changeset
   106
    elif value.days > 14 or value.days < -14: # 2 weeks
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   107
        return req._('%d weeks') % (value.days // 7)
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diff changeset
   108
    elif value.days > 2 or value.days < -2:
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   109
        return req._('%d days') % int(value.days)
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   110
    else:
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   111
        minus = 1 if value.days >= 0 else -1
7913
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   112
        if value.seconds > 3600:
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   113
            return req._('%d hours') % (int(value.seconds // 3600) * minus)
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   114
        elif value.seconds >= 120:
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   115
            return req._('%d minutes') % (int(value.seconds // 60) * minus)
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   116
        else:
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   117
            return req._('%d seconds') % (int(value.seconds) * minus)
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   118
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   119
def print_boolean(value, req, props, displaytime=True):
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   120
    if value:
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   121
        return req._('yes')
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   122
    return req._('no')
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   123
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   124
def print_float(value, req, props, displaytime=True):
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   125
    return unicode(req.property_value('ui.float-format') % value)
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   126
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   127
PRINTERS = {
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   128
    'Bytes': print_bytes,
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   129
    'String': print_string,
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   130
    'Int': print_int,
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   131
    'BigInt': print_int,
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   132
    'Date': print_date,
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   133
    'Time': print_time,
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   134
    'TZTime': print_tztime,
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   135
    'Datetime': print_datetime,
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   136
    'TZDatetime': print_tzdatetime,
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   137
    'Boolean': print_boolean,
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   138
    'Float': print_float,
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   139
    'Decimal': print_float,
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   140
    'Interval': print_timedelta,
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   141
    }
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   142
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   143
@deprecated('[3.14] use req.printable_value(attrtype, value, ...)')
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   144
def printable_value(req, attrtype, value, props=None, displaytime=True):
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   145
    return req.printable_value(attrtype, value, props, displaytime)
0
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   147
def css_em_num_value(vreg, propname, default):
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   148
    """ we try to read an 'em' css property
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    if we get another unit we're out of luck and resort to the given default
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   150
    (hence, it is strongly advised not to specify but ems for this css prop)
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   151
    """
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   152
    propvalue = vreg.config.uiprops[propname].lower().strip()
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   153
    if propvalue.endswith('em'):
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   154
        try:
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   155
            return float(propvalue[:-2])
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   156
        except Exception:
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   157
            vreg.warning('css property %s looks malformed (%r)',
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   158
                         propname, propvalue)
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   159
    else:
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diff changeset
   160
        vreg.warning('css property %s should use em (currently is %r)',
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   161
                     propname, propvalue)
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   162
    return default
0
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# text publishing #############################################################
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   166
try:
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   167
    from cubicweb.ext.rest import rest_publish # pylint: disable=W0611
0
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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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   171
        return xml_escape(data)
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   172
0
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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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   183
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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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   187
    return u'<a href="%s">%s</a>' % (view._cw.build_url(rql=rql), descr)
0
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   188
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def html_publish(view, text):
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    """replace <ref rql=''> links by <a href="...">"""
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   191
    if not text:
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        return u''
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   193
    return REF_PROG.sub(lambda obj, view=view:_subst_rql(view, obj), text)
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   194
277
a11a3c231050 fix lxml is available, we can have a nicer version of soup2xhtml even if its lxml < 2.0
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   195
# fallback implementation, nicer one defined below if lxml> 2.0 is available
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   196
def safe_cut(text, length):
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   197
    """returns a string of length <length> based on <text>, removing any html
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   198
    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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    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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fallback_safe_cut = safe_cut
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REM_ROOT_HTML_TAGS = re.compile('</(body|html)>', re.U)
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from lxml import etree, html
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from lxml.html import clean, defs
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ALLOWED_TAGS = (defs.general_block_tags | defs.list_tags | defs.table_tags |
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                defs.phrase_tags | defs.font_style_tags |
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                set(('span', 'a', 'br', 'img', 'map', 'area', 'sub', 'sup'))
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                )
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CLEANER = clean.Cleaner(allow_tags=ALLOWED_TAGS, remove_unknown_tags=False,
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                        style=True, safe_attrs_only=True,
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                        add_nofollow=False,
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                        )
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def soup2xhtml(data, encoding):
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    """tidy html soup by allowing some element tags and return the result
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    """
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    # remove spurious </body> and </html> tags, then normalize line break
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    # (see http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.7.1)
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    data = REM_ROOT_HTML_TAGS.sub('', u'\n'.join(data.splitlines()))
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    xmltree = etree.HTML(CLEANER.clean_html('<div>%s</div>' % data))
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    # NOTE: lxml 2.0 does support encoding='unicode', but last time I (syt)
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    # tried I got weird results (lxml 2.2.8)
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    body = etree.tostring(xmltree[0], encoding=encoding)
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    # remove <body> and </body> and decode to unicode
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    snippet = body[6:-7].decode(encoding)
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    # take care to bad xhtml (for instance starting with </div>) which
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    # may mess with the <div> we added below. Only remove it if it's
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    # still there...
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    if snippet.startswith('<div>') and snippet.endswith('</div>'):
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        snippet = snippet[5:-6]
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    return snippet
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    # lxml.Cleaner envelops text elements by internal logic (not accessible)
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    # see http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.7.1
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    # TODO drop attributes in elements
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    # TODO add policy configuration (content only, embedded content, ...)
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    # XXX this is buggy for "<p>text1</p><p>text2</p>"...
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    # XXX drop these two snippets action and follow the lxml behaviour
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    # XXX (tests need to be updated)
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    # if snippet.startswith('<div>') and snippet.endswith('</div>'):
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    #     snippet = snippet[5:-6]
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    # if snippet.startswith('<p>') and snippet.endswith('</p>'):
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    #     snippet = snippet[3:-4]
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    return snippet.decode(encoding)
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if hasattr(etree.HTML('<div>test</div>'), 'iter'): # XXX still necessary?
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    # pylint: disable=E0102
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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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350
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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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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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0
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# HTML generation helper functions ############################################
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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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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 = []
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        for arg in self.args:
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            if isinstance(arg, JSString):
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                args.append(arg)
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            else:
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                args.append(json_dumps(arg))
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        if self.parent:
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            return u'%s(%s)' % (self.parent, ','.join(args))
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        return ','.join(args)
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class _JS(object):
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    def __getattr__(self, attr):
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   363
        return _JSId(attr)
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   364
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   365
js = _JS()
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   366
js.__doc__ = """\
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magic object to return strings suitable to call some javascript function with
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   368
the given arguments (which should be correctly typed).
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   370
>>> str(js.pouet(1, "2"))
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'pouet(1,"2")'
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   372
>>> str(js.cw.pouet(1, "2"))
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'cw.pouet(1,"2")'
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>>> str(js.cw.pouet(1, "2").pouet(None))
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'cw.pouet(1,"2").pouet(null)'
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>>> str(js.cw.pouet(1, JSString("$")).pouet(None))
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'cw.pouet(1,$).pouet(null)'
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"""
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def domid(string):
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    """return a valid DOM id from a string (should also be usable in jQuery
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    search expression...)
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   383
    """
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   384
    return string.replace('.', '_').replace('-', '_')
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   385
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   386
HTML4_EMPTY_TAGS = frozenset(('base', 'meta', 'link', 'hr', 'br', 'param',
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   387
                              'img', 'area', 'input', 'col'))
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   388
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   389
def sgml_attributes(attrs):
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   390
    return u' '.join(u'%s="%s"' % (attr, xml_escape(unicode(value)))
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   391
                     for attr, value in sorted(attrs.items())
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   392
                     if value is not None)
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1623
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diff changeset
   394
def simple_sgml_tag(tag, content=None, escapecontent=True, **attrs):
525
bd4e03297cf0 function to make generation of a simple sgml tag
sylvain.thenault@logilab.fr
parents: 362
diff changeset
   395
    """generation of a simple sgml tag (eg without children tags) easier
bd4e03297cf0 function to make generation of a simple sgml tag
sylvain.thenault@logilab.fr
parents: 362
diff changeset
   396
2399
68799e25f893 a standard-conformant fix for sgml_tags
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 2375
diff changeset
   397
    content and attri butes will be escaped
525
bd4e03297cf0 function to make generation of a simple sgml tag
sylvain.thenault@logilab.fr
parents: 362
diff changeset
   398
    """
bd4e03297cf0 function to make generation of a simple sgml tag
sylvain.thenault@logilab.fr
parents: 362
diff changeset
   399
    value = u'<%s' % tag
bd4e03297cf0 function to make generation of a simple sgml tag
sylvain.thenault@logilab.fr
parents: 362
diff changeset
   400
    if attrs:
980
59552ba2015f more tags, map klass -> class avoiding needs to use **dict
sylvain.thenault@logilab.fr
parents: 862
diff changeset
   401
        try:
59552ba2015f more tags, map klass -> class avoiding needs to use **dict
sylvain.thenault@logilab.fr
parents: 862
diff changeset
   402
            attrs['class'] = attrs.pop('klass')
59552ba2015f more tags, map klass -> class avoiding needs to use **dict
sylvain.thenault@logilab.fr
parents: 862
diff changeset
   403
        except KeyError:
59552ba2015f more tags, map klass -> class avoiding needs to use **dict
sylvain.thenault@logilab.fr
parents: 862
diff changeset
   404
            pass
2516
b58826130680 extract function: sgml_attributes
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2458
diff changeset
   405
        value += u' ' + sgml_attributes(attrs)
525
bd4e03297cf0 function to make generation of a simple sgml tag
sylvain.thenault@logilab.fr
parents: 362
diff changeset
   406
    if content:
1623
sylvain.thenault@logilab.fr
parents: 1581
diff changeset
   407
        if escapecontent:
2312
af4d8f75c5db use xml_escape
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2208
diff changeset
   408
            content = xml_escape(unicode(content))
1623
sylvain.thenault@logilab.fr
parents: 1581
diff changeset
   409
        value += u'>%s</%s>' % (content, tag)
525
bd4e03297cf0 function to make generation of a simple sgml tag
sylvain.thenault@logilab.fr
parents: 362
diff changeset
   410
    else:
2398
a8d18e320ef3 a standard-conformant fix for sgml_tags
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 2375
diff changeset
   411
        if tag in HTML4_EMPTY_TAGS:
a8d18e320ef3 a standard-conformant fix for sgml_tags
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 2375
diff changeset
   412
            value += u' />'
a8d18e320ef3 a standard-conformant fix for sgml_tags
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 2375
diff changeset
   413
        else:
a8d18e320ef3 a standard-conformant fix for sgml_tags
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 2375
diff changeset
   414
            value += u'></%s>' % tag
525
bd4e03297cf0 function to make generation of a simple sgml tag
sylvain.thenault@logilab.fr
parents: 362
diff changeset
   415
    return value
bd4e03297cf0 function to make generation of a simple sgml tag
sylvain.thenault@logilab.fr
parents: 362
diff changeset
   416
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   417
def tooltipize(text, tooltip, url=None):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   418
    """make an HTML tooltip"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   419
    url = url or '#'
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   420
    return u'<a href="%s" title="%s">%s</a>' % (url, tooltip, text)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   421
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   422
def toggle_action(nodeid):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   423
    """builds a HTML link that uses the js toggleVisibility function"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   424
    return u"javascript: toggleVisibility('%s')" % nodeid
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   425
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   426
def toggle_link(nodeid, label):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   427
    """builds a HTML link that uses the js toggleVisibility function"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   428
    return u'<a href="%s">%s</a>' % (toggle_action(nodeid), label)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   429
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   430
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   431
def ureport_as_html(layout):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   432
    from logilab.common.ureports import HTMLWriter
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   433
    formater = HTMLWriter(True)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   434
    stream = StringIO() #UStringIO() don't want unicode assertion
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   435
    formater.format(layout, stream)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   436
    res = stream.getvalue()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   437
    if isinstance(res, str):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   438
        res = unicode(res, 'UTF8')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   439
    return res
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   440
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   441
# traceback formatting ########################################################
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   442
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   443
import traceback
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   444
6683
68cfebd3b9f3 fix #724689: exception's display during ajax call
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6491
diff changeset
   445
def exc_message(ex, encoding):
68cfebd3b9f3 fix #724689: exception's display during ajax call
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6491
diff changeset
   446
    try:
68cfebd3b9f3 fix #724689: exception's display during ajax call
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6491
diff changeset
   447
        return unicode(ex)
7815
2a164a9cf81c [exceptions] stop catching any exception in various places (closes #1942716)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7662
diff changeset
   448
    except Exception:
6683
68cfebd3b9f3 fix #724689: exception's display during ajax call
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6491
diff changeset
   449
        try:
68cfebd3b9f3 fix #724689: exception's display during ajax call
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6491
diff changeset
   450
            return unicode(str(ex), encoding, 'replace')
7815
2a164a9cf81c [exceptions] stop catching any exception in various places (closes #1942716)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7662
diff changeset
   451
        except Exception:
6683
68cfebd3b9f3 fix #724689: exception's display during ajax call
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6491
diff changeset
   452
            return unicode(repr(ex), encoding, 'replace')
68cfebd3b9f3 fix #724689: exception's display during ajax call
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6491
diff changeset
   453
68cfebd3b9f3 fix #724689: exception's display during ajax call
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6491
diff changeset
   454
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   455
def rest_traceback(info, exception):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   456
    """return a ReST formated traceback"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   457
    res = [u'Traceback\n---------\n::\n']
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   458
    for stackentry in traceback.extract_tb(info[2]):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   459
        res.append(u'\tFile %s, line %s, function %s' % tuple(stackentry[:3]))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   460
        if stackentry[3]:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   461
            res.append(u'\t  %s' % stackentry[3].decode('utf-8', 'replace'))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   462
    res.append(u'\n')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   463
    try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   464
        res.append(u'\t Error: %s\n' % exception)
7815
2a164a9cf81c [exceptions] stop catching any exception in various places (closes #1942716)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7662
diff changeset
   465
    except Exception:
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   466
        pass
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   467
    return u'\n'.join(res)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   468
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   469
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   470
def html_traceback(info, exception, title='',
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   471
                   encoding='ISO-8859-1', body=''):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   472
    """ return an html formatted traceback from python exception infos.
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   473
    """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   474
    tcbk = info[2]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   475
    stacktb = traceback.extract_tb(tcbk)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   476
    strings = []
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   477
    if body:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   478
        strings.append(u'<div class="error_body">')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   479
        # FIXME
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   480
        strings.append(body)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   481
        strings.append(u'</div>')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   482
    if title:
2312
af4d8f75c5db use xml_escape
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2208
diff changeset
   483
        strings.append(u'<h1 class="error">%s</h1>'% xml_escape(title))
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   484
    try:
2312
af4d8f75c5db use xml_escape
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2208
diff changeset
   485
        strings.append(u'<p class="error">%s</p>' % xml_escape(str(exception)).replace("\n","<br />"))
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   486
    except UnicodeError:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   487
        pass
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   488
    strings.append(u'<div class="error_traceback">')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   489
    for index, stackentry in enumerate(stacktb):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   490
        strings.append(u'<b>File</b> <b class="file">%s</b>, <b>line</b> '
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   491
                       u'<b class="line">%s</b>, <b>function</b> '
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   492
                       u'<b class="function">%s</b>:<br/>'%(
2312
af4d8f75c5db use xml_escape
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2208
diff changeset
   493
            xml_escape(stackentry[0]), stackentry[1], xml_escape(stackentry[2])))
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   494
        if stackentry[3]:
2312
af4d8f75c5db use xml_escape
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2208
diff changeset
   495
            string = xml_escape(stackentry[3]).decode('utf-8', 'replace')
2996
866a2c135c33 B #345282 xhtml requires to use &#160; instead of &nbsp;
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents: 2516
diff changeset
   496
            strings.append(u'&#160;&#160;%s<br/>\n' % (string))
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   497
        # add locals info for each entry
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   498
        try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   499
            local_context = tcbk.tb_frame.f_locals
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   500
            html_info = []
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   501
            chars = 0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   502
            for name, value in local_context.iteritems():
2312
af4d8f75c5db use xml_escape
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2208
diff changeset
   503
                value = xml_escape(repr(value))
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   504
                info = u'<span class="name">%s</span>=%s, ' % (name, value)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   505
                line_length = len(name) + len(value)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   506
                chars += line_length
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   507
                # 150 is the result of *years* of research ;-) (CSS might be helpful here)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   508
                if chars > 150:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   509
                    info = u'<br/>' + info
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   510
                    chars = line_length
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   511
                html_info.append(info)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   512
            boxid = 'ctxlevel%d' % index
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   513
            strings.append(u'[%s]' % toggle_link(boxid, '+'))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   514
            strings.append(u'<div id="%s" class="pycontext hidden">%s</div>' %
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   515
                           (boxid, ''.join(html_info)))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   516
            tcbk = tcbk.tb_next
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   517
        except Exception:
1581
80ee6397c087 fix rest import, html_escape in null rest_publish
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   518
            pass # doesn't really matter if we have no context info
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   519
    strings.append(u'</div>')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   520
    return '\n'.join(strings)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   521
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   522
# csv files / unicode support #################################################
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   523
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   524
class UnicodeCSVWriter:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   525
    """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
   526
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   527
    def __init__(self, wfunc, encoding, **kwargs):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   528
        self.writer = csv.writer(self, **kwargs)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   529
        self.wfunc = wfunc
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   530
        self.encoding = encoding
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   531
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   532
    def write(self, data):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   533
        self.wfunc(data)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   534
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   535
    def writerow(self, row):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   536
        csvrow = []
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   537
        for elt in row:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   538
            if isinstance(elt, unicode):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   539
                csvrow.append(elt.encode(self.encoding))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   540
            else:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   541
                csvrow.append(str(elt))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   542
        self.writer.writerow(csvrow)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   543
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   544
    def writerows(self, rows):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   545
        for row in rows:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   546
            self.writerow(row)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   547
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   548
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   549
# some decorators #############################################################
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   550
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   551
class limitsize(object):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   552
    def __init__(self, maxsize):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   553
        self.maxsize = maxsize
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   554
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   555
    def __call__(self, function):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   556
        def newfunc(*args, **kwargs):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   557
            ret = function(*args, **kwargs)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   558
            if isinstance(ret, basestring):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   559
                return ret[:self.maxsize]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   560
            return ret
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   561
        return newfunc
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   562
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   563
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   564
def htmlescape(function):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   565
    def newfunc(*args, **kwargs):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   566
        ret = function(*args, **kwargs)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   567
        assert isinstance(ret, basestring)
2312
af4d8f75c5db use xml_escape
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2208
diff changeset
   568
        return xml_escape(ret)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   569
    return newfunc