uilib.py
author Sylvain Thénault <sylvain.thenault@logilab.fr>
Fri, 20 Aug 2010 08:21:15 +0200
branchstable
changeset 6126 aca6a2c357fd
parent 6106 1e6d93f70d14
child 6491 ee9a10b6620e
permissions -rw-r--r--
[repository] enabled sources refactoring: to avoid error, we should always have all known source in repo.sources_by_uri and only enabled ones in repo.sources, so we still have access to the definition of temporarily disabled sources
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# -*- coding: utf-8 -*-
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# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
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# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
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#
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# This file is part of CubicWeb.
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#
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# CubicWeb is free software: you can redistribute it and/or modify it under the
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# terms of the GNU Lesser General Public License as published by the Free
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# Software Foundation, either version 2.1 of the License, or (at your option)
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# any later version.
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#
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# 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 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 eid_param(name, eid):
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    assert eid is not None
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    if eid is None:
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        eid = ''
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    return '%s:%s' % (name, 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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    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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try:
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    from lxml import etree
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except (ImportError, AttributeError):
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    # gae environment: lxml not available
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    pass
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else:
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    def soup2xhtml(data, encoding):
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        """tidy (at least try) html soup and return the result
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0
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        Note: the function considers a string with no surrounding tag as valid
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              if <div>`data`</div> can be parsed by an XML parser
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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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        # XXX lxml 1.1 support still needed ?
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        xmltree = etree.HTML('<div>%s</div>' % data)
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        # NOTE: lxml 1.1 (etch platforms) doesn't recognize
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        #       the encoding=unicode parameter (lxml 2.0 does), this is
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        #       why we specify an encoding and re-decode to unicode later
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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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    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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    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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   221
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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 = 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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class _JS(object):
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    def __getattr__(self, attr):
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        return _JSId(attr)
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"""magic object to return strings suitable to call some javascript function with
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the given arguments (which should be correctly typed).
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>>> str(js.pouet(1, "2"))
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'pouet(1,"2")'
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>>> 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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"""
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js = _JS()
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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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    """
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    return string.replace('.', '_').replace('-', '_')
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HTML4_EMPTY_TAGS = frozenset(('base', 'meta', 'link', 'hr', 'br', 'param',
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                              'img', 'area', 'input', 'col'))
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def sgml_attributes(attrs):
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    return u' '.join(u'%s="%s"' % (attr, xml_escape(unicode(value)))
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                     for attr, value in sorted(attrs.items())
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                     if value is not None)
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def simple_sgml_tag(tag, content=None, escapecontent=True, **attrs):
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    """generation of a simple sgml tag (eg without children tags) easier
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    content and attri butes will be escaped
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    """
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    value = u'<%s' % tag
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    if attrs:
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        try:
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            attrs['class'] = attrs.pop('klass')
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        except KeyError:
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            pass
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        value += u' ' + sgml_attributes(attrs)
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    if content:
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        if escapecontent:
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            content = xml_escape(unicode(content))
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        value += u'>%s</%s>' % (content, tag)
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    else:
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        if tag in HTML4_EMPTY_TAGS:
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            value += u' />'
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        else:
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            value += u'></%s>' % tag
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    return value
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0
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def tooltipize(text, tooltip, url=None):
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    """make an HTML tooltip"""
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    url = url or '#'
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    return u'<a href="%s" title="%s">%s</a>' % (url, tooltip, text)
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def toggle_action(nodeid):
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    """builds a HTML link that uses the js toggleVisibility function"""
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    return u"javascript: toggleVisibility('%s')" % nodeid
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def toggle_link(nodeid, label):
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    """builds a HTML link that uses the js toggleVisibility function"""
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    return u'<a href="%s">%s</a>' % (toggle_action(nodeid), label)
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def ureport_as_html(layout):
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    from logilab.common.ureports import HTMLWriter
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    formater = HTMLWriter(True)
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    stream = StringIO() #UStringIO() don't want unicode assertion
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    formater.format(layout, stream)
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    res = stream.getvalue()
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    if isinstance(res, str):
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        res = unicode(res, 'UTF8')
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    return res
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# traceback formatting ########################################################
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import traceback
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def rest_traceback(info, exception):
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    """return a ReST formated traceback"""
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   347
    res = [u'Traceback\n---------\n::\n']
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   348
    for stackentry in traceback.extract_tb(info[2]):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   349
        res.append(u'\tFile %s, line %s, function %s' % tuple(stackentry[:3]))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   350
        if stackentry[3]:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   351
            res.append(u'\t  %s' % stackentry[3].decode('utf-8', 'replace'))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   352
    res.append(u'\n')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   353
    try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   354
        res.append(u'\t Error: %s\n' % exception)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   355
    except:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   356
        pass
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   357
    return u'\n'.join(res)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   358
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   359
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   360
def html_traceback(info, exception, title='',
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   361
                   encoding='ISO-8859-1', body=''):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   362
    """ return an html formatted traceback from python exception infos.
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   363
    """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   364
    tcbk = info[2]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   365
    stacktb = traceback.extract_tb(tcbk)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   366
    strings = []
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   367
    if body:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   368
        strings.append(u'<div class="error_body">')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   369
        # FIXME
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   370
        strings.append(body)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   371
        strings.append(u'</div>')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   372
    if title:
2312
af4d8f75c5db use xml_escape
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2208
diff changeset
   373
        strings.append(u'<h1 class="error">%s</h1>'% xml_escape(title))
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   374
    try:
2312
af4d8f75c5db use xml_escape
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2208
diff changeset
   375
        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
   376
    except UnicodeError:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   377
        pass
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   378
    strings.append(u'<div class="error_traceback">')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   379
    for index, stackentry in enumerate(stacktb):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   380
        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
   381
                       u'<b class="line">%s</b>, <b>function</b> '
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   382
                       u'<b class="function">%s</b>:<br/>'%(
2312
af4d8f75c5db use xml_escape
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2208
diff changeset
   383
            xml_escape(stackentry[0]), stackentry[1], xml_escape(stackentry[2])))
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   384
        if stackentry[3]:
2312
af4d8f75c5db use xml_escape
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2208
diff changeset
   385
            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
   386
            strings.append(u'&#160;&#160;%s<br/>\n' % (string))
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   387
        # add locals info for each entry
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   388
        try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   389
            local_context = tcbk.tb_frame.f_locals
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   390
            html_info = []
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   391
            chars = 0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   392
            for name, value in local_context.iteritems():
2312
af4d8f75c5db use xml_escape
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2208
diff changeset
   393
                value = xml_escape(repr(value))
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   394
                info = u'<span class="name">%s</span>=%s, ' % (name, value)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   395
                line_length = len(name) + len(value)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   396
                chars += line_length
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   397
                # 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
   398
                if chars > 150:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   399
                    info = u'<br/>' + info
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   400
                    chars = line_length
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   401
                html_info.append(info)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   402
            boxid = 'ctxlevel%d' % index
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   403
            strings.append(u'[%s]' % toggle_link(boxid, '+'))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   404
            strings.append(u'<div id="%s" class="pycontext hidden">%s</div>' %
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   405
                           (boxid, ''.join(html_info)))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   406
            tcbk = tcbk.tb_next
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   407
        except Exception:
1581
80ee6397c087 fix rest import, html_escape in null rest_publish
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   408
            pass # doesn't really matter if we have no context info
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   409
    strings.append(u'</div>')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   410
    return '\n'.join(strings)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   411
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   412
# csv files / unicode support #################################################
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   413
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   414
class UnicodeCSVWriter:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   415
    """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
   416
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   417
    def __init__(self, wfunc, encoding, **kwargs):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   418
        self.writer = csv.writer(self, **kwargs)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   419
        self.wfunc = wfunc
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   420
        self.encoding = encoding
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 write(self, data):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   423
        self.wfunc(data)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   424
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   425
    def writerow(self, row):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   426
        csvrow = []
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   427
        for elt in row:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   428
            if isinstance(elt, unicode):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   429
                csvrow.append(elt.encode(self.encoding))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   430
            else:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   431
                csvrow.append(str(elt))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   432
        self.writer.writerow(csvrow)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   433
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   434
    def writerows(self, rows):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   435
        for row in rows:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   436
            self.writerow(row)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   437
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   438
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   439
# some decorators #############################################################
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
class limitsize(object):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   442
    def __init__(self, maxsize):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   443
        self.maxsize = maxsize
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   444
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   445
    def __call__(self, function):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   446
        def newfunc(*args, **kwargs):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   447
            ret = function(*args, **kwargs)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   448
            if isinstance(ret, basestring):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   449
                return ret[:self.maxsize]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   450
            return ret
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   451
        return newfunc
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   452
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   453
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   454
def htmlescape(function):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   455
    def newfunc(*args, **kwargs):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   456
        ret = function(*args, **kwargs)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   457
        assert isinstance(ret, basestring)
2312
af4d8f75c5db use xml_escape
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2208
diff changeset
   458
        return xml_escape(ret)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   459
    return newfunc