common/uilib.py
author Aurelien Campeas <aurelien.campeas@logilab.fr>
Wed, 17 Jun 2009 20:46:37 +0200
branchstable
changeset 2114 862f27d94af4
parent 1977 606923dff11b
child 2208 1c73148ed912
permissions -rw-r--r--
one more ms planning bug
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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# -*- coding: utf-8 -*-
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"""user interface libraries
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contains some functions designed to help implementation of cubicweb user interface
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:organization: Logilab
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:copyright: 2001-2009 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.
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:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
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:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses
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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 urllib import quote as urlquote
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from StringIO import StringIO
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from logilab.mtconverter import html_escape, html_unescape
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from cubicweb.utils import ustrftime
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def rql_for_eid(eid):
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    """return the rql query necessary to fetch entity with the given eid.  This
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    function should only be used to generate link with rql inside, not to give
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    to cursor.execute (in which case you won't benefit from rql cache).
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    :Parameters:
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      - `eid`: the eid of the entity we should search
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    :rtype: str
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    :return: the rql query
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    """
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    return 'Any X WHERE X eid %s' % eid
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def printable_value(req, attrtype, value, props=None, displaytime=True):
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    """return a displayable value (i.e. unicode string)"""
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    if value is None or attrtype == 'Bytes':
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        return u''
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    if attrtype == 'String':
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        # don't translate empty value if you don't want strange results
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        if props is not None and value and props.get('internationalizable'):
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            return req._(value)
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        return value
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    if attrtype == 'Date':
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        return ustrftime(value, req.property_value('ui.date-format'))
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    if attrtype == 'Time':
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        return ustrftime(value, req.property_value('ui.time-format'))
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    if attrtype == 'Datetime':
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        if not displaytime:
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            return ustrftime(value, req.property_value('ui.date-format'))
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        return ustrftime(value, req.property_value('ui.datetime-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 html_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.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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    return data
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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 html_escape(text_nohtml[:length] + u'...')
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fallback_safe_cut = safe_cut
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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 availabel
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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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        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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        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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        return body[11:-13].decode(encoding)
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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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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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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 attributes 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' ' + u' '.join(u'%s="%s"' % (attr, html_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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    if content:
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        if escapecontent:
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            content = html_escape(unicode(content))
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        value += u'>%s</%s>' % (content, tag)
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    else:
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        value += u'/>'
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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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def render_HTML_tree(tree, selected_node=None, render_node=None, caption=None):
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    """
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    Generate a pure HTML representation of a tree given as an instance
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    of a logilab.common.tree.Node
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    selected_node is the currently selected node (if any) which will
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    have its surrounding <div> have id="selected" (which default
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    to a bold border libe with the default CSS).
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    render_node is a function that should take a Node content (Node.id)
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    as parameter and should return a string (what will be displayed
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    in the cell).
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    Warning: proper rendering of the generated html code depends on html_tree.css
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    """
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    tree_depth = tree.depth_down()
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    if render_node is None:
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        render_node = str
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    # helper function that build a matrix from the tree, like:
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    # +------+-----------+-----------+
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    # | root | child_1_1 | child_2_1 |
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    # | root | child_1_1 | child_2_2 |
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    # | root | child_1_2 |           |
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    # | root | child_1_3 | child_2_3 |
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    # | root | child_1_3 | child_2_4 |
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    # +------+-----------+-----------+
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    # from:
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    # root -+- child_1_1 -+- child_2_1
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    #       |             |
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    #       |             +- child_2_2
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    #       +- child_1_2
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    #       |
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    #       +- child1_3 -+- child_2_3
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    #                    |
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    #                    +- child_2_2
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    def build_matrix(path, matrix):
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        if path[-1].is_leaf():
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            matrix.append(path[:])
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        else:
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            for child in path[-1].children:
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                build_matrix(path[:] + [child], matrix)
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0
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    matrix = []
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    build_matrix([tree], matrix)
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    # make all lines in the matrix have the same number of columns
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    for line in matrix:
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        line.extend([None]*(tree_depth-len(line)))
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    for i in range(len(matrix)-1, 0, -1):
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        prev_line, line = matrix[i-1:i+1]
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        for j in range(len(line)):
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            if line[j] == prev_line[j]:
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                line[j] = None
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    # We build the matrix of link types (between 2 cells on a line of the matrix)
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    # link types are :
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    link_types = {(True,  True,  True ): 1, # T
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                  (False, False, True ): 2, # |
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                  (False, True,  True ): 3, # + (actually, vert. bar with horiz. bar on the right)
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                  (False, True,  False): 4, # L
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                  (True,  True,  False): 5, # -
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                  }
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    links = []
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    for i, line in enumerate(matrix):
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        links.append([])
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        for j in range(tree_depth-1):
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            cell_11 = line[j] is not None
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            cell_12 = line[j+1] is not None
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            cell_21 = line[j+1] is not None and line[j+1].next_sibling() is not None
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            link_type = link_types.get((cell_11, cell_12, cell_21), 0)
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            if link_type == 0 and i > 0 and links[i-1][j] in (1, 2, 3):
0
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                link_type = 2
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            links[-1].append(link_type)
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0
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    # We can now generate the HTML code for the <table>
0
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    s = u'<table class="tree">\n'
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   330
    if caption:
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   331
        s += '<caption>%s</caption>\n' % caption
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   333
    for i, link_line in enumerate(links):
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        line = matrix[i]
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        s += '<tr>'
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        for j, link_cell in enumerate(link_line):
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            cell = line[j]
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            if cell:
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                if cell.id == selected_node:
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   341
                    s += '<td class="tree_cell" rowspan="2"><div id="selected" class="tree_cell">%s</div></td>' % (render_node(cell.id))
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                else:
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                    s += '<td class="tree_cell" rowspan="2"><div class="tree_cell">%s</div></td>' % (render_node(cell.id))
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            else:
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                s += '<td rowspan="2">&nbsp;</td>'
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   346
            s += '<td class="tree_cell_%d_1">&nbsp;</td>' % link_cell
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            s += '<td class="tree_cell_%d_2">&nbsp;</td>' % link_cell
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0
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        cell = line[-1]
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        if cell:
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   351
            if cell.id == selected_node:
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   352
                s += '<td class="tree_cell" rowspan="2"><div id="selected" class="tree_cell">%s</div></td>' % (render_node(cell.id))
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            else:
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                s += '<td class="tree_cell" rowspan="2"><div class="tree_cell">%s</div></td>' % (render_node(cell.id))
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        else:
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   356
            s += '<td rowspan="2">&nbsp;</td>'
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   358
        s += '</tr>\n'
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   359
        if link_line:
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   360
            s += '<tr>'
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   361
            for j, link_cell in enumerate(link_line):
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   362
                s += '<td class="tree_cell_%d_3">&nbsp;</td>' % link_cell
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                s += '<td class="tree_cell_%d_4">&nbsp;</td>' % link_cell
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   364
            s += '</tr>\n'
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   365
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   366
    s += '</table>'
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   367
    return s
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   371
# 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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   377
    res = [u'Traceback\n---------\n::\n']
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    for stackentry in traceback.extract_tb(info[2]):
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   379
        res.append(u'\tFile %s, line %s, function %s' % tuple(stackentry[:3]))
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        if stackentry[3]:
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diff changeset
   381
            res.append(u'\t  %s' % stackentry[3].decode('utf-8', 'replace'))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   382
    res.append(u'\n')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   383
    try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   384
        res.append(u'\t Error: %s\n' % exception)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   385
    except:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   386
        pass
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   387
    return u'\n'.join(res)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   388
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   389
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   390
def html_traceback(info, exception, title='',
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   391
                   encoding='ISO-8859-1', body=''):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   392
    """ return an html formatted traceback from python exception infos.
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   393
    """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   394
    tcbk = info[2]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   395
    stacktb = traceback.extract_tb(tcbk)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   396
    strings = []
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   397
    if body:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   398
        strings.append(u'<div class="error_body">')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   399
        # FIXME
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   400
        strings.append(body)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   401
        strings.append(u'</div>')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   402
    if title:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   403
        strings.append(u'<h1 class="error">%s</h1>'% html_escape(title))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   404
    try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   405
        strings.append(u'<p class="error">%s</p>' % html_escape(str(exception)).replace("\n","<br />"))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   406
    except UnicodeError:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   407
        pass
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   408
    strings.append(u'<div class="error_traceback">')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   409
    for index, stackentry in enumerate(stacktb):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   410
        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
   411
                       u'<b class="line">%s</b>, <b>function</b> '
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   412
                       u'<b class="function">%s</b>:<br/>'%(
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   413
            html_escape(stackentry[0]), stackentry[1], html_escape(stackentry[2])))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   414
        if stackentry[3]:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   415
            string = html_escape(stackentry[3]).decode('utf-8', 'replace')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   416
            strings.append(u'&nbsp;&nbsp;%s<br/>\n' % (string))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   417
        # add locals info for each entry
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   418
        try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   419
            local_context = tcbk.tb_frame.f_locals
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   420
            html_info = []
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   421
            chars = 0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   422
            for name, value in local_context.iteritems():
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   423
                value = html_escape(repr(value))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   424
                info = u'<span class="name">%s</span>=%s, ' % (name, value)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   425
                line_length = len(name) + len(value)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   426
                chars += line_length
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   427
                # 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
   428
                if chars > 150:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   429
                    info = u'<br/>' + info
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   430
                    chars = line_length
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   431
                html_info.append(info)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   432
            boxid = 'ctxlevel%d' % index
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   433
            strings.append(u'[%s]' % toggle_link(boxid, '+'))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   434
            strings.append(u'<div id="%s" class="pycontext hidden">%s</div>' %
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   435
                           (boxid, ''.join(html_info)))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   436
            tcbk = tcbk.tb_next
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   437
        except Exception:
1581
80ee6397c087 fix rest import, html_escape in null rest_publish
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   438
            pass # doesn't really matter if we have no context info
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   439
    strings.append(u'</div>')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   440
    return '\n'.join(strings)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   441
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   442
# csv files / unicode support #################################################
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   443
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   444
class UnicodeCSVWriter:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   445
    """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
   446
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   447
    def __init__(self, wfunc, encoding, **kwargs):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   448
        self.writer = csv.writer(self, **kwargs)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   449
        self.wfunc = wfunc
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   450
        self.encoding = encoding
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   451
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   452
    def write(self, data):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   453
        self.wfunc(data)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   454
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   455
    def writerow(self, row):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   456
        csvrow = []
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   457
        for elt in row:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   458
            if isinstance(elt, unicode):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   459
                csvrow.append(elt.encode(self.encoding))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   460
            else:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   461
                csvrow.append(str(elt))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   462
        self.writer.writerow(csvrow)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   463
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   464
    def writerows(self, rows):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   465
        for row in rows:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   466
            self.writerow(row)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   467
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
# some decorators #############################################################
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   470
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   471
class limitsize(object):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   472
    def __init__(self, maxsize):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   473
        self.maxsize = maxsize
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   474
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   475
    def __call__(self, function):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   476
        def newfunc(*args, **kwargs):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   477
            ret = function(*args, **kwargs)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   478
            if isinstance(ret, basestring):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   479
                return ret[:self.maxsize]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   480
            return ret
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   481
        return newfunc
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   482
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   483
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   484
def htmlescape(function):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   485
    def newfunc(*args, **kwargs):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   486
        ret = function(*args, **kwargs)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   487
        assert isinstance(ret, basestring)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   488
        return html_escape(ret)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   489
    return newfunc