518 lines
19 KiB
Python
518 lines
19 KiB
Python
# w.c.s. - web application for online forms
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# Copyright (C) 2005-2010 Entr'ouvert
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, see <http://www.gnu.org/licenses/>.
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from cStringIO import StringIO
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import os
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import glob
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import xml.etree.ElementTree as ET
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from django.template import (Context as DjangoContext, Template as DjangoTemplate,
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TemplateSyntaxError as DjangoTemplateSyntaxError,
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VariableDoesNotExist as DjangoVariableDoesNotExist)
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from django.template.loader import render_to_string
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from quixote import get_session, get_request, get_response, get_publisher
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from quixote.directory import Directory
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from quixote.util import StaticDirectory, StaticFile
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from quixote.html import htmltext, htmlescape, TemplateIO
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import errors
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import ezt
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def get_template_from_script(filename):
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local_result = {}
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execfile(filename, {
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'publisher': get_publisher(),
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'request': get_request(),
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'__file__': filename}, local_result)
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return local_result.get('template_content')
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def get_theme_directory(theme_id):
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system_location = os.path.join(get_publisher().data_dir, 'themes', theme_id)
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local_location = os.path.join(get_publisher().app_dir, 'themes', theme_id)
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if os.path.exists(local_location):
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location = local_location
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elif os.path.exists(system_location):
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location = system_location
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else:
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return None
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while os.path.islink(location):
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location = os.path.join(os.path.dirname(location), os.readlink(location))
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if not os.path.exists(location):
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return None
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return location
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class ThemesDirectory(Directory):
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def _q_lookup(self, name):
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if name in ('.', '..'):
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raise errors.TraversalError()
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location = get_theme_directory(name)
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if location is None:
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raise errors.TraversalError()
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if os.path.isdir(location):
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return StaticDirectory(location)
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else:
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return StaticFile(location)
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def get_themes_dict():
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system_location = os.path.join(get_publisher().data_dir, 'themes')
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local_location = os.path.join(get_publisher().app_dir, 'themes')
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themes = {}
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for theme_xml in glob.glob(os.path.join(system_location, '*/desc.xml')) + \
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glob.glob(os.path.join(local_location, '*/desc.xml')):
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theme_dict = get_theme_dict(theme_xml)
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if not theme_dict:
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continue
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themes[theme_dict.get('name')] = theme_dict
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return themes
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def get_theme_dict(theme_xml):
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try:
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tree = ET.parse(theme_xml).getroot()
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except: # parse error
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return None
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publisher = get_publisher()
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def encode_string(x):
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if publisher:
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return unicode(x).encode(publisher.site_charset)
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return x
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name = encode_string(tree.attrib['name'])
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version = tree.attrib.get('version')
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label = encode_string(tree.findtext('label'))
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desc = encode_string(tree.findtext('desc'))
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author = encode_string(tree.findtext('author'))
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icon = None
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if type(theme_xml) is str:
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icon = os.path.join(os.path.dirname(theme_xml), 'icon.png')
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if not os.path.exists(icon):
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icon = None
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theme = {'name': name, 'label': label, 'desc': desc, 'author': author,
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'icon': icon, 'version': version}
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theme['keywords'] = []
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for keyword in tree.findall('keywords/keyword'):
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theme['keywords'].append(keyword.text)
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return theme
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def get_themes():
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# backward compatibility function, it returns a tuple with theme info,
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# newer code should use get_themes_dict()
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themes = {}
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for k, v in get_themes_dict().items():
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themes[k] = (v['label'], v['desc'], v['author'], v['icon'])
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return themes
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def get_current_theme():
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from publisher import get_cfg
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current_theme = get_cfg('branding', {}).get('theme', 'default')
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system_location = os.path.join(get_publisher().data_dir, 'themes', current_theme)
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local_location = os.path.join(get_publisher().app_dir, 'themes', current_theme)
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for location in (local_location, system_location):
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if os.path.exists(location):
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return get_theme_dict(os.path.join(location, 'desc.xml'))
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default_theme_location = os.path.join(get_publisher().data_dir, 'themes', 'default')
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return get_theme_dict(os.path.join(default_theme_location, 'desc.xml'))
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DEFAULT_TEMPLATE_EZT = """<!DOCTYPE html>
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<html lang="[site_lang]">
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<head>
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<title>[page_title]</title>
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<link rel="stylesheet" type="text/css" href="[css]"/>
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[script]
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</head>
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<body[if-any onload] onload="[onload]"[end]>
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<div id="page">
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<div id="top"> <h1>[if-any title][title][else][site_name][end]</h1> </div>
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<div id="main-content">
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[if-any breadcrumb]<p id="breadcrumb">[breadcrumb]</p>[end]
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[body]
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</div>
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<div id="footer">[if-any footer][footer][end]</div>
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</div>
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</body>
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</html>"""
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DEFAULT_IFRAME_EZT = """<!DOCTYPE html>
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<html lang="[site_lang]">
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<head>
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<title>[page_title]</title>
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<link rel="stylesheet" type="text/css" href="[css]"/>
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[script]
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</head>
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<body[if-any onload] onload="[onload]"[end]>
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<div id="main-content">
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[if-any breadcrumb]<p id="breadcrumb">[breadcrumb]</p>[end]
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[body]
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</div>
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</body>
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</html>"""
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default_template = ezt.Template()
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default_template.parse(DEFAULT_TEMPLATE_EZT)
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default_iframe_template = ezt.Template()
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default_iframe_template.parse(DEFAULT_IFRAME_EZT)
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def html_top(title=None, default_org=None):
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if not hasattr(get_response(), 'filter'):
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get_response().filter = {}
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get_response().filter['title'] = title
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get_response().filter['default_org'] = default_org
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def error_page(error_message, error_title = None, exception = None, continue_to = None,
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location_hint = None):
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from qommon import _
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if not error_title:
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error_title = _('Error')
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if exception:
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root_url = get_publisher().get_root_url()
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get_response().add_javascript(['jquery.js', 'exception.js'])
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kwargs = {'title': error_title}
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if location_hint == 'backoffice':
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import qommon.backoffice.menu
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error_html_top = qommon.backoffice.menu.html_top
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kwargs[str('section')] = None
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else:
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error_html_top = html_top
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r = TemplateIO(html=True)
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error_html_top(**kwargs)
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r += htmltext('<div class="error-page">')
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r += htmltext('<p>%s</p>') % error_message
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if exception and get_publisher().logger.error_email:
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r += htmltext('<p>%s</p>') % _('It has been sent to the site administrator for analyse.')
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if continue_to:
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continue_link = htmltext('<a href="%s">%s</a>') % continue_to
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r += htmltext('<p>%s</p>') % htmltext(_('Continue to %s')) % continue_link
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if exception:
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r += htmltext('<p><a id="display-exception">%s</a></p>') % _('View Error Details')
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r += htmltext('<pre id="exception"><code>%s</code></pre>') % exception.encode(get_publisher().site_charset)
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r += htmltext('</div>')
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return htmltext(r.getvalue())
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def get_default_ezt_template():
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from publisher import get_cfg
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current_theme = get_cfg('branding', {}).get('theme', 'default')
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filename = os.path.join(get_publisher().app_dir, 'themes',
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current_theme, 'template.%s.ezt' % get_publisher().APP_NAME)
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if os.path.exists(filename):
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return file(filename).read()
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filename = os.path.join(get_publisher().data_dir, 'themes',
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current_theme, 'template.%s.ezt' % get_publisher().APP_NAME)
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if os.path.exists(filename):
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return file(filename).read()
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filename = os.path.join(get_publisher().app_dir, 'themes', current_theme, 'template.ezt')
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if os.path.exists(filename):
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return file(filename).read()
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filename = os.path.join(get_publisher().data_dir, 'themes', current_theme, 'template.ezt')
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if os.path.exists(filename):
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return file(filename).read()
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return DEFAULT_TEMPLATE_EZT
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def get_decorate_vars(body, response, generate_breadcrumb=True):
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from publisher import get_cfg
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body = str(body)
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if get_request().get_header('x-popup') == 'true' or response.content_type != 'text/html':
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return {'body': body}
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kwargs = {}
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for k, v in response.filter.items():
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if v:
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kwargs[k] = str(v)
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if not kwargs.has_key('lang') and hasattr(get_request(), 'language'):
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response.filter['lang'] = get_request().language
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if 'rel="popup"' in body or 'rel="popup"' in kwargs.get('sidebar', ''):
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response.add_javascript(['jquery.js', 'jquery-ui.js', 'popup.js', 'widget_list.js'])
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if 'data-geolocation' in body:
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response.add_javascript(['qommon.geolocation.js'])
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onload = kwargs.get('onload')
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org_name = get_cfg('sp', {}).get('organization_name',
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kwargs.get('default_org', get_publisher().APP_NAME))
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site_name = get_cfg('misc', {}).get('sitename', org_name)
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current_theme = get_cfg('branding', {}).get('theme', get_publisher().default_theme)
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if kwargs.get('title'):
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title = kwargs.get('title')
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page_title = '%s - %s' % (site_name, title)
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title_or_orgname = title
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else:
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page_title = site_name
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title = None
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title_or_orgname = site_name
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script = kwargs.get('script') or ''
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script += response.get_css_includes_for_header()
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script += response.get_javascript_for_header()
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try:
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user = get_request().user
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except:
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user = None
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if type(user) in (int, str) and get_session():
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try:
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user = get_session().get_user_object()
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except KeyError:
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pass
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root_url = get_publisher().get_application_static_files_root_url()
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theme_url = '%sthemes/%s' % (root_url, current_theme)
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is_in_backoffice = response.filter.get('admin_ezt')
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if is_in_backoffice:
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header_menu = kwargs.get('header_menu')
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user_info = kwargs.get('user_info')
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page_title = kwargs.get('sitetitle', '') + kwargs.get('title', '')
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subtitle = kwargs.get('subtitle')
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sidebar = kwargs.get('sidebar')
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css = root_url + get_publisher().qommon_static_dir + get_publisher().qommon_admin_css
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app_dir_filename = os.path.join(get_publisher().app_dir, 'themes',
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current_theme, 'admin.css')
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data_dir_filename = os.path.join(get_publisher().data_dir, 'themes',
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current_theme, 'admin.css')
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for filename in (app_dir_filename, data_dir_filename):
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if os.path.exists(filename):
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extra_css = root_url + 'themes/%s/admin.css' % current_theme
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break
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extra_head = get_publisher().get_site_option('backoffice_extra_head')
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app_label = get_publisher().get_site_option('app_label') or 'w.c.s.'
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else:
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if current_theme == 'default':
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css = root_url + 'static/css/%s.css' % get_publisher().APP_NAME
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else:
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css = root_url + 'themes/%s/%s.css' % (current_theme, get_publisher().APP_NAME)
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# this variable is kept in locals() as it was once part of the default
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# template and existing installations may have template changes that
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# still have it.
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prelude = ''
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if generate_breadcrumb:
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breadcrumb = ''
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if hasattr(response, 'breadcrumb') and response.breadcrumb:
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s = []
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path = root_url
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if is_in_backoffice:
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path += response.breadcrumb[0][0]
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response.breadcrumb = response.breadcrumb[1:]
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total_len = sum([len(str(x[1])) for x in response.breadcrumb if x[1] is not None])
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for component, label in response.breadcrumb:
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if component.startswith('http:') or component.startswith('https:'):
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s.append('<a href="%s">%s</a>' % (component, label))
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continue
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if label is not None:
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if type(label) is str:
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label = htmlescape(label)
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if not is_in_backoffice and (total_len > 80 and len(label) > 10 and
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response.breadcrumb[-1] != (component, label)):
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s.append('<a href="%s%s" title="%s">%s</a>' % (
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path, component, label, '...'))
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else:
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s.append('<a href="%s%s">%s</a>' % (path, component, label))
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path += component
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breadcrumb = ' <span class="separator">></span> '.join(s)
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vars = response.filter.copy()
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vars.update(get_publisher().substitutions.get_context_variables())
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vars.update(locals())
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return vars
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def decorate(body, response):
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if get_request().get_header('x-popup') == 'true':
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return '''<div class="popup-content"> %s </div>''' % body
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from publisher import get_cfg
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generate_breadcrumb = True
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if True:
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template_ezt = get_cfg('branding', {}).get('template')
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current_theme = get_cfg('branding', {}).get('theme', 'default')
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if response.page_template_key or not template_ezt:
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# the theme can provide a default template
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possible_filenames = []
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if response.page_template_key:
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possible_filenames.append('template.%s.%s.ezt' % (
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get_publisher().APP_NAME, response.page_template_key))
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possible_filenames.append('template.%s.ezt' % response.page_template_key)
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possible_filenames.append('template.%s.ezt' % get_publisher().APP_NAME)
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possible_filenames.append('template.ezt')
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possible_dirnames = [
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os.path.join(get_publisher().app_dir, 'themes', current_theme),
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os.path.join(get_publisher().data_dir, 'themes', current_theme),
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os.path.join(get_publisher().data_dir, 'themes', 'default'),
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]
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for fname in possible_filenames:
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for dname in possible_dirnames:
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filename = os.path.join(dname, fname)
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if os.path.exists(filename):
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template_ezt = file(filename).read()
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break
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else:
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continue
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break
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if template_ezt:
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generate_breadcrumb = ('[breadcrumb]' in template_ezt)
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template = ezt.Template()
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template.parse(template_ezt)
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else:
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if response.page_template_key == 'iframe':
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template = default_iframe_template
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else:
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template = default_template
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fd = StringIO()
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vars = get_decorate_vars(body, response,
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generate_breadcrumb=generate_breadcrumb)
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template.generate(fd, vars)
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return fd.getvalue()
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def render(template_name, context):
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return htmltext(render_to_string(template_name, context).encode('utf-8'))
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class TemplateError(Exception):
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def __init__(self, msg, params=()):
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self.msg = msg
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self.params = params
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def __str__(self):
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return self.msg % self.params
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def ezt_raises(exception, on_parse=False):
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from qommon import _
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parts = []
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parts.append({
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ezt.ArgCountSyntaxError: _('wrong number of arguments'),
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ezt.UnknownReference: _('unknown reference'),
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ezt.NeedSequenceError: _('sequence required'),
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ezt.UnclosedBlocksError: _('unclosed block'),
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ezt.UnmatchedEndError: _('unmatched [end]'),
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ezt.UnmatchedElseError: _('unmatched [else]'),
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ezt.BaseUnavailableError: _('unavailable base location'),
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ezt.BadFormatConstantError: _('bad format constant'),
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ezt.UnknownFormatConstantError: _('unknown format constant'),
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}.get(exception.__class__, _('unknown error')))
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if exception.line is not None:
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parts.append(_('at line %(line)d and column %(column)d') % {
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'line': exception.line + 1, 'column': exception.column + 1})
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if on_parse:
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message = _('syntax error in ezt template: %s')
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else:
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message = _('failure to render ezt template: %s')
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raise TemplateError(message % ' '.join(parts))
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class UnicodeDjangoContext(DjangoContext):
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def __getitem__(self, key):
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s = super(UnicodeDjangoContext, self).__getitem__(key)
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if isinstance(s, str):
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return unicode(s, 'utf-8')
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return s
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class Template(object):
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def __init__(self, value, raises=False, ezt_format=ezt.FORMAT_RAW, ezt_only=False):
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'''Guess kind of template (Django or ezt), and parse it'''
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self.value = value
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self.raises = raises
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if ('{{' in value or '{%' in value) and not ezt_only: # Django template
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self.render = self.django_render
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try:
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self.template = DjangoTemplate(value)
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except DjangoTemplateSyntaxError as e:
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if raises:
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from qommon import _
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raise TemplateError(_('syntax error in Django template: %s'), e)
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self.render = self.null_render
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elif '[' in value: # ezt template
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self.render = self.ezt_render
|
|
self.template = ezt.Template(compress_whitespace=False)
|
|
try:
|
|
self.template.parse(value, base_format=ezt_format)
|
|
except ezt.EZTException as e:
|
|
if raises:
|
|
ezt_raises(e, on_parse=True)
|
|
self.render = self.null_render
|
|
|
|
else:
|
|
self.render = self.null_render
|
|
|
|
def null_render(self, context={}):
|
|
return str(self.value)
|
|
|
|
def django_render(self, context={}):
|
|
context = UnicodeDjangoContext(context)
|
|
try:
|
|
rendered = self.template.render(context)
|
|
except (DjangoTemplateSyntaxError, DjangoVariableDoesNotExist) as e:
|
|
if self.raises:
|
|
from qommon import _
|
|
raise TemplateError(_('failure to render Django template: %s'), e)
|
|
else:
|
|
return self.value
|
|
return rendered.encode(get_publisher().site_charset)
|
|
|
|
def ezt_render(self, context={}):
|
|
fd = StringIO()
|
|
try:
|
|
self.template.generate(fd, context)
|
|
except ezt.EZTException as e:
|
|
if self.raises:
|
|
ezt_raises(e)
|
|
else:
|
|
return self.value
|
|
return fd.getvalue()
|
|
|
|
@classmethod
|
|
def is_template_string(cls, string):
|
|
return string and ('{{' in string or '{%' in string or '[' in string)
|