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## src/common/rst_xhtml_generator.py
##
## Copyright (C) 2006 Santiago Gala
## Nikos Kouremenos <kourem AT gmail.com>
## Copyright (C) 2006-2007 Yann Leboulanger <asterix AT lagaule.org>
## Copyright (C) 2007 Jean-Marie Traissard <jim AT lapin.org>
## Copyright (C) 2008 Jonathan Schleifer <js-gajim AT webkeks.org>
##
## This file is part of Gajim.
##
## Gajim is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published
## by the Free Software Foundation; version 3 only.
##
## Gajim is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Gajim. If not, see <http://www.gnu.org/licenses/>.
##
try:
from docutils import io
from docutils.core import Publisher
from docutils.parsers.rst import roles
from docutils import nodes,utils
from docutils.parsers.rst.roles import set_classes
except:
print "Requires docutils 0.4 for set_classes to be available"
def create_xhtml(text):
return None
else:
def pos_int_validator(text):
"""Validates that text can be evaluated as a positive integer."""
result = int(text)
if result < 0:
raise ValueError("Error: value '%(text)s' "
"must be a positive integer")
return result
def generate_uri_role( role_name, aliases,
anchor_text, base_url,
interpret_url, validator):
'''Creates and register a uri based "interpreted role".
Those are similar to the RFC, and PEP ones, and take
role_name:
name that will be registered
aliases:
list of alternate names
anchor_text:
text that will be used, together with the role
base_url:
base url for the link
interpret_url:
this, modulo the validated text, will be added to it
validator:
should return the validated text, or raise ValueError
'''
def uri_reference_role(role, rawtext, text, lineno, inliner,
options={}, content=[]):
try:
valid_text = validator(text)
except ValueError, e:
msg = inliner.reporter.error( e.message % dict(text=text), line=lineno)
prb = inliner.problematic(rawtext, rawtext, msg)
return [prb], [msg]
ref = base_url + interpret_url % valid_text
set_classes(options)
node = nodes.reference(rawtext, anchor_text + utils.unescape(text), refuri=ref,
**options)
return [node], []
uri_reference_role.__doc__ = """Role to make handy references to URIs.
Use as :%(role_name)s:`71` (or any of %(aliases)s).
It will use %(base_url)s+%(interpret_url)s
validator should throw a ValueError, containing optionally
a %%(text)s format, if the interpreted text is not valid.
""" % locals()
roles.register_canonical_role(role_name, uri_reference_role)
from docutils.parsers.rst.languages import en
en.roles[role_name] = role_name
for alias in aliases:
en.roles[alias] = role_name
generate_uri_role('xep-reference', ('jep', 'xep'),
'XEP #', 'http://www.xmpp.org/extensions/', 'xep-%04d.html',
pos_int_validator)
generate_uri_role('gajim-ticket-reference', ('ticket','gtrack'),
'Gajim Ticket #', 'http://trac.gajim.org/ticket/', '%d',
pos_int_validator)
class HTMLGenerator:
'''Really simple HTMLGenerator starting from publish_parts.
It reuses the docutils.core.Publisher class, which means it is *not*
threadsafe.
'''
def __init__(self,
settings_spec=None,
settings_overrides=dict(report_level=5, halt_level=5),
config_section='general'):
self.pub = Publisher(reader=None, parser=None, writer=None,
settings=None,
source_class=io.StringInput,
destination_class=io.StringOutput)
self.pub.set_components(reader_name='standalone',
parser_name='restructuredtext',
writer_name='html')
# hack: JEP-0071 does not allow HTML char entities, so we hack our way
# out of it.
# — == u"\u2014"
# a setting to only emit charater entities in the writer would be nice
# FIXME: several are emitted, and they are explicitly forbidden
# in the JEP
# == u"\u00a0"
self.pub.writer.translator_class.attribution_formats['dash'] = (
u'\u2014', '')
self.pub.process_programmatic_settings(settings_spec,
settings_overrides,
config_section)
def create_xhtml(self, text,
destination=None,
destination_path=None,
enable_exit_status=None):
''' Create xhtml for a fragment of IM dialog.
We can use the source_name to store info about
the message.'''
self.pub.set_source(text, None)
self.pub.set_destination(destination, destination_path)
output = self.pub.publish(enable_exit_status=enable_exit_status)
# kludge until we can get docutils to stop generating (rare)
# entities
return u'\u00a0'.join(self.pub.writer.parts['fragment'].strip().split(
' '))
Generator = HTMLGenerator()
def create_xhtml(text):
return Generator.create_xhtml(text)
if __name__ == '__main__':
print "test 1\n", Generator.create_xhtml("""
test::
>>> print 1
1
*I* like it. It is for :JEP:`71`
this `` should trigger`` should trigger the problem.
""")
print "test 2\n", Generator.create_xhtml("""
*test1
test2_
""")
print "test 3\n", Generator.create_xhtml(""":ticket:`316` implements :xep:`71`""")
# vim: se ts=3:
|
