author | Aurelien Campeas <aurelien.campeas@logilab.fr> |
Fri, 23 Apr 2010 20:06:04 +0200 | |
branch | stable |
changeset 5400 | b7ab099b128a |
parent 4771 | e27d23f875c6 |
child 5421 | 8167de96c523 |
permissions | -rw-r--r-- |
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"""rest publishing functions |
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contains some functions and setup of docutils for cubicweb. Provides the |
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following ReST directives: |
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* `eid`, create link to entity in the repository by their eid |
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* `card`, create link to card entity in the repository by their wikiid |
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(proposing to create it when the refered card doesn't exist yet) |
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* `winclude`, reference to a web documentation file (in wdoc/ directories) |
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* `sourcecode` (if pygments is installed), source code colorization |
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:organization: Logilab |
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update copyright: welcome 2010
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:copyright: 2001-2010 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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from cStringIO import StringIO |
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from itertools import chain |
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from logging import getLogger |
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from os.path import join |
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from docutils import statemachine, nodes, utils, io |
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from docutils.core import Publisher |
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from docutils.parsers.rst import Parser, states, directives |
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from docutils.parsers.rst.roles import register_canonical_role, set_classes |
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use xml_escape
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from logilab.mtconverter import ESC_UCAR_TABLE, ESC_CAR_TABLE, xml_escape |
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don't fail on unknown eid, simply issue a warning
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from cubicweb import UnknownEid |
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from cubicweb.ext.html4zope import Writer |
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# We provide our own parser as an attempt to get rid of |
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# state machine reinstanciation |
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import re |
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# compile states.Body patterns |
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for k, v in states.Body.patterns.items(): |
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if isinstance(v, str): |
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states.Body.patterns[k] = re.compile(v) |
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# register ReStructured Text mimetype / extensions |
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import mimetypes |
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mimetypes.add_type('text/rest', '.rest') |
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mimetypes.add_type('text/rest', '.rst') |
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LOGGER = getLogger('cubicweb.rest') |
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def eid_reference_role(role, rawtext, text, lineno, inliner, |
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options={}, content=[]): |
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try: |
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try: |
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eid_num, rest = text.split(u':', 1) |
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except: |
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eid_num, rest = text, '#'+text |
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eid_num = int(eid_num) |
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if eid_num < 0: |
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raise ValueError |
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except ValueError: |
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msg = inliner.reporter.error( |
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'EID number must be a positive number; "%s" is invalid.' |
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% text, line=lineno) |
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prb = inliner.problematic(rawtext, rawtext, msg) |
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return [prb], [msg] |
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# Base URL mainly used by inliner.pep_reference; so this is correct: |
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context = inliner.document.settings.context |
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try: |
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refedentity = context._cw.entity_from_eid(eid_num) |
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except UnknownEid: |
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ref = '#' |
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rest += u' ' + context._cw._('(UNEXISTANT EID)') |
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else: |
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ref = refedentity.absolute_url() |
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set_classes(options) |
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return [nodes.reference(rawtext, utils.unescape(rest), refuri=ref, |
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**options)], [] |
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def winclude_directive(name, arguments, options, content, lineno, |
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content_offset, block_text, state, state_machine): |
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"""Include a reST file as part of the content of this reST file. |
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same as standard include directive but using config.locate_doc_resource to |
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get actual file to include. |
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Most part of this implementation is copied from `include` directive defined |
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in `docutils.parsers.rst.directives.misc` |
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""" |
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context = state.document.settings.context |
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cw = context._cw |
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source = state_machine.input_lines.source( |
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lineno - state_machine.input_offset - 1) |
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#source_dir = os.path.dirname(os.path.abspath(source)) |
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fid = arguments[0] |
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for lang in chain((cw.lang, cw.vreg.property_value('ui.language')), |
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cw.vreg.config.available_languages()): |
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rid = '%s_%s.rst' % (fid, lang) |
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resourcedir = cw.vreg.config.locate_doc_file(rid) |
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if resourcedir: |
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break |
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else: |
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severe = state_machine.reporter.severe( |
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'Problems with "%s" directive path:\nno resource matching %s.' |
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% (name, fid), |
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nodes.literal_block(block_text, block_text), line=lineno) |
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return [severe] |
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path = join(resourcedir, rid) |
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encoding = options.get('encoding', state.document.settings.input_encoding) |
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try: |
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state.document.settings.record_dependencies.add(path) |
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include_file = io.FileInput( |
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source_path=path, encoding=encoding, |
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error_handler=state.document.settings.input_encoding_error_handler, |
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handle_io_errors=None) |
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except IOError, error: |
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severe = state_machine.reporter.severe( |
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'Problems with "%s" directive path:\n%s: %s.' |
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% (name, error.__class__.__name__, error), |
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nodes.literal_block(block_text, block_text), line=lineno) |
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return [severe] |
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try: |
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include_text = include_file.read() |
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except UnicodeError, error: |
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severe = state_machine.reporter.severe( |
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'Problem with "%s" directive:\n%s: %s' |
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% (name, error.__class__.__name__, error), |
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nodes.literal_block(block_text, block_text), line=lineno) |
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return [severe] |
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if options.has_key('literal'): |
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literal_block = nodes.literal_block(include_text, include_text, |
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source=path) |
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literal_block.line = 1 |
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return literal_block |
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else: |
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include_lines = statemachine.string2lines(include_text, |
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convert_whitespace=1) |
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state_machine.insert_input(include_lines, path) |
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return [] |
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winclude_directive.arguments = (1, 0, 1) |
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winclude_directive.options = {'literal': directives.flag, |
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'encoding': directives.encoding} |
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148 |
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996 | 149 |
try: |
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from pygments import highlight |
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kill dead/useless code as suggested by pylint
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parents:
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151 |
from pygments.lexers import get_lexer_by_name |
996 | 152 |
from pygments.formatters import HtmlFormatter |
153 |
except ImportError: |
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quick and dirty fix trying to avoid rest directive conflicts when using sphinx (which seems to import the code)
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pygments_directive = None |
996 | 155 |
else: |
156 |
_PYGMENTS_FORMATTER = HtmlFormatter() |
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157 |
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158 |
def pygments_directive(name, arguments, options, content, lineno, |
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content_offset, block_text, state, state_machine): |
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try: |
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lexer = get_lexer_by_name(arguments[0]) |
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except ValueError: |
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# no lexer found |
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lexer = get_lexer_by_name('text') |
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parsed = highlight(u'\n'.join(content), lexer, _PYGMENTS_FORMATTER) |
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# don't fail if no context set on the sourcecode directive |
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167 |
try: |
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168 |
context = state.document.settings.context |
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169 |
context._cw.add_css('pygments.css') |
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170 |
except AttributeError: |
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parents:
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171 |
# used outside cubicweb |
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172 |
pass |
996 | 173 |
return [nodes.raw('', parsed, format='html')] |
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174 |
|
996 | 175 |
pygments_directive.arguments = (1, 0, 1) |
176 |
pygments_directive.content = 1 |
|
177 |
||
178 |
||
0 | 179 |
class CubicWebReSTParser(Parser): |
180 |
"""The (customized) reStructuredText parser.""" |
|
181 |
||
182 |
def __init__(self): |
|
183 |
self.initial_state = 'Body' |
|
184 |
self.state_classes = states.state_classes |
|
185 |
self.inliner = states.Inliner() |
|
186 |
self.statemachine = states.RSTStateMachine( |
|
187 |
state_classes=self.state_classes, |
|
188 |
initial_state=self.initial_state, |
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189 |
debug=0) |
|
190 |
||
191 |
def parse(self, inputstring, document): |
|
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"""Parse `inputstring` and populate `document`, a document tree.""" |
|
193 |
self.setup_parse(inputstring, document) |
|
194 |
inputlines = statemachine.string2lines(inputstring, |
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195 |
convert_whitespace=1) |
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self.statemachine.run(inputlines, document, inliner=self.inliner) |
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self.finish_parse() |
|
198 |
||
199 |
||
4771
e27d23f875c6
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Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
4769
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changeset
|
200 |
# XXX docutils keep a ref on context, can't find a correct way to remove it |
e27d23f875c6
custom rest publisher instead of using rest_publish. Avoid to keep a ref on the latest context
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parents:
4769
diff
changeset
|
201 |
class CWReSTPublisher(Publisher): |
e27d23f875c6
custom rest publisher instead of using rest_publish. Avoid to keep a ref on the latest context
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parents:
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|
202 |
def __init__(self, context, settings, **kwargs): |
e27d23f875c6
custom rest publisher instead of using rest_publish. Avoid to keep a ref on the latest context
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parents:
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203 |
Publisher.__init__(self, **kwargs) |
e27d23f875c6
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parents:
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changeset
|
204 |
self.set_components('standalone', 'restructuredtext', 'pseudoxml') |
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parents:
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changeset
|
205 |
self.process_programmatic_settings(None, settings, None) |
e27d23f875c6
custom rest publisher instead of using rest_publish. Avoid to keep a ref on the latest context
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parents:
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|
206 |
self.settings.context = context |
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|
207 |
|
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custom rest publisher instead of using rest_publish. Avoid to keep a ref on the latest context
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parents:
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|
208 |
|
0 | 209 |
def rest_publish(context, data): |
210 |
"""publish a string formatted as ReStructured Text to HTML |
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|
211 |
|
0 | 212 |
:type context: a cubicweb application object |
213 |
||
214 |
:type data: str |
|
215 |
:param data: some ReST text |
|
216 |
||
217 |
:rtype: unicode |
|
218 |
:return: |
|
219 |
the data formatted as HTML or the original data if an error occured |
|
220 |
""" |
|
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[api] use _cw, cw_row, cw_col, cw_rset etc.
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
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diff
changeset
|
221 |
req = context._cw |
0 | 222 |
if isinstance(data, unicode): |
223 |
encoding = 'unicode' |
|
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parents:
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|
224 |
# remove unprintable characters unauthorized in xml |
f178182b1305
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parents:
1977
diff
changeset
|
225 |
data = data.translate(ESC_UCAR_TABLE) |
0 | 226 |
else: |
227 |
encoding = req.encoding |
|
2311
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actually close #344401 by removing unprintable characters
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|
228 |
# remove unprintable characters unauthorized in xml |
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|
229 |
data = data.translate(ESC_CAR_TABLE) |
0 | 230 |
settings = {'input_encoding': encoding, 'output_encoding': 'unicode', |
4771
e27d23f875c6
custom rest publisher instead of using rest_publish. Avoid to keep a ref on the latest context
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changeset
|
231 |
'warning_stream': StringIO(), |
0 | 232 |
# dunno what's the max, severe is 4, and we never want a crash |
233 |
# (though try/except may be a better option...) |
|
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|
234 |
'halt_level': 10, |
0 | 235 |
} |
236 |
if context: |
|
237 |
if hasattr(req, 'url'): |
|
238 |
base_url = req.url() |
|
239 |
elif hasattr(context, 'absolute_url'): |
|
240 |
base_url = context.absolute_url() |
|
241 |
else: |
|
242 |
base_url = req.base_url() |
|
243 |
else: |
|
244 |
base_url = None |
|
245 |
try: |
|
4771
e27d23f875c6
custom rest publisher instead of using rest_publish. Avoid to keep a ref on the latest context
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changeset
|
246 |
pub = CWReSTPublisher(context, settings, |
e27d23f875c6
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parents:
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changeset
|
247 |
parser=CubicWebReSTParser(), |
e27d23f875c6
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parents:
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changeset
|
248 |
writer=Writer(base_url=base_url), |
e27d23f875c6
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parents:
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changeset
|
249 |
source_class=io.StringInput, |
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changeset
|
250 |
destination_class=io.StringOutput) |
e27d23f875c6
custom rest publisher instead of using rest_publish. Avoid to keep a ref on the latest context
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4769
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changeset
|
251 |
pub.set_source(data) |
e27d23f875c6
custom rest publisher instead of using rest_publish. Avoid to keep a ref on the latest context
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parents:
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diff
changeset
|
252 |
pub.set_destination() |
e27d23f875c6
custom rest publisher instead of using rest_publish. Avoid to keep a ref on the latest context
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
4769
diff
changeset
|
253 |
res = pub.publish(enable_exit_status=None) |
e27d23f875c6
custom rest publisher instead of using rest_publish. Avoid to keep a ref on the latest context
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
4769
diff
changeset
|
254 |
# necessary for proper garbage collection, else a ref is kept somewhere in docutils... |
e27d23f875c6
custom rest publisher instead of using rest_publish. Avoid to keep a ref on the latest context
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
4769
diff
changeset
|
255 |
del pub.settings.context |
e27d23f875c6
custom rest publisher instead of using rest_publish. Avoid to keep a ref on the latest context
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
4769
diff
changeset
|
256 |
return res |
0 | 257 |
except Exception: |
258 |
LOGGER.exception('error while publishing ReST text') |
|
259 |
if not isinstance(data, unicode): |
|
260 |
data = unicode(data, encoding, 'replace') |
|
2312
af4d8f75c5db
use xml_escape
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2311
diff
changeset
|
261 |
return xml_escape(req._('error while publishing ReST text') |
0 | 262 |
+ '\n\n' + data) |
4118
8a9a00a9405c
quick and dirty fix trying to avoid rest directive conflicts when using sphinx (which seems to import the code)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2680
diff
changeset
|
263 |
|
8a9a00a9405c
quick and dirty fix trying to avoid rest directive conflicts when using sphinx (which seems to import the code)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2680
diff
changeset
|
264 |
|
8a9a00a9405c
quick and dirty fix trying to avoid rest directive conflicts when using sphinx (which seems to import the code)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2680
diff
changeset
|
265 |
_INITIALIZED = False |
8a9a00a9405c
quick and dirty fix trying to avoid rest directive conflicts when using sphinx (which seems to import the code)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2680
diff
changeset
|
266 |
def cw_rest_init(): |
8a9a00a9405c
quick and dirty fix trying to avoid rest directive conflicts when using sphinx (which seems to import the code)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2680
diff
changeset
|
267 |
global _INITIALIZED |
8a9a00a9405c
quick and dirty fix trying to avoid rest directive conflicts when using sphinx (which seems to import the code)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2680
diff
changeset
|
268 |
if _INITIALIZED: |
8a9a00a9405c
quick and dirty fix trying to avoid rest directive conflicts when using sphinx (which seems to import the code)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2680
diff
changeset
|
269 |
return |
8a9a00a9405c
quick and dirty fix trying to avoid rest directive conflicts when using sphinx (which seems to import the code)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2680
diff
changeset
|
270 |
_INITIALIZED = True |
8a9a00a9405c
quick and dirty fix trying to avoid rest directive conflicts when using sphinx (which seems to import the code)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2680
diff
changeset
|
271 |
register_canonical_role('eid', eid_reference_role) |
8a9a00a9405c
quick and dirty fix trying to avoid rest directive conflicts when using sphinx (which seems to import the code)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2680
diff
changeset
|
272 |
directives.register_directive('winclude', winclude_directive) |
8a9a00a9405c
quick and dirty fix trying to avoid rest directive conflicts when using sphinx (which seems to import the code)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2680
diff
changeset
|
273 |
if pygments_directive is not None: |
8a9a00a9405c
quick and dirty fix trying to avoid rest directive conflicts when using sphinx (which seems to import the code)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2680
diff
changeset
|
274 |
directives.register_directive('sourcecode', pygments_directive) |