121 lines
3.7 KiB
Python
121 lines
3.7 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import inspect
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from docutils import nodes
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from docutils.parsers import rst
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from docutils.parsers.rst import directives
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from docutils.statemachine import ViewList
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from sphinx.util import logging
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from sphinx.util.nodes import nested_parse_with_titles
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from stevedore import extension
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LOG = logging.getLogger(__name__)
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def _get_docstring(plugin):
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return inspect.getdoc(plugin) or ''
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def _simple_list(mgr):
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for name in sorted(mgr.names()):
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ext = mgr[name]
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doc = _get_docstring(ext.plugin) or '\n'
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summary = doc.splitlines()[0].strip()
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yield('* %s -- %s' % (ext.name, summary),
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ext.module_name)
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def _detailed_list(mgr, over='', under='-', titlecase=False):
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for name in sorted(mgr.names()):
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ext = mgr[name]
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if over:
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yield (over * len(ext.name), ext.module_name)
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if titlecase:
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yield (ext.name.title(), ext.module_name)
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else:
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yield (ext.name, ext.module_name)
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if under:
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yield (under * len(ext.name), ext.module_name)
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yield ('\n', ext.module_name)
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doc = _get_docstring(ext.plugin)
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if doc:
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yield (doc, ext.module_name)
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else:
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yield (
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'.. warning:: No documentation found for {} in {}'.format(
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ext.name, ext.entry_point_target,
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),
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ext.module_name,
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)
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yield ('\n', ext.module_name)
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class ListPluginsDirective(rst.Directive):
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"""Present a simple list of the plugins in a namespace."""
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option_spec = {
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'class': directives.class_option,
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'detailed': directives.flag,
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'titlecase': directives.flag,
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'overline-style': directives.single_char_or_unicode,
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'underline-style': directives.single_char_or_unicode,
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}
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has_content = True
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def run(self):
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namespace = ' '.join(self.content).strip()
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LOG.info('documenting plugins from %r' % namespace)
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overline_style = self.options.get('overline-style', '')
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underline_style = self.options.get('underline-style', '=')
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def report_load_failure(mgr, ep, err):
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LOG.warning(u'Failed to load %s: %s' % (ep.module, err))
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mgr = extension.ExtensionManager(
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namespace,
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on_load_failure_callback=report_load_failure,
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)
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result = ViewList()
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titlecase = 'titlecase' in self.options
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if 'detailed' in self.options:
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data = _detailed_list(
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mgr, over=overline_style, under=underline_style,
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titlecase=titlecase)
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else:
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data = _simple_list(mgr)
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for text, source in data:
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for line in text.splitlines():
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result.append(line, source)
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# Parse what we have into a new section.
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node = nodes.section()
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node.document = self.state.document
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nested_parse_with_titles(self.state, result, node)
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return node.children
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def setup(app):
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LOG.info('loading stevedore.sphinxext')
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app.add_directive('list-plugins', ListPluginsDirective)
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return {
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'parallel_read_safe': True,
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'parallel_write_safe': True,
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}
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