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#!/usr/bin/env python
# (c) 2012, Jan-Piet Mens <jpmens () gmail.com>
#
# This file is part of Ansible
#
# Ansible 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, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible 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 Ansible. If not, see <http://www.gnu.org/licenses/>.
#
import os
import sys
import ast
import yaml
import traceback
from ansible.plugins import fragment_loader
# modules that are ok that they do not have documentation strings
BLACKLIST_MODULES = [
'async_wrapper', 'accelerate', 'async_status'
]
def get_docstring(filename, verbose=False):
"""
Search for assignment of the DOCUMENTATION and EXAMPLES variables
in the given file.
Parse DOCUMENTATION from YAML and return the YAML doc or None
together with EXAMPLES, as plain text.
DOCUMENTATION can be extended using documentation fragments
loaded by the PluginLoader from the module_docs_fragments
directory.
"""
doc = None
plainexamples = None
returndocs = None
try:
# Thank you, Habbie, for this bit of code :-)
M = ast.parse(''.join(open(filename)))
for child in M.body:
if isinstance(child, ast.Assign):
if 'DOCUMENTATION' in (t.id for t in child.targets):
doc = yaml.safe_load(child.value.s)
fragment_slug = doc.get('extends_documentation_fragment',
'doesnotexist').lower()
# Allow the module to specify a var other than DOCUMENTATION
# to pull the fragment from, using dot notation as a separator
if '.' in fragment_slug:
fragment_name, fragment_var = fragment_slug.split('.', 1)
fragment_var = fragment_var.upper()
else:
fragment_name, fragment_var = fragment_slug, 'DOCUMENTATION'
if fragment_slug != 'doesnotexist':
fragment_class = fragment_loader.get(fragment_name)
assert fragment_class is not None
fragment_yaml = getattr(fragment_class, fragment_var, '{}')
fragment = yaml.safe_load(fragment_yaml)
if fragment.has_key('notes'):
notes = fragment.pop('notes')
if notes:
if not doc.has_key('notes'):
doc['notes'] = []
doc['notes'].extend(notes)
if 'options' not in fragment.keys():
raise Exception("missing options in fragment, possibly misformatted?")
for key, value in fragment.items():
if not doc.has_key(key):
doc[key] = value
else:
doc[key].update(value)
if 'EXAMPLES' in (t.id for t in child.targets):
plainexamples = child.value.s[1:] # Skip first empty line
if 'RETURN' in (t.id for t in child.targets):
returndocs = child.value.s[1:]
except:
traceback.print_exc() # temp
if verbose == True:
traceback.print_exc()
print "unable to parse %s" % filename
return doc, plainexamples, returndocs
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