wcs/wcs/scripts.py

66 lines
2.1 KiB
Python

# w.c.s. - web application for online forms
# Copyright (C) 2005-2016 Entr'ouvert
#
# This program 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 2 of the License, or
# (at your option) any later version.
#
# This program 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 this program; if not, see <http://www.gnu.org/licenses/>.
import ast
import os
from quixote import get_publisher
class Script:
ezt_call_mode = 'simple'
def __init__(self, script_name):
self.script_name = script_name + '.py'
paths = [
os.path.join(get_publisher().app_dir, 'scripts'),
os.path.join(get_publisher().APP_DIR, 'scripts'),
]
for path in paths:
script_path = os.path.join(path, script_name + '.py')
if os.path.exists(script_path):
self.__file__ = script_path
with open(script_path) as fd:
self.code = fd.read()
break
else:
raise ValueError()
@classmethod
def get_substitution_variables(cls):
return {'script': ScriptsSubstitutionProxy()}
@property
def __doc__(self):
return ast.get_docstring(ast.parse(self.code, self.script_name))
def __call__(self, *args):
data = get_publisher().substitutions.get_context_variables().copy()
data['args'] = args
data['__file__'] = self.__file__
code_object = compile(self.code, self.script_name, 'exec')
# noqa pylint: disable=eval-used
eval(code_object, data)
return data.get('result')
class ScriptsSubstitutionProxy:
def __getattr__(self, attr):
try:
return Script(attr)
except ValueError:
raise AttributeError()