# Copyright 2008-2015 Nokia Networks
# Copyright 2016- Robot Framework Foundation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
from robot.output import LOGGER
from robot.errors import FrameworkError, DataError
from robot.utils import normpath, seq2str, seq2str2
from .builder import ResourceFileBuilder
from .testlibraries import TestLibrary
RESOURCE_EXTENSIONS = {'.resource', '.robot', '.txt', '.tsv', '.rst', '.rest',
'.json', '.rsrc'}
[docs]
class Importer:
def __init__(self):
self._library_cache = ImportCache()
self._resource_cache = ImportCache()
[docs]
def reset(self):
self.__init__()
[docs]
def close_global_library_listeners(self):
for lib in self._library_cache.values():
lib.scope_manager.close_global_listeners()
[docs]
def import_library(self, name, args, alias, variables):
lib = TestLibrary.from_name(name, args=args, variables=variables,
create_keywords=False)
positional, named = lib.init.positional, lib.init.named
args_str = seq2str2(positional + [f'{n}={named[n]}' for n in named])
key = (name, positional, named)
if key in self._library_cache:
LOGGER.info(f"Found library '{name}' with arguments {args_str} "
f"from cache.")
lib = self._library_cache[key]
else:
lib.create_keywords()
if lib.scope is not lib.scope.GLOBAL:
lib.instance = None
self._library_cache[key] = lib
self._log_imported_library(name, args_str, lib)
if alias:
alias = variables.replace_scalar(alias)
lib = lib.copy(name=alias)
LOGGER.info(f"Imported library '{name}' with name '{alias}'.")
return lib
[docs]
def import_resource(self, path, lang=None):
self._validate_resource_extension(path)
if path in self._resource_cache:
LOGGER.info(f"Found resource file '{path}' from cache.")
else:
resource = ResourceFileBuilder(lang=lang).build(path)
self._resource_cache[path] = resource
return self._resource_cache[path]
def _validate_resource_extension(self, path):
extension = os.path.splitext(path)[1]
if extension.lower() not in RESOURCE_EXTENSIONS:
extensions = seq2str(sorted(RESOURCE_EXTENSIONS))
raise DataError(f"Invalid resource file extension '{extension}'. "
f"Supported extensions are {extensions}.")
def _log_imported_library(self, name, args_str, lib):
kind = type(lib).__name__.replace('Library', '').lower()
listener = ', with listener' if lib.listeners else ''
LOGGER.info(f"Imported library '{name}' with arguments {args_str} "
f"(version {lib.version or '<unknown>'}, {kind} type, "
f"{lib.scope.name} scope, {len(lib.keywords)} keywords{listener}).")
if not (lib.keywords or lib.listeners):
LOGGER.warn(f"Imported library '{name}' contains no keywords.")
[docs]
class ImportCache:
"""Keeps track on and optionally caches imported items.
Handles paths in keys case-insensitively on case-insensitive OSes.
Unlike dicts, this storage accepts mutable values in keys.
"""
def __init__(self):
self._keys = []
self._items = []
def __setitem__(self, key, item):
if not isinstance(key, (str, tuple)):
raise FrameworkError('Invalid key for ImportCache')
key = self._norm_path_key(key)
if key not in self._keys:
self._keys.append(key)
self._items.append(item)
else:
self._items[self._keys.index(key)] = item
[docs]
def add(self, key, item=None):
self.__setitem__(key, item)
def __getitem__(self, key):
key = self._norm_path_key(key)
if key not in self._keys:
raise KeyError
return self._items[self._keys.index(key)]
def __contains__(self, key):
return self._norm_path_key(key) in self._keys
[docs]
def values(self):
return self._items
def _norm_path_key(self, key):
if self._is_path(key):
return normpath(key, case_normalize=True)
if isinstance(key, tuple):
return tuple(self._norm_path_key(k) for k in key)
return key
def _is_path(self, key):
return isinstance(key, str) and os.path.isabs(key) and os.path.exists(key)