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""" The configuration from the user.
"""
from collections import OrderedDict
from os import path
import json
from zope import component
from interfaces.message import Error
class Mapping():
"""Represent the configuration. This class is provided as an utility and is
used in the IDesktop interfaces.
"""
def __init__(self, configuration):
self.set(configuration)
def set(self, configuration):
""" Associate the mapping defined in the dictionnary.
Only the lines pointing to a valid file or configuration will be
loaded.
"""
init_mapping = configuration["mapping"]
self.mapping = OrderedDict()
tmp_mapping = dict(init_mapping)
for key in tmp_mapping.keys() :
json_file = init_mapping[key]
if not path.exists(json_file):
component.handle(Error(f"The file '{json_file}' does not exists"))
continue
with open(json_file, "r") as file:
json_data = file.read()
try:
j = json.loads(json_data)
self.mapping[key] = j
except json.decoder.JSONDecodeError:
component.handle(Error(f"Json syntax error in '{json_file}'"))
def get(self, key, default):
""" This function return the mapping associated with the given key.
"""
return self.mapping.get(key, default)
def __getitem__(self, key):
return self.mapping.get(key, None)
def __setitem__(self, key, value):
self.mapping[key] = value
def items(self):
""" Implement the keys items from the dictionnary
"""
return self.mapping.items()
def keys(self):
""" Implement the keys method from the dictionnary
"""
return self.mapping.keys()
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