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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
bson.py
~~~~~~~
bson file format support
:copyright: (c) 2015 by Jauhien Piatlicki
:license: GPL-2, see LICENSE for more details.
"""
import bson
from g_sorcery.exceptions import FileJSONError
from g_sorcery.fileutils import FileJSONData
from g_sorcery.serialization import from_raw_serializable, to_raw_serializable
class FileBSON(FileJSONData):
"""
Class for BSON files. Supports custom JSON serialization
provided by g_sorcery.serialization.
"""
def read_content(self):
"""
Read BSON file.
"""
content = {}
bcnt = None
with open(self.path, 'rb') as f:
bcnt = f.read()
if not bcnt:
raise FileJSONError('failed to read: ', self.path)
rawcnt = bson.BSON.decode(bcnt)
content = from_raw_serializable(rawcnt)
return content
def write_content(self, content):
"""
Write BSON file.
"""
rawcnt = to_raw_serializable(content)
bcnt = bson.BSON.encode(rawcnt)
with open(self.path, 'wb') as f:
f.write(bcnt)
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