mirror of
https://github.com/morpheus65535/bazarr
synced 2024-12-27 01:57:33 +00:00
207 lines
9.2 KiB
Python
207 lines
9.2 KiB
Python
|
|
from gzip import GzipFile
|
|
from io import BytesIO
|
|
from json import loads as json_loads
|
|
from os import fsync
|
|
from sys import exc_info, version
|
|
from .utils import NoNumpyException # keep 'unused' imports
|
|
from .comment import strip_comment_line_with_symbol, strip_comments # keep 'unused' imports
|
|
from .encoders import TricksEncoder, json_date_time_encode, class_instance_encode, ClassInstanceEncoder, \
|
|
json_complex_encode, json_set_encode, numeric_types_encode, numpy_encode, nonumpy_encode, NoNumpyEncoder, \
|
|
nopandas_encode, pandas_encode # keep 'unused' imports
|
|
from .decoders import DuplicateJsonKeyException, TricksPairHook, json_date_time_hook, ClassInstanceHook, \
|
|
json_complex_hook, json_set_hook, numeric_types_hook, json_numpy_obj_hook, json_nonumpy_obj_hook, \
|
|
nopandas_hook, pandas_hook # keep 'unused' imports
|
|
from json import JSONEncoder
|
|
|
|
|
|
is_py3 = (version[:2] == '3.')
|
|
str_type = str if is_py3 else (basestring, unicode,)
|
|
ENCODING = 'UTF-8'
|
|
|
|
|
|
_cih_instance = ClassInstanceHook()
|
|
DEFAULT_ENCODERS = [json_date_time_encode, class_instance_encode, json_complex_encode, json_set_encode, numeric_types_encode,]
|
|
DEFAULT_HOOKS = [json_date_time_hook, _cih_instance, json_complex_hook, json_set_hook, numeric_types_hook,]
|
|
|
|
try:
|
|
import numpy
|
|
except ImportError:
|
|
DEFAULT_ENCODERS = [nonumpy_encode,] + DEFAULT_ENCODERS
|
|
DEFAULT_HOOKS = [json_nonumpy_obj_hook,] + DEFAULT_HOOKS
|
|
else:
|
|
# numpy encode needs to be before complex
|
|
DEFAULT_ENCODERS = [numpy_encode,] + DEFAULT_ENCODERS
|
|
DEFAULT_HOOKS = [json_numpy_obj_hook,] + DEFAULT_HOOKS
|
|
|
|
try:
|
|
import pandas
|
|
except ImportError:
|
|
DEFAULT_ENCODERS = [nopandas_encode,] + DEFAULT_ENCODERS
|
|
DEFAULT_HOOKS = [nopandas_hook,] + DEFAULT_HOOKS
|
|
else:
|
|
DEFAULT_ENCODERS = [pandas_encode,] + DEFAULT_ENCODERS
|
|
DEFAULT_HOOKS = [pandas_hook,] + DEFAULT_HOOKS
|
|
|
|
|
|
DEFAULT_NONP_ENCODERS = [nonumpy_encode,] + DEFAULT_ENCODERS # DEPRECATED
|
|
DEFAULT_NONP_HOOKS = [json_nonumpy_obj_hook,] + DEFAULT_HOOKS # DEPRECATED
|
|
|
|
|
|
def dumps(obj, sort_keys=None, cls=TricksEncoder, obj_encoders=DEFAULT_ENCODERS, extra_obj_encoders=(),
|
|
primitives=False, compression=None, allow_nan=False, conv_str_byte=False, **jsonkwargs):
|
|
"""
|
|
Convert a nested data structure to a json string.
|
|
|
|
:param obj: The Python object to convert.
|
|
:param sort_keys: Keep this False if you want order to be preserved.
|
|
:param cls: The json encoder class to use, defaults to NoNumpyEncoder which gives a warning for numpy arrays.
|
|
:param obj_encoders: Iterable of encoders to use to convert arbitrary objects into json-able promitives.
|
|
:param extra_obj_encoders: Like `obj_encoders` but on top of them: use this to add encoders without replacing defaults. Since v3.5 these happen before default encoders.
|
|
:param allow_nan: Allow NaN and Infinity values, which is a (useful) violation of the JSON standard (default False).
|
|
:param conv_str_byte: Try to automatically convert between strings and bytes (assuming utf-8) (default False).
|
|
:return: The string containing the json-encoded version of obj.
|
|
|
|
Other arguments are passed on to `cls`. Note that `sort_keys` should be false if you want to preserve order.
|
|
"""
|
|
if not hasattr(extra_obj_encoders, '__iter__'):
|
|
raise TypeError('`extra_obj_encoders` should be a tuple in `json_tricks.dump(s)`')
|
|
encoders = tuple(extra_obj_encoders) + tuple(obj_encoders)
|
|
txt = cls(sort_keys=sort_keys, obj_encoders=encoders, allow_nan=allow_nan,
|
|
primitives=primitives, **jsonkwargs).encode(obj)
|
|
if not is_py3 and isinstance(txt, str):
|
|
txt = unicode(txt, ENCODING)
|
|
if not compression:
|
|
return txt
|
|
if compression is True:
|
|
compression = 5
|
|
txt = txt.encode(ENCODING)
|
|
sh = BytesIO()
|
|
with GzipFile(mode='wb', fileobj=sh, compresslevel=compression) as zh:
|
|
zh.write(txt)
|
|
gzstring = sh.getvalue()
|
|
return gzstring
|
|
|
|
|
|
def dump(obj, fp, sort_keys=None, cls=TricksEncoder, obj_encoders=DEFAULT_ENCODERS, extra_obj_encoders=(),
|
|
primitives=False, compression=None, force_flush=False, allow_nan=False, conv_str_byte=False, **jsonkwargs):
|
|
"""
|
|
Convert a nested data structure to a json string.
|
|
|
|
:param fp: File handle or path to write to.
|
|
:param compression: The gzip compression level, or None for no compression.
|
|
:param force_flush: If True, flush the file handle used, when possibly also in the operating system (default False).
|
|
|
|
The other arguments are identical to `dumps`.
|
|
"""
|
|
txt = dumps(obj, sort_keys=sort_keys, cls=cls, obj_encoders=obj_encoders, extra_obj_encoders=extra_obj_encoders,
|
|
primitives=primitives, compression=compression, allow_nan=allow_nan, conv_str_byte=conv_str_byte, **jsonkwargs)
|
|
if isinstance(fp, str_type):
|
|
fh = open(fp, 'wb+')
|
|
else:
|
|
fh = fp
|
|
if conv_str_byte:
|
|
try:
|
|
fh.write(b'')
|
|
except TypeError:
|
|
pass
|
|
# if not isinstance(txt, str_type):
|
|
# # Cannot write bytes, so must be in text mode, but we didn't get a text
|
|
# if not compression:
|
|
# txt = txt.decode(ENCODING)
|
|
else:
|
|
try:
|
|
fh.write(u'')
|
|
except TypeError:
|
|
if isinstance(txt, str_type):
|
|
txt = txt.encode(ENCODING)
|
|
try:
|
|
if 'b' not in getattr(fh, 'mode', 'b?') and not isinstance(txt, str_type) and compression:
|
|
raise IOError('If compression is enabled, the file must be opened in binary mode.')
|
|
try:
|
|
fh.write(txt)
|
|
except TypeError as err:
|
|
err.args = (err.args[0] + '. A possible reason is that the file is not opened in binary mode; '
|
|
'be sure to set file mode to something like "wb".',)
|
|
raise
|
|
finally:
|
|
if force_flush:
|
|
fh.flush()
|
|
try:
|
|
if fh.fileno() is not None:
|
|
fsync(fh.fileno())
|
|
except (ValueError,):
|
|
pass
|
|
if isinstance(fp, str_type):
|
|
fh.close()
|
|
return txt
|
|
|
|
|
|
def loads(string, preserve_order=True, ignore_comments=True, decompression=None, obj_pairs_hooks=DEFAULT_HOOKS,
|
|
extra_obj_pairs_hooks=(), cls_lookup_map=None, allow_duplicates=True, conv_str_byte=False, **jsonkwargs):
|
|
"""
|
|
Convert a nested data structure to a json string.
|
|
|
|
:param string: The string containing a json encoded data structure.
|
|
:param decode_cls_instances: True to attempt to decode class instances (requires the environment to be similar the the encoding one).
|
|
:param preserve_order: Whether to preserve order by using OrderedDicts or not.
|
|
:param ignore_comments: Remove comments (starting with # or //).
|
|
:param decompression: True to use gzip decompression, False to use raw data, None to automatically determine (default). Assumes utf-8 encoding!
|
|
:param obj_pairs_hooks: A list of dictionary hooks to apply.
|
|
:param extra_obj_pairs_hooks: Like `obj_pairs_hooks` but on top of them: use this to add hooks without replacing defaults. Since v3.5 these happen before default hooks.
|
|
:param cls_lookup_map: If set to a dict, for example ``globals()``, then classes encoded from __main__ are looked up this dict.
|
|
:param allow_duplicates: If set to False, an error will be raised when loading a json-map that contains duplicate keys.
|
|
:param parse_float: A function to parse strings to integers (e.g. Decimal). There is also `parse_int`.
|
|
:param conv_str_byte: Try to automatically convert between strings and bytes (assuming utf-8) (default False).
|
|
:return: The string containing the json-encoded version of obj.
|
|
|
|
Other arguments are passed on to json_func.
|
|
"""
|
|
if not hasattr(extra_obj_pairs_hooks, '__iter__'):
|
|
raise TypeError('`extra_obj_pairs_hooks` should be a tuple in `json_tricks.load(s)`')
|
|
if decompression is None:
|
|
decompression = string[:2] == b'\x1f\x8b'
|
|
if decompression:
|
|
with GzipFile(fileobj=BytesIO(string), mode='rb') as zh:
|
|
string = zh.read()
|
|
string = string.decode(ENCODING)
|
|
if not isinstance(string, str_type):
|
|
if conv_str_byte:
|
|
string = string.decode(ENCODING)
|
|
else:
|
|
raise TypeError(('Cannot automatically encode object of type "{0:}" in `json_tricks.load(s)` since '
|
|
'the encoding is not known. You should instead encode the bytes to a string and pass that '
|
|
'string to `load(s)`, for example bytevar.encode("utf-8") if utf-8 is the encoding.').format(type(string)))
|
|
if ignore_comments:
|
|
string = strip_comments(string)
|
|
obj_pairs_hooks = tuple(obj_pairs_hooks)
|
|
_cih_instance.cls_lookup_map = cls_lookup_map or {}
|
|
hooks = tuple(extra_obj_pairs_hooks) + obj_pairs_hooks
|
|
hook = TricksPairHook(ordered=preserve_order, obj_pairs_hooks=hooks, allow_duplicates=allow_duplicates)
|
|
return json_loads(string, object_pairs_hook=hook, **jsonkwargs)
|
|
|
|
|
|
def load(fp, preserve_order=True, ignore_comments=True, decompression=None, obj_pairs_hooks=DEFAULT_HOOKS,
|
|
extra_obj_pairs_hooks=(), cls_lookup_map=None, allow_duplicates=True, conv_str_byte=False, **jsonkwargs):
|
|
"""
|
|
Convert a nested data structure to a json string.
|
|
|
|
:param fp: File handle or path to load from.
|
|
|
|
The other arguments are identical to loads.
|
|
"""
|
|
try:
|
|
if isinstance(fp, str_type):
|
|
with open(fp, 'rb') as fh:
|
|
string = fh.read()
|
|
else:
|
|
string = fp.read()
|
|
except UnicodeDecodeError as err:
|
|
# todo: not covered in tests, is it relevant?
|
|
raise Exception('There was a problem decoding the file content. A possible reason is that the file is not ' +
|
|
'opened in binary mode; be sure to set file mode to something like "rb".').with_traceback(exc_info()[2])
|
|
return loads(string, preserve_order=preserve_order, ignore_comments=ignore_comments, decompression=decompression,
|
|
obj_pairs_hooks=obj_pairs_hooks, extra_obj_pairs_hooks=extra_obj_pairs_hooks, cls_lookup_map=cls_lookup_map,
|
|
allow_duplicates=allow_duplicates, conv_str_byte=conv_str_byte, **jsonkwargs)
|
|
|
|
|