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JSON, YAML, and python config file utilities
"""
from io import StringIO
import json
import os.path as path
import yaml
from ..misc.functional_utils import make_recursive_func
from .file_utils import f_join
__all__ = [
"json_load",
"json_loads",
"jsonl_load",
"yaml_load",
"yaml_loads",
"json_dump",
"json_dumps",
"jsonl_dump",
"yaml_dump",
"yaml_dumps",
"json_or_yaml_load",
"json_or_yaml_dump",
"Jsonl",
# ---------------- Aliases -----------------
"load_json",
"loads_json",
"load_jsonl",
"load_yaml",
"loads_yaml",
"dump_json",
"dumps_json",
"dump_jsonl",
"dump_yaml",
"dumps_yaml",
"load_json_or_yaml",
"dump_json_or_yaml",
]
from typing import Dict, List
from typing_extensions import Literal
def json_load(*file_path, **kwargs):
file_path = f_join(file_path)
with open(file_path, "r") as fp:
return json.load(fp, **kwargs)
def json_loads(string, **kwargs):
return json.loads(string, **kwargs)
def jsonl_load(*file_path, **kwargs):
file_path = f_join(file_path)
data = []
for line in open(file_path):
data.append(json.loads(line, **kwargs))
return data
@make_recursive_func
def any_to_primitive(x):
try:
import torch
except ImportError:
raise ImportError("torch is required for any_to_primitive")
import numpy as np
if isinstance(x, (np.ndarray, np.number, torch.Tensor)):
return x.tolist()
else:
return x
def json_dump(data, *file_path, convert_to_primitive=False, **kwargs):
if convert_to_primitive:
data = any_to_primitive(data)
file_path = f_join(file_path)
with open(file_path, "w") as fp:
json.dump(data, fp, **kwargs)
def json_dumps(data, convert_to_primitive=False, **kwargs):
"""
Returns: string
"""
if convert_to_primitive:
data = any_to_primitive(data)
return json.dumps(data, **kwargs)
def jsonl_dump(data, *file_path):
from .file_utils import is_sequence
assert is_sequence(data)
data = any_to_primitive(data)
file_path = f_join(file_path)
with open(file_path, "w") as fp:
for line in data:
print(json.dumps(line), file=fp, flush=True)
def yaml_load(*file_path, loader=yaml.safe_load, **kwargs):
file_path = f_join(file_path)
with open(file_path, "r") as fp:
return loader(fp, **kwargs)
def yaml_loads(string, *, loader=yaml.safe_load, **kwargs):
return loader(string, **kwargs)
def yaml_dump(data, *file_path, dumper=yaml.safe_dump, convert_to_primitive=False, **kwargs):
if convert_to_primitive:
data = any_to_primitive(data)
file_path = f_join(file_path)
indent = kwargs.pop("indent", 2)
default_flow_style = kwargs.pop("default_flow_style", False)
sort_keys = kwargs.pop("sort_keys", False) # preserves original dict order
with open(file_path, "w") as fp:
dumper(
data,
stream=fp,
indent=indent,
default_flow_style=default_flow_style,
sort_keys=sort_keys,
**kwargs,
)
def yaml_dumps(data, *, dumper=yaml.safe_dump, convert_to_primitive=False, **kwargs):
"Returns: string"
if convert_to_primitive:
data = any_to_primitive(data)
stream = StringIO()
indent = kwargs.pop("indent", 2)
default_flow_style = kwargs.pop("default_flow_style", False)
sort_keys = kwargs.pop("sort_keys", False) # preserves original dict order
dumper(
data,
stream,
indent=indent,
default_flow_style=default_flow_style,
sort_keys=sort_keys,
**kwargs,
)
return stream.getvalue()
# ==================== auto-recognize extension ====================
def json_or_yaml_load(*file_path, **loader_kwargs):
"""
Args:
file_path: JSON or YAML loader depends on the file extension
Raises:
IOError: if extension is not ".json", ".yml", or ".yaml"
"""
file_path = str(f_join(file_path))
if file_path.endswith(".json"):
return json_load(file_path, **loader_kwargs)
elif file_path.endswith(".yml") or file_path.endswith(".yaml"):
return yaml_load(file_path, **loader_kwargs)
else:
raise IOError(
f'unknown file extension: "{file_path}", '
f'loader supports only ".json", ".yml", ".yaml"'
)
def json_or_yaml_dump(data, *file_path, **dumper_kwargs):
"""
Args:
file_path: JSON or YAML loader depends on the file extension
Raises:
IOError: if extension is not ".json", ".yml", or ".yaml"
"""
file_path = str(f_join(file_path))
if file_path.endswith(".json"):
return json_dump(data, file_path, **dumper_kwargs)
elif file_path.endswith(".yml") or file_path.endswith(".yaml"):
return yaml_dump(data, file_path, **dumper_kwargs)
else:
raise IOError(
f'unknown file extension: "{file_path}", '
f'dumper supports only ".json", ".yml", ".yaml"'
)
# ---------------- Aliases -----------------
# add aliases where verb goes first, json_load -> load_json
load_json = json_load
load_yaml = yaml_load
load_jsonl = jsonl_load
loads_json = json_loads
loads_yaml = yaml_loads
dump_json = json_dump
dump_jsonl = jsonl_dump
dump_yaml = yaml_dump
dumps_json = json_dumps
dumps_yaml = yaml_dumps
load_json_or_yaml = json_or_yaml_load
dump_json_or_yaml = json_or_yaml_dump
# ==================== Jsonl ====================
class Jsonl:
"""
Both reader and writer, as if everything's in-memory
"""
def __init__(self, *file_path, mode: Literal["r", "w", "a"] = "a"):
"""
Args:
mode:
- 'r': file must already exists
- 'w': overwrite the file regardless of whether it exists or not
- 'a': create a new file if doesn't exist, or append to an existing file
"""
assert mode in "rwa"
self._file_path = str(f_join(file_path))
self._mode = mode
if mode == "r":
assert path.exists(self._file_path)
self._fp = None
else:
self._fp = open(self._file_path, mode)
if path.exists(self._file_path) and mode != "w":
self.data = jsonl_load(self._file_path)
else:
self.data = []
def append(self, data: Dict):
if self._mode == "r":
raise RuntimeError("Jsonl read mode cannot call append()")
self.data.append(data)
print(json_dumps(data), file=self._fp, flush=True)
def extend(self, data_list: List[Dict]):
for data in data_list:
self.append(data)
def close(self):
if self._fp is not None:
self._fp.close()
def __getitem__(self, idx):
return self.data[idx]
def __len__(self):
return len(self.data)
def __iter__(self):
return iter(self.data)
def __enter__(self):
return self
def __exit__(self, type, value, traceback):
self.close()
def __bool__(self):
return bool(self.data)
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