Merge commit 'a7c5c98bb80ae6b9d8091c0e6977193480a7120f' as 'utils_v2'

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2024-11-22 12:49:49 +05:30
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"""
AUTHOR:
Khushal P Soonderji
DATE:
Create: Saturday, 18th May, 2022
Update: Thursday, 22nd Aug. 2024
OBJECTIVE:
To provide an easy way to work with '.json' data and files.
REFERENCES:
1) https://www.w3schools.com/python/python_json.asp
DOWNLOADS:
N/A
"""
# *****************************************************************************************************************
# ***** ****
# *** IMPORT ***
# ***** ****
# *****************************************************************************************************************
# To make sibling directories accessible for imports:
import sys
sys.path.append(".")
sys.path.append("..")
# System-level activities:
import io
# To work with the JSON standard:
import json
# To work with files:
from utils_v2.system import files
# *****************************************************************************************************************
# ***** ****
# *** MACROS / ONE-TIME INIT ***
# ***** ****
# *****************************************************************************************************************
# --- Nothing Yet
# *****************************************************************************************************************
# ***** ****
# *** VARIABLES ***
# ***** ****
# *****************************************************************************************************************
# --- Nothing Yet
# *****************************************************************************************************************
# ***** ****
# *** FUNCTIONS ***
# ***** ****
# *****************************************************************************************************************
def from_string(json_data):
"""
Decodes a JSON string to a pythonic variable like a dict.
:param json_data: The JSON string to decode.
:return: The decoded pythonic variable.
"""
python_data = json.loads(json_data)
return python_data
# ---------------------------------------------------------------------------------------------------------------------
def to_string(
python_data,
indent = 4,
default = None,
separators = None,
no_space = False
):
"""
Converts the given pythonic data to a JSON string.
:param python_data: The input data like a dict.
:param indent: The tab-width for pretty presentation.
:param default: The function to use on something that cannot be directly parsed into a JSON string.
:param separators: Custom separators to use.
:param no_space: If you want a dense JSON string that saves memory by not using spaces or tabs or line-breaks. Not
good for human readability, very good for saving memory. WARNING: THIS OVERRIDES EVERY OTHER PARAMETER EXCEPT
'default'.
:return: The JSON string representation of the input pythonic data.
"""
if no_space:
json_data = json.dumps(
python_data,
default = default,
separators = (',', ':')
)
else:
json_data = json.dumps(
python_data,
indent = indent,
default = default,
separators = separators
)
return json_data
# ---------------------------------------------------------------------------------------------------------------------
def from_file(file):
"""
Reads a JSON file and returns it as a pythonic variable like a dict.
:param file: The path to the file on the disk or a file held in RAM as a BytesIO object.
:return: The decoded pythonic variable.
"""
if isinstance(file, io.BytesIO):
file.seek(0)
json_data = file.getvalue()
else: json_data = files.read_file(file)
python_data = from_string(json_data)
return python_data
# ---------------------------------------------------------------------------------------------------------------------
def to_file(
file,
python_data,
indent = 4,
default = None,
separators = None,
no_space = False
):
"""
:param file: Either a path to a file on disk, or a buffer in RAM in the form of a BytesIO object.
:param python_data: The pythonic data to be converted to the JSON string.
:param indent: The tab-width for pretty presentation.
:param default: The function to use on something that cannot be directly parsed into a JSON string.
:param separators: Custom separators to use.
:param no_space: If you want a dense JSON string that saves memory by not using spaces or tabs or line-breaks. Not
good for human readability, very good for saving memory. WARNING: THIS OVERRIDES EVERY OTHER PARAMETER EXCEPT
'default'.
:return: True/False if a path was given, else the same BytesIO object with the written JSON data.
"""
json_data = to_string(
python_data,
indent = indent,
default = default,
separators = separators,
no_space = no_space
)
if isinstance(file, io.BytesIO):
file.write(json_data.encode("utf-8"))
file.seek(0)
return file
else:
try:
files.write_file(file, json_data, mode = "w")
return True
except: return False
# *****************************************************************************************************************
# ***** ****
# *** MAIN PROGRAM ***
# ***** ****
# *****************************************************************************************************************
if __name__ == "__main__":
pass