Module mangdl.utils.settings

Expand source code
import json
from os import path
from os.path import abspath as ap
from os.path import dirname as dn
from typing import Any, Dict

import toml
import yaml


def readcfg(file: str) -> Any:
    """Read the contents of a file with the given file name.

    Args:
        file (str): File name of the file to read the contents of.

    Returns:
        Any: The contents of the file.
    """
    with open(file, "r") as f:
        d = {
            "json": lambda f: json.load(f),
            "yaml": lambda f: yaml.safe_load(f.read()),
            "toml": lambda f: toml.load(f)
        }
        return d[file.split(".")[-1]](f)


def stg(stg: str, file: str = path.join(dn(ap(__file__)), "stg.json")) -> Any:
    """Retrieve dictionary value of the config file with the given file name
    using recursive indexing with a string.
    ex.:
        Given that settings.json contains: `{"data": {"attr": {"ch": 1}}}`
        `stg("data/attr/ch", "settings.json")` will return `1`

    Args:
        stg (str): Directory of the value to be retrieved.
        file (str, optional): File name of the file to get the value from. Defaults to `path.join(dn(ap(__file__)), "settings.json")`.

    Returns:
        Any: The retrieved value.
    """
    op = readcfg(file)
    if stg is not None:
        for a in stg.split("/"):
            op = op[a]
    return op


def wr_stg(stg: str, value: Any, file: str = path.join(dn(ap(__file__)), "stg.json")) -> None:
    """Rewrite dictionary value of the config file with the given file name
    using recursive indexing with a string.
    ex.:
        Given that settings.json contains: `{"data": {"attr": {"ch": 1}}}`
        `wr_stg("data/attr/ch", 2)`
        will rewrite settings.json to be: `{"data": {"attr": {"ch": 2}}}`

    Args:
        stg (str): Directory of the value to be rewrited.
        value (Any): Value to rewrite to.
        file (str, optional): File name of the file to rewrite the value from. Defaults to path.join(dn(ap(__file__)), "settings.json").

    Raises:
        FileNotFoundError: Raised if the file is not found.
    """
    stg_dict = readcfg(file)

    def modify(stg: str, value: Any, stg_dict: Dict[Any, Any]):
        path_ls = stg.split("/")
        key = path_ls[0]
        if len(path_ls) > 1:
            try:
                stg_dict[key]
            except KeyError:
                stg_dict[key] = {}
            if isinstance(stg_dict[key], dict):
                modify(stg.replace(f"{key}/", ""), value, stg_dict[key])
            else:
                f_stg = '"]["'.join(stg.split("/"))
                raise FileNotFoundError(f'["{f_stg}"] at {file} not found.')
        else:
            stg_dict[key] = value
            return stg_dict

    modify(stg, value, stg_dict)
    with open(path.join(dn(ap(__file__)), file), "w") as f:
        d = {
            "json": lambda f: json.dump(stg_dict, f, indent=4),
            "yaml": lambda f: yaml.dump(stg_dict, f, indent=4),
            "toml": lambda f: toml.dump(stg_dict, f)
        }
        d[file.split(".")[-1]](f)

Functions

def readcfg(file: str) ‑> Any

Read the contents of a file with the given file name.

Args

file : str
File name of the file to read the contents of.

Returns

Any
The contents of the file.
Expand source code
def readcfg(file: str) -> Any:
    """Read the contents of a file with the given file name.

    Args:
        file (str): File name of the file to read the contents of.

    Returns:
        Any: The contents of the file.
    """
    with open(file, "r") as f:
        d = {
            "json": lambda f: json.load(f),
            "yaml": lambda f: yaml.safe_load(f.read()),
            "toml": lambda f: toml.load(f)
        }
        return d[file.split(".")[-1]](f)
def stg(stg: str, file: str = '/home/whine/MangDL/MangDL/mangdl/utils/stg.json') ‑> Any

Retrieve dictionary value of the config file with the given file name using recursive indexing with a string. ex.: Given that settings.json contains: {"data": {"attr": {"ch": 1}}} stg("data/attr/ch", "settings.json") will return 1

Args

stg : str
Directory of the value to be retrieved.
file : str, optional
File name of the file to get the value from. Defaults to path.join(dn(ap(__file__)), "settings.json").

Returns

Any
The retrieved value.
Expand source code
def stg(stg: str, file: str = path.join(dn(ap(__file__)), "stg.json")) -> Any:
    """Retrieve dictionary value of the config file with the given file name
    using recursive indexing with a string.
    ex.:
        Given that settings.json contains: `{"data": {"attr": {"ch": 1}}}`
        `stg("data/attr/ch", "settings.json")` will return `1`

    Args:
        stg (str): Directory of the value to be retrieved.
        file (str, optional): File name of the file to get the value from. Defaults to `path.join(dn(ap(__file__)), "settings.json")`.

    Returns:
        Any: The retrieved value.
    """
    op = readcfg(file)
    if stg is not None:
        for a in stg.split("/"):
            op = op[a]
    return op
def wr_stg(stg: str, value: Any, file: str = '/home/whine/MangDL/MangDL/mangdl/utils/stg.json') ‑> None

Rewrite dictionary value of the config file with the given file name using recursive indexing with a string. ex.: Given that settings.json contains: {"data": {"attr": {"ch": 1}}} wr_stg("data/attr/ch", 2) will rewrite settings.json to be: {"data": {"attr": {"ch": 2}}}

Args

stg : str
Directory of the value to be rewrited.
value : Any
Value to rewrite to.
file : str, optional
File name of the file to rewrite the value from. Defaults to path.join(dn(ap(file)), "settings.json").

Raises

FileNotFoundError
Raised if the file is not found.
Expand source code
def wr_stg(stg: str, value: Any, file: str = path.join(dn(ap(__file__)), "stg.json")) -> None:
    """Rewrite dictionary value of the config file with the given file name
    using recursive indexing with a string.
    ex.:
        Given that settings.json contains: `{"data": {"attr": {"ch": 1}}}`
        `wr_stg("data/attr/ch", 2)`
        will rewrite settings.json to be: `{"data": {"attr": {"ch": 2}}}`

    Args:
        stg (str): Directory of the value to be rewrited.
        value (Any): Value to rewrite to.
        file (str, optional): File name of the file to rewrite the value from. Defaults to path.join(dn(ap(__file__)), "settings.json").

    Raises:
        FileNotFoundError: Raised if the file is not found.
    """
    stg_dict = readcfg(file)

    def modify(stg: str, value: Any, stg_dict: Dict[Any, Any]):
        path_ls = stg.split("/")
        key = path_ls[0]
        if len(path_ls) > 1:
            try:
                stg_dict[key]
            except KeyError:
                stg_dict[key] = {}
            if isinstance(stg_dict[key], dict):
                modify(stg.replace(f"{key}/", ""), value, stg_dict[key])
            else:
                f_stg = '"]["'.join(stg.split("/"))
                raise FileNotFoundError(f'["{f_stg}"] at {file} not found.')
        else:
            stg_dict[key] = value
            return stg_dict

    modify(stg, value, stg_dict)
    with open(path.join(dn(ap(__file__)), file), "w") as f:
        d = {
            "json": lambda f: json.dump(stg_dict, f, indent=4),
            "yaml": lambda f: yaml.dump(stg_dict, f, indent=4),
            "toml": lambda f: toml.dump(stg_dict, f)
        }
        d[file.split(".")[-1]](f)