utils/confutil.py
2021-06-24 19:00:59 +03:00

136 lines
4.6 KiB
Python

from argparse import ArgumentParser
from os import path, sep
class Parse:
"""
Parser of configs, arguments, parameters
"""
def __init__(self, parameters, block: str = None):
"""
Object constructor
:param parameters: dictionary as "key":"value" or
ArgumentParser class object or
string path to the file or
string as "var1=val1;var2=val2"
:param block: string name of target block from text
"""
self.data = {}
if type(parameters) is dict:
self._dict2dict(parameters)
if type(parameters) is ArgumentParser:
self._dict2dict(self.argv2dict(parameters))
if type(parameters) is str:
if path.exists(parameters):
self._dict2dict(self.strs2dict(self.conf2strs(parameters), block))
else:
self._dict2dict(self.strs2dict(parameters, block))
def __str__(self):
"""
Overrides method for print(object)
:return: string with contents of the object's dictionary
"""
string = ''
for key, val in self.data.items():
string += str(type(val)) + ' ' + str(key) + ' = ' + str(val) + '\n'
return string
def _dict2dict(self, dictionary: dict):
"""
Updates or adds dictionary data
:param dictionary: dictionary as "key":"value"
:return: None
"""
self.data.update(dictionary)
def expand(self, store: str = None):
"""
Expand dictionary "key":"name.conf" to dictionary "key":{subkey: subval}
:param store: string path to directory with name.conf
:return: expanded dictionary as "key":{subkey: subval}
"""
for key in self.data:
if store:
config = store + sep + self.data[key]
else:
config = self.data[key]
with open(config) as file:
self.data[key] = Parse(file.read()).data
return self.data
@classmethod
def argv2dict(cls, parser: ArgumentParser):
"""
Converts startup arguments to a dictionary
:param parser: argparse.ArgumentParser class object
:return: dictionary as "key":"value"
"""
parser = ArgumentParser(add_help=False, parents=[parser])
return vars(parser.parse_args())
@classmethod
def conf2strs(cls, config: str):
"""
Builds a dictionary from a file containing parameters
:param config: string path to the file
:return: string as "var1=val1;\nvar2=val2;"
"""
with open(config) as file:
raw = file.read()
strs = ''
for line in raw.splitlines():
if not line.lstrip().startswith('#'):
strs += line + '\n'
return strs
@classmethod
def strs2dict(cls, strings: str, blockname: str):
"""
Builds a dictionary from a strings containing parameters
:param strings: string as "var1=val1;var2=val2;"
:param blockname: string name of target block from text
:return: dictionary as "key":"value"
"""
dictionary = {}
if blockname:
strings = cls.block(blockname, strings)
for line in strings.replace('\n', ';').split(';'):
if not line.lstrip().startswith('#') and "=" in line:
dictionary[line.split('=')[0].strip()] = line.split('=')[1].strip().split(';')[0].strip()
return dictionary
@classmethod
def str2bool(cls, value: str):
"""
Converts a string value to boolean
:param value: string containing "true" or "false", "yes" or "no", "1" or "0"
:return: bool True or False
"""
return str(value).lower() in ("true", "yes", "1")
@classmethod
def block(cls, blockname: str, text: str):
"""
Cuts a block of text between line [blockname] and line [next block] or EOF
:param blockname: string in [] after which the block starts
:param text: string of text from which the block is needed
:return: string of text between line [block name] and line [next block]
"""
level = 1
save = False
result = ''
for line in text.splitlines():
if line.startswith('[') and blockname in line:
level = line.count('[')
save = True
elif line.startswith('[') and '['*level in line:
save = False
elif save:
result += line + '\n'
return result
if __name__ == "__main__":
pass