LukasK13
3c55434c71
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195 lines
7.3 KiB
Python
195 lines
7.3 KiB
Python
from typing import Union
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import re
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import xml.etree.ElementTree as eT
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import astropy.units as u
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from ..lib.logger import logger
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import difflib
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import os
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class Entry(object):
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"""
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A class used to represent a configuration entry.
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Taken from ExoSim (https://github.com/ExoSim/ExoSimPublic)
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"""
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val: Union[str, bool, u.Quantity]
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def __init__(self, **kwargs):
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for key, value in kwargs.items():
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self.__setattr__(key, value)
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def __call__(self):
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return self.val if hasattr(self, "val") else None
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def parse(self, xml: eT.Element):
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"""
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Parse attributes of a XML element
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Parameters
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----------
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xml : xml.etree.ElementTree.Element
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XML element to parse the attributes from
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"""
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# Copy the XML attributes to object attributes
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for attrib in xml.attrib.keys():
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setattr(self, attrib, xml.attrib[attrib])
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# parse units
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attribs = list(xml.attrib.keys())
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units = list(filter(re.compile(".*_unit$").match, attribs))
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for unit in units:
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var = unit.replace("_unit", "")
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if hasattr(self, var):
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try:
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val = u.Quantity(list(map(float, getattr(self, var).split(','))), getattr(self, unit))
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if len(val) == 1:
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val = val[0]
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setattr(self, var, val)
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except (ValueError, LookupError):
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logger.error("unable to convert units in entry '" + xml.tag + "': " + getattr(self, var) + " " +
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getattr(self, unit), exit_=False)
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# Convert boolean values
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if hasattr(self, "val") and type(self.val) == str and self.val.lower() in ["false", "true"]:
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self.val = (self.val.lower() == "true")
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def check_quantity(self, name: str, unit: u.Unit, use_default: bool = True) -> Union[None, str]:
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"""
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Check a parameter as type quantity
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Parameters
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----------
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name : str
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The name of the parameter to be checked.
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unit : Quantity
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The default quantity to be used for conversion and equality checking.
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use_default : bool
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Use the given unit as default unit and try to convert strings to Quantities with this unit.
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Returns
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-------
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mes : Union[None, str]
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The error message of the check. This will be None if the check was successful.
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"""
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if not hasattr(self, name):
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return "Parameter '" + name + "' not found."
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attr = getattr(self, name)
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if type(attr) != u.Quantity:
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if unit == u.dimensionless_unscaled or use_default:
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try:
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self.__setattr__(name, float(attr) * unit)
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except ValueError:
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return "Expected parameter '" + name + "' with unit '" + unit.to_string() + \
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"' but got no unit and cannot convert '" + attr + "' to a numeric value."
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else:
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return "Expected parameter '" + name + "' with unit '" + unit.to_string() + "' but got no unit."
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if not attr.unit.is_equivalent(unit):
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if unit == u.K and attr.unit == u.Celsius:
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setattr(self, name, attr.to(unit, equivalencies=u.temperature()))
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setattr(self, name + '_unit', unit.to_string())
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elif unit.is_equivalent(u.m) and attr.unit.is_equivalent(u.Hz):
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setattr(self, name, attr.to(unit, equivalencies=u.spectral()))
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setattr(self, name + '_unit', unit.to_string())
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else:
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return "Expected parameter '" + name + "' with unit equivalent to '" + unit.to_string() + \
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"' but got unit '" + attr.unit.to_string() + "'."
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return None
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def check_selection(self, name: str, choices: list) -> Union[None, str]:
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"""
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Check a parameter against a list of possible choices. In case of a mismatch, a recommendation will be given.
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Parameters
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----------
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name : str
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The name of the parameter to be checked.
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choices : list
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List of choices to be used for checking.
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Returns
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-------
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mes : Union[None, str]
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The error message of the check. This will be None if the check was successful.
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"""
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if not hasattr(self, name):
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return "Parameter '" + name + "' not found."
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attr = getattr(self, name)
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if type(attr) != str:
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return "Expected parameter '" + name + "' to be of type string."
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if attr not in choices:
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match = difflib.get_close_matches(attr, choices, 1)
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if len(match) > 0:
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# noinspection PyTypeChecker
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return "Value '" + attr + "' not allowed for parameter '" + name + "'. Did you mean '" + \
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match[0] + "'?"
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else:
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return "Value '" + attr + "' not allowed for parameter '" + name + "'."
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return None
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def check_file(self, name) -> Union[None, str]:
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"""
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Check a parameter to be a valid path to a file.
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Parameters
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----------
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name : str
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The name of the parameter to be checked.
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Returns
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-------
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mes : Union[None, str]
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The error message of the check. This will be None if the check was successful.
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"""
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if not hasattr(self, name):
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return "Parameter '" + name + "' not found."
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if not os.path.isfile(getattr(self, name)):
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return "File '" + getattr(self, name) + "' does not exist."
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def check_path(self, name) -> Union[None, str]:
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"""
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Check a parameter to be a valid path to a file.
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Parameters
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----------
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name : str
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The name of the parameter to be checked.
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Returns
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-------
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mes : Union[None, str]
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The error message of the check. This will be None if the check was successful.
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"""
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if not hasattr(self, name):
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return "Parameter '" + name + "' not found."
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if not os.path.isdir(getattr(self, name)):
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return "Path '" + getattr(self, name) + "' does not exist."
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def check_float(self, name) -> Union[None, str]:
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"""
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Check a parameter to be a floating point value
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Parameters
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----------
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name : str
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The name of the parameter to be checked.
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Returns
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-------
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mes : Union[None, str]
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The error message of the check. This will be None if the check was successful.
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"""
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if not hasattr(self, name):
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return "Parameter '" + name + "' not found."
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attr = getattr(self, name)
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if type(attr) == float:
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return None
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elif type(attr) == u.Quantity:
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setattr(self, name, attr.value)
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elif type(attr) == str:
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try:
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setattr(self, name, float(attr))
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except ValueError:
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return "Cannot convert parameter '" + name + "' with value '" + attr + "' to a numeric value."
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elif type(attr) == int:
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setattr(self, name, float(attr))
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else:
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return "Expected parameter '" + name + "' to be numeric but got '" + type(attr) + "' instead."
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