nafuma/nafuma/auxillary.py

137 lines
No EOL
3.5 KiB
Python

import json
import numpy as np
import os
import shutil
import time
from datetime import datetime
def update_options(options, required_options, default_options):
''' Takes a dictionary of options along with a list of required options and dictionary of default options, and sets all keyval-pairs of options that is not already defined to the default values'''
for option in required_options:
if option not in options.keys():
options[option] = default_options[option]
return options
def save_options(options, path, ignore=None):
''' Saves any options dictionary to a JSON-file in the specified path'''
options_copy = options.copy()
if ignore:
if not isinstance(ignore, list):
ignore = [ignore]
for i in ignore:
options_copy[i] = 'Removed'
if not os.path.isdir(os.path.dirname(path)):
if os.path.dirname(path):
os.makedirs(os.path.dirname(path))
with open(path, 'w') as f:
json.dump(options_copy, f, skipkeys=True, indent=4)
def load_options(path):
''' Loads JSON-file into a dictionary'''
with open(path, 'r') as f:
options = json.load(f)
return(options)
def swap_values(dict, key1, key2):
key1_val = dict[key1]
dict[key1] = dict[key2]
dict[key2] = key1_val
return dict
def ceil(a, roundto=1):
fac = 1/roundto
a = np.ceil(a*fac) / fac
return a
def floor(a, roundto=1):
fac = 1/roundto
a = np.floor(a*fac) / fac
return a
def write_log(message, options={}):
required_options = ['logfile']
default_options = {
'logfile': f'{datetime.now().strftime("%Y-%m-%d-%H-%M-%S.log")}'
}
options = update_options(options=options, required_options=required_options, default_options=default_options)
if not os.path.isdir(os.path.dirname(options['logfile'])):
os.makedirs(os.path.dirname(options['logfile']))
now = datetime.now().strftime('%Y/%m/%d %H:%M:%S')
message = f'[{now}] {message} \n'
with open(options['logfile'], 'a') as f:
f.write(message)
#Function that "collects" all the files in a folder, only accepting .dat-files from xanes-measurements
def get_filenames(path, ext, filter=''):
''' Collects all filenames from specified path with a specificed extension
Input:
path: path to find all filenames (relative or absolute)
ext: extension (including ".")'''
filenames = [os.path.join(path, filename) for filename in os.listdir(path) if os.path.isfile(os.path.join(path, filename)) and filename.endswith(ext) and filter in filename]
return filenames
def move_list_element_last(filenames,string):
for i,file in enumerate(filenames):
if string in file:
del filenames[i]
filenames.append(file)
return filenames
def backup_file(filename, backup_dir):
# Creates backup-folder if it does not exist
if not os.path.isdir(backup_dir):
os.makedirs(backup_dir)
# Get a list of all previous backup files with the same basename as well as the creation time for the
prev_backup_files = [file for file in os.listdir(backup_dir) if os.path.basename(filename.split('.')[0]) in file]
creation_time = datetime.strptime(time.ctime(os.path.getmtime(filename)), '%a %b %d %H:%M:%S %Y').strftime("%Y-%m-%d_%H-%M-%S")
ext = '.' + filename.split('.')[-1]
dst_basename = creation_time + '_' + filename.split('.')[0] + '_' + f'{len(prev_backup_files)}'.zfill(4) + ext
dst = os.path.join(backup_dir, dst_basename)
shutil.copy(filename, dst)