denis
139 lines
2.7 KiB
Python
139 lines
2.7 KiB
Python
'''
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Created on 20 avr. 2022
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@author: denis
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'''
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import json, yaml
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import importlib
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from datetime import datetime
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from decimal import Decimal
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import string, secrets
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import uuid, socket
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class TopicBase:
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topickeys = {}
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def __init__(self, topics):
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self.topics = topics.split('/') or []
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def get(self, k):
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try:
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return self.topics[self.topickeys.get(k)]
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except:
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pass
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return None
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@classmethod
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def arg(cls, topic, k):
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topics = topic.split('/') or []
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return topics[cls.get(k)]
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def yaml_load(f):
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with open(f, 'r') as stream:
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return yaml.safe_load(stream)
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return {}
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def yaml_save(f, context):
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with open(f, 'w') as stream:
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yaml.dump(context, stream, default_flow_style = False)
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def bitread(b, bitpos):
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return (b>>bitpos) & 0x1
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def get_fqdn():
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return socket.getfqdn()
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def get_uuid():
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return str(hex(uuid.getnode()))[2:]
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def ts_now(m=1):
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now = datetime.now().timestamp()*m
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return int(now)
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def random_num(n=16):
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alphabet = string.digits
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return ''.join(secrets.choice(alphabet) for i in range(n)) # @UnusedVariable
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def random_chars(n=6):
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alphabet = string.ascii_letters + string.digits
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return ''.join(secrets.choice(alphabet) for i in range(n)) # @UnusedVariable
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def get_apikey(n=32):
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chars = 'abcdefgh01234ijklABCD4567EFGHIJKLmnopqrstuvwxyz0123456789MNOPQRS789TUVWXYZ'
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return ''.join(secrets.choice(chars) for i in range(n)) # @UnusedVariable
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def str_to_float(n, default='NaN'):
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try:
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return float(str(n).strip().replace(',', '.'))
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except:
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return default
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def str_to_int(n, default='NaN'):
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try:
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return int(str(n).strip())
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except:
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return default
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def gps_conv(s, n=1000000, default='NaN'):
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try:
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return str( int(Decimal(s)*n) )
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except:
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return default
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def conv_gps(v, default=None):
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try:
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if v == 'NaN':
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raise
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return float(Decimal(v)/1000000)
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except:
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return default
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def js_serialize_array_to_dict(jsarray):
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d = {}
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for f in json.loads(jsarray):
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name = f.get('name')
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value = f.get('value')
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if name:
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d[name] = value
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return d
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def get_instance_class(module):
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modulename, classname = module.rsplit(".", 1)
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return getattr(importlib.import_module(modulename), classname)
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def gen_keywords(s):
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c = s.replace(',', ' ').replace('+', ' ')
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return [ w.strip() for w in c.split(' ') if w]
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def gen_device_uuid(n=19):
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return hex(int(random_num(n)))[2:]
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def get_device_uuid(n=19):
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return f'0x{gen_device_uuid(n)}'
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def dimensions(s):
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w, h = s.split('x')
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return int(w), int(h)
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def dim_to_size(w, h):
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return f'{w}x{h}'
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