68 lines
2 KiB
Python
68 lines
2 KiB
Python
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"""Helpers for LCN component."""
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import re
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import voluptuous as vol
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from homeassistant.const import CONF_NAME
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from .const import DEFAULT_NAME
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# Regex for address validation
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PATTERN_ADDRESS = re.compile('^((?P<conn_id>\\w+)\\.)?s?(?P<seg_id>\\d+)'
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'\\.(?P<type>m|g)?(?P<id>\\d+)$')
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def get_connection(connections, connection_id=None):
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"""Return the connection object from list."""
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if connection_id is None:
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connection = connections[0]
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else:
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for connection in connections:
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if connection.connection_id == connection_id:
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break
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else:
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raise ValueError('Unknown connection_id.')
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return connection
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def has_unique_connection_names(connections):
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"""Validate that all connection names are unique.
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Use 'pchk' as default connection_name (or add a numeric suffix if
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pchk' is already in use.
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"""
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for suffix, connection in enumerate(connections):
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connection_name = connection.get(CONF_NAME)
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if connection_name is None:
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if suffix == 0:
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connection[CONF_NAME] = DEFAULT_NAME
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else:
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connection[CONF_NAME] = '{}{:d}'.format(DEFAULT_NAME, suffix)
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schema = vol.Schema(vol.Unique())
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schema([connection.get(CONF_NAME) for connection in connections])
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return connections
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def is_address(value):
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"""Validate the given address string.
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Examples for S000M005 at myhome:
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myhome.s000.m005
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myhome.s0.m5
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myhome.0.5 ("m" is implicit if missing)
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Examples for s000g011
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myhome.0.g11
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myhome.s0.g11
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"""
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matcher = PATTERN_ADDRESS.match(value)
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if matcher:
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is_group = (matcher.group('type') == 'g')
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addr = (int(matcher.group('seg_id')),
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int(matcher.group('id')),
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is_group)
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conn_id = matcher.group('conn_id')
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return addr, conn_id
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raise vol.error.Invalid('Not a valid address string.')
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