# -*- coding: utf-8 -*-
"""Slackware releases.
Use standard encoding, thus require enum value registration only.
Here a custom call is presented for demo purposes.
"""
from __future__ import absolute_import
from platformids import rte2num, num2rte, custom_dist, \
RTE_LINUX, RTE_OSTYPE, RTE_DIST, \
RTE, PlatformIDsUnknownError, \
custom_rte_distrel2tuple
__author__ = 'Arno-Can Uestuensoez'
__license__ = "Artistic-License-2.0 + Forced-Fairplay-Constraints"
__copyright__ = "Copyright (C) 2010-2018 Arno-Can Uestuensoez" \
" @Ingenieurbuero Arno-Can Uestuensoez"
__version__ = '0.1.1'
__uuid__ = "7add5ded-c39b-4b6e-8c87-1b3a1c150ee9"
RTE_SLACK = RTE_LINUX + custom_dist.add_enum() #: Scientific Linux
#: mapping of the rte string and numeric representation to the numeric value
rte2num.update(
{
'slackware': RTE_SLACK,
RTE_SLACK: RTE_SLACK,
}
)
#: mapping of the rte numeric representation to the string value
num2rte.update(
{
RTE_SLACK: 'slackware',
}
)
#-----------------------------------------------#
# #
# optional constants for convenience #
# #
#-----------------------------------------------#
RTE_SLACK14 = RTE_SLACK + 0x00003800 #: Slackware-14
RTE_SLACK140 = RTE_SLACK + 0x00003800 #: Slackware-14.0
RTE_SLACK141 = RTE_SLACK + 0x00003820 #: Slackware-14.1
RTE_SLACK142 = RTE_SLACK + 0x00003840 #: Slackware-14.2
#: mapping of the rte string and numeric representation to the numeric value
rte2num.update(
{
'slackware14': RTE_SLACK14,
'slackware140': RTE_SLACK140,
'slackware141': RTE_SLACK141,
'slackware142': RTE_SLACK142,
RTE_SLACK14: RTE_SLACK14,
RTE_SLACK140: RTE_SLACK140,
RTE_SLACK141: RTE_SLACK141,
RTE_SLACK142: RTE_SLACK142,
}
)
#: mapping of the rte numeric representation to the string value
num2rte.update(
{
RTE_SLACK14: 'slackware14',
RTE_SLACK140: 'slackware140',
RTE_SLACK141: 'slackware141',
RTE_SLACK142: 'slackware142',
}
)
[docs]def my_distrel2tuple(rte=RTE):
"""
A custom example only - standard encoding is default layout.
Convert the *Slackware* specific *distrel* version layout
to a tuple.
A callback to be used by the function:
platformids.decode_rte_distrel_to_segments(rte=RTE)
Decodes the compressed *distrel* from the 32bit integer
bitmask *rte* into the corresponding tuple of integer
segments.
Args:
rte:
The comppressed runtime environment identifier bitmask.
default := RTE
Returns:
Tuple of Integer values of the encoded segments, either
as defined by the default layout, or any known as defined
by additional extended and/or custom criteria.
Raises:
pass-through
Examples:
::
decode_rte_distrel_to_segments()
=> (14, 1, 0) # on Slackware-14.1
"""
if rte & RTE_OSTYPE != RTE_LINUX:
raise PlatformIDsUnknownError("Not Linux: rte = " + str(rte))
if rte & RTE_DIST != RTE_SLACK:
raise PlatformIDsUnknownError("Not Slackware: rte = " + str(rte))
try:
_rte = rte2num[rte]
except KeyError:
# non-registered release
if type(_rte) is int:
# can split basically any number, let's see...
_rte = rte
else:
raise PlatformIDsUnknownError("Unknown Slackware release rte = " + str(rte))
# here same as the default handler
return (
(_rte & 0xfc00) >> 10,
(_rte & 0x03e0) >> 5,
_rte & 0x001f,
)
#: registered callbacks for special handling of custom layout
custom_rte_distrel2tuple.update(
{
RTE_SLACK: my_distrel2tuple, #: the callback to be registered
}
)