SystemHelper.vcr_version() - Code Metrics - Inspection of "Merge branch 'feature/libraries-windows-vc14' into..." - fuzeman/Plex-Trakt-Scrobbler - Measure and Improve Code Quality continuously with Scrutinizer

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Push — develop ( fc562f...b9b638 )

by Dean

created 2016-02-06 10:52 UTC

SystemHelper.vcr_version() A

↳ Parent: SystemHelper

Complexity

Conditions

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	1
CRAP Score	9.762

Metric	Value
cc	3
dl	0
loc	17
ccs	1
cts	11
cp	0.0909
crap	9.762
rs	9.4285

import logging
import os
import platform

log = logging.getLogger(__name__)

BITS_MAP = {
    '32bit': 'i386',
    '64bit': 'x86_64'
}

MACHINE_MAP = {
    ('32bit', 'i686'): 'i686'
}

MSVCR_MAP = {
    'msvcr120.dll': 'vc12',
    'msvcr130.dll': 'vc14'
}

NAME_MAP = {
    'Darwin': 'MacOSX'
}


class SystemHelper(object):
    @classmethod
    def architecture(cls):
        """Retrieve system architecture (i386, i686, x86_64)"""

        bits, _ = platform.architecture()
        machine = platform.machine()

        # Check for ARM machine
        if bits == '32bit' and machine.startswith('armv'):
            return cls.arm(machine)

        # Check (bits, machine) map
        machine_key = (bits, machine)

        if machine_key in MACHINE_MAP:
            return MACHINE_MAP[machine_key]

        # Check (bits) map
        if bits in BITS_MAP:
            return BITS_MAP[bits]

        log.info('Unable to determine system architecture - bits: %r, machine: %r', bits, machine)
        return None

    @classmethod
    def name(cls):
        """Retrieve system name (Windows, Linux, FreeBSD, MacOSX)"""

        system = platform.system()

        # Apply system map
        if system in NAME_MAP:
            system = NAME_MAP[system]

        return system

    @classmethod
    def arm(cls, machine):
        # Determine floating-point type
        float_type = cls.arm_float_type()

        if float_type is None:
            log.warn('Unable to use ARM libraries, unsupported floating-point type?')
            return None

        # Determine ARM version
        version = cls.arm_version()

        if version is None:
            log.warn('Unable to use ARM libraries, unsupported ARM version (%r)?' % machine)

            return None

        return '%s_%s' % (version, float_type)

    @classmethod
    def arm_version(cls, machine=None):
        # Read `machine` name if not provided
        if machine is None:
            machine = platform.machine()

        # Ensure `machine` is valid
        if not machine:
            return None

        # ARMv6
        if machine.startswith('armv6'):
            return 'armv6'

        # ARMv7
        if machine.startswith('armv7'):
            return 'armv7'

        return None

    @classmethod
    def arm_float_type(cls):
        if os.path.exists('/lib/arm-linux-gnueabihf'):
            return 'hf'

        if os.path.exists('/lib/arm-linux-gnueabi'):
            return 'sf'

        return None

    @classmethod
    def vcr_version(cls):
        try:
            import ctypes.util

            # Retrieve linked msvcr dll
            name = ctypes.util.find_msvcrt()

            # Return VC++ version from map
            if name not in MSVCR_MAP:
                log.error('Unknown VC++ runtime: %r', name)
                return None

            return MSVCR_MAP[name]
        except Exception:

            log.error('Unable to retrieve VC++ runtime version', exc_info=True)
            return None


1	1	import logging
2	1	import os
3	1	import platform
4
5	1	log = logging.getLogger(__name__)
6
7	1	BITS_MAP = {
8		'32bit': 'i386',
9		'64bit': 'x86_64'
10		}
11
12	1	MACHINE_MAP = {
13		('32bit', 'i686'): 'i686'
14		}
15
16	1	MSVCR_MAP = {
17		'msvcr120.dll': 'vc12',
18		'msvcr130.dll': 'vc14'
19		}
20
21	1	NAME_MAP = {
22		'Darwin': 'MacOSX'
23		}
24
25
26	1	class SystemHelper(object):
27	1	@classmethod
28		def architecture(cls):
29		"""Retrieve system architecture (i386, i686, x86_64)"""
30
31	1	bits, _ = platform.architecture()
32	1	machine = platform.machine()
33
34		# Check for ARM machine
35	1	if bits == '32bit' and machine.startswith('armv'):
36		return cls.arm(machine)
37
38		# Check (bits, machine) map
39	1	machine_key = (bits, machine)
40
41	1	if machine_key in MACHINE_MAP:
42		return MACHINE_MAP[machine_key]
43
44		# Check (bits) map
45	1	if bits in BITS_MAP:
46	1	return BITS_MAP[bits]
47
48		log.info('Unable to determine system architecture - bits: %r, machine: %r', bits, machine)
49		return None
50
51	1	@classmethod
52		def name(cls):
53		"""Retrieve system name (Windows, Linux, FreeBSD, MacOSX)"""
54
55	1	system = platform.system()
56
57		# Apply system map
58	1	if system in NAME_MAP:
59		system = NAME_MAP[system]
60
61	1	return system
62
63	1	@classmethod
64		def arm(cls, machine):
65		# Determine floating-point type
66		float_type = cls.arm_float_type()
67
68		if float_type is None:
69		log.warn('Unable to use ARM libraries, unsupported floating-point type?')
70		return None
71
72		# Determine ARM version
73		version = cls.arm_version()
74
75		if version is None:
76		log.warn('Unable to use ARM libraries, unsupported ARM version (%r)?' % machine)
		0 ignored issues – show Coding Style Best Practice introduced 2016-02-05 03:55 UTC by Report Bug Copy Issue Report Specify string format arguments as logging function parameters Loading history...
77		return None
78
79		return '%s_%s' % (version, float_type)
80
81	1	@classmethod
82	1	def arm_version(cls, machine=None):
83		# Read `machine` name if not provided
84		if machine is None:
85		machine = platform.machine()
86
87		# Ensure `machine` is valid
88		if not machine:
89		return None
90
91		# ARMv6
92		if machine.startswith('armv6'):
93		return 'armv6'
94
95		# ARMv7
96		if machine.startswith('armv7'):
97		return 'armv7'
98
99		return None
100
101	1	@classmethod
102		def arm_float_type(cls):
103		if os.path.exists('/lib/arm-linux-gnueabihf'):
104		return 'hf'
105
106		if os.path.exists('/lib/arm-linux-gnueabi'):
107		return 'sf'
108
109		return None
110
111	1	@classmethod
112		def vcr_version(cls):
113		try:
114		import ctypes.util
115
116		# Retrieve linked msvcr dll
117		name = ctypes.util.find_msvcrt()
118
119		# Return VC++ version from map
120		if name not in MSVCR_MAP:
121		log.error('Unknown VC++ runtime: %r', name)
122		return None
123
124		return MSVCR_MAP[name]
125		except Exception:
		0 ignored issues – show Best Practice introduced 2016-02-06 10:54 UTC by Report Bug Copy Issue Report Catching very general exceptions such as `Exception` is usually not recommended. Generally, you would want to handle very specific errors in the exception handler. This ensure that you do not hide other types of errors which should be fixed. So, unless you specifically plan to handle any error, consider adding a more specific exception. Loading history...
126		log.error('Unable to retrieve VC++ runtime version', exc_info=True)
127		return None
128

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