NpmRequirement.is_installed() - Code Metrics - Inspection of "Manynewthings" - coala-analyzer/coala - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#2397)

by Zatreanu

created 2016-06-26 22:47 UTC

NpmRequirement.is_installed() A

↳ Parent: NpmRequirement

Complexity

Conditions

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	1
c	1
b	0
f	0
dl	0
loc	7
rs	9.4285

from coalib.bears.requirements.PackageRequirement import PackageRequirement
from coalib.misc.Shell import call_without_output


class NpmRequirement(PackageRequirement):
    """
    This class is a subclass of ``PackageRequirement``, and helps specifying
    requirements from ``npm``, without using the manager name.
    """

    def __init__(self, package, version=""):
        """
        Constructs a new ``NpmRequirement``, using the ``PackageRequirement``
        constructor.

        >>> pr = NpmRequirement('ramllint', '6.2')
        >>> pr.manager
        'npm'
        >>> pr.package
        'ramllint'
        >>> pr.version
        '6.2'

        :param package: A string with the name of the package to be installed.
        :param version: A version string. Leave empty to specify latest version.
        """
        PackageRequirement.__init__(self, 'npm', package, version)

    def install_command(self):
        """
        Creates the installation command for the instance of the class.

        >>> NpmRequirement('alex', '2').install_command()
        'npm install alex@2'

        :param return: A string with the installation command.
        """
        return "npm install {}@{}".format(self.package, self.version)

    def is_installed(self):
        """
        Checks if the dependency is installed.

        :param return: True if dependency is installed, false otherwise.
        """
        return not call_without_output(('npm', 'show', self.package),)


1			from coalib.bears.requirements.PackageRequirement import PackageRequirement
2			from coalib.misc.Shell import call_without_output
3
4
5			class NpmRequirement(PackageRequirement):
6			"""
7			This class is a subclass of ``PackageRequirement``, and helps specifying
8			requirements from ``npm``, without using the manager name.
9			"""
10
11			def __init__(self, package, version=""):
12			"""
13			Constructs a new ``NpmRequirement``, using the ``PackageRequirement``
14			constructor.
15
16			>>> pr = NpmRequirement('ramllint', '6.2')
17			>>> pr.manager
18			'npm'
19			>>> pr.package
20			'ramllint'
21			>>> pr.version
22			'6.2'
23
24			:param package: A string with the name of the package to be installed.
25			:param version: A version string. Leave empty to specify latest version.
26			"""
27			PackageRequirement.__init__(self, 'npm', package, version)
28
29			def install_command(self):
30			"""
31			Creates the installation command for the instance of the class.
32
33			>>> NpmRequirement('alex', '2').install_command()
34			'npm install alex@2'
35
36			:param return: A string with the installation command.
37			"""
38			return "npm install {}@{}".format(self.package, self.version)
39
40			def is_installed(self):
41			"""
42			Checks if the dependency is installed.
43
44			:param return: True if dependency is installed, false otherwise.
45			"""
46			return not call_without_output(('npm', 'show', self.package),)
47

coala-analyzer / coala

Pull Request — master (#2397)

NpmRequirement.is_installed() A

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