NpmRequirement.is_installed() - Code Metrics - Inspection of "PipRequirement: Add install_command and is_install..." - coala-analyzer/coala - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#2393)

by Zatreanu

created 2016-06-26 13:16 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	2
c	1
b	0
f	0
dl	0
loc	18
rs	9.4285

from coalib.bears.requirements.PackageRequirement import PackageRequirement
import shutil


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.

        >>> pr = NpmRequirement('alex', '2')
        >>> pr.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.

        >>> pr = NpmRequirement('npm')
        >>> pr.is_installed()
        True

        >>> pr = NpmRequirement('some_package')
        >>> pr.is_installed()
        False

        :param return: True if dependency is installed, false otherwise.
        """
        if shutil.which(self.package):
            return True
        else:
            return False


1			from coalib.bears.requirements.PackageRequirement import PackageRequirement
2			import shutil
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			>>> pr = NpmRequirement('alex', '2')
34			>>> pr.install_command()
35			'npm install alex@2'
36
37			:param return: A string with the installation command.
38			"""
39			return "npm install {}@{}".format(self.package, self.version)
40
41			def is_installed(self):
42			"""
43			Checks if the dependency is installed.
44
45			>>> pr = NpmRequirement('npm')
46			>>> pr.is_installed()
47			True
48
49			>>> pr = NpmRequirement('some_package')
50			>>> pr.is_installed()
51			False
52
53			:param return: True if dependency is installed, false otherwise.
54			"""
55			if shutil.which(self.package):
56			return True
57			else:
58			return False
59

coala-analyzer / coala

Pull Request — master (#2393)

NpmRequirement.is_installed() A

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