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import shlex |
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from coalib.bears.requirements.PackageRequirement import PackageRequirement |
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from coalib.misc.Shell import call_without_output |
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from coala_utils.string_processing import escape |
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class JuliaRequirement(PackageRequirement): |
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""" |
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This class is a subclass of ``PackageRequirement``, and helps specifying |
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requirements from ``julia``, without using the manager name. |
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""" |
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def __init__(self, package, version=""): |
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""" |
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Constructs a new ``JuliaRequirement``, using the ``PackageRequirement`` |
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constructor. |
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>>> pr = JuliaRequirement('Lint', '19.2') |
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>>> pr.manager |
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'julia' |
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>>> pr.package |
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'Lint' |
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>>> pr.version |
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'19.2' |
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:param package: A string with the name of the package to be installed. |
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:param version: A version string. Leave empty to specify latest version. |
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""" |
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PackageRequirement.__init__(self, 'julia', package, version) |
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def install_command(self): |
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""" |
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Creates the installation command for the instance of the class. |
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>>> JuliaRequirement('Lint').install_command() |
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'julia -e \\'Pkg.add("Lint")\\'' |
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:return: A string with the installation command. |
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""" |
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code = 'Pkg.add("{}")'.format(escape(self.package, '\\')) |
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args = ('julia', '-e', shlex.quote(code)) |
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return ' '.join(args) |
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def is_installed(self): |
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""" |
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Checks if the dependency is installed. |
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:return: ``True`` if dependency is installed, ``False`` otherwise. |
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""" |
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# We need to check explicitly if `nothing` is returned, as this happens |
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# when the package is *registered*, but *not installed*. If it's not |
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# even registered, julia will throw an exception which lets julia exit |
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# with an error code different from 0. |
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code = 'Pkg.installed("{}")==nothing?exit(1):exit(0)'.format( |
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escape(self.package, '\\')) |
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args = ('julia', '-e', code) |
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return not call_without_output(args) |
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coala-analyzer /
coala
