Sha256: 8b07da8b03174252befac99b22251452f19fb9c922e6b134defce853e4626f8d
Contents?: true
Size: 1.37 KB
Versions: 10
Compression:
Stored size: 1.37 KB
Contents
require 'rubygems/platform'
module Revealing
class Prerequisite
attr_reader :command
alias :to_s :command
def initialize(command, details = nil)
@command = command
case details
when NilClass
@package_info = same_as_command(command)
when String
@package_info = different_but_same_on_all_platforms(details)
when Hash
@package_info = different_for_each_platform(details)
when Proc
@package_info = callable(details)
else
raise "Don't know how to interpret '#{package_info.inspect}' as package info."
end
end
def available?
system("sh -c 'command -v #{command} > /dev/null'")
end
def install_hint
@package_info[Gem::Platform.local.os.to_sym]
end
private
def same_as_command(command)
{
darwin: "brew install #{command}",
linux: "apt install #{command}",
}
end
def different_but_same_on_all_platforms(details)
{
darwin: "brew install #{details}",
linux: "apt install #{details}",
}
end
def different_for_each_platform(details)
{
darwin: "brew install #{details[:darwin]}",
linux: "apt install #{details[:linux]}",
}
end
def callable(details)
{
darwin: details.call(:darwin),
linux: details.call(:linux),
}
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems