Contents

module Sprinkle
  module Verifiers
    # = Environment Verifier
    #
    # Contains a verifier to check environment variables
    #
    # == Example Usage
    #
    #   verify { has_environment_variable "PATH" }
    #   verify { has_environment_variable "ProgramFiles", "C:\\Program Files" }
    #
    module Environment
      Sprinkle::Verify.register(Sprinkle::Verifiers::Environment)

      # Checks to make sure the <tt>environment variable</tt> exists or has a specific value 
      def has_environment_variable(name, value = nil)
        name, value = name.to_s, value.to_s
        if RUBY_PLATFORM =~ /win32/
          # use set | findstr to avoid shell substitution, which does not appear to work reliably with Kernel.system
          command = "set #{name} | findstr /c:\"#{name}=\""
          command << " | findstr /r /c:\"^.*=#{Regexp.quote value}$\"" unless value.empty?
          command << ' > NUL 2>&1' unless logger.debug?
        else
          command = value.nil? ? "test -n $#{name}" : "test $#{name} == \"#{value}\""
        end
        @commands << command
      end
      
      # Checks to make sure the <tt>environment variable</tt> contains the given text 
      def environment_variable_contains(name, text)
        name, text = name.to_s, text.to_s
        if RUBY_PLATFORM =~ /win32/
          # use set | findstr to avoid shell substitution, which does not appear to work reliably with Kernel.system
          command = "set #{name} | findstr /c:\"#{text}\""
          command << ' > NUL 2>&1' unless logger.debug?
        else
          command = "echo $#{name} | grep '#{text}'"
        end
        @commands << command
      end

    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
lachlan-sprinkle-0.0.15	lib/sprinkle/verifiers/environment.rb
lachlan-sprinkle-0.0.16	lib/sprinkle/verifiers/environment.rb