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module Whenever
module Output
class Redirection
def initialize(output)
@output = output
end
def to_s
return '' unless defined?(@output)
case @output
when String then redirect_from_string
when Hash then redirect_from_hash
when NilClass then ">> /dev/null 2>&1"
when Proc then @output.call
else ''
end
end
protected
def stdout
return unless @output.has_key?(:standard)
@output[:standard].nil? ? '/dev/null' : @output[:standard]
end
def stderr
return unless @output.has_key?(:error)
@output[:error].nil? ? '/dev/null' : @output[:error]
end
def redirect_from_hash
case
when stdout == '/dev/null' && stderr == '/dev/null'
"> /dev/null 2>&1"
when stdout && stderr == '/dev/null'
">> #{stdout} 2> /dev/null"
when stdout && stderr
">> #{stdout} 2>> #{stderr}"
when stderr == '/dev/null'
"2> /dev/null"
when stderr
"2>> #{stderr}"
when stdout == '/dev/null'
"> /dev/null"
when stdout
">> #{stdout}"
else
''
end
end
def redirect_from_string
">> #{@output} 2>&1"
end
end
end
end
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