8bf28477a3
Useful for selectively enabling or silencing stderr, for example.
popen_read("foo", err: :err)
22 lines
458 B
Ruby
22 lines
458 B
Ruby
module Utils
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def self.popen_read(*args, **options, &block)
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popen(args, "rb", options, &block)
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end
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def self.popen_write(*args, **options, &block)
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popen(args, "wb", options, &block)
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end
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def self.popen(args, mode, options = {})
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IO.popen("-", mode) do |pipe|
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if pipe
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return pipe.read unless block_given?
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yield pipe
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else
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options[:err] ||= :close
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exec(*args, options)
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end
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end
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end
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end
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