25 lines
595 B
Ruby
25 lines
595 B
Ruby
module Hbc
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class Container
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class Criteria
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attr_reader :path, :command
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def initialize(path, command)
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@path = path
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@command = command
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end
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def extension(regex)
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path.extname.sub(/^\./, "") =~ Regexp.new(regex.source, regex.options | Regexp::IGNORECASE)
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end
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def magic_number(regex)
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return false if path.directory?
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# 262: length of the longest regex (currently: Hbc::Container::Tar)
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@magic_number ||= File.open(path, "rb") { |f| f.read(262) }
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@magic_number.match?(regex)
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end
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end
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end
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end
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