57 lines
1.3 KiB
Ruby
57 lines
1.3 KiB
Ruby
##
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# The YAML module allows you to use one of the two YAML engines that ship with
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# ruby. By default Psych is used but the old and unmaintained Syck may be
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# chosen.
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begin
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require 'psych'
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rescue LoadError
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warn "#{caller[0]}:"
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warn "It seems your ruby installation is missing psych (for YAML output)."
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warn "To eliminate this warning, please install libyaml and reinstall your ruby."
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raise
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end
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module Psych
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class EngineManager
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# Returns the YAML engine in use.
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#
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# By default Psych is used but the old and unmaintained Syck may be chosen.
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#
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# See #yamler= for more information.
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attr_reader :yamler
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def initialize # :nodoc:
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@yamler = 'psych'
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end
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def syck? # :nodoc:
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false
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end
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# By default Psych is used but the old and unmaintained Syck may be chosen.
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#
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# After installing the 'syck' gem, you can set the YAML engine to syck:
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#
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# YAML::ENGINE.yamler = 'syck'
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#
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# To set the YAML engine back to psych:
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#
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# YAML::ENGINE.yamler = 'psych'
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def yamler= engine
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case engine
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when 'syck' then warn "syck has been removed"
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when 'psych' then @yamler = 'psych'
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else
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raise(ArgumentError, "bad engine")
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end
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engine
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end
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end
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ENGINE = EngineManager.new # :nodoc:
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end
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YAML = Psych
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