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32 lines
472 B
Ruby
32 lines
472 B
Ruby
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# Env.rb -- imports environment variables as global variables
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#
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# Usage:
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#
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# require 'Env'
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# p $USER
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# $USER = "matz"
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# p ENV["USER"]
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for k,v in ENV
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next unless /^[a-zA-Z][_a-zA-Z0-9]*/ =~ k
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eval <<EOS
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$#{k} = %q!#{v}!
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trace_var "$#{k}", proc{|v|
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ENV[%q!#{k}!] = v;
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$#{k} = %q!#{v}!
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if v == nil
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untrace_var "$#{k}"
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end
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}
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EOS
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end
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if __FILE__ == $0
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p $TERM
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$TERM = nil
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p $TERM
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p ENV["TERM"]
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$TERM = "foo"
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p ENV["TERM"]
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end
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