52 lines
1.2 KiB
Ruby
52 lines
1.2 KiB
Ruby
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require 'stringio'
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module Net::BER::Extensions::String
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##
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# Converts a string to a BER string. Universal octet-strings are tagged
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# with 0x04, but other values are possible depending on the context, so we
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# let the caller give us one.
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#
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# User code should call either #to_ber_application_string or
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# #to_ber_contextspecific.
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def to_ber(code = 0x04)
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[code].pack('C') + length.to_ber_length_encoding + self
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end
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##
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# Creates an application-specific BER string encoded value with the
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# provided syntax code value.
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def to_ber_application_string(code)
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to_ber(0x40 + code)
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end
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##
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# Creates a context-specific BER string encoded value with the provided
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# syntax code value.
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def to_ber_contextspecific(code)
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to_ber(0x80 + code)
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end
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##
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# Nondestructively reads a BER object from this string.
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def read_ber(syntax = nil)
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StringIO.new(self).read_ber(syntax)
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end
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=begin
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# 20100319 AZ I've kept this here because I'm not yet sure if it's
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# necessary.
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##
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# Destructively reads a BER object from this string.
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def read_ber!(syntax = nil)
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obj, consumed = read_ber_from_string(self, syntax)
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if consumed
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self.slice!(0...consumed)
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obj
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else
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nil
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end
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end
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=end
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end
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