Abnf

Example

iex(1)> parser = Abnf.load("priv/rfc5234.abnf")
Rfc5234
iex(2)> parser.parse(:rule, "DQUOTE = %x22\r\n")
[{:rule, "DQUOTE = %x22\r\n",
  [{:rulename, "DQUOTE",
    [{:ALPHA, "D", []}, {:ALPHA, "Q", []}, {:ALPHA, "U", []}, {:ALPHA, "O", []},
     {:ALPHA, "T", []}, {:ALPHA, "E", []}]},
   {:"defined-as", " = ",
    [{:"c-wsp", " ", [{:WSP, " ", [{:SP, " ", []}]}]}, {:literal, "=", []},
     {:"c-wsp", " ", [{:WSP, " ", [{:SP, " ", []}]}]}]},
   {:elements, "%x22",
    [{:alternation, "%x22",
      [{:concatenation, "%x22",
        [{:repetition, "%x22",
          [{:element, "%x22",
            [{:"num-val", "%x22",
              [{:literal, "%", []},
               {:"hex-val", "x22",
                [{:literal, "x", []}, {:HEXDIG, "2", [{:DIGIT, "2", []}]},
                 {:HEXDIG, "2", [{:DIGIT, "2", []}]}]}]}]}]}]}]}]},
   {:"c-nl", "\r\n", [{:CRLF, "\r\n", [{:CR, "\r", []}, {:LF, "\n", []}]}]}]}]

TODO

• Build minimal parser
• Build minimal generator
• Use self-hosted parser
• Parse rfc2822
• Improve test coverage
• Clean up generator
• Log error messages during parsing
• Improve UX of parsing for specific rules

Installation

If available in Hex, the package can be installed as:

1. Add abnf to your list of dependencies in mix.exs:

   def deps do

    [{:abnf, "~> 0.0.1"}]

   end

2. Ensure abnf is started before your application:

   def application do

    [applications: [:abnf]]

   end