= RelatonIetf

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_Formerly known as_ `rfcbib`.

RelatonIetf is a Ruby gem that search and fetch standards from the https://www.ietf.org[Internet Engineering Task Force (IETF)], including RFCs.

The standards scrape form https://www.rfc-editor.org/search/rfc_search.php

== Installation

Add this line to your application's Gemfile:

[source, ruby]
----
gem 'relaton-ietf'
----

And then execute:

    $ bundle

Or install it yourself as:

    $ gem install relaton-ietf

== Usage

=== Fetching documents

[source,ruby]
----
require 'relaton_ietf'

# Fetch RFC document
item = RelatonIetf::IetfBibliography.get 'IETF RFC 8341'
[relaton-ietf] ("IETF RFC 8341") fetching...
[relaton-ietf] ("IETF RFC 8341") found RFC 8341
=> #<RelatonIetf::IetfBibliographicItem:0x007fd1875e7f58
...

# Fetch Internet-Draft document
RelatonIetf::IetfBibliography.get 'IETF I-D.abarth-cake-02'
[relaton-ietf] ("IETF I-D.abarth-cake-02") fetching...
[relaton-ietf] ("IETF I-D.abarth-cake-02") found I-D.abarth-cake
=> #<RelatonIetf::IetfBibliographicItem:0x00007fa7c81688f8
...

# Return nil if document doesn't exist.
RelatonIetf::IetfBibliography.get 'IETF 1111'
[relaton-ietf] ("IETF 1111") fetching...
[relaton-ietf] ("IETF 1111") not found
=> nil
----

=== Serialization

[source,ruby]
----
item.to_xml
=>"<bibitem id="RFC8341">
  <fetched>2019-06-05</fetched>
  <title format="text/plain" language="en" script="Latn">Network Configuration Access Control Model</title>
  <uri type="src">https://www.rfc-editor.org/info/rfc8341</uri>
  <docidentifier type="IETF">RFC 8341</docidentifier>
  <docidentifier type=\"rfc-anchor\">RFC8341</docidentifier>
  <docidentifier type="DOI">10.17487/RFC8341</docidentifier>
  ....
</bibitem>"
----
With `bibdata: true` option XML output wrapped with `bibdata` element and `ext` element added.
[source,ruby]
----
item.to_xml bibdata: true
=>"<bibdata>
  <fetched>2019-06-05</fetched>
  <title format="text/plain" language="en" script="Latn">Network Configuration Access Control Model</title>
  <uri type="src">https://www.rfc-editor.org/info/rfc8341</uri>
  ...
  <ext>
    <doctype>rfc</doctype>
  </ext>
</bibdata>"
----

=== Typed links

IETF documents may have `src`, `xml`, and `doi` link type.

* `src` - web pulication
* `xml` - BibXML publication
* `doi` - DOI reference

[source,ruby]
----
item.link
=> [#<RelatonBib::TypedUri:0x00007fe8b287a120 @content=#<Addressable::URI:0x7e4 URI:https://raw.githubusercontent.com/relaton/relaton-data-ietf/master/data/reference.RFC.8341.xml>, @type="xml">,
 #<RelatonBib::TypedUri:0x00007fe8b2237ec0 @content=#<Addressable::URI:0x7f8 URI:https://www.rfc-editor.org/info/rfc8341>, @type="src">]
----

=== Parse a file locally

[source,ruby]
----
item = Relaton::Provider::Ietf.from_rfcxml File.read("spec/examples/rfc.xml")
=> #<RelatonIetf::IetfBibliographicItem:0x007fa8cda79ab8
...

item.to_xml bibdata: true
=>"<bibdata>
  <fetched>2020-09-15</fetched>
  <title format="text/plain" language="en" script="Latn">ACVP Secure Hash Algorithm (SHA) JSON Specification</title>
  ...
</bibdata>"
----

=== Create bibliographic item form YAML
[source,ruby]
----
hash = YAML.load_file 'spec/examples/ietf_bib_item.yml'
=> {"id"=>"RFC 8341",
...

RelatonIetf::IetfBibliographicItem.from_hash hash
=> #<RelatonIetf::IetfBibliographicItem:0x007f9a929dde40
...
----

== Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/metanorma/relaton-ietf.

== License

The gem is available as open source under the terms of the [MIT License](https://opensource.org/licenses/MIT).