Simple render of a ruby MARC::Record with slim

marc_html.rb

# encoding: UTF-8

require 'slim'
require 'marc'


# Get a record somehow. Here, I just nab the marc-in-json from the HT catalog and use that.
require 'json'
require 'open-uri'
rec = MARC::Record.new_from_hash(JSON.parse(open('http://catalog.hathitrust.org/Record/100113248.json').read))

# Toggle between 'even' and 'odd' for striping of the lines
def neweo
  %w[even odd].enum_for(:cycle)
end

SPACECHAR = "\u23B5".freeze

t = Slim::Template.new { DATA.read }

puts t.render(Object.new, title: rec['245'].value, r: rec)



__END__

doctype 5
html
  head
  title = title
  meta charset="utf-8"
  css:
    .odd {background-color: #eee}
    li {padding: 0pt}
    ul.line {padding: 0.25em 0px 0px 0px; margin: 0em; height: auto;}
    ul.line li, ul.subs, ul.subs li, ul.kv, ul.kv li   { display: inline; font-family: courier;} 
    li.ind { margin-right: 0.75em; margin-left: 0.75em; font-family: courier;}
    ul.kv {padding-left: 0.2em;}
    ul.kv li.code {color: red; margin-left: 0.5em; } 
    ul.kv li.code:before { content: "\2021"; display: inline-block;}

  body
    h1 = r['245'].value
    - eo = neweo
    ul class=["line", eo.next]
      li.tag LDR
      li.ind = "  "
      li.value = r.leader.gsub(/\s/, SPACECHAR)
      
    - for field in r
      - if MARC::ControlField.control_tag?(field.tag)
        ul class=["line", eo.next]
          li.tag = field.tag
          li.ind = "  "
          li.value = field.value.gsub(/\s/, SPACECHAR)   
      - else
        ul class=["line", eo.next]
          li.tag = field.tag
          li.ind = "#{field.indicator1}#{field.indicator2}".gsub(/\s/, SPACECHAR)
          li.subs
            - for sf in field
              ul.kv
                li.code = sf.code
                li.value = sf.value