Custom template for integrating book links

jekyll-assets/_templates/helpers.rb

@@ -0,0 +1,42 @@
+module Slim::Helpers
+  def book_link
+    case (self.attr 'booktype')
+    when 'free'
+      %(You can <a href="#{self.attr 'link'}" target="_blank">download this book</a> as a PDF file for free, it has been released under a Creative Commons <a href="https://creativecommons.org/licenses/by-nc-sa/3.0/" target="_blank">Attribution-NonCommercial-ShareAlike</a> 3.0 Unported (CC BY NC-SA) licence.)
+    when 'buy'
+      %(You can <a href="#{self.attr 'link'}" target="_blank">buy this book</a> on the Raspberry Pi Press site.)
+    when 'donate'
+      %(You can <a href="#{self.attr 'link'}" target="_blank">download this book</a> for an optional donation on the Raspberry Pi Press site.)
+    else
+      return
+    end
+  end
+
+  def book_image
+    src = (self.attr 'image').dup
+    src = src.gsub(/^image::/, "")
+    src = src.gsub(/\[.*?\]$/, "")
+    return src
+  end
+
+  def section_title
+    if caption
+      captioned_title
+    elsif numbered && level <= (document.attr :sectnumlevels, 3).to_i
+      if level < 2 && document.doctype == 'book'
+        case sectname
+        when 'chapter'
+          %(#{(signifier = document.attr 'chapter-signifier') ? signifier.to_s + ' ' : ''}#{sectnum} #{title})
+        when 'part'
+          %(#{(signifier = document.attr 'part-signifier') ? signifier.to_s + ' ' : ''}#{sectnum nil, ':'} #{title})
+        else
+          %(#{sectnum} #{title})
+        end
+      else
+        %(#{sectnum} #{title})
+      end
+    else
+      title
+    end
+  end
+end

jekyll-assets/_templates/section.html.slim

@@ -0,0 +1,50 @@
+- sect0 = level == 0
+- if sect0
+  *{tag: %(h#{level + 1}), id: id, class: ('sect0' if sect0)}
+    - if id && (document.attr? :sectanchors)
+      a.anchor href="##{id}"
+      =section_title
+    - elsif id && (document.attr? :sectlinks)
+      a.link href="##{id}" =section_title
+    - else
+      =section_title
+  =content
+- else
+  div class=[%(sect#{level}), role]
+    *{tag: %(h#{level + 1}), id: id, class: ('sect0' if sect0)}
+      - if id && (document.attr? :sectanchors)
+        a.anchor href="##{id}"
+        =section_title
+      - elsif id && (document.attr? :sectlinks)
+        a.link href="##{id}" =section_title
+      - else
+        =section_title
+    - if level == 1
+      .sectionbody 
+      - if role? 'booklink'
+        div class="openblock float-group"
+          div class="content"
+            - if attr 'image'
+              div class="imageblock related thumb right"
+                div class="content"
+                  a href=(attr 'link') target='_blank' class='image'
+                    img src=(book_image)
+            =content
+            div class="paragraph"
+              p =book_link
+      - else
+        =content
+    - else
+      - if role? 'booklink'
+        div class="openblock float-group"
+          div class="content"
+            - if attr 'image'
+              div class="imageblock related thumb right"
+                div class="content"
+                  a href=(attr 'link') target='_blank' class='image'
+                    img src=(book_image)
+            =content
+            div class="paragraph"
+              p =book_link
+      - else
+        =content