Add mobi format

Author: madeindjs

Gemfile

@@ -15,3 +15,5 @@ gem "concurrent-ruby", "~> 1.1"
 gem "rouge", "~> 3.3"
 
 gem "asciidoctor-epub3", "~> 1.5.alpha.8"
+
+gem "kindlegen", "~> 3.0"

Gemfile.lock

@@ -27,6 +27,9 @@ GEM
       nokogiri (~> 1.6.1)
       rubyzip (>= 1.1.1)
     hashery (2.1.2)
+    kindlegen (3.0.3)
+      rake
+      rubyzip
     mini_portile2 (2.1.0)
     nokogiri (1.6.8.1)
       mini_portile2 (~> 2.1.0)
@@ -52,6 +55,7 @@ GEM
       pdf-reader (~> 2.0)
       prawn (~> 2.2)
     public_suffix (3.0.3)
+    rake (12.3.2)
     rouge (3.3.0)
     ruby-rc4 (0.1.5)
     rubyzip (1.2.2)
@@ -69,6 +73,7 @@ DEPENDENCIES
   asciidoctor-epub3 (~> 1.5.alpha.8)
   asciidoctor-pdf (~> 1.5.alpha.16)
   concurrent-ruby (~> 1.1)
+  kindlegen (~> 3.0)
   rouge (~> 3.3)
 
 BUNDLED WITH

Rakefile

@@ -10,28 +10,40 @@ def parse_lang(args)
   lang
 end
 
+def out_filename(lang, extension)
+  "api_on_rails-#{lang}.#{extension}"
+end
+
 namespace :build do
   desc 'Build a PDF version'
   task :pdf, [:lang] do |_task, args|
-    `asciidoctor-pdf #{parse_lang(args)}/api_on_rails.adoc --destination-dir build`
-    puts 'Book build on build/api_on_rails.pdf'
+    lang = parse_lang(args)
+    filename = out_filename lang, 'pdf'
+    `asciidoctor-pdf #{lang}/api_on_rails.adoc --destination-dir build --out-file #{filename}`
+    puts "Book compiled on build/#{filename}"
   end
 
   desc 'Build an HTML version'
   task :html, [:lang] do |_task, args|
-    `asciidoctor #{parse_lang(args)}/api_on_rails.adoc --destination-dir build`
-    puts 'Book build on build/api_on_rails.html'
+    lang = parse_lang(args)
+    filename = out_filename lang, 'html'
+    `asciidoctor #{lang}/api_on_rails.adoc --destination-dir build --out-file #{filename}`
+    puts "Book compiled on build/#{filename}"
   end
 
   desc 'Build an EPUB version'
   task :epub, [:lang] do |_task, args|
-    `asciidoctor-epub3 #{parse_lang(args)}/api_on_rails.adoc --destination-dir build`
-    puts 'Book build on build/api_on_rails.epub'
+    lang = parse_lang(args)
+    filename = out_filename lang, 'epub'
+    `asciidoctor-epub3 #{lang}/api_on_rails.adoc --destination-dir build --out-file #{filename}`
+    puts "Book compiled on build/#{filename}"
   end
 
   desc 'Build a MOBI version'
   task :mobi, [:lang] do |_task, args|
-    `asciidoctor-epub3 #{parse_lang(args)}/api_on_rails.adoc --destination-dir build`
-    puts 'Book build on build/api_on_rails.mobi'
+    lang = parse_lang(args)
+    filename = out_filename lang, 'mobi'
+    `asciidoctor-epub3 #{lang}/api_on_rails.adoc --destination-dir build -a ebook-format=kf8 --out-file #{filename}`
+    puts "Book compiled on build/api_on_rails-#{lang}-kf8.epub"
   end
 end