From 88792b1b2e22e7ce17c888b08ba06672c9a72013 Mon Sep 17 00:00:00 2001
From: Bian Jiaping <ssbianjp@gmail.com>
Date: Sun, 18 Dec 2016 23:13:50 +0800
Subject: Fix rake guides:generate:kindle error

---
 guides/rails_guides/kindle.rb | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

(limited to 'guides/rails_guides')

diff --git a/guides/rails_guides/kindle.rb b/guides/rails_guides/kindle.rb
index 4b73ae9518..5ac802c817 100644
--- a/guides/rails_guides/kindle.rb
+++ b/guides/rails_guides/kindle.rb
@@ -1,9 +1,6 @@
 #!/usr/bin/env ruby
 
-unless `which kindlerb`
-  abort "Please gem install kindlerb"
-end
-
+require 'kindlerb'
 require "nokogiri"
 require "fileutils"
 require "yaml"
@@ -28,10 +25,9 @@ module Kindle
       generate_document_metadata(mobi_outfile)
 
       puts "Creating MOBI document with kindlegen. This may take a while."
-      cmd = "kindlerb . > #{File.absolute_path logfile} 2>&1"
-      puts cmd
-      system(cmd)
-      puts "MOBI document generated at #{File.expand_path(mobi_outfile, output_dir)}"
+      if Kindlerb.run(output_dir)
+        puts "MOBI document generated at #{File.expand_path(mobi_outfile, output_dir)}"
+      end
     end
   end
 
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