From 012a7d24bea114f32d1426f83df875c800328b0f Mon Sep 17 00:00:00 2001
From: wagurano <wagurano@gmail.com>
Date: Sun, 22 Oct 2017 00:32:16 +0900
Subject: [PATCH] Add 'build:lang' task and Remove 'build:en' task

Add a task that builds only one of the languages(bg de en es fr id it ja ko pl pt ru tr vi zh_cn zh_tw)
---
 Rakefile | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/Rakefile b/Rakefile
index 216dd38e07..950f1d3ced 100644
--- a/Rakefile
+++ b/Rakefile
@@ -27,18 +27,29 @@ end
 
 namespace :build do
 
-  desc "Build the Jekyll site (`en' language part only)"
-  task :en do
+  def build_subpage(lang)
     require "yaml"
     require "lanyon"
 
     exclude_config = YAML.load_file(CONFIG)["exclude"]
-    exclude_langs  = (LANGUAGES - ["en"]).map {|lang| "#{lang}/" }
+    exclude_langs  = (LANGUAGES - [lang]).map {|x| "#{x}/" }
 
     exclude = exclude_config + exclude_langs
 
     Lanyon.build(exclude: exclude)
   end
+
+  desc "Build the Jekyll site (`lang' language part only)"
+  task :lang do
+    puts 'Please specify one of the valid language codes:'
+    puts LANGUAGES.join(', ') << '.'
+  end
+
+  LANGUAGES.each do |lang|
+    task lang.to_sym do
+      build_subpage(lang)
+    end
+  end
 end
 
 desc "Serve the Jekyll site locally"