Merge pull request #46 from bmeurer/json-minify

Add support for JSON minification using json/minify.

README.md

@@ -2,7 +2,7 @@
 
 Requires Ruby 2.3+
 
-Minifies HTML, XML, CSS, and Javascript both inline and as separate files utilising yui-compressor and htmlcompressor.
+Minifies HTML, XML, CSS, JSON and JavaScript both inline and as separate files utilising yui-compressor and htmlcompressor.
 
 This was created due to the previous minifier (jekyll-press) not being CSS3 compatible, which made me frown.
 
@@ -37,6 +37,7 @@ and toggle features and settings using:
   remove_quotes: false              # Default: false
   compress_css: true                # Default: true
   compress_javascript: true         # Default: true
+  compress_json: true               # Default: true
   simple_doctype: false             # Default: false
   remove_script_attributes: false   # Default: false
   remove_style_attributes: false    # Default: false

jekyll-minifier.gemspec

@@ -30,6 +30,7 @@ Gem::Specification.new do |gem|
   gem.add_dependency "uglifier", "~> 4.1"
   gem.add_dependency "htmlcompressor", "~> 0.4"
   gem.add_dependency "cssminify2", "~> 2.0"
+  gem.add_dependency "json-minify", "~> 0.0.3"
 
   gem.add_development_dependency "rake", "~> 12.3"
   gem.add_development_dependency "rspec", "~> 3.8"

lib/jekyll-minifier.rb

@@ -1,6 +1,7 @@
 require 'uglifier'
 require 'htmlcompressor'
 require 'cssminify2'
+require 'json/minify'
 
 module Jekyll
   module Compressor
@@ -19,6 +20,8 @@ def output_compressed(path, context)
           else
             output_js(path, context)
           end
+        when '.json'
+          output_json(path, context)
         when '.css'
           if path.end_with?('.min.css')
             output_file(path, context)
@@ -105,6 +108,24 @@ def output_js(path, content)
       end
     end
 
+    def output_json(path, content)
+      if ( ENV['JEKYLL_ENV'] == "production" )
+        opts       = @site.config['jekyll-minifier']
+        compress = true
+        if ( !opts.nil? )
+          compress    = opts['compress_json']               if opts.has_key?('compress_json')
+        end
+
+        if ( compress )
+          output_file(path, JSON.minify(content))
+        else
+          output_file(path, content)
+        end
+      else
+        output_file(path, content)
+      end
+    end
+
     def output_css(path, content)
       if ( ENV['JEKYLL_ENV'] == "production" )
         opts       = @site.config['jekyll-minifier']
@@ -188,6 +209,8 @@ def write(dest)
             else
               output_js(dest_path, File.read(path))
             end
+          when '.json'
+            output_json(dest_path, File.read(path))
           when '.css'
             if dest_path.end_with?('.min.css')
               copy_file(path, dest_path)