Add support for threaded/parallel generation of webp

jekyll-webp.gemspec

@@ -1,4 +1,5 @@
 # coding: utf-8
+require 'date'
 require_relative 'lib/jekyll-webp/version'
 
 Gem::Specification.new do |spec|
@@ -23,4 +24,5 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "bundler", "~> 1.5"
   spec.add_development_dependency "rake", "~> 1.5"
   spec.add_development_dependency "minitest", '~> 5.4', '>= 5.4.3'
+  spec.add_runtime_dependency "image_size", "~> 2.0"
 end

lib/jekyll-webp.rb

@@ -3,7 +3,12 @@
 require "jekyll-webp/webpExec"
 require "jekyll-webp/webpGenerator"
 
-module Jekyll 
+module Jekyll
   module Webp
   end # module Webp
-end # module Jekyll
+end # module Jekyll
+
+# Register the post-write hook
+Jekyll::Hooks.register :site, :post_write do |site|
+  Jekyll::Webp::WebpProcessor.new(site).process
+end

lib/jekyll-webp/defaults.rb

@@ -13,13 +13,7 @@ module Webp
       # https://developers.google.com/speed/webp/docs/cwebp#options
       'flags'     => "-m 4 -pass 4 -af",
 
-      # List of directories containing images to optimize, Nested directories only be checked if `nested` is true
-      'img_dir'   => ["/img"],
-
-      # Whether to search in nested directories or not
-      'nested'   => false,
-
-      # add ".gif" to the format list to generate webp for animated gifs as well
+      # File extensions of images to convert to WebP
       'formats'   => [".jpeg", ".jpg", ".png", ".tiff"],
 
       # append .webp to existing extension instead of replacing it
@@ -37,13 +31,16 @@ module Webp
       # Leave as nil to use the cmd line utilities shipped with the gem, override to use your local install
       'webp_path' => nil,
 
-      # List of files or directories to exclude
+      # List of files or directories to exclude from WebP generation
       # e.g. custom or hand generated webp conversion files
       'exclude'   => [],
 
-      # List of files or directories to explicitly include
-      # e.g. single files outside of the main image directories
-      'include'   => []
+      # Generate thumbnail versions with maximum dimension of 800px (height or width)
+      'thumbnails' => false,
+
+      # Number of threads to use for parallel generation.
+      # 0 or 1 means sequential (no parallelism).
+      'threads' => 0
     }
 
   end # module Webp

lib/jekyll-webp/version.rb

@@ -1,8 +1,8 @@
 module Jekyll
   module Webp
-    VERSION = "1.0.0"
+    VERSION = "1.0.1"
     # When modifying remember to issue a new tag command in git before committing, then push the new tag
-    # git tag -a v1.0.0 -m "Gem v1.0.0"
+    # git tag -a v1.0.1 -m "Gem v1.0.1"
     # git push origin --tags
   end #module Webp
 end #module Jekyll