From 66507af3ecf498dd21c916943b5eb82c76d6d928 Mon Sep 17 00:00:00 2001
From: Jan De Poorter <jan@defv.be>
Date: Mon, 10 Feb 2014 15:20:00 +0100
Subject: [PATCH 1/3] Add a way to cache certain parts of a document

---
 lib/hypertemplate/builder.rb       |  1 +
 lib/hypertemplate/builder/base.rb  | 15 ++++++++-
 lib/hypertemplate/builder/cache.rb | 49 ++++++++++++++++++++++++++++++
 lib/hypertemplate/hook/rails.rb    |  6 ++++
 4 files changed, 70 insertions(+), 1 deletion(-)
 create mode 100644 lib/hypertemplate/builder/cache.rb

diff --git a/lib/hypertemplate/builder.rb b/lib/hypertemplate/builder.rb
index 46957f9..d9eb3bb 100644
--- a/lib/hypertemplate/builder.rb
+++ b/lib/hypertemplate/builder.rb
@@ -2,6 +2,7 @@ module Hypertemplate
   module Builder
     require "hypertemplate/builder/base"
     require "hypertemplate/builder/values"
+    require "hypertemplate/builder/cache"
     require "hypertemplate/builder/json"
     require "hypertemplate/builder/xml"
 
diff --git a/lib/hypertemplate/builder/base.rb b/lib/hypertemplate/builder/base.rb
index 8d27636..453e95b 100644
--- a/lib/hypertemplate/builder/base.rb
+++ b/lib/hypertemplate/builder/base.rb
@@ -6,7 +6,14 @@ class Base
       undef_method :id if respond_to?(:id)
 
       class << self
-        
+        def cache
+          @cache
+        end
+
+        def cache=(cache)
+          @cache = cache
+        end
+
         def media_types
           @media_types
         end
@@ -98,6 +105,12 @@ def ns(*args, &block)
         end
       end
 
+      def cache(key)
+        Cache.new(key, self) do |cache|
+          yield cache
+        end
+      end
+
       # writes a key and value pair to the representation
       # example:
       #
diff --git a/lib/hypertemplate/builder/cache.rb b/lib/hypertemplate/builder/cache.rb
new file mode 100644
index 0000000..1ac6a3d
--- /dev/null
+++ b/lib/hypertemplate/builder/cache.rb
@@ -0,0 +1,49 @@
+module Hypertemplate
+  module Builder
+    class Cache #< BasicObject
+      attr_accessor :builder
+
+      def initialize(key, builder, &block)
+        @key = key
+        @builder = builder
+
+        if cached?
+          raw = cache.read(cache_key)
+
+          if builder.class == Xml
+            data = Nokogiri::XML(raw)
+          else
+            data = MultiJson.decode(raw)
+          end
+        else
+          _builder = builder.class.new({})
+          yield _builder
+          data = _builder.raw
+
+          cache.write(cache_key, _builder.representation)
+        end
+
+        if current = builder.instance_variable_get('@current') # JSON
+          current.merge!(data)
+        else # XML
+          parent = builder.instance_variable_get('@parent')
+          data.root.children.each do |element|
+            element.parent = parent
+          end
+        end
+      end
+
+      def cached?
+        cache.exist?(cache_key)
+      end
+
+      def cache
+        Hypertemplate::Builder::Base.cache
+      end
+
+      def cache_key
+        @_generated_key ||= "#{@key}_#{builder.class.to_s.split('::').last}"
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/lib/hypertemplate/hook/rails.rb b/lib/hypertemplate/hook/rails.rb
index 93a6616..52a7f77 100644
--- a/lib/hypertemplate/hook/rails.rb
+++ b/lib/hypertemplate/hook/rails.rb
@@ -1,6 +1,12 @@
 require 'hypertemplate' unless defined? ::Hypertemplate
 
 module Hypertemplate
+  class Railtie < Rails::Railtie
+    initializer "hypertemplate.setup_cache" do
+      Hypertemplate::Builder::Base.cache = Rails.cache
+    end
+  end
+
   module RegistryContainer
 
     def hypertemplate_registry

From 6ae177fab41ae48fdd6045ab673657fbd70168b2 Mon Sep 17 00:00:00 2001
From: Tom Maeckelberghe <tom@sumocoders.be>
Date: Mon, 20 Apr 2015 14:02:33 +0200
Subject: [PATCH 2/3] Add support for emoji charaters

---
 Gemfile                           | 1 +
 lib/hypertemplate/builder/json.rb | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/Gemfile b/Gemfile
index 1b2ca7e..a8367f1 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,6 +3,7 @@ source :rubygems
 # Main dependencies
 gem "json_pure", :require => "json/pure"
 gem "nokogiri"
+gem 'yajl-ruby', require: 'yajl'
 
 group :development, :test do
   gem "ruby-debug"  , :platforms => [:mri_18]
diff --git a/lib/hypertemplate/builder/json.rb b/lib/hypertemplate/builder/json.rb
index a5e952b..d8ae93d 100644
--- a/lib/hypertemplate/builder/json.rb
+++ b/lib/hypertemplate/builder/json.rb
@@ -75,7 +75,7 @@ def insert_value(name, prefix, *args, &block)
       end
 
       def representation
-        @raw.to_json
+        Yajl::Encoder.encode(@raw)
       end
 
     private

From 0c8ce4b17d9ffd1b7a1f587249056df5dd681672 Mon Sep 17 00:00:00 2001
From: Jan De Poorter <jan@defv.be>
Date: Mon, 19 Jun 2023 16:18:13 +0200
Subject: [PATCH 3/3] Don't prefer one specific JSON solution

---
 Gemfile                           | 1 -
 lib/hypertemplate/builder/json.rb | 2 +-
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/Gemfile b/Gemfile
index a8367f1..1b2ca7e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,7 +3,6 @@ source :rubygems
 # Main dependencies
 gem "json_pure", :require => "json/pure"
 gem "nokogiri"
-gem 'yajl-ruby', require: 'yajl'
 
 group :development, :test do
   gem "ruby-debug"  , :platforms => [:mri_18]
diff --git a/lib/hypertemplate/builder/json.rb b/lib/hypertemplate/builder/json.rb
index d8ae93d..9e532ea 100644
--- a/lib/hypertemplate/builder/json.rb
+++ b/lib/hypertemplate/builder/json.rb
@@ -75,7 +75,7 @@ def insert_value(name, prefix, *args, &block)
       end
 
       def representation
-        Yajl::Encoder.encode(@raw)
+        MultiJson.encode(@raw)
       end
 
     private