jekyll: add include_remote plugin

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

_plugins/include_remote.rb

@@ -0,0 +1,54 @@
+module Jekyll
+  class IncludeRemoteTag < Liquid::Tag
+    def initialize(tag_name, params, tokens)
+      @page, @line_start, @line_end = params.split
+      @line_start, @line_end = resolve_line_numbers(@line_start, @line_end)
+      super
+    end
+
+    def render(context)
+      site = context.registers[:site]
+      page = context.registers[:page]
+
+      beginning_time = Time.now
+      Jekyll.logger.info "Starting plugin include_remote.rb..."
+
+      if context[@page.strip]
+        @page = context[@page.strip]
+      end
+
+      inc = File.join("_includes", @page)
+      Jekyll.logger.info "  Inject #{inc} to #{page['path']}"
+
+      lines = File.readlines(inc)[@line_start..@line_end]
+
+      site.config['defaults'].each do |default|
+        if default['scope']['path'] == inc
+          page['edit_url'] = default['values']['edit_url']
+          page['issue_url'] = default['values']['issue_url']
+          Jekyll.logger.info "    edit_url:  #{page['edit_url']}"
+          Jekyll.logger.info "    issue_url: #{page['issue_url']}"
+          break
+        end
+      end
+
+      end_time = Time.now
+      Jekyll.logger.info "done in #{(end_time - beginning_time)} seconds"
+
+      lines.join
+    end
+
+    def resolve_line_numbers(first, last)
+      if first.nil? && last.nil?
+        first = 0
+        last  = -1
+      elsif last.nil?
+        last = first
+      end
+      [first.to_i, last.to_i]
+    end
+  end
+
+end
+
+Liquid::Template.register_tag('include_remote', Jekyll::IncludeRemoteTag)