Remove custom example plugin. (#25784)

1 files changed, 0 insertions, 95 deletions

diff --git a/_plugins/example.rb b/_plugins/example.rb
deleted file mode 100644
index 913289720..000000000
--- a/_plugins/example.rb
+++ /dev/null
@@ -1,95 +0,0 @@
-module Jekyll
-  module Tags
-    class ExampleBlock < Liquid::Block
-      include Liquid::StandardFilters
-
-      # The regular expression syntax checker. Start with the language specifier.
-      # Follow that by zero or more space separated options that take one of three
-      # forms: name, name=value, or name="<quoted list>"
-      #
-      # <quoted list> is a space-separated list of numbers
-      SYNTAX = /^([a-zA-Z0-9.+#-]+)((\s+\w+(=((\w|[0-9_-])+|"([0-9]+\s)*[0-9]+"))?)*)$/
-
-      def initialize(tag_name, markup, tokens)
-        super
-        if markup.strip =~ SYNTAX
-          @lang = $1.downcase
-          @options = {}
-          if defined?($2) && $2 != ''
-            # Split along 3 possible forms -- key="<quoted list>", key=value, or key
-            $2.scan(/(?:\w+(?:=(?:(?:\w|[0-9_-])+|"[^"]*")?)?)/) do |opt|
-              key, value = opt.split('=')
-              # If a quoted list, convert to array
-              if value && value.include?("\"")
-                  value.gsub!(/"/, "")
-                  value = value.split
-              end
-              @options[key.to_sym] = value || true
-            end
-          end
-          @options[:linenos] = false
-        else
-          raise SyntaxError.new <<-eos
-Syntax Error in tag 'example' while parsing the following markup:
-
-  #{markup}
-
-Valid syntax: example <lang> [id=foo]
-eos
-        end
-      end
-
-      def render(context)
-        prefix = context["highlighter_prefix"] || ""
-        suffix = context["highlighter_suffix"] || ""
-        code = super.to_s.strip
-
-        output = case context.registers[:site].highlighter
-
-        when 'rouge'
-          render_rouge(code)
-        end
-
-        rendered_output = example(code) + add_code_tag(output)
-        prefix + rendered_output + suffix
-      end
-
-      def example(output)
-        "<div class=\"bd-example\"" + (@options[:id] ? " data-example-id=\"#{@options[:id]}\"" : "") + ">\n#{output}\n</div>"
-      end
-
-      def remove_holderjs(code)
-        code = code.gsub(/data-src="holder.js.+?"/, 'src="..."')
-      end
-
-      def remove_example_classes(code)
-        # Find `bd-` classes and remove them from the highlighted code. Because of how this regex works, it will also
-        # remove classes that are after the `bd-` class. While this is a bug, I left it because it can be helpful too.
-        # To fix the bug, replace `(?=")` with `(?=("|\ ))`.
-        code = code.gsub(/(?!class=".)\ *?bd-.+?(?=")/, "")
-        # Find empty class attributes after the previous regex and remove those too.
-        code = code.gsub(/\ class=""/, "")
-      end
-
-      def render_rouge(code)
-        require 'rouge'
-        formatter = Rouge::Formatters::HTML.new(line_numbers: @options[:linenos], wrap: false)
-        lexer = Rouge::Lexer.find_fancy(@lang, code) || Rouge::Lexers::PlainText
-        code = remove_holderjs(code)
-        code = remove_example_classes(code)
-        code = formatter.format(lexer.lex(code))
-        "<div class=\"highlight\"><pre>#{code}</pre></div>"
-      end
-
-      def add_code_tag(code)
-        # Add nested <code> tags to code blocks
-        code = code.sub(/<pre>\n*/,'<pre><code class="language-' + @lang.to_s.gsub("+", "-") + '" data-lang="' + @lang.to_s + '">')
-        code = code.sub(/\n*<\/pre>/,"</code></pre>")
-        code.strip
-      end
-
-    end
-  end
-end
-
-Liquid::Template.register_tag('example', Jekyll::Tags::ExampleBlock)