Merge pull request #269 from perseoGI/vendor-package

Added vendored package blog post

_plugins/inline_highlight.rb

@@ -0,0 +1,27 @@
+# jekyll_inline_highlight
+#
+# A Liquid tag for inline syntax highlighting in Jekyll
+#
+# https://github.com/bdesham/inline_highlight
+#
+# Copyright (c) 2014-2015, Tom Preston-Werner and Benjamin Esham
+# See README.md for full copyright information.
+
+module Jekyll
+  class InlineHighlightBlock < Tags::HighlightBlock
+
+    def add_code_tag(code)
+      code_attributes = [
+        "class=\"highlight language-#{@lang.to_s.gsub("+", "-")}\"",
+        "data-lang=\"#{@lang.to_s}\""
+      ].join(" ")
+      "<code #{code_attributes}>#{code.chomp.strip}</code>"
+    end
+
+    def render(context)
+      super.strip
+    end
+  end
+end
+
+Liquid::Template.register_tag("ihighlight", Jekyll::InlineHighlightBlock)

_plugins/line_highlighting.rb

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+# Monkey-patch to allow highlighting lines
+# PerseoGI: this is provisional until Jekyll 4.4 gets released which incorporates this feature
+# Used same parameter (mark_lines) as in https://github.com/jekyll/jekyll/pull/9138
+#
+# Notice a `.hll` style must be defined in your CSS to highlight the lines
+module Jekyll
+  module Tags
+    class HighlightBlock
+      def render_rouge(code)
+        require "rouge"
+
+        formatter = Rouge::Formatters::HTMLLineHighlighter.new(
+          ::Rouge::Formatters::HTML.new,
+          highlight_lines: parse_highlighted_lines(@highlight_options[:mark_lines])
+        )
+        lexer = ::Rouge::Lexer.find_fancy(@lang, code) || Rouge::Lexers::PlainText
+        formatter.format(lexer.lex(code))
+      end
+
+      private
+
+      def parse_highlighted_lines(lines_string)
+        return [] if lines_string.nil?
+
+        lines_string.map(&:to_i)
+      end
+    end
+  end
+end

_plugins/md_hl_syntax_to_liquid.rb

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+# frozen_string_literal: true
+
+# Convert markdown highlight lines feature syntax to liquid syntax
+# Author: https://github.com/jekyll/jekyll/issues/8621#issuecomment-839184339
+# Usage:
+# ```py{1 2-3}
+# def foo():
+#     print("Hello World")
+#     a = 42
+# ```
+
+Jekyll::Hooks.register(:documents, :pre_render) do |document, payload|
+  docExt = document.extname.tr(".", "")
+
+  # only process if we deal with a markdown file
+  if payload["site"]["markdown_ext"].include?(docExt)
+    document.content.gsub!(
+      /^\`\`\`([A-z]+){([\d\s]+)}$(.*?)^\`\`\`$/im,
+      "{% highlight \\1 mark_lines=\"\\2\" %}\\3{% endhighlight %}"
+    )
+  end
+end