diff options
Diffstat (limited to '_plugins')
| -rw-r--r-- | _plugins/add-anchor-to-code-block-line-numbers.rb | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/_plugins/add-anchor-to-code-block-line-numbers.rb b/_plugins/add-anchor-to-code-block-line-numbers.rb new file mode 100644 index 0000000..d4cf763 --- /dev/null +++ b/_plugins/add-anchor-to-code-block-line-numbers.rb @@ -0,0 +1,20 @@ +PREFIX = '<pre class="lineno">' +POSTFIX = '</pre>' +Jekyll::Hooks.register :documents, :post_render do |doc| + if doc.output_ext == ".html" + code_block_counter = 1 + doc.output = doc.output.gsub(/<pre class="lineno">[\n0-9]+<\/pre>/) do |match| + line_numbers = match + .gsub(/<pre class="lineno">([\n0-9]+)<\/pre>/, '\1') + .split("\n") + + anchored_line_numbers_array = line_numbers.map do |n| + id = "B#{code_block_counter}-L#{n}" + "<a class=\"code-line-anchor\" id=\"#{id}\" href=\"##{id}\">#{n}</a>" + end + code_block_counter += 1 + + PREFIX + anchored_line_numbers_array.join("\n") + POSTFIX + end + end +end |