区块宏处理器扩展示例

目的: 创建一个名为`gist`的块宏，用于嵌入 gist。

sample-with-gist-macro.adoc

.My Gist
gist::123456[]

代码块宏

class GistBlockMacro < Asciidoctor::Extensions::BlockMacroProcessor
  use_dsl

命名为：gist

def process parent, target, attrs
    title_html = (attrs.has_key? 'title') ?
        %(<div class="title">#{attrs['title']}</div>\n) : nil

html
    html = %(<div class="openblock gist">
#{title_html}<div class="content">
<script src="https://gist.github.com/#{target}.js"></script>
</div>
</div>)

create_pass_block parent, html, attrs, subs: nil
  end
end

使用方式

Asciidoctor::Extensions.register do
  block_macro GistBlockMacro if document.basebackend? 'html'
end

Asciidoctor.convert_file 'sample-with-gist.adoc', safe: :safe