TextMate-Syntax-Highlighting的问题

我能实现这个插件的功能，譬如blog资源，有title和content字段，对content字段渲染

<p>
  <b>Content:</b>
  <%=code(@blog.content, :theme => "blackboard", :lang => "ruby", :line_numbers => true)%>
</p>

这样会将content里的内容都当做ruby代码来渲染，但是如果是content字段有很多代码和文字内容，该怎么处理。。请教中。

 

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解答：

 

content中代码块是在<code lang="language"></code>标签中的。所以对content进行扫描，将代码块进行渲染，然后返回整体显示结果。具体过程就是：

1.在application_helper.rb中

def syntax_highlight_and_markdown(text, options = {})
             text_pieces = text.split(/(<c0de>|<c0de lang="[A-Za-z0-9_-]+">|<c0de lang='[A-Za-z0-9_-]+'>|<\/c0de>)/)
             in_pre = false
             language = nil
             text_pieces.collect do |piece|
                 if piece =~ /^<c0de( lang=(["'])?(.*)\2)?>$/
                     language = $3
                     in_pre = true
                     nil
                 elsif piece == "</c0de>"
                     in_pre = false
                     language = nil
                     nil
                 elsif in_pre
                     code(piece.strip, :lang => language,:theme => "blackboard", :line_numbers => true)
                 else
                     markdown(piece, options)
                 end
             end
         end
            
         def markdown(text, options = {})
             if options[:strip]
                 BlueCloth.new(strip_tags(text.strip)).to_html
             else
                 BlueCloth.new(text.strip).to_html
             end
         end

然后在视图中：

 

<%=    syntax_css("blackboard")%>

...


<%= syntax_highlight_and_markdown @post.content %>