修改 html 节点内的文本 - nokogiri [英] Modifying text inside html nodes - nokogiri

问题描述

假设我有以下 HTML:

Let's say i have the following HTML:

<ul><li>Bullet 1.</li>
<li>Bullet 2.</li>
<li>Bullet 3.</li>
<li>Bullet 4.</li>
<li>Bullet 5.</li></ul>

我希望用它来做的是用它自己和一个尾随星号替换任何句号、问号或感叹号，这是在 HTML 节点内，然后转换回 HTML.所以结果是:

What I wish to do with it, is replace any periods, question marks or exclamation marks with itself and a trailing asterisk, that is inside an HTML node, then convert back to HTML. So the result would be:

<ul><li>Bullet 1.*</li>
<li>Bullet 2.*</li>
<li>Bullet 3.*</li>
<li>Bullet 4.*</li>
<li>Bullet 5.*</li></ul>

我一直在 IRB 中对此进行了一些处理，但无法完全弄清楚.这是我的代码:

I've been messing around with this a bit in IRB, but can't quite figure it out. here's the code i have:

 html = "<ul><li>Bullet 1.</li>
<li>Bullet 2.</li>
<li>Bullet 3.</li>
<li>Bullet 4.</li>
<li>Bullet 5.</li></ul>"

doc = Nokogiri::HTML::DocumentFragment.parse(html)
doc.search("*").map { |n| n.inner_text.gsub(/(?<=[.!?])(?!\*)/, "#{$1}*") }

返回的数组已正确解析，但我不确定如何将其转换回 HTML.我可以使用另一种方法来修改inner_text吗?

The array that comes back is parsed out correctly, but I'm just not sure on how to convert it back into HTML. Is there another method i can use to modify the inner_text as such?

推荐答案

这段代码怎么样?

doc.traverse do |x|
  if x.text?
    x.content = x.content.gsub(/(?<=[.!?])(?!\*)/, "#{$1}*")
  end
end

traverse 方法与 search("*").each 的作用几乎相同.然后检查该节点是否为 Nokogiri::XML::Text，如果是，则根据需要更改 content.

The traverse method does pretty much the same as search("*").each. Then you check that the node is a Nokogiri::XML::Text and, if so, change the content as you wished.

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