如何使用 Nokogiri 拆分 HTML 文档? [英] How to split a HTML document using Nokogiri?
问题描述
现在，我正在将 HTML 文档拆分成这样的小块:(正则表达式简化-跳过标题标签内容和结束标签)
Right now, I'm splitting the HTML document to small pieces like this: (regular expression simplified - skipping header tag content and closing tag)
document.at('body').inner_html.split(/<\s*h[2-6][^>]*>/i).collect do |fragment|
Nokogiri::HTML(fragment)
end
有没有更简单的方法来执行这种拆分?
Is there an easier way to perform that splitting?
文档很简单，里面只有标题、段落和格式化的文本.例如:
The document is very simple, just headers, paragraphs and formatted text in it. For example:
<body>
<h1>Main</h1>
<h2>Sub 1</h2>
<p>Text</p>
-----
<h2>Sub 2</h2>
<p>Text</p>
-----
<h3>Sub 2.1</h3>
<p>Text</p>
-----
<h3>Sub 2.2</h3>
<p>Text</p>
</body>
对于那个样品，我需要四件.
For that sample, I need to get four pieces.
推荐答案
我只是做了一些类似的事情.我将一个大的 HTML 文件分成章节"，其中一章由 <h1> 标签开始.
I just had to do something similar. I split a large HTML file in to "chapters" where a chapter is started by an <h1> tag.
我还想在哈希中保留章节的标题，并忽略第一个 标签之前的所有内容.
I also wanted to keep the title of the chapters in the hash and ignore everything before the first <h1> tag.
代码如下:
full_book = Nokogiri::HTML(File.read('full-book.html'))
@chapters = full_book.xpath('//body').children.inject([]) do |chapters_hash, child|
if child.name == 'h1'
title = child.inner_text
chapters_hash << { :title => title, :contents => ''}
end
next chapters_hash if chapters_hash.empty?
chapters_hash.last[:contents] << child.to_xhtml
chapters_hash
end
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