问题
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
Is there an easier way to perform that splitting?
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>
For that sample, I need to get four pieces.
回答1:
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.
I also wanted to keep the title of the chapters in the hash and ignore everything before the first <h1> tag.
Here is the code:
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
来源：https://stackoverflow.com/questions/3484874/how-to-split-a-html-document-using-nokogiri