how to remove blank lines inside a document while using nokogiri?

Arup Rakshit

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Nov 7, 2013, 3:24:54 PM11/7/13

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Hi,

I wrote a code as below :

require 'nokogiri'

doc = Nokogiri.HTML <<-eot
<p>Here you can find
    <a href="ssNODELINK/SurvivalStatistics">Survival stats </a>
    <a href="ssNODELINK/SmokingStatistics">Smoking stats </a>
    <a href="ssNODELINK/RisksAndCauses"> and Risks </a>
    <a target="_blank" href="http://www.something.ac.uk/"> Something </a>
of recent research</p>
eot

nodesets = doc.css('p > a')
nodesets.each do |nd|
  nd.unlink if nd['href'].include? 'ssNODELINK'
end

puts doc
# >> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
# >> <html><body><p>Here you can find
# >>     
# >>     
# >>     
# >>     <a target="_blank" href="http://www.something.ac.uk/"> Something </a>
# >> of recent research</p></body></html>

But my expected output is :

# >> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
# >> <html><body><p>Here you can find    
# >>     <a target="_blank" href="http://www.something.ac.uk/"> Something </a>
# >> of recent research</p></body></html>

Any help on this regard ?

Walter Lee Davis

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Nov 7, 2013, 3:30:43 PM11/7/13

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So your issue here is whitespace? I've always had to run my Nokogiri output through a regexp to fix that, never found any way to do it in Noko itself.

puts doc.to_html.gsub(/^\s*\n/, "")

Walter

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Wayne Brisette

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Nov 7, 2013, 3:44:29 PM11/7/13

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Walter: I think what he is referring to is the extra returns he is getting in the output, not 'whitespace' per se. Look at his example again with that in mind. His posted expected results simply don't have the additional line feeds/returns in them. I think that's what he is trying to no have in his output.

Wayne

From: Walter Lee Davis <wa...@wdstudio.com>
To: nokogi...@googlegroups.com
Sent: Thursday, November 7, 2013 2:30 PM
Subject: Re: [nokogiri-talk] how to remove blank lines inside a document while using nokogiri?

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Arup Rakshit

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Nov 7, 2013, 11:38:53 PM11/7/13

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Thanks!

But I want to modify the original doc also. Not the output only to format.

Walter Lee Davis

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Nov 7, 2013, 11:55:09 PM11/7/13

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See if this works: http://stackoverflow.com/questions/1792592/better-way-to-remove-blank-lines-after-nokogiri-node-removal

Walter

Arup Rakshit

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Nov 21, 2013, 9:32:28 AM11/21/13

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I tried but not working for me. Those are not removed, which I wanted to be. :(

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