CODEWITHSUNDEEP
rubyregexhtml-parsing
Gaurav Shah
Gaurav Shah

Reputation: 5279

ruby regex scan multiple match

I am trying to get the text between two tag.

<b> foo</b>bar<br/> => bar

I tried using '<b>asdasd</b>qwe<br/>'.scan(/<b>[a-zA-Z0-9]*<\/b>(.*)<br\/>/) and it gives me proper result.

but when I try this : 

'<b>exclude</b>op1<br/>exclude 2<b>exclude</b>op2<br/>exclude 2<b>exclude</b>op3<br/>exclude 2'.scan(/<b>[a-zA-Z0-9]*<\/b>(.*)<br\/>/) { |ele|
puts ele
}

It matches the first <b> tag and the last <br/> tag and returns the whole string I was expecting an array of matches

Upvotes: 0

Views: 1327

Answers (2)

pguardiario
pguardiario

Reputation: 54984

Instead of using regex on html use nokogiri:

Nokogiri::HTML.fragment(str).css('b').each do |b|
    puts b.next.text
end

Upvotes: 9

Dogbert
Dogbert

Reputation: 222040

Change (.*) to (.*?) to make it ungreedy

/<b>[a-zA-Z0-9]*<\/b>(.*?)<br\/>/

Test

[2] pry(main)> '<b>exclude</b>op1<br/>exclude 2<b>exclude</b>op2<br/>exclude 2<b>exclude</b>op3<br/>exclude 2'.scan(/<b>[a-zA-Z0-9]*<\/b>(.*?)<br\/>/) { |ele|
[2] pry(main)*   puts ele
[2] pry(main)* }  
op1
op2
op3

Upvotes: 8

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