Class: Html2rss::AttributePostProcessors::Substring

Inherits:
Object
  • Object
show all
Defined in:
lib/html2rss/attribute_post_processors/substring.rb

Overview

Returns a defined part of a String.

The end parameter can be omitted, in that case it will not cut the String at the end.

Imagine this HTML:

<h1>Foo bar and baz<h1>

YAML usage example:

selectors:
  title:
    selector: h1
    post_process:
     name: substring
     start: 4
     end: 6

Would return:

'bar'

Instance Method Summary collapse

Constructor Details

#initialize(value, env) ⇒ Substring

Returns a new instance of Substring



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# File 'lib/html2rss/attribute_post_processors/substring.rb', line 23

def initialize(value, env)
  @value = value
  @options = env[:options]
end

Instance Method Details

#get ⇒ String

Returns:

  • (String) 


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# File 'lib/html2rss/attribute_post_processors/substring.rb', line 30

def get
  ending = @options.fetch('end', @value.length).to_i
  @value[@options['start'].to_i..ending]
end