Class: Html2rss::AttributePostProcessors::Substring
- Inherits:
-
Object
- Object
- Html2rss::AttributePostProcessors::Substring
- Defined in:
- lib/html2rss/attribute_post_processors/substring.rb
Overview
Returns a defined part of a String.
Both parameters must be an Integer and they can be negative. The end
parameter can be omitted, in that case it will not cut the String at the end.
A Regexp or a MatchString is not supported.
See the [‘String#(ruby-doc.org/core/String.html#method-i-5B-5D) documentation for more information.
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
- #get ⇒ String
-
#initialize(value, env) ⇒ Substring
constructor
A new instance of Substring.
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 29 def initialize(value, env) @value = value @options = env[:options] end |
Instance Method Details
#get ⇒ String
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# File 'lib/html2rss/attribute_post_processors/substring.rb', line 36 def get ending = @options.fetch(:end, @value.length).to_i @value[@options[:start].to_i..ending] end |