Class: Html2rss::Selectors::PostProcessors::Gsub

Inherits:
Base
  • Object
show all
Defined in:
lib/html2rss/selectors/post_processors/gsub.rb

Overview

Imagine this HTML:

<h1>Foo bar and boo<h1>

YAML usage example:

selectors:
  title:
    selector: h1
    post_process:
      name: gsub
      pattern: boo
      replacement: baz

Would return:

'Foo bar and baz'

‘pattern` can be a Regexp or a String. If it is a String, it will remove one pair of surrounding slashes (’/‘) to keep backwards compatibility and then parse it to build a Regexp.

‘replacement` can be a String or a Hash.

See the doc on [String#gsub](ruby-doc.org/core/String.html#method-i-gsub) for more info.

Instance Attribute Summary

Attributes inherited from Base

#context, #value

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Base

assert_type, expect_options

Constructor Details

#initialize(value, context) ⇒ Gsub

Returns a new instance of Gsub.

Parameters:



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# File 'lib/html2rss/selectors/post_processors/gsub.rb', line 44

def initialize(value, context)
  super

  options = context[:options]

  @replacement = options[:replacement]
  @pattern = options[:pattern]
end

Class Method Details

.validate_args!(value, context) ⇒ void

This method returns an undefined value.

Parameters:

  • value (String) —

    extracted selector value

  • context (Selectors::Context) —

    post-processor context



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# File 'lib/html2rss/selectors/post_processors/gsub.rb', line 35

def self.validate_args!(value, context)
  assert_type value, String, :value, context:
  expect_options(%i[replacement pattern], context)
  assert_type context.dig(:options, :replacement), [String, Hash], :replacement, context:
end

Instance Method Details

#get ⇒ String

Returns:

  • (String) 


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# File 'lib/html2rss/selectors/post_processors/gsub.rb', line 55

def get
  value.to_s.gsub(pattern, replacement)
end