Class: NetHTTP::Core::Utilities

Inherits:
Object
  • Object
show all
Defined in:
lib/core/utilities.rb

Class Method Summary collapse

Class Method Details

.camel_2_snake(key, type = nil) ⇒ Object

CamelCase to snake_case



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# File 'lib/core/utilities.rb', line 88

def self.camel_2_snake(key, type = nil)
  key_class = key.class.to_s.downcase
  new_key = key.to_s
               .tr('::', '/')
               .gsub(/([A-Z]+)([A-Z][a-z])/, '\1_\2')
               .gsub(/([a-z\d])([A-Z])/, '\1_\2')
               .tr('-', '_')
               .downcase

  # return the newly formatted key without modifying the type
  if type.nil?
    case key_class
    when 'string'
      return new_key.to_s
    when 'symbol'
      return new_key.to_sym
    end
  end

  # return the newly formatted key in type format requested
  return new_key.to_s if type.to_s.downcase == 'string'
  return new_key.to_sym if type.to_s.downcase == 'symbol'

  nil
end

.construct_uri(uri = {}) ⇒ Object 



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# File 'lib/core/utilities.rb', line 13

def self.construct_uri(uri = {})
  return nil if uri.empty?
  return nil if uri[:host].to_s.empty?
  return nil if uri[:scheme].to_s.empty? && uri[:port].to_s.empty?

  scheme = uri[:scheme]
  if scheme.to_s.empty?
    case uri[:port]
    when 80, '80'
      scheme = 'http'
    else
      scheme = 'https'
    end
  end

  port = uri[:port]
  if port.to_s.empty?
    case uri[:scheme]
    when 'https'
      port = 443
    when 'http'
      port = 80
    end
  end

  if uri[:user].to_s.empty? || uri[:password].to_s.empty?
    user_pass = nil
  else
    user_pass = "#{uri[:user]}:#{uri[:password]}@"
  end

  scheme = "#{scheme}://"
  host = uri[:host]
  port = ":#{port}"
  path = uri[:path]
  query = parse_query(uri[:query])

  scheme = nil if scheme.to_s.empty?
  port = nil if port.to_s.empty?
  path = nil if uri[:path].to_s.empty?
  query = nil if uri[:query].to_s.empty?

  URI("#{scheme}#{user_pass}#{host}#{port}#{path}#{query}").to_s
end

.convert_hash_keys(opts = {}) ⇒ Object

convert hash / array / nested object keys to either snake_case or CamelCase format -> ‘snake’ or ‘camel’ type -> ‘string’ or ‘symbol’



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# File 'lib/core/utilities.rb', line 140

def self.convert_hash_keys(opts = {})
  return opts[:object] if opts[:format].nil? && opts[:type].nil?

  case opts[:object]
  when Hash
    new_hash = {}
    opts[:object].each do |key, value|
      value = convert_hash_keys(
        object: value,
        format: opts[:format],
        type: opts[:type]
      )
      case opts[:format].downcase
      when 'snake'
        new_key = camel_2_snake(key, opts[:type])
      when 'camel'
        new_key = snake_2_camel(key, opts[:type])
      end
      new_hash[new_key] = value
    end
    return new_hash
  when Array
    return opts[:object].map { |value| convert_hash_keys(object: value, format: opts[:format], type: opts[:type]) }
  end

  opts[:object]
end

.empty_or_blank?(obj) ⇒ Boolean

helper method to deal with objects that will otherwise fail in scrub_obj() above

Returns:

  • (Boolean) 


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# File 'lib/core/utilities.rb', line 186

def self.empty_or_blank?(obj)
  return true if obj.nil?
  return false if obj.is_a?(TrueClass)
  return false if obj.is_a?(FalseClass)

  begin
    return true if obj.empty?
  rescue NoMethodError => err
  end

  begin
    return true if obj.blank?
  rescue NoMethodError => err
  end

  false
end

.format_xml_doc(xml_doc) ⇒ Object 



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# File 'lib/core/utilities.rb', line 253

def self.format_xml_doc(xml_doc)
  case xml_doc
  when String
    formatted_xml_doc = Nokogiri::XML(xml_doc) { |c| c.options = Nokogiri::XML::ParseOptions::STRICT }
    formatted_xml_doc = formatted_xml_doc.remove_namespaces!.to_s
  when Nokogiri::XML::Document
    formatted_xml_doc = xml_doc.remove_namespaces!.to_s
  else
    raise "Unrecognized 'xml_doc' class => '#{xml_doc.class}'"
  end

  formatted_xml_doc
end

.json_2_hash(json_doc, type = 'symbol', logger = nil) ⇒ Object

Convert JSON doc to a Ruby Hash.



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# File 'lib/core/utilities.rb', line 205

def self.json_2_hash(json_doc, type = 'symbol', logger = nil)
  msg = "Invalid 'type' => #{type}.  Use either 'string' or 'symbol' (default)."
  unless ['string', 'symbol'].include?(type.downcase)
    if logger.nil? || logger.to_s.empty?
      puts msg
    else
      logger.debug(msg)
    end
    raise msg
  end

  json_doc = JSON.parse(json_doc) if json_doc.class == String

  begin
    convert_hash_keys(
      object: json_doc,
      format: 'snake',
      type: type.downcase
    )
  rescue RuntimeError => err
    raise err
  end
end

.parse_query(query) ⇒ Object 



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# File 'lib/core/utilities.rb', line 58

def self.parse_query(query)
  # todo: may need to update this as URI.escape is considered obsolete
  case query
  when String
    query = query[1..-1] if query.start_with?('?')
    URI.escape("?#{query}")
  when Hash
    query = query.map { |k, v| "#{k}=#{v}" }
    query = query.join('&')
    URI.escape("?#{query}")
  else
    nil
  end
end

.parse_uri(uri) ⇒ Object 



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# File 'lib/core/utilities.rb', line 73

def self.parse_uri(uri)
  return if uri.nil?
  return if uri.to_s.empty?

  scheme = uri.to_s.scan(%r{([a-z][a-z0-9+\-.]*)://}).flatten[0].to_s
  return URI(uri) if scheme.downcase == 'http'
  return URI(uri) if scheme.downcase == 'https'

  port = uri.to_s.scan(%r{:([0-9]+)}).flatten[0].to_s
  return URI("http://#{uri.to_s.gsub("#{scheme}://", '')}") if port == '80'

  URI("https://#{uri.to_s.gsub("#{scheme}://", '')}")
end

.scrub_obj(obj) ⇒ Object

Recursive function to remove nil and empty values (including [] and {} from Array or Hash nested objects.



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# File 'lib/core/utilities.rb', line 169

def self.scrub_obj(obj)
  case obj
  when Array
    return obj.map { |item| scrub_obj(item) }
  when Hash
    new_hash = {}
    obj.compact.each do |key, value|
      new_hash[key] = scrub_obj(value) unless empty_or_blank?(value)
    end

    return new_hash
  end

  obj
end

.snake_2_camel(key, type = nil) ⇒ Object

snake_case to CamelCase



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# File 'lib/core/utilities.rb', line 115

def self.snake_2_camel(key, type = nil)
  key_class = key.class.to_s.downcase
  new_key = key.to_s.split('_')
  new_key = new_key[0].downcase + new_key[1..-1].map(&:capitalize).join('')

  # return the newly formatted key without modifying the type
  if type.nil?
    case key_class
    when 'string'
      return new_key.to_s
    when 'symbol'
      return new_key.to_sym
    end
  end

  # return the newly formatted key in type format requested
  return new_key.to_s if type.to_s.downcase == 'string'
  return new_key.to_sym if type.to_s.downcase == 'symbol'

  nil
end

.valid_html?(html_doc, logger = nil) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/core/utilities.rb', line 340

def self.valid_html?(html_doc, logger = nil)
  begin
    return false if html_doc.nil?
    return false if html_doc.empty?
    return false unless html_doc.include?('<html>')
    return false unless html_doc.include?('</html>')
    return false unless html_doc.include?('<body>')
    return false unless html_doc.include?('</body>')
    return false unless Nokogiri::HTML(html_doc).errors.empty?
    return false unless Nokogiri::XML(html_doc).errors.empty?

    begin
      # parse_errors = Nokogiri::HTML.parse(html_doc).validate
      parse_errors = Nokogiri::XML(html_doc).errors { |c| c.options = Nokogiri::XML::ParseOptions::STRICT }
      Nokogiri::XML(html_doc) { |c| c.options = Nokogiri::XML::ParseOptions::STRICT }
    rescue Nokogiri::XML::SyntaxError
      if logger.nil? || logger.to_s.empty?
        puts 'WARNING - HTML syntax / parsing errors detected:'
        puts parse_errors
      else
        logger.debug('WARNING - HTML syntax / parsing errors detected:')
        logger.debug(parse_errors)
      end
      return true
    end
  rescue RuntimeError => err
    raise err
  end

  true
end

.valid_json?(json_doc, logger = nil) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/core/utilities.rb', line 297

def self.valid_json?(json_doc, logger = nil)
  begin
    return false if json_doc.nil?
    return false if json_doc.empty?

    JSON.parse(json_doc)
  rescue JSON::ParserError => err
    if logger.nil? || logger.to_s.empty?
      puts 'WARNING - JSON syntax / parsing errors detected:'
      puts err
    else
      logger.debug('WARNING - JSON syntax / parsing errors detected:')
      logger.debug(err)
    end
    return false
  end

  true
end

.valid_xml?(xml_doc, logger = nil) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/core/utilities.rb', line 317

def self.valid_xml?(xml_doc, logger = nil)
  begin
    return false if xml_doc.nil?
    return false if xml_doc.empty?

    begin
      parse_errors = Nokogiri::XML(xml_doc).errors { |c| c.options = Nokogiri::XML::ParseOptions::STRICT }
      Nokogiri::XML(xml_doc) { |c| c.options = Nokogiri::XML::ParseOptions::STRICT }
    rescue Nokogiri::XML::SyntaxError
      if logger.nil? || logger.to_s.empty?
        puts 'WARNING - XML syntax / parsing errors detected:'
        puts parse_errors
      else
        logger.debug('WARNING - XML parsing / syntax errors detected:')
        logger.debug(parse_errors)
      end
      return false
    end
  end

  true
end

.xml_2_hash(xml_doc, type = 'symbol', logger = nil) ⇒ Object

Convert XML doc to a Ruby Hash.



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# File 'lib/core/utilities.rb', line 230

def self.xml_2_hash(xml_doc, type = 'symbol', logger = nil)
  msg = "Invalid 'type' => #{type}.  Use either 'string' or 'symbol' (default)."
  unless ['string', 'symbol'].include?(type.downcase)
    if logger.nil? || logger.to_s.empty?
      puts msg
    else
      logger.debug(msg)
    end
    raise msg
  end

  xml_doc = Hash.from_xml(format_xml_doc(xml_doc))
  begin
    convert_hash_keys(
      object: xml_doc,
      format: 'snake',
      type: type.downcase
    )
  rescue RuntimeError => err
    raise err
  end
end

.yaml_2_hash(yaml_doc, type = 'symbol', logger = nil) ⇒ Object

Convert YAML doc to a Ruby Hash.



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# File 'lib/core/utilities.rb', line 268

def self.yaml_2_hash(yaml_doc, type = 'symbol', logger = nil)
  msg = "Invalid 'type' => #{type}.  Use either 'string' or 'symbol' (default)."
  unless ['string', 'symbol'].include?(type.downcase)
    if logger.nil? || logger.to_s.empty?
      puts msg
    else
      logger.debug(msg)
    end
    raise msg
  end

  case yaml
  when Hash
    yaml_doc = yaml_doc.to_hash
  when String
    yaml_doc = YAML.safe_load(yaml_doc).to_hash
  end

  begin
    convert_hash_keys(
      object: yaml_doc,
      format: 'snake',
      type: type.downcase
    )
  rescue RuntimeError => err
    raise err
  end
end