Module: Appfuel::Config::FileLoader

Included in:
DefinitionDsl
Defined in:
lib/appfuel/config/file_loader.rb

Overview

Handle loading files and parsing them correctly based on their type. The file loader used for loading configuration data into a definition

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#file_module ⇒ Object 



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# File 'lib/appfuel/config/file_loader.rb', line 8

def file_module
  @file_module ||= ::File
end

#json_module ⇒ Object 



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# File 'lib/appfuel/config/file_loader.rb', line 12

def json_module
  @json_module || ::JSON
end

#yaml_module ⇒ Object 



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# File 'lib/appfuel/config/file_loader.rb', line 16

def yaml_module
  @yaml_module ||= YAML
end

Instance Method Details

#load_file(definition) ⇒ Hash

Load file will search through a configuration’s definition file paths and use the first on that exists. It parse it based on the file type.



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# File 'lib/appfuel/config/file_loader.rb', line 42

def load_file(definition)
  paths = definition.file

  paths.each do |path|
    ext = file_module.extname(path).strip.downcase[1..-1]
    parse_method = "parse_#{ext}"
    unless respond_to?(parse_method)
      fail "extension (#{ext}), for (#{definition.key}: #{path}) " +
           "is not valid, only yaml and json are supported"
    end

    if file_module.exists?(path)
      config = public_send(parse_method, path)
      unless config.is_a?(Hash)
        fail "[config #{parse_method}] config must be a hash"
      end
      config.deep_symbolize_keys!
      return config[definition.key]
    end
  end

  list = paths.join(',')
  fail "none of :#{definition.key} config files exist at (#{list})"
end

#parse_json(path) ⇒ Hash 



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# File 'lib/appfuel/config/file_loader.rb', line 22

def parse_json(path)
  file = file_module.read(path)
  json_module.parse(file)
end

#parse_yaml(path) ⇒ Hash Also known as: parse_yml 



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# File 'lib/appfuel/config/file_loader.rb', line 29

def parse_yaml(path)
  yaml_module.load_file(path)
end