Class: Kasefet::Config

Inherits:
Object
  • Object
show all
Defined in:
lib/kasefet/config.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file) ⇒ Config

Returns a new instance of Config.



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# File 'lib/kasefet/config.rb', line 3

def initialize(file)
  @file = file
  @settings = {}
end

Instance Attribute Details

#file ⇒ Object

Returns the value of attribute file.



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# File 'lib/kasefet/config.rb', line 8

def file
  @file
end

Instance Method Details

#[](key) ⇒ Object 



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# File 'lib/kasefet/config.rb', line 10

def [](key)
  return key.split(".").reduce(@settings) { |hash, segment| hash ? hash[segment] : nil }
end

#[]=(key, value) ⇒ Object 



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# File 'lib/kasefet/config.rb', line 14

def []=(key, value)
  last_segment = key.split(".")[0..-2].reduce(@settings) { |hash, segment| hash[segment] ||= {} }
  last_segment[key.split(".")[-1]] = value
end

#each_keys ⇒ Object 



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# File 'lib/kasefet/config.rb', line 19

def each_keys()
  return @settings.keys.each unless block_given?

  @settings.keys.each do |key|
    yield key
  end
end

#flatten_hash(hash) ⇒ Object 



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# File 'lib/kasefet/config.rb', line 81

def flatten_hash(hash)
  hash.reduce({}) do |result, pair|
    key, value = pair
    if value.is_a? Hash
      flatten_hash(value).each do |suffix, subvalue|
        result["#{key}.#{suffix}"] = subvalue
      end
    else
      result[key] = value
    end
    result
  end
end

#format(file_path = @file) ⇒ Object 



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# File 'lib/kasefet/config.rb', line 60

def format(file_path = @file)
  case File.extname(file_path)
  when ".json"
    require 'json'
    return @settings.to_json
  when ".yaml", ".yml"
    require 'yaml'
    return @settings.to_yaml
  else
    return flatten_hash(@settings).map do |key, value|
      if value.is_a? Array
        value.map do |array_value|
          "#{key}=#{array_value}"
        end.join("\n")
      else
        "#{key}=#{value}"
      end
    end.join("\n")
  end
end

#load ⇒ Object 



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# File 'lib/kasefet/config.rb', line 27

def load
  return unless File.exists?(@file)
  parse(File.read(@file))
end

#parse(contents, file_path = @file) ⇒ Object 



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# File 'lib/kasefet/config.rb', line 32

def parse(contents, file_path = @file)
  case File.extname(file_path)
  when ".yaml", ".yml"
    require 'yaml'
    @settings = YAML.load(contents)
  when ".json"
    require 'json'
    @settings = JSON.parse(contents)
  else
    # try the key=value format
    content = contents
    content.split("\n").each do |line|
      key, value = line.split("=")
      value = value.to_i if value =~ /\d+/
      if self[key]
        self[key] = [self[key]] unless self[key].is_a? Array
        self[key] << value
      else
        self[key] = value
      end
    end
  end
end

#save ⇒ Object 



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# File 'lib/kasefet/config.rb', line 56

def save
  File.write(@file, format())
end