Class: Arsenicum::Formatter

Inherits:
Object
  • Object
show all
Includes:
Util
Defined in:
lib/arsenicum/formatter.rb

Direct Known Subclasses

ActiveRecord

Defined Under Namespace

Classes: ActiveRecord

Constant Summary collapse

DATE_FORMAT = 
'%Y-%m-%d'.freeze
DATE_TIME_FORMAT = 
'%Y-%m-%dT%H:%M:%S %Z %z'.freeze
TYPE_RAW = 
'raw'.freeze
TYPE_DATE = 
'date'.freeze
TYPE_DATETIME = 
'datetime'.freeze
TYPE_CLASS = 
'class'.freeze
TYPE_ARRAY = 
'array'.freeze
TYPE_HASH = 
'hash'.freeze
TYPE_ANY = 
'marshal'.freeze

Instance Method Summary collapse

Methods included from Util

#camelcase, #classify, #constantize, included, #normalize_hash, #underscore

Instance Method Details

#format(value) ⇒ Object 



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# File 'lib/arsenicum/formatter.rb', line 10

def format(value)
  format_for_embedded_classes(value) ||
      format_by_extension(value) ||
      format_by_default(value)
end

#format_by_default(value) ⇒ Object 



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# File 'lib/arsenicum/formatter.rb', line 63

def format_by_default(value)
  {
      type: TYPE_ANY,
      value: Marshal.dump(value).unpack('H*').first,
  }
end

#format_by_extension(value) ⇒ Object 



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# File 'lib/arsenicum/formatter.rb', line 59

def format_by_extension(value)
  nil
end

#format_for_embedded_classes(value) ⇒ Object 



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# File 'lib/arsenicum/formatter.rb', line 24

def format_for_embedded_classes(value)
  case value
    when Integer, Float, String, TrueClass, FalseClass, NilClass, Symbol
      {
          type: TYPE_RAW,
          value: value.inspect,
      }
    when DateTime, Time
      {
          type: TYPE_DATETIME,
          value: value.strftime(DATE_TIME_FORMAT),
      }
    when Date
      {
          type: TYPE_DATE,
          value: value.strftime(DATE_FORMAT),
      }
    when Class
      {
          type: TYPE_CLASS,
          value: value.name,
      }
    when Array
      {
          type: TYPE_ARRAY,
          values: value.map{|v|format(v)},
      }
    when Hash
      {
          type: TYPE_HASH,
          values: value.inject({}){|h, kv|(k,v)=kv;h[k.to_s]=format(v);h},
      }
  end
end

#parse(value) ⇒ Object 



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# File 'lib/arsenicum/formatter.rb', line 70

def parse(value)
  value = normalize_hash(value)

  return eval value[:value] if value[:type] == TYPE_RAW
  parse_for_embedded_classes(value) ||
      parse_by_extension(value) ||
      parse_by_default(value)
end

#parse_by_default(value) ⇒ Object 



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# File 'lib/arsenicum/formatter.rb', line 104

def parse_by_default(value)
  ::Marshal.restore [value[:value]].pack('H*')
end

#parse_by_extension(_) ⇒ Object 



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# File 'lib/arsenicum/formatter.rb', line 100

def parse_by_extension(_)
  nil
end

#parse_for_embedded_classes(value) ⇒ Object 



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# File 'lib/arsenicum/formatter.rb', line 79

def parse_for_embedded_classes(value)
  case value[:type]
    when TYPE_DATE
      Date.strptime(value[:value], DATE_FORMAT)
    when TYPE_DATETIME
      Time.strptime(value[:value], DATE_TIME_FORMAT)
    when TYPE_CLASS
      Module.const_get value[:value].to_sym
    when TYPE_ARRAY
      value[:values].map do |value|
        parse(value)
      end
    when TYPE_HASH
      value[:values].inject({}) do |h, key_value|
        (key, value) = key_value
        h[key.to_s.to_sym] = parse(value)
        h
      end
  end
end