Class: Patty::TimeSignature

Inherits:
Object
  • Object
show all
Defined in:
lib/patty/time_signature.rb

Constant Summary collapse

MINUTES = 
['00', '10', '20', '30', '40', '50']
HOURS = 
(0..23).map { |h| "%02d" % h }
MONTHS = 
(1..12).map { |m| "%02d" % m }

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(signature = '') ⇒ TimeSignature

Returns a new instance of TimeSignature.



21
22
23
24
25
26
 
# File 'lib/patty/time_signature.rb', line 21

def initialize(signature = '')
  if signature.empty?
    raise ArgumentError, 'signature can not be empty'
  end
  @signature = signature
end

Instance Attribute Details

#signature ⇒ Object (readonly)

Returns the value of attribute signature.



19
20
21
 
# File 'lib/patty/time_signature.rb', line 19

def signature
  @signature
end

Class Method Details

.from_datetime(datetime = lambda{ DateTime.now }) ⇒ Object 



11
12
13
14
15
16
 
# File 'lib/patty/time_signature.rb', line 11

def from_datetime(datetime = lambda{ DateTime.now })
  if datetime.is_a?(Proc)
    datetime = datetime.call
  end
  self.new(datetime.strftime("%Y-%m-%d %H:%M")).align
end

Instance Method Details

#==(other) ⇒ Object 



28
29
30
 
# File 'lib/patty/time_signature.rb', line 28

def ==(other)
  signature == other.signature
end

#align ⇒ Object 



53
54
55
 
# File 'lib/patty/time_signature.rb', line 53

def align
  self.class.new "%04d-%02d-%02d %02d:%02d" % [year, month, day, hour, aligned_minute]
end

#aligned_minute ⇒ Object 



85
86
87
88
89
90
91
 
# File 'lib/patty/time_signature.rb', line 85

def aligned_minute
  if kind == :minute
    "%-1d0" % (minute / 10)
  else
    minute
  end
end

#children ⇒ Object 



101
102
103
104
105
106
107
108
109
110
111
112
113
114
 
# File 'lib/patty/time_signature.rb', line 101

def children
  case kind
    when :hour
      MINUTES.map{ |m| self.class.new "#{signature}:#{m}" }
    when :day
      HOURS.map{ |h| self.class.new "#{signature} #{h}" }
    when :month
      (1..days_count).map{ |d| self.class.new "#{signature}-" + '%02d' % d }
    when :year
      MONTHS.map{ |m| self.class.new "#{signature}-#{m}" }
    else
      []
  end
end

#crop(to = 13) ⇒ Object 



61
62
63
 
# File 'lib/patty/time_signature.rb', line 61

def crop(to = 13)
  signature.size > to ? signature[0, to] : signature
end

#cut(from = 0, length = 2) ⇒ Object 



57
58
59
 
# File 'lib/patty/time_signature.rb', line 57

def cut(from = 0, length = 2)
  signature.size > from ? signature[from, length] : ''
end

#day ⇒ Object 



73
74
75
 
# File 'lib/patty/time_signature.rb', line 73

def day
  cut(8).to_i
end

#days_count ⇒ Object 



93
94
95
 
# File 'lib/patty/time_signature.rb', line 93

def days_count
  Date.new(year, month, -1).day
end

#hour ⇒ Object 



77
78
79
 
# File 'lib/patty/time_signature.rb', line 77

def hour
  cut(11).to_i
end

#kind ⇒ Object 



36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
 
# File 'lib/patty/time_signature.rb', line 36

def kind
  case signature.size
    when 16
      :minute
    when 13
      :hour
    when 10
      :day
    when 7
      :month
    when 4
      :year
    else
      raise 'broken signature'
  end
end

#minute ⇒ Object 



81
82
83
 
# File 'lib/patty/time_signature.rb', line 81

def minute
  cut(14).to_i
end

#month ⇒ Object 



69
70
71
 
# File 'lib/patty/time_signature.rb', line 69

def month
  cut(5).to_i
end

#parents ⇒ Object 



97
98
99
 
# File 'lib/patty/time_signature.rb', line 97

def parents
  [crop(13), crop(10), crop(7), crop(4)].delete_if{ |p| p.empty? }.map{ |p| self.class.new p }
end

#to_datetime ⇒ Object 



116
117
118
 
# File 'lib/patty/time_signature.rb', line 116

def to_datetime
  DateTime.new year, month, day, hour, minute
end

#to_s ⇒ Object 



32
33
34
 
# File 'lib/patty/time_signature.rb', line 32

def to_s
  signature
end

#year ⇒ Object 



65
66
67
 
# File 'lib/patty/time_signature.rb', line 65

def year
  cut(0, 4).to_i
end