Class: Passcard::Grid

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Defined in:
lib/passcard/grid.rb

Instance Method Summary collapse

Constructor Details

#initialize(arr) ⇒ Grid

Returns a new instance of Grid.



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# File 'lib/passcard/grid.rb', line 9

def initialize(arr)
  @arr = arr
  raise_if_invalid_array!
end

Instance Method Details

#==(g2) ⇒ Object 



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# File 'lib/passcard/grid.rb', line 14

def ==(g2)
  self.to_a == g2.to_a && g2.is_a?(self.class)
end

#[](*args) ⇒ Object 



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# File 'lib/passcard/grid.rb', line 18

def [](*args)
  self.rows_at(*args)
end

#alphanumeric? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/passcard/grid.rb', line 67

def alphanumeric?
  to_str =~ /\A[a-z0-9]+\z/i
end

#at(rows: [], cols: []) ⇒ Object 



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# File 'lib/passcard/grid.rb', line 48

def at(rows: [], cols: [])
  return self if rows.empty? && cols.empty?
  return self.rows_at(*rows) if cols.empty?
  return self.cols_at(*cols) if rows.empty?
  self.rows_at(*rows).cols_at(*cols)
end

#col_size ⇒ Object 



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# File 'lib/passcard/grid.rb', line 26

def col_size
  @arr.any? ? @arr[0].size : 0
end

#cols_at(*cols) ⇒ Object 



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# File 'lib/passcard/grid.rb', line 43

def cols_at(*cols)
  cols = cols.map{|a| a.respond_to?(:to_a) ? a.to_a : a}
  self.class.new @arr.map{|a| cols.flatten.map{|c| a[c % a.length]}}
end

#has_symbols? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/passcard/grid.rb', line 71

def has_symbols?
  return false if empty?
  return false if alphanumeric?
  (to_str.chars - ('!'..'~').to_a).empty?
end

#inspect ⇒ Object 



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# File 'lib/passcard/grid.rb', line 107

def inspect
  chars = to_str[0..36] + (length > 36 ? "...." : "")
  chars = "" if length == 0
  "#{self.class}[rows=#{row_size},cols=#{col_size},length=#{length}]{\"#{chars}\"}"
end

#length ⇒ Object 



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# File 'lib/passcard/grid.rb', line 34

def length
  row_size * col_size
end

#numeric? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/passcard/grid.rb', line 63

def numeric?
  to_str =~ /\A[0-9]+\z/
end

#print(*args) ⇒ Object 



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# File 'lib/passcard/grid.rb', line 101

def print(*args)
  options = args.last.is_a?(Hash) ? args.pop : {}
  puts(col_size > 40 || options[:concise] ? to_s.gsub(" ", '') : to_s)
  return self
end

#raise_if_invalid_array! ⇒ Object

Raises:



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# File 'lib/passcard/grid.rb', line 114

def raise_if_invalid_array!
  valid   = @arr.is_a?(Array)
  valid &&= @arr.reject{|r| r.is_a?(Array)}.empty?
  valid &&= @arr.join.length == @arr.size * (@arr[0].size rescue 0)
  raise Passcard::Error, "A Grid requires 2D array" unless valid
end

#rotate(r: 0, c: 0) ⇒ Object

Returns new grid by rotating self so that the element at cnt in self is the first element of the new grid. If cnt is negative then it rotates in the opposite direction.



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# File 'lib/passcard/grid.rb', line 81

def rotate(r: 0, c: 0)
  self.class.new @arr.rotate(r).map{|row| row.rotate(c)}
end

#row_size ⇒ Object 



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# File 'lib/passcard/grid.rb', line 22

def row_size
  @arr.size
end

#rows_at(*rows) ⇒ Object 



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# File 'lib/passcard/grid.rb', line 38

def rows_at(*rows)
  rows = rows.map{|a| a.respond_to?(:to_a) ? a.to_a : a}
  self.class.new rows.flatten.map{|a| @arr[a % @arr.size]}
end

#size ⇒ Object 



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# File 'lib/passcard/grid.rb', line 30

def size
  [row_size, col_size]
end

#slice(coord1, coord2) ⇒ Object 



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# File 'lib/passcard/grid.rb', line 55

def slice(coord1, coord2)
  self.rows_at(coord1[0]...coord2[0]).cols_at(coord1[1]...coord2[1])
end

#to_a ⇒ Object 



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# File 'lib/passcard/grid.rb', line 85

def to_a
  @arr
end

#to_s ⇒ Object 



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# File 'lib/passcard/grid.rb', line 97

def to_s
  @arr.map{|x| x.join(" ")}.join("\n")
end

#to_str ⇒ Object 



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# File 'lib/passcard/grid.rb', line 89

def to_str
  @arr.join
end

#to_vstr ⇒ Object 



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# File 'lib/passcard/grid.rb', line 93

def to_vstr
  transpose.to_str
end

#transpose ⇒ Object 



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# File 'lib/passcard/grid.rb', line 59

def transpose
  self.class.new @arr.transpose
end