Sha256: 37e6b3fc558d8523a53b6987b581ebac08852c3f541ee4cfbd6cc731711e2efa
Contents?: true
Size: 1.06 KB
Versions: 240
Compression:
Stored size: 1.06 KB
Contents
class OcrNumbers
DIGITS = {
' _ | ||_| ' => '0',
' | | ' => '1',
' _ _||_ ' => '2',
' _ _| _| ' => '3',
' |_| | ' => '4',
' _ |_ _| ' => '5',
' _ |_ |_| ' => '6',
' _ | | ' => '7',
' _ |_||_| ' => '8',
' _ |_| _| ' => '9'
}
DIGITS.default = '?'
def self.convert(text)
OcrNumbers.new(text).convert
end
def initialize(text)
@text = text
end
def convert
raise ArgumentError unless valid?
numbers.map {|lines| decode(lines) }.join(',')
end
private
attr_reader :text
def valid?
(rows.size % 4).zero? &&
(first_row_width % 3).zero? &&
rows[1..-1].all? {|row| row.size == first_row_width }
end
def decode(lines)
lines.map {|line| line.scan(/.../) }.
transpose.
map {|char_rows| DIGITS[char_rows.join] }.
join
end
def numbers
text.split("\n").each_slice(4)
end
def rows
@rows ||= text.split("\n")
end
def first_row_width
@first_row_width ||= rows.first.size
end
end
module BookKeeping
VERSION = 1
end
Version data entries
240 entries across 240 versions & 1 rubygems