Sha256: 2e8347369ce6dfba2bd29e4097e7321af5397cddfc8626ab25e2fae6058cec92
Contents?: true
Size: 1.41 KB
Versions: 156
Compression:
Stored size: 1.41 KB
Contents
class OCR
attr_reader :text
def initialize(text)
@text = text.split("\n")
end
def convert
numbers = []
each_row do |row|
numbers << values_in_row(row)
end
format(numbers)
end
private
def format(numbers)
numbers.map(&:join).join(',')
end
def values_in_row(row)
values = []
each_column do |column|
values << value_at(row, column)
end
values
end
def each_row
(0...row_count).step(4) do |row|
yield row
end
end
def each_column
(0...column_count).step(3) do |column|
yield column
end
end
def value_at(row, column)
value(pattern_at(row, column)) || garble
end
def pattern_at(row, column)
[
text[row][column, 3],
text[row + 1][column, 3],
text[row + 2][column, 3],
text[row + 3][column, 3]
]
end
def column_count
text.first.length
end
def row_count
text.length
end
def garble
'?'
end
def value(pattern)
{
[' _ ', '| |', '|_|', ' '] => '0',
[' ', ' |', ' |', ' '] => '1',
[' _ ', ' _|', '|_ ', ' '] => '2',
[' _ ', ' _|', ' _|', ' '] => '3',
[' ', '|_|', ' |', ' '] => '4',
[' _ ', '|_ ', ' _|', ' '] => '5',
[' _ ', '|_ ', '|_|', ' '] => '6',
[' _ ', ' |', ' |', ' '] => '7',
[' _ ', '|_|', '|_|', ' '] => '8',
[' _ ', '|_|', ' _|', ' '] => '9'
}[pattern]
end
end
Version data entries
156 entries across 156 versions & 1 rubygems