A reader for ascii art numbers:

 _  _  _        _  _  _  _
  ||_||_|  ||_| _|| | _||_
  ||_||_|  |  ||_ |_| _| _|
  
  output: 788142035

If a digit does not fit, it returns ? for that digit.

reader := AsciiArt.NewReader(myInputReader)
// read the next value
record, err := reader.Read()
record.Write(os.Stdout)

go test 'github.com/roymiloh/AsciiArt' -v --run=Test

There's also an example test (--run=Example)
Code Coverage

For another mapping of numbers, you should fork it and change it internally, at least until next versions. You should also override the following configurations (of Reader):

• DigitsPerRecord
• LinesPerRecord
• ColumnsPerDigit

• Writer (from raw numbers to ascii art numbers)
• Better customization