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import strformat
## We keep the last input char to handle a pain point in the funge-98 spec :
## when reading from the decimal input you need to read until you encounter a
## non numeric char, but not drop it
var defaultInputLastChar: ref int
var stdIoUnbuffered = false
proc defaultCharacterInput*(): int =
if defaultInputLastChar != nil:
result = defaultInputLastChar[]
defaultInputLastChar = nil
return result
if not stdIoUnbuffered:
setStdIoUnbuffered()
stdIoUnbuffered = true
return stdin.readChar().int()
proc defaultDecimalInput*(): int =
while true: # First we need to find the next numeric char
let c = defaultCharacterInput()
if c >= int('0') and c <= int('9'):
result = c - int('0')
break
while true: # then we read until we encounter a non numeric char
let c = defaultCharacterInput()
if c >= int('0') and c <= int('9'):
result = result * 10 + c - int('0')
else:
new(defaultInputLastChar)
defaultInputLastChar[] = c
break
return result
proc defaultCharacterOutput*(v: int) =
discard stdout.writeChars(@[v.char()], 0, 1)
proc defaultDecimalOutput*(v: int) =
stdout.write(&"{v} ")
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