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Merge pull request #4403 from miere43/win-getch

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Implemented terminal.getch() for Windows
This commit is contained in:
Andreas Rumpf 2016-06-28 18:55:59 +02:00 • committed by GitHub
commit f7f0cff8b3
2 changed files with 35 additions and 12 deletions
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26
lib/pure/terminal.nim
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@ -493,17 +493,21 @@ template styledEcho*(args: varargs[expr]): expr =
## Echoes styles arguments to stdout using ``styledWriteLine``.
callStyledEcho(args)
when defined(nimdoc):
proc getch*(): char =
## Read a single character from the terminal, blocking until it is entered.
## The character is not printed to the terminal. This is not available for
## Windows.
discard
elif not defined(windows):
proc getch*(): char =
## Read a single character from the terminal, blocking until it is entered.
## The character is not printed to the terminal. This is not available for
## Windows.
proc getch*(): char =
## Read a single character from the terminal, blocking until it is entered.
## The character is not printed to the terminal.
when defined(windows):
let fd = getStdHandle(STD_INPUT_HANDLE)
var keyEvent = KEY_EVENT_RECORD()
var numRead: cint
while true:
# Block until character is entered
doAssert(waitForSingleObject(fd, INFINITE) == WAIT_OBJECT_0)
doAssert(readConsoleInput(fd, addr(keyEvent), 1, addr(numRead)) != 0)
if numRead == 0 or keyEvent.eventType != 1 or keyEvent.bKeyDown == 0:
continue
return char(keyEvent.uChar)
else:
let fd = getFileHandle(stdin)
var oldMode: Termios
discard fd.tcgetattr(addr oldMode)