diff options
| -rw-r--r-- | lib/pure/terminal.nim | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/lib/pure/terminal.nim b/lib/pure/terminal.nim index 8607066f3..e0e2aa247 100644 --- a/lib/pure/terminal.nim +++ b/lib/pure/terminal.nim @@ -45,6 +45,21 @@ when defined(windows): var oldAttr = getAttributes() + proc winGetch(): cint {.header: "<conio.h>", importc: "_getch".} +else: + import termios, unsigned + + proc setRaw(fd: FileHandle, time: cint = TCSAFLUSH) = + var mode: Termios + discard fd.tcgetattr(addr mode) + mode.iflag = mode.iflag and not Tcflag(BRKINT or ICRNL or INPCK or ISTRIP or IXON) + mode.oflag = mode.oflag and not Tcflag(OPOST) + mode.cflag = (mode.cflag and not Tcflag(CSIZE or PARENB)) or CS8 + mode.lflag = mode.lflag and not Tcflag(ECHO or ICANON or IEXTEN or ISIG) + mode.cc[VMIN] = 1.cuchar + mode.cc[VTIME] = 0.cuchar + discard fd.tcsetattr(time, addr mode) + proc setCursorPos*(x, y: int) = ## sets the terminal's cursor to the (x,y) position. (0,0) is the ## upper left of the screen. @@ -349,6 +364,19 @@ macro styledEcho*(m: varargs[expr]): stmt = result.add(newCall(bindSym"write", bindSym"stdout", newStrLitNode("\n"))) result.add(newCall(bindSym"resetAttributes")) +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): + result = winGetch().char + else: + let fd = getFileHandle(stdin) + var oldMode: Termios + discard fd.tcgetattr(addr oldMode) + fd.setRaw() + result = stdin.readChar() + discard fd.tcsetattr(TCSADRAIN, addr oldMode) + when isMainModule: system.addQuitProc(resetAttributes) write(stdout, "never mind") |