Raw mode for current-input-port.

Raw mode for current-input-port.

[Rob Browning]

I'd like to have (read-char) return immediately when a key is pressed,
rather than waiting for a carriage return.  At first I thought setvbuf
would do it, but then I recalled that that was probably designed for
output ports.  So do we already have anything suitable?  I'm guessing
cfmakeraw might work, but I'd need to wrap that.

Thanks

-- 
Rob Browning
rlb @defaultvalue.org, @linuxdevel.com, and @debian.org
Previously @cs.utexas.edu
GPG starting 2002-11-03 = 14DD 432F AE39 534D B592  F9A0 25C8 D377 8C7E 73A4


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Re: Raw mode for current-input-port.

[Christopher Cramer]

On Sat, Feb 08, 2003 at 11:02:14AM -0600, Rob Browning wrote:
> I'd like to have (read-char) return immediately when a key is pressed,
> rather than waiting for a carriage return.  At first I thought setvbuf
> would do it, but then I recalled that that was probably designed for
> output ports.  So do we already have anything suitable?  I'm guessing
> cfmakeraw might work, but I'd need to wrap that.

Right, the buffering is not on the application side, it's on the system
side, so you need to change the terminal mode.  So... there are already
four different Ncurses libaries available.  It should be trivial to make
a soft port that calls getch.

If you can wait a day, I'll be releasing a new version of mine
(current is at http://www.pyro.net/~crayc/guile-ncurses.tar.gz)
tomorrow that will work with 1.6.

-- 
Christopher Cramer <crayc@pyro.net> <http://www.pyro.net/~crayc/>
"All you have to do is tell them they are being attacked and denounce the
pacifists for lack of patriotism and exposing the country to danger. It
works the same way in any country." - Hermann Georing, 1946


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