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Hello. Is it possible to disable line buffering on input? Right now i am getchar() on stdin and waiting for an EOF to terminate input. I only get what is writtin into stdin though on a enter press. How to I read the buffer as it comes in without buffering? Will read() do the trick? Is it the only way to do it?
Even read() will not do the trick. The terminal device is line buffered at the driver level. Even if you called setvbuf() to disable the C library's line buffering, the device itself is still line buffered. Disabling the device buffering is an OS-specific operation, i.e. not portable.Quote:
Originally Posted by valaris
Sure, it is a way - any text editor do it. See 'man termios'. Pay attentiom to the part 'Canonical and non-canonical mode'Quote:
Originally Posted by valaris
Yes, that will work, and since this is the Linux forum, that is the correct solution. I think brewbuck answered the C programming forum question - in which case the answer is "depends on which OS you have".Quote:
Originally Posted by Valery Reznic
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Mats
I don't think I am follow. Editors works under each operation system and termios is quite standardQuote:
Originally Posted by matsp
(at least among Unixes). So what is Linux specific here ?
It is not, as you say, specific to Linux, but the functionality to do this in for example Windows is quite different. So as long as it is some form of Unix (including Linux and MacOS X), then your answer is correct, but if we wanted code that works in Windows, DOS, OS/2 or some other OS not related to Unix, then we'd need a different function. I'm sure this is what brewbuck was referring to.Quote:
Originally Posted by Valery Reznic
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Mats
I forget that OS otherthen Unix exist.Quote:
Originally Posted by matsp