Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!batcomputer!rpi!leah!emb978
From: emb978@leah.Albany.Edu (Eric M. Boehm)
Newsgroups: comp.unix.questions
Subject: Reading stdin in raw mode
Keywords: stdin raw ioctl read
Message-ID: <1713@leah.Albany.Edu>
Date: 26 Mar 89 05:25:16 GMT
Organization: The University at Albany, Computer Services Center
Lines: 16

I am trying to read stdin in raw mode. I am sending the terminal enquire
string (ESC Z) and trying to read the response. I must be in raw mode
since the response string has no terminating newline. I can do this
with getchar() but getchar() returns no error code if there is nothing to be
read, it just keeps waiting for input. However, if I try to read stdin
with read(2) in nonblocking mode, I am told there is nothing there
(returns -1).

My goal is to be able to read stdin until there are no more characters
left. If I don't read all the characters they pop up on the command line
when the program finishes. I currently read until I get what I know will
be the last character but this seems rather hacked.

Eric M. Boehm
EMB978@ALBNY1VX.BITNET
EMB978@LEAH.ALBANY.EDU