From: Hans-Bernhard Broeker Newsgroups: comp.os.msdos.djgpp Subject: Re: getting redir-ed Filename? Date: 28 Sep 2001 10:35:47 GMT Organization: Aachen University of Technology (RWTH) Lines: 22 Message-ID: <9p1jq3$445$1@nets3.rz.RWTH-Aachen.DE> References: NNTP-Posting-Host: acp3bf.physik.rwth-aachen.de X-Trace: nets3.rz.RWTH-Aachen.DE 1001673347 4229 137.226.32.75 (28 Sep 2001 10:35:47 GMT) X-Complaints-To: abuse AT rwth-aachen DOT de NNTP-Posting-Date: 28 Sep 2001 10:35:47 GMT Originator: broeker@ To: djgpp AT delorie DOT com DJ-Gateway: from newsgroup comp.os.msdos.djgpp Reply-To: djgpp AT delorie DOT com Radical wrote: > Is it possible for a program to obtain the name used on the command > line of a redirected filename? If so, then only in a highly unportable, and probably fragile way: it might be doable in raw DOS, but probably not in Windows NT. I.e. unless you're 100% sure you have to do it, don't. stdin is supposed to be an "opaque" stream. I.e. it's none of your program's business to know where it came from, besides knowing the generaly type of file or device sitting on the other end --- which is what you have isatty() for. The only instance that really knows what filename belongs to a given file handle is the operating system. In raw DOS, you *can* use undocumented methods to access the system file table and read out that type of information. In NT or 2K, I seem to remember you can't. -- Hans-Bernhard Broeker (broeker AT physik DOT rwth-aachen DOT de) Even if all the snow were burnt, ashes would remain.