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From: "Ozkan Sezer (sezeroz AT gmail DOT com) [via djgpp AT delorie DOT com]" <djgpp AT delorie DOT com>
Date: Sat, 27 Mar 2021 16:39:08 +0300
Message-ID: <CAA2C=vDMw+wQsbxDkYcXsPgdqeUMDNwz7-NCujx+G11M1vpmzg@mail.gmail.com>
Subject: issue with popen and reading from stdout
To: djgpp AT delorie DOT com
Content-Type: text/plain; charset="UTF-8"
Reply-To: djgpp AT delorie DOT com

The code is basically:

p = popen(cmdline, "rb");
while ((n = fread(buf, 1, BUFLEN, p)) > 0) {
    fwrite(buf, 1, n, t);
}
pclose(p);

... where cmdline is like "unrar p -inul ponylips.rar".  The "p" makes
unrar to extract to stdout, -inul makes unrar to emit no messages.

The issue is:  Whatever I do, including inserting calls like
setmode(fileno(stdout),O_BINARY), extracted file has 0x0a -> 0x0d 0x0a
changes and corrupted.  For what it's worth, manually running that cmd
on the console itself, like "unrar p -inul ponylips.rar > ponylips.mod"
gives the same result.

Is this a thing with djgpp, or possibly something to do with unrar for
dos?  (The unrar version in question is v3.80 and is downloadable from
https://www.rarlab.com/rar_add.htm which seems to be built using djppp.)

--
O.S.