X-Authentication-Warning:	delorie.com: mail set sender to djgpp-bounces using -f
X-Recipient:	djgpp AT delorie DOT com
X-Original-DKIM-Signature:	v=1; a=rsa-sha256; c=relaxed/relaxed;
	d=gmail.com; s=20161025;
	h=mime-version:from:date:message-id:subject:to;
	bh=z/5npJqFXV4o+cN+PV5/I4DENUfOlXFSQc8Lbob3154=;
	b=i7uj7Xu1eGpHuCm3kq56FnrMeJFZUm1in7K+4tRTTsKzIbWs1X5PbH+6vgY46Y8nrp
	VoZ9dem5zMcha3cxumin7sbNqsXCgOpIArvoUDzpqIpxHYWDTUg05vWJkopjuQAVSj1Q
	fs6dNq5wZwYePga2ypEnal2tp0CObv3LgQnEi8BE2PK1Bkf6gQagE0iXmEAzVErXQcJw
	d+ryqcJ4L0/9QHuNHxpiFmzkiQMfmuojWeMj82ahH+qNMbJ5mE2BvWP4h4JSy8Gwatgx
	zlh1GZk6R7ZIRXgOvsrD2qdSnS3HvUtBKkSvhjUDle2sl5nTSLoHKzLnScCH/eL27soL
	13WA==
X-Google-DKIM-Signature:	v=1; a=rsa-sha256; c=relaxed/relaxed;
	d=1e100.net; s=20161025;
	h=x-gm-message-state:mime-version:from:date:message-id:subject:to;
	bh=z/5npJqFXV4o+cN+PV5/I4DENUfOlXFSQc8Lbob3154=;
	b=mdH4WdKJIwdr2Eg3wRvLwbQIg9P0mRMx2Q5yndm7tLn+tY1oE2yxyiqoNOEbOJS+Jx
	prDFd27mb9ZyBCJWkHU21EV5fsig6q6/WB8vibspn7JuzxhbYousX+1+Jt4Ubizq6MYv
	MlqxPdyxkaDQDmeKLNVn/Rnz/dofddlPncWwMOeDZsSWH7NB/TdoczJeneiSp95AMpje
	Uj5HMcieCH+U6qqvBHdmLaEOhGg3Ud8iksRdwQ3NkZck7kyGvzvsHUUa6DW/kAK9Mj43
	SIxzWxBDEADVFl2WuYsU0nTPD0TdMYH+7h32a2XI8VqPbkboFJ5Y3sMt1lidTf42wvix
	WYGA==
X-Gm-Message-State:	AOAM5323AtFDiLzSD1tbyYjWx3X5+2xvPtWllSbtknF/Ln3sEhLWUx4a
	6RvU2Mf0hjXcAXPw4YKaa5ffaNJavnpwegvfm3yjga8g
X-Google-Smtp-Source:	ABdhPJybtnOQn3Z5ggJshUi3gcWzBA9WmftcBA6entmpjSGw7cPXa/jjxY5Z/aQeC2C1WyU5fRrKWj9LC6uzrK7Mawc=
X-Received:	by 2002:aca:d4d1:: with SMTP id l200mr13357705oig.119.1616852348914;
	Sat, 27 Mar 2021 06:39:08 -0700 (PDT)
MIME-Version:	1.0
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
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.

- Raw text -