in reply to Multiple STDIN sources

Basically, perl blows right past the "my $ans = <STDIN>;" line.
Really? Not for me. I've added the following lines before your exit: 
chomp $ans;
print "Got '$ans'\n";
print "stream = $stream";

[download]
And this is what I get when running: 
$ ./stdin 
foo
bar
^D
Do you want to process the stream?yes
Got 'yes'
stream = foo
bar
$

[download]

Abigail

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Re: Re: Multiple STDIN sources
by The Mad Hatter (Priest) on Mar 10, 2004 at 00:29 UTC
    This is because it isn't reading it from a pipe in your test: it's reading it all from user input (as you typed in text followed by a control-D). If you do something like echo foo | ./stdin it does blow right past the prompt like the OP said.
[reply]
[d/l]
      Oh, I see. In that case, just reopen STDIN, and read from the terminal: 
      #!/usr/bin/perl -w

use strict;
$| = 1;

my $stream;

while (<>) {
  $stream .= $_;
}

open STDIN, "/dev/tty" or die;

print "Do you want to process the stream? ";
my $ans = <STDIN>;

chomp $ans;
print "Got '$ans'\n";
print "stream = $stream";

#...
exit;
__END__
$ echo foo | ./stdin 
Do you want to process the stream? yes
Got 'yes'
stream = foo
$

      [download]
      Abigail
[reply]
[d/l]

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