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Think about Loose Coupling

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I want to get both the output and status of a pipe. Here is a working example:

#!/usr/bin/perl use strict; open my $fh, '-|', 'bash -c "echo Hello; exit 1"'; print <$fh>; close $fh; my $status = $? >> 8; print "$status\n";

Fine. It outputs

Hello 1

Now let's try to use autodie:

#!/usr/bin/perl use strict; use autodie; open my $fh, '-|', 'bash -c "echo Hello; exit 1"'; print <$fh>; close $fh; my $status = $? >> 8; print "$status\n";

No good, that breaks it:

Hello Can't close(GLOB(0x10082a098)) filehandle: '' at line 7

It is the "close" statement. So we can take that out.

use strict; use autodie; open my $fh, '-|', 'bash -c "echo Hello; exit 1"'; print <$fh>; #close $fh; my $status = $? >> 8; print "$status\n";

Now it is broken differently---it has lost the exit status:

Hello 0

I need to call close in order to get the exit status of a pipe.

So now I have settled on this ugly thing:

use strict; use autodie; open my $fh, '-|', 'bash -c "echo Hello; exit 1"'; print <$fh>; {no autodie; close $fh;} my $status = $? >> 8; print "$status\n";

That seems to work, but I'm not doing any error checking on the close statement:

Hello 1
Can I use close with autodie when my pipe fails? If not, how should I check for errors?

In reply to close and autodie on pipes by apomatix

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