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# a small package to capture standard output, so that we can test the
# output of Tangram::Relational->deploy()
{
package Capture;
sub new {
my $class = shift;
my $self = { stdout => "" };
bless $self, $class;
return $self;
}
sub capture_print {
my $self = shift;
$self->{so} = tie(*STDOUT, __PACKAGE__, \$self->{stdout})
or die "failed to tie STDOUT; $!";
}
sub release_stdout {
my $self = shift;
delete $self->{so};
untie(*STDOUT);
return $self->{stdout};
}
sub TIEHANDLE {
my $class = shift;
my $ref = shift;
return bless({ stdout => $ref }, $class);
}
sub PRINT {
my $self = shift;
${$self->{stdout}} .= join('', map { defined $_?$_:""} @_);
}
sub PRINTF {
my ($self) = shift;
print STDERR "OUCH @_\n";
my ($fmt) = shift;
${$self->{stdout}} .= sprintf($fmt, @_)
if (@_);
}
sub glob {
return \*STDOUT;
}
}
1;
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