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package KeptFile;
use OutputFile;
@ISA = (OutputFile);
use strict;
use Carp;
use File::Basename;
use File::Spec;
########################################################################
sub new {
croak 'bad argument count' unless @_ == 4;
my ($proto, $basis, $suffix, $dir) = @_;
my $class = ref($proto) || $proto;
$basis = $basis->basis if ref $basis;
my ($basename, undef, $basefix) = fileparse($basis, qr{\.[^.]+});
my $filename = File::Spec->catfile($dir, "$basename.$suffix");
my $self = $class->SUPER::new($basis, $filename);
return $self;
}
########################################################################
1;
__END__
=head1 Name
KeptFile - persistent compiler output files
=head1 Synopsis
use KeptFile;
my $cppOut = new KeptFile ('code.c', 'i', '/output/directory');
system 'cpp', 'code.c', '-o', $cppOut->filename;
=head2 Description
C<KeptFile> represents an intermediate output file generated by some
stage of a C<Cilly>-based compiler that should be retained after
compilation. It is a concrete subclass of L<OutputFile|OutputFile>.
Use C<KeptFile> when the user has asked for intermediate files to be
retained, such as via gcc's C<-save-temps> flag.
=head2 Public Methods
=over
=item new
C<new KeptFile ($basis, $suffix, $dir)> constructs a new C<KeptFile>
instance. The new file name is constructed using the base file name
of C<$basis> with its suffix replaced by C<$suffix> and its path given
by C<$dir>. For example,
new KeptFile ('/foo/code.c', 'i', '/bar')
yields a C<KeptFile> with file name F</bar/code.i>.
C<$basis> may be either absolute or relative; only the trailing file
name is used. C<$basis> can also be an C<OutputFile> instance, in
which case C<< $basis->basis >> is used as the actual basis. See
L<OutputFile/"basis"> for more information on basis flattening.
C<$suffix> should not include a leading dot; this will be added
automatically.
C<$dir> may be either absolute or relative. It is common to use F<.>
as the directory, which puts the C<KeptFile> in the current working
directory.
=back
=head1 See Also
L<OutputFile>, L<TempFile>.
=cut
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