72 lines
1.2 KiB
Perl
72 lines
1.2 KiB
Perl
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package CGI::Switch;
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use Carp;
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use strict;
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use vars qw($VERSION @Pref);
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$VERSION = '0.06';
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@Pref = qw(CGI::Apache CGI); #default
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sub import {
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my($self,@arg) = @_;
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@Pref = @arg if @arg;
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}
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sub new {
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shift;
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my($file,$pack);
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for $pack (@Pref) {
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($file = $pack) =~ s|::|/|g;
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eval { require "$file.pm"; };
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if ($@) {
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#XXX warn $@;
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next;
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} else {
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#XXX warn "Going to try $pack\->new\n";
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my $obj;
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eval {$obj = $pack->new(@_)};
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if ($@) {
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#XXX warn $@;
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} else {
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return $obj;
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}
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}
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}
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Carp::croak "Couldn't load+construct any of @Pref\n";
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}
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1;
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__END__
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=head1 NAME
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CGI::Switch - Try more than one constructors and return the first object available
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=head1 SYNOPSIS
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use CGISwitch;
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-or-
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use CGI::Switch This, That, CGI::XA, Foo, Bar, CGI;
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my $q = new CGI::Switch;
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=head1 DESCRIPTION
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Per default the new() method tries to call new() in the three packages
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Apache::CGI, CGI::XA, and CGI. It returns the first CGI object it
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succeeds with.
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The import method allows you to set up the default order of the
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modules to be tested.
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=head1 SEE ALSO
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perl(1), Apache(3), CGI(3), CGI::XA(3)
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=head1 AUTHOR
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Andreas KE<ouml>nig E<lt>a.koenig@mind.deE<gt>
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=cut
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