root
/
openssl
mirror of https://github.com/openssl/openssl.git
1
0
Fork 0
Code Issues Actions 7 Packages Projects Releases Wiki Activity
openssl/util/perl/with_fallback.pm

26 lines
687 B
Perl
Raw Normal View History

Copyright consolidation; .pm and Configure Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-04-20 22:20:59 +08:00
# Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the OpenSSL license (the "License"). You may not use
# this file except in compliance with the License. You can obtain a copy
# in the file LICENSE in the source distribution or at
# https://www.openssl.org/source/license.html
Refactor file writing - arrange for use of bundled Perl modules as fallback For our own convenience, we need a mechanism to be able to fall back on bundled Perl modules. It's a minimal package that's called like this: use with_fallback qw(Module1 Module2 ...); For each module, it will try to require them from the system installation, and failing that, it will temporarly add external/perl and try to require transfer::{ModuleName}. It requires that each bundled Perl modules is accompanied by a small transfer module (external/perl/transfer/ModuleName.pm in our example) that knows exactly what to load. Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-01-22 19:37:31 +08:00
package with_fallback;
sub import {
use File::Basename;
use File::Spec::Functions;
foreach (@_) {
eval "require $_";
if ($@) {
Consolidate the locations where we have our internal perl modules Instead of having perl modules under test/testlib, util and util/perl, consolidate them all to be inside util/perl. Reviewed-by: Andy Polyakov <appro@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4069)
2017-08-02 04:10:39 +08:00
unshift @INC, catdir(dirname(__FILE__),
"..", "..", "external", "perl");
Refactor file writing - arrange for use of bundled Perl modules as fallback For our own convenience, we need a mechanism to be able to fall back on bundled Perl modules. It's a minimal package that's called like this: use with_fallback qw(Module1 Module2 ...); For each module, it will try to require them from the system installation, and failing that, it will temporarly add external/perl and try to require transfer::{ModuleName}. It requires that each bundled Perl modules is accompanied by a small transfer module (external/perl/transfer/ModuleName.pm in our example) that knows exactly what to load. Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-01-22 19:37:31 +08:00
my $transfer = "transfer::$_";
eval "require $transfer";
shift @INC;
warn $@ if $@;
}
}
}
1;