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#! /usr/bin/perl
# This file is part of dnstools.
# Copyright (C) 2014 Sergey Poznyakoff <gray@gnu.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
use strict;
use CPAN;
use Cwd qw(getcwd);
use File::Path qw(mkpath);
sub find_subdirs {
my $line;
my @ret;
open(my $fd, "<", "Makefile") or die "Can't open Makefile: $!";
while (<$fd>) {
s/#.*//;
next if (/^\s*$/);
if (s/\\\s*$//) {
$line .= $_;
next;
} else {
$line .= $_;
$line =~ s/^\s+//;
if ($line =~ s/^SUBDIRS\s*=\s*(.*)//) {
@ret = split /\s+/, $1;
last;
}
$line = "";
}
}
close($fd);
return @ret;
}
####
my $incdir = "inc/ExtUtils";
my $topdir = getcwd;
my @subdirs = find_subdirs();
die "No SUBDIRS found in the Makefile; make sure you run this script from the project's top-level directory" if ($#subdirs == -1);
my $modname = "ExtUtils::AutoInstall";
my $mod = CPAN::Shell->expandany($modname) or die "Can't expand $modname";
my $file = $mod->inst_file;
my $dir;
if (defined($file)) {
print "$modname installed at $file\n";
if (-f $file) {
$file =~ s#/[^/]+\.pm$##;
if (-d $file) {
$dir = $file;
} else {
die "Can't find $modname directory";
}
}
} else {
print "Getting $modname\n";
my $distro = $mod->get or die "Can't get distribution for $modname";
$dir = $distro->dir;
}
$file = "$dir/$incdir/AutoInstall.pm";
$file = "$dir/AutoInstall.pm" unless (-f $file);
-f $file or die "$file not found";
chdir $topdir or die "Can't change to $topdir: $!";
foreach my $d (@subdirs) {
print "Directory $d/$incdir\n";
if (! -d "$d/$incdir") {
mkpath "$d/$incdir" or die "Can't create $d/$incdir: $!";
}
chdir "$d/$incdir"
or die "Can't change to $d/$incdir: $!";
unlink("AutoInstall.pm");
symlink($file, "AutoInstall.pm")
or die "Can't create symlink in ". getcwd . ": $!";
chdir $topdir
or die "Can't change back to $topdir: $!";
}
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