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#!/usr/bin/env perl
use warnings 'FATAL' => 'all';
use strict;
use File::Fetch;
use IO::Handle; # for autoflush
use Cwd;
my $PROG = 'preps/perl';
my %BADNAMES = ('perl-libwww' => 'libwww-perl');
sub err
{
print STDERR "$PROG: ", @_, "\n";
exit 1;
}
sub matchdist
{
my($dist) = @_;
# Refresh our local list of distributions if needed.
my $var = $ENV{'PKGVAR'}
or err('PKGVAR env variable is unset');
if(!-f "$var/cpan.dists" || -M "$var/cpan.dists" > 1) {
print STDERR "$PROG: Refreshing local CPAN data.\n";
my $cwd = getcwd();
chdir $var or die "chdir: $!";
system 'fetchcpan';
exit 1 unless($? == 0);
chdir $cwd or die "chdir: $!";
}
open(DISTS, '<', "$var/cpan.dists") or err("open: $!");
while(<DISTS>) {
my @f = split;
my $d = lc $f[0]; $d =~ tr/-_/--/s;
next unless($d eq lc($dist));
close(DISTS);
return ($f[0], $f[2]);
}
close(DISTS);
return ();
}
sub fetchdist
{
my($cpath) = @_;
my $file = $cpath; $file =~ s{^.*/}{};
if(-f $file) {
print STDERR "$file already downloaded.\n";
return;
}
my $mirror = $ENV{'CPANMIRROR'} || 'ftp://cpan.pair.com';
my $url = "${mirror}/authors/id/${cpath}";
print STDERR "Downloading $file... ";
my $ff = File::Fetch->new('uri' => $url);
die "FAILED\n" unless($ff->fetch());
print STDERR "OK\n";
}
sub main
{
my $dist = shift or die "usage: $PROG [package name]\n";
my $guess;
if($BADNAMES{$dist}){
$dist = $BADNAMES{$dist};
}elsif($dist =~ s/^perl-// == 0){
$guess = 1;
$dist = "app-$dist";
}
STDERR->autoflush(1);
my ($realname, $cpath) = matchdist($dist);
unless($realname){
if($guess){
return 100
}else{
## If its a perl- package tell prepkg to cleanup.
print STDERR qq{$PROG: failed to find perl dist similar to '$dist'\n};
return 101
}
}
fetchdist($cpath);
print <<"END_META";
url
https://metacpan.org/release/$realname
source
http://search.cpan.org/CPAN/authors/id/$cpath
END_META
my $file = $cpath; $file =~ s{.*/}{};
system 'perl-dist' => $file;
return $? >> 8;
}
exit main(@ARGV);
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