Merge pull request #1043 from DeterminateSystems/perl-warnings

Fixup Perl warnings around undefined variables

src/lib/Hydra/Plugin/BitBucketStatus.pm

@@ -10,7 +10,7 @@ use Hydra::Helper::CatalystUtils;
 
 sub isEnabled {
     my ($self) = @_;
-    return $self->{config}->{enable_bitbucket_status} == 1;
+    return ($self->{config}->{enable_bitbucket_status} // 0) == 1;
 }
 
 sub toBitBucketState {

src/lib/Hydra/Plugin/CoverityScan.pm

@@ -53,7 +53,7 @@ sub buildFinished {
     my $covTarball;
 
     opendir my $tarballs_handle, $tarballs or die;
-    while (my $file = readdir $tarballshandle) {
+    while (my $file = readdir $tarballs_handle) {
         next unless $file =~ /.*-coverity-int\.(tgz|lzma|xz|bz2|zip)$/;
         $covTarball = "$tarballs/$file"; last;
     }

src/lib/Hydra/Plugin/EmailNotification.pm

@@ -12,7 +12,7 @@ use Hydra::Helper::Email;
 
 sub isEnabled {
     my ($self) = @_;
-    return $self->{config}->{email_notification} == 1;
+    return ($self->{config}->{email_notification} // 0) == 1;
 }
 
 my $template = <<EOF;

src/lib/Hydra/Plugin/GitInput.pm

@@ -34,7 +34,7 @@ sub _parseValue {
     my $start_options = 3;
     # if deepClone has "=" then is considered an option
     # and not the enabling of deepClone
-    if (index($deepClone, "=") != -1) {
+    if (defined($deepClone) && index($deepClone, "=") != -1) {
         undef $deepClone;
         $start_options = 2;
     }

src/lib/Hydra/Plugin/GithubRefs.pm

@@ -97,8 +97,8 @@ sub _iterate {
 }
 
 sub fetchInput {
-    my ($self, $type, $name, $value, $project, $jobset) = @_;
-    return undef if $type ne "github_refs";
+    my ($self, $input_type, $name, $value, $project, $jobset) = @_;
+    return undef if $input_type ne "github_refs";
 
     my ($owner, $repo, $type, $fut, $prefix) = split ' ', $value;
     die "type field is neither 'heads' nor 'tags', but '$type'"

src/lib/Hydra/Plugin/S3Backup.pm

@@ -21,11 +21,18 @@ sub isEnabled {
 }
 
 my $client;
-my %compressors = (
-    xz => "| $Nix::Config::xz",
-    bzip2 => "| $Nix::Config::bzip2",
-    none => ""
-);
+my %compressors = ();
+
+$compressors{"none"} = "";
+
+if (defined($Nix::Config::bzip2)) {
+    $compressors{"bzip2"} = "| $Nix::Config::bzip2",
+}
+
+if (defined($Nix::Config::xz)) {
+    $compressors{"xz"} = "| $Nix::Config::xz",
+}
+
 my $lockfile = Hydra::Model::DB::getHydraPath . "/.hydra-s3backup.lock";
 
 sub buildFinished {