use temp file instead of IPC::Open2 for Win32

Change implementation of filter_generated_code with a string for program
name from IPC::Open2 to File::Temp with redirection, because this code
was hanging on Win32 (RT#72226).

diff --git a/Changes b/Changes
index 343657a..4fb5c90 100644 (file)
--- a/Changes
+++ b/Changes
@@ -1,5 +1,7 @@
 Revision history for Perl extension DBIx::Class::Schema::Loader
 
+        - use a temp file for filter_generated_code with a string program name
+          instead of IPC::Open2, which hangs on Win32 (RT#72226)
         - previous version referred to the wrong RT# for the uniq_to_primary
           change, it is actually (RT#51696)
 

diff --git a/lib/DBIx/Class/Schema/Loader/Base.pm b/lib/DBIx/Class/Schema/Loader/Base.pm
index 0ea7f0b..09bd617 100644 (file)
--- a/lib/DBIx/Class/Schema/Loader/Base.pm
+++ b/lib/DBIx/Class/Schema/Loader/Base.pm
@@ -25,8 +25,7 @@ use Try::Tiny;
 use DBIx::Class ();
 use Encode qw/encode decode/;
 use List::MoreUtils qw/all firstidx/;
-use IPC::Open2;
-use Symbol 'gensym';
+use File::Temp 'tempfile';
 use namespace::clean;
 
 our $VERSION = '0.07011';
@@ -1854,23 +1853,26 @@ sub _write_classfile {
             );
         }
         else {
-            my ($out, $in) = (gensym, gensym);
+            my ($fh, $temp_file) = tempfile();
 
-            my $pid = open2($out, $in, $filter)
-                or croak "Could not open pipe to $filter: $!";
-
-            print $in $text;
+            binmode $fh, ':encoding(UTF-8)';
+            print $fh $text;
+            close $fh;
 
-            close $in;
+            open my $out, qq{$filter < "$temp_file"|}
+                or croak "Could not open pipe to $filter: $!";
 
             $text = decode('UTF-8', do { local $/; <$out> });
 
             $text =~ s/$CR?$LF/\n/g;
 
-            waitpid $pid, 0;
+            close $out;
 
             my $exit_code = $? >> 8;
 
+            unlink $temp_file
+                or croak "Could not remove temporary file '$temp_file': $!";
+
             if ($exit_code != 0) {
                 croak "filter '$filter' exited non-zero: $exit_code";
             }