add -d option to Porting/cmpVERSION.pl to display diffs

diff --git a/Porting/cmpVERSION.pl b/Porting/cmpVERSION.pl
index 8c23649..0f808c8 100644 (file)
--- a/Porting/cmpVERSION.pl
+++ b/Porting/cmpVERSION.pl
@@ -4,6 +4,8 @@
 # cmpVERSION - compare two Perl source trees for modules
 # that have identical version numbers but different contents.
 #
+# withg -d option, output the diffs too
+#
 # Original by slaven@rezic.de, modified by jhi.
 #
 
@@ -13,8 +15,17 @@ use ExtUtils::MakeMaker;
 use File::Compare;
 use File::Find;
 use File::Spec::Functions qw(rel2abs abs2rel catfile catdir curdir);
+use Getopt::Std;
+
+sub usage {
+die <<'EOF';
+usage: $0 [ -d ] source_dir1 source_dir2
+EOF
+}
 
-@ARGV == 2 or die "usage: $0 source_dir1 source_dir2\n";
+my %opts;
+getopts('d', \%opts) or usage;
+@ARGV == 2 or usage;
 
 for (@ARGV[0, 1]) {
     die "$0: '$_' does not look like Perl directory\n"
@@ -35,6 +46,7 @@ my %skip;
 my $skip_dirs = qr|^\./t/lib|;
 
 my @wanted;
+my @diffs;
 find(
      sub { /\.pm$/ &&
               $File::Find::dir !~ $skip_dirs &&
@@ -44,18 +56,29 @@ find(
                        catfile(catdir($dir2, $File::Find::dir), $_);
                    (my $xs_file1 = $_)     =~ s/\.pm$/.xs/;
                    (my $xs_file2 = $file2) =~ s/\.pm$/.xs/;
+                   my $eq1 = compare($_, $file2) == 0;
+                   my $eq2 = 1;
                    if (-e $xs_file1 && -e $xs_file2) {
-                       return if compare($_, $file2) == 0 &&
-                                 compare($xs_file1, $xs_file2) == 0;
-                   } else {
-                       return if compare($_, $file2) == 0;
+                       $eq2 = compare($xs_file1, $xs_file2) == 0;
                    }
+                   return if $eq1 && $eq2;
                    my $version1 = eval {MM->parse_version($_)};
                    my $version2 = eval {MM->parse_version($file2)};
-                   push @wanted, $File::Find::name
-                       if defined $version1 &&
-                          defined $version2 &&
-                           $version1 eq $version2
+                   return unless
+                       defined $version1 &&
+                       defined $version2 &&
+                        $version1 eq $version2;
+                   push @wanted, $File::Find::name;
+                   push @diffs, [ "$File::Find::dir/$_", $file2 ] unless $eq1;
+                   push @diffs, [ "$File::Find::dir/$xs_file1", $xs_file2 ]
+                                                                  unless $eq2;
                } }, curdir);
-print map { $_, "\n" } sort @wanted;
+for (sort @wanted) {
+    print "$_\n";
+}
+exit unless $opts{d};
+for (sort { $a->[0] cmp $b->[0] } @diffs) {
+    print "\n";
+    system "diff -du '$_->[0]' '$_->[1]'";
+}