4 # cmpVERSION - compare the current Perl source tree and a given tag
5 # for modules that have identical version numbers but different contents.
7 # with -d option, output the diffs too
8 # with -x option, exclude dual-life modules (after all, there are tools
9 # like core-cpan-diff that can already deal with them)
10 # With this option, one of the directories must be '.'.
12 # Original by slaven@rezic.de, modified by jhi and matt.w.johnson@gmail.com.
17 use ExtUtils::MakeMaker;
20 use File::Spec::Functions qw(rel2abs abs2rel catfile catdir curdir);
28 usage: $0 [ -d -x ] source_dir tag_to_compare
33 getopts('dx', \%opts) or usage;
36 my ($source_dir, $tag_to_compare) = @ARGV[0,1];
37 die "$0: '$source_dir' does not look like a Perl directory\n"
38 unless -f catfile($source_dir, "perl.h") && -d catdir($source_dir, "Porting");
39 die "$0: '$source_dir' is a Perl directory but does not look like Git working directory\n"
40 unless -d catdir($source_dir, ".git");
42 my $tag_exists = `git --no-pager tag -l $tag_to_compare 2>/dev/null`;
45 die "$0: '$tag_to_compare' is not a known Git tag\n"
46 unless $tag_exists eq $tag_to_compare;
50 die "With -x, the directory must be '.'\n"
51 unless $source_dir eq '.';
52 for my $m (grep $Maintainers::Modules{$_}{CPAN},
53 keys %Maintainers::Modules)
56 $dual_files{$_} = 1 for Maintainers::get_module_files($m);
60 chdir $source_dir or die "$0: chdir '$source_dir' failed: $!\n";
62 # Files to skip from the check for one reason or another,
63 # usually because they pull in their version from some other file.
67 'lib/Config.pm', # no version number but contents will vary
68 'lib/Exporter/Heavy.pm',
71 my $skip_dirs = qr|^t/lib|;
73 my @all_diffs = `git --no-pager diff --name-only $tag_to_compare`;
76 my @module_diffs = grep {
78 $this_dir = $1 if m/^(.*)\//;
80 (!defined($this_dir) || ($this_dir !~ $skip_dirs)) &&
82 !exists $dual_files{$_}
85 my (@output_files, @output_diffs);
87 foreach my $pm_file (@module_diffs) {
88 (my $xs_file = $pm_file) =~ s/\.pm$/.xs/;
89 my $pm_eq = compare_git_file($pm_file, $tag_to_compare);
90 next unless defined $pm_eq;
93 $xs_eq = compare_git_file($xs_file, $tag_to_compare);
94 next unless defined $xs_eq;
96 next if ($pm_eq && $xs_eq);
97 my $pm_version = eval {MM->parse_version($pm_file)};
98 my $orig_pm_content = get_file_from_git($pm_file, $tag_to_compare);
99 my $orig_pm_version = eval {MM->parse_version(\$orig_pm_content)};
100 next if ( ! defined $pm_version || ! defined $orig_pm_version );
101 next if ( $pm_version eq 'undef' || $orig_pm_version eq 'undef' ); # sigh
102 next if $pm_version ne $orig_pm_version;
103 push @output_files, $pm_file;
104 push @output_diffs, $pm_file unless $pm_eq;
105 push @output_diffs, $xs_file unless $xs_eq;
108 sub compare_git_file {
109 my ($file, $tag) = @_;
110 open(my $orig_fh, "-|", "git --no-pager show $tag:$file 2>/dev/null");
111 return undef if eof($orig_fh);
112 my $is_eq = compare($file, $orig_fh) == 0;
117 sub get_file_from_git {
118 my ($file, $tag) = @_;
120 my $file_content = `git --no-pager show $tag:$file 2>/dev/null`;
121 return $file_content;
124 for (sort @output_files) {
128 exit unless $opts{d};
130 for (sort @output_diffs) {
132 system "git --no-pager diff $tag_to_compare '$_'";