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parse_version doesn't always succeed.
[perl5.git] / Porting / cmpVERSION.pl
1 #!/usr/bin/perl -w
2
3 #
4 # cmpVERSION - compare two Perl source trees for modules
5 # that have identical version numbers but different contents.
6 #
7 # Original by slaven@rezic.de, modified by jhi.
8 #
9
10 use strict;
11
12 use ExtUtils::MakeMaker;
13 use File::Compare;
14 use File::Find;
15 use File::Spec::Functions qw(rel2abs abs2rel catfile catdir curdir);
16
17 for (@ARGV[0, 1]) {
18     die "$0: '$_' does not look like Perl directory\n"
19         unless -f catfile($_, "perl.h") && -d catdir($_, "Porting");
20 }
21
22 my $dir2 = rel2abs($ARGV[1]);
23 chdir $ARGV[0] or die "$0: chdir '$ARGV[0]' failed: $!\n";
24
25 # Files to skip from the check for one reason or another,
26 # usually because they pull in their version from some other file.
27 my %skip;
28 @skip{'./lib/Exporter/Heavy.pm'} = ();
29
30 my @wanted;
31 find(
32      sub { /\.pm$/ &&
33                ! exists $skip{$File::Find::name}
34                &&
35                do { my $file2 =
36                         catfile(catdir($dir2, $File::Find::dir), $_);
37                     (my $xs_file1 = $_)     =~ s/\.pm$/.xs/;
38                     (my $xs_file2 = $file2) =~ s/\.pm$/.xs/;
39                     if (-e $xs_file1 && -e $xs_file2) {
40                         return if compare($_, $file2) == 0 &&
41                                   compare($xs_file1, $xs_file2) == 0;
42                     } else {
43                         return if compare($_, $file2) == 0;
44                     }
45                     my $version1 = eval {MM->parse_version($_)};
46                     my $version2 = eval {MM->parse_version($file2)};
47                     push @wanted, $File::Find::name
48                         if defined $version1 &&
49                            defined $version2 &&
50                            $version1 eq $version2
51                 } }, curdir);
52 print map { $_, "\n" } sort @wanted;
53