Improve description of the -s switch.

[p5sagit/p5-mst-13.2.git] / Porting / check83.pl

diff --git a/Porting/check83.pl b/Porting/check83.pl
index be6b982..eb02002 100644 (file)
--- a/Porting/check83.pl
+++ b/Porting/check83.pl
@@ -1,4 +1,6 @@
-#!/usr/bin/perl
+#!/usr/bin/perl -w
+
+use strict;
 
 # Check whether there are naming conflicts when names are truncated to
 # the DOSish case-ignoring 8.3 format, plus other portability no-nos.
@@ -10,21 +12,22 @@
 # not longer than three".
 
 my %seen;
+my $maxl = 30; # make up a limit for a maximum filename length
 
 sub eight_dot_three {
-    next if $seen{$_[0]}++;
-    my ($dir, $base, $ext) = ($_[0] =~ m!^(?:(.+)/)?([^/.]+)(?:\.([^/.]+))?$!);
+    return () if $seen{$_[0]}++;
+    my ($dir, $base, $ext) = ($_[0] =~ m{^(?:(.+)/)?([^/.]+)(?:\.([^/.]+))?$});
     my $file = $base . ( defined $ext ? ".$ext" : "" );
     $base = substr($base, 0, 8);
     $ext  = substr($ext,  0, 3) if defined $ext;
-    if ($dir =~ /\./)  {
+    if (defined $dir && $dir =~ /\./)  {
        print "directory name contains '.': $dir\n";
     }
     if ($file =~ /[^A-Za-z0-9\._-]/) {
        print "filename contains non-portable characters: $_[0]\n";
     }
-    if (length $file > 30) {
-       print "filename longer than 30 characters: $_[0]\n"; # make up a limit
+    if (length $file > $maxl) {
+       print "filename longer than $maxl characters: $file\n";
     }
     if (defined $dir) {
        return ($dir, defined $ext ? "$dir/$base.$ext" : "$dir/$base");
@@ -49,6 +52,7 @@ if (open(MANIFEST, "MANIFEST")) {
        }
        while (m!/|\z!g) {
            my ($dir, $edt) = eight_dot_three($`);
+           next unless defined $dir;
            ($dir, $edt) = map { lc } ($dir, $edt);
            push @{$dir{$dir}->{$edt}}, $_;
        }