1#!/usr/bin/perl -w 2 3use strict; 4 5# Check whether there are naming conflicts when names are truncated to 6# the DOSish case-ignoring 8.3 format, plus other portability no-nos. 7 8# The "8.3 rule" is loose: "if reducing the directory entry names 9# within one directory to lowercase and 8.3-truncated causes 10# conflicts, that's a bad thing". So the rule is NOT the strict 11# "no filename shall be longer than eight and a suffix if present 12# not longer than three". 13 14# The 8-level depth rule is for older VMS systems that likely won't 15# even be able to unpack the tarball if more than eight levels 16# (including the top of the source tree) are present. 17 18my %seen; 19my $maxl = 30; # make up a limit for a maximum filename length 20 21sub eight_dot_three { 22 return () if $seen{$_[0]}++; 23 my ($dir, $base, $ext) = ($_[0] =~ m{^(?:(.+)/)?([^/.]*)(?:\.([^/.]+))?$}); 24 my $file = $base . ( defined $ext ? ".$ext" : "" ); 25 $base = substr($base, 0, 8); 26 $ext = substr($ext, 0, 3) if defined $ext; 27 if (defined $dir && $dir =~ /\./) { 28 print "directory name contains '.': $dir\n"; 29 } 30 if ($base eq "") { 31 print "filename starts with dot: $_[0]\n"; 32 } 33 if ($file =~ /[^A-Za-z0-9\._-]/) { 34 print "filename contains non-portable characters: $_[0]\n"; 35 } 36 if (length $file > $maxl) { 37 print "filename longer than $maxl characters: $file\n"; 38 } 39 if (defined $dir) { 40 return ($dir, defined $ext ? "$dir/$base.$ext" : "$dir/$base"); 41 } else { 42 return ('.', defined $ext ? "$base.$ext" : $base); 43 } 44} 45 46my %dir; 47 48if (open(MANIFEST, '<', 'MANIFEST')) { 49 while (<MANIFEST>) { 50 chomp; 51 s/\s.+//; 52 unless (-f) { 53 print "missing: $_\n"; 54 next; 55 } 56 if (tr/././ > 1) { 57 print "more than one dot: $_\n"; 58 next; 59 } 60 if ((my $slashes = $_ =~ tr|\/|\/|) > 7) { 61 print "more than eight levels deep: $_\n"; 62 next; 63 } 64 while (m!/|\z!g) { 65 my ($dir, $edt) = eight_dot_three("$`"); 66 next unless defined $dir; 67 ($dir, $edt) = map { lc } ($dir, $edt); 68 push @{$dir{$dir}->{$edt}}, $_; 69 } 70 } 71} else { 72 die "$0: MANIFEST: $!\n"; 73} 74 75for my $dir (sort keys %dir) { 76 for my $edt (keys %{$dir{$dir}}) { 77 my @files = @{$dir{$dir}{$edt}}; 78 if (@files > 1) { 79 print "conflict on filename $edt:\n", map " $_\n", @files; 80 } 81 } 82} 83