-#!/usr/local/bin/perl
+#!/usr/bin/perl
-# Check whether there are naming conflicts when names are truncated
-# to the DOSish case-ignoring 8.3 format
+# Check whether there are naming conflicts when names are truncated to
+# the DOSish case-ignoring 8.3 format, plus other portability no-nos.
+
+# The "8.3 rule" is loose: "if reducing the directory entry names
+# within one directory to lowercase and 8.3-truncated causes
+# conflicts, that's a bad thing". So the rule is NOT the strict
+# "no filename shall be longer than eight and a suffix if present
+# not longer than three".
+
+# TODO: this doesn't actually check for *directory entries*, what this
+# does is to check for *MANIFEST entries*, which are only files, not
+# directories. In other words, a 8.3 conflict between a directory
+# "abcdefghx" and a file "abcdefghy" wouldn't be noticed-- or even for
+# a directory "abcdefgh" and a file "abcdefghy".
sub eight_dot_three {
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 =~ /\./) {
+ warn "$dir: directory name contains '.'\n";
+ }
+ if ($file =~ /[^A-Za-z0-9\._-]/) {
+ warn "$file: filename contains non-portable characters\n";
+ }
+ if (length $file > 30) {
+ warn "$file: filename longer than 30 characters\n"; # make up a limit
+ }
if (defined $dir) {
return ($dir, defined $ext ? "$dir/$base.$ext" : "$dir/$base");
} else {