embed.fnc: Mark unlnk as Core only

[perl5.git] / Porting / check83.pl

diff --git a/Porting/check83.pl b/Porting/check83.pl
old mode 100644 (file)
new mode 100755 (executable)
index 5851d9f..fbe5655
--- 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.
@@ -9,25 +11,30 @@
 # "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".
+# The 8-level depth rule is for older VMS systems that likely won't
+# even be able to unpack the tarball if more than eight levels 
+# (including the top of the source tree) are present.
+
+my %seen;
+my $maxl = 30; # make up a limit for a maximum filename length
 
 sub eight_dot_three {
-    my ($dir, $base, $ext) = ($_[0] =~ m!^(?:(.+)/)?([^/.]+)(?:\.([^/.]+))?$!);
-    my $file = $base . defined $ext ? ".$ext" : "";
+    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 =~ /\./)  {
-       warn "$dir: directory name contains '.'\n";
+    if (defined $dir && $dir =~ /\./)  {
+       print "directory name contains '.': $dir\n";
+    }
+    if ($base eq "") {
+       print "filename starts with dot: $_[0]\n";
     }
     if ($file =~ /[^A-Za-z0-9\._-]/) {
-       warn "$file: filename contains non-portable characters\n";
+       print "filename contains non-portable characters: $_[0]\n";
     }
-    if (length $file > 30) {
-       warn "$file: filename longer than 30 characters\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");
@@ -38,21 +45,28 @@ sub eight_dot_three {
 
 my %dir;
 
-if (open(MANIFEST, "MANIFEST")) {
+if (open(MANIFEST, '<', 'MANIFEST')) {
     while (<MANIFEST>) {
        chomp;
        s/\s.+//;
        unless (-f) {
-           warn "$_: missing\n";
+           print "missing: $_\n";
            next;
        }
        if (tr/././ > 1) {
-           print "$_: more than one dot\n";
+           print "more than one dot: $_\n";
            next;
        }
-       my ($dir, $edt) = eight_dot_three($_);
-       ($dir, $edt) = map { lc } ($dir, $edt);
-       push @{$dir{$dir}->{$edt}}, $_;
+       if ((my $slashes = $_ =~ tr|\/|\/|) > 7) {
+           print "more than eight levels deep: $_\n";
+           next;
+       }
+       while (m!/|\z!g) {
+           my ($dir, $edt) = eight_dot_three("$`");
+           next unless defined $dir;
+           ($dir, $edt) = map { lc } ($dir, $edt);
+           push @{$dir{$dir}->{$edt}}, $_;
+       }
     }
 } else {
     die "$0: MANIFEST: $!\n";
@@ -60,9 +74,9 @@ if (open(MANIFEST, "MANIFEST")) {
 
 for my $dir (sort keys %dir) {
     for my $edt (keys %{$dir{$dir}}) {
-       my @files = @{$dir{$dir}->{$edt}};
+       my @files = @{$dir{$dir}{$edt}};
        if (@files > 1) {
-           print "@files: directory $dir conflict $edt\n";
+           print "conflict on filename $edt:\n", map "    $_\n", @files;
        }
     }
 }