| 1 | # NOTE: Derived from ../../lib/Storable.pm. |
| 2 | # Changes made here will be lost when autosplit is run again. |
| 3 | # See AutoSplit.pm. |
| 4 | package Storable; |
| 5 | |
| 6 | #line 108 "../../lib/Storable.pm (autosplit into ../../lib/auto/Storable/read_magic.al)" |
| 7 | sub read_magic { |
| 8 | my $header = shift; |
| 9 | return unless defined $header and length $header > 11; |
| 10 | my $result; |
| 11 | if ($header =~ s/^perl-store//) { |
| 12 | die "Can't deal with version 0 headers"; |
| 13 | } elsif ($header =~ s/^pst0//) { |
| 14 | $result->{file} = 1; |
| 15 | } |
| 16 | # Assume it's a string. |
| 17 | my ($major, $minor, $bytelen) = unpack "C3", $header; |
| 18 | |
| 19 | my $net_order = $major & 1; |
| 20 | $major >>= 1; |
| 21 | @$result{qw(major minor netorder)} = ($major, $minor, $net_order); |
| 22 | |
| 23 | return $result if $net_order; |
| 24 | |
| 25 | # I assume that it is rare to find v1 files, so this is an intentionally |
| 26 | # inefficient way of doing it, to make the rest of the code constant. |
| 27 | if ($major < 2) { |
| 28 | delete $result->{minor}; |
| 29 | $header = '.' . $header; |
| 30 | $bytelen = $minor; |
| 31 | } |
| 32 | |
| 33 | @$result{qw(byteorder intsize longsize ptrsize)} = |
| 34 | unpack "x3 A$bytelen C3", $header; |
| 35 | |
| 36 | if ($major >= 2 and $minor >= 2) { |
| 37 | $result->{nvsize} = unpack "x6 x$bytelen C", $header; |
| 38 | } |
| 39 | $result; |
| 40 | } |
| 41 | |
| 42 | # end of Storable::read_magic |
| 43 | 1; |