package Archive::Tar::Constant; BEGIN { require Exporter; $VERSION = '2.26'; @ISA = qw[Exporter]; require Time::Local if $^O eq "MacOS"; } @EXPORT = Archive::Tar::Constant->_list_consts( __PACKAGE__ ); use strict; use warnings; use constant FILE => 0; use constant HARDLINK => 1; use constant SYMLINK => 2; use constant CHARDEV => 3; use constant BLOCKDEV => 4; use constant DIR => 5; use constant FIFO => 6; use constant SOCKET => 8; use constant UNKNOWN => 9; use constant LONGLINK => 'L'; use constant LABEL => 'V'; use constant BUFFER => 4096; use constant HEAD => 512; use constant BLOCK => 512; use constant COMPRESS_GZIP => 9; use constant COMPRESS_BZIP => 'bzip2'; use constant BLOCK_SIZE => sub { my $n = int($_[0]/BLOCK); $n++ if $_[0] % BLOCK; $n * BLOCK }; use constant TAR_PAD => sub { my $x = shift || return; return "\0" x (BLOCK - ($x % BLOCK) ) }; use constant TAR_END => "\0" x BLOCK; use constant READ_ONLY => sub { shift() ? 'rb' : 'r' }; use constant WRITE_ONLY => sub { $_[0] ? 'wb' . shift : 'w' }; use constant MODE_READ => sub { $_[0] =~ /^r/ ? 1 : 0 }; # Pointless assignment to make -w shut up my $getpwuid; $getpwuid = 'unknown' unless eval { my $f = getpwuid (0); }; my $getgrgid; $getgrgid = 'unknown' unless eval { my $f = getgrgid (0); }; use constant UNAME => sub { $getpwuid || scalar getpwuid( shift() ) || '' }; use constant GNAME => sub { $getgrgid || scalar getgrgid( shift() ) || '' }; use constant UID => $>; use constant GID => (split ' ', $) )[0]; use constant MODE => do { 0666 & (0777 & ~umask) }; use constant STRIP_MODE => sub { shift() & 0777 }; use constant CHECK_SUM => " "; use constant UNPACK => 'a100 a8 a8 a8 a12 a12 a8 a1 a100 A6 a2 a32 a32 a8 a8 a155 x12'; # cdrake - size must be a12 - not A12 - or else screws up huge file sizes (>8gb) use constant PACK => 'a100 a8 a8 a8 a12 a12 A8 a1 a100 a6 a2 a32 a32 a8 a8 a155 x12'; use constant NAME_LENGTH => 100; use constant PREFIX_LENGTH => 155; use constant TIME_OFFSET => ($^O eq "MacOS") ? Time::Local::timelocal(0,0,0,1,0,70) : 0; use constant MAGIC => "ustar"; use constant TAR_VERSION => "00"; use constant LONGLINK_NAME => '././@LongLink'; use constant PAX_HEADER => 'pax_global_header'; ### allow ZLIB to be turned off using ENV: DEBUG only use constant ZLIB => do { !$ENV{'PERL5_AT_NO_ZLIB'} and eval { require IO::Zlib }; $ENV{'PERL5_AT_NO_ZLIB'} || $@ ? 0 : 1 }; ### allow BZIP to be turned off using ENV: DEBUG only use constant BZIP => do { !$ENV{'PERL5_AT_NO_BZIP'} and eval { require IO::Uncompress::Bunzip2; require IO::Compress::Bzip2; }; $ENV{'PERL5_AT_NO_BZIP'} || $@ ? 0 : 1 }; use constant GZIP_MAGIC_NUM => qr/^(?:\037\213|\037\235)/; use constant BZIP_MAGIC_NUM => qr/^BZh\d/; use constant CAN_CHOWN => sub { ($> == 0 and $^O ne "MacOS" and $^O ne "MSWin32") }; use constant CAN_READLINK => ($^O ne 'MSWin32' and $^O !~ /RISC(?:[ _])?OS/i and $^O ne 'VMS'); use constant ON_UNIX => ($^O ne 'MSWin32' and $^O ne 'MacOS' and $^O ne 'VMS'); use constant ON_VMS => $^O eq 'VMS'; sub _list_consts { my $class = shift; my $pkg = shift; return unless defined $pkg; # some joker might use '0' as a pkg... my @rv; { no strict 'refs'; my $stash = $pkg . '::'; for my $name (sort keys %$stash ) { ### is it a subentry? my $sub = $pkg->can( $name ); next unless defined $sub; next unless defined prototype($sub) and not length prototype($sub); push @rv, $name; } } return sort @rv; } 1;