Commit | Line | Data |
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39713df4 RGS |
1 | package Archive::Tar::Constant; |
2 | ||
3 | BEGIN { | |
4 | require Exporter; | |
5 | $VERSION= '0.02'; | |
6 | @ISA = qw[Exporter]; | |
7 | @EXPORT = qw[ | |
8 | FILE HARDLINK SYMLINK CHARDEV BLOCKDEV DIR FIFO SOCKET UNKNOWN | |
9 | BUFFER HEAD READ_ONLY WRITE_ONLY UNPACK PACK TIME_OFFSET ZLIB | |
10 | BLOCK_SIZE TAR_PAD TAR_END ON_UNIX BLOCK CAN_READLINK MAGIC | |
11 | TAR_VERSION UNAME GNAME CAN_CHOWN MODE CHECK_SUM UID GID | |
12 | GZIP_MAGIC_NUM MODE_READ LONGLINK LONGLINK_NAME PREFIX_LENGTH | |
13 | LABEL NAME_LENGTH STRIP_MODE | |
14 | ]; | |
15 | ||
16 | require Time::Local if $^O eq "MacOS"; | |
17 | } | |
18 | ||
19 | use constant FILE => 0; | |
20 | use constant HARDLINK => 1; | |
21 | use constant SYMLINK => 2; | |
22 | use constant CHARDEV => 3; | |
23 | use constant BLOCKDEV => 4; | |
24 | use constant DIR => 5; | |
25 | use constant FIFO => 6; | |
26 | use constant SOCKET => 8; | |
27 | use constant UNKNOWN => 9; | |
28 | use constant LONGLINK => 'L'; | |
29 | use constant LABEL => 'V'; | |
30 | ||
31 | use constant BUFFER => 4096; | |
32 | use constant HEAD => 512; | |
33 | use constant BLOCK => 512; | |
34 | ||
35 | use constant BLOCK_SIZE => sub { my $n = int($_[0]/BLOCK); $n++ if $_[0] % BLOCK; $n * BLOCK }; | |
36 | use constant TAR_PAD => sub { my $x = shift || return; return "\0" x (BLOCK - ($x % BLOCK) ) }; | |
37 | use constant TAR_END => "\0" x BLOCK; | |
38 | ||
39 | use constant READ_ONLY => sub { shift() ? 'rb' : 'r' }; | |
40 | use constant WRITE_ONLY => sub { $_[0] ? 'wb' . shift : 'w' }; | |
41 | use constant MODE_READ => sub { $_[0] =~ /^r/ ? 1 : 0 }; | |
42 | ||
3c4b39be | 43 | # Pointless assignment to make -w shut up |
39713df4 RGS |
44 | my $getpwuid; $getpwuid = 'unknown' unless eval { my $f = getpwuid (0); }; |
45 | my $getgrgid; $getgrgid = 'unknown' unless eval { my $f = getgrgid (0); }; | |
46 | use constant UNAME => sub { $getpwuid || scalar getpwuid( shift() ) }; | |
47 | use constant GNAME => sub { $getgrgid || scalar getgrgid( shift() ) }; | |
48 | use constant UID => $>; | |
49 | use constant GID => (split ' ', $) )[0]; | |
50 | ||
51 | use constant MODE => do { 0666 & (0777 & ~umask) }; | |
52 | use constant STRIP_MODE => sub { shift() & 0777 }; | |
53 | use constant CHECK_SUM => " "; | |
54 | ||
55 | use constant UNPACK => 'A100 A8 A8 A8 A12 A12 A8 A1 A100 A6 A2 A32 A32 A8 A8 A155 x12'; | |
56 | use constant PACK => 'a100 a8 a8 a8 a12 a12 A8 a1 a100 a6 a2 a32 a32 a8 a8 a155 x12'; | |
57 | use constant NAME_LENGTH => 100; | |
58 | use constant PREFIX_LENGTH => 155; | |
59 | ||
60 | use constant TIME_OFFSET => ($^O eq "MacOS") ? Time::Local::timelocal(0,0,0,1,0,70) : 0; | |
61 | use constant MAGIC => "ustar"; | |
62 | use constant TAR_VERSION => "00"; | |
63 | use constant LONGLINK_NAME => '././@LongLink'; | |
64 | ||
65 | use constant ZLIB => do { eval { require IO::Zlib }; $@ ? 0 : 1 }; | |
66 | use constant GZIP_MAGIC_NUM => qr/^(?:\037\213|\037\235)/; | |
67 | ||
68 | use constant CAN_CHOWN => do { ($> == 0 and $^O ne "MacOS" and $^O ne "MSWin32") }; | |
69 | use constant CAN_READLINK => ($^O ne 'MSWin32' and $^O !~ /RISC(?:[ _])?OS/i and $^O ne 'VMS'); | |
70 | use constant ON_UNIX => ($^O ne 'MSWin32' and $^O ne 'MacOS' and $^O ne 'VMS'); | |
71 | ||
72 | 1; |