| 1 | #!perl |
| 2 | |
| 3 | # Initialisation code and subroutines shared between installperl and installman |
| 4 | # Probably installhtml needs to join the club. |
| 5 | |
| 6 | use strict; |
| 7 | use vars qw($Is_VMS $Is_W32 $Is_OS2 $Is_Cygwin $Is_Darwin $Is_NetWare |
| 8 | %opts $packlist); |
| 9 | use subs qw(unlink link chmod); |
| 10 | require File::Path; |
| 11 | |
| 12 | BEGIN { |
| 13 | require Config; |
| 14 | if ($Config::Config{userelocatableinc}) { |
| 15 | # This might be a considered a hack. Need to get information about the |
| 16 | # configuration from Config.pm *before* Config.pm expands any .../ |
| 17 | # prefixes. |
| 18 | # |
| 19 | # So we set $^X to pretend that we're the already installed perl, so |
| 20 | # Config.pm does its ... expansion off that location. |
| 21 | |
| 22 | my $location = $Config::Config{initialinstalllocation}; |
| 23 | die <<'OS' unless defined $location; |
| 24 | $Config{initialinstalllocation} is not defined - can't install a relocatable |
| 25 | perl without this. |
| 26 | OS |
| 27 | $^X = "$location/perl"; |
| 28 | # And then remove all trace of ever having loaded Config.pm, so that |
| 29 | # it will reload with the revised $^X |
| 30 | undef %Config::; |
| 31 | delete $INC{"Config.pm"}; |
| 32 | delete $INC{"Config_heavy.pl"}; |
| 33 | delete $INC{"Config_git.pl"}; |
| 34 | # You never saw us. We weren't here. |
| 35 | |
| 36 | require Config; |
| 37 | } |
| 38 | Config->import; |
| 39 | } |
| 40 | |
| 41 | if ($Config{d_umask}) { |
| 42 | umask(022); # umasks like 077 aren't that useful for installations |
| 43 | } |
| 44 | |
| 45 | $Is_VMS = $^O eq 'VMS'; |
| 46 | $Is_W32 = $^O eq 'MSWin32'; |
| 47 | $Is_OS2 = $^O eq 'os2'; |
| 48 | $Is_Cygwin = $^O eq 'cygwin'; |
| 49 | $Is_Darwin = $^O eq 'darwin'; |
| 50 | $Is_NetWare = $Config{osname} eq 'NetWare'; |
| 51 | |
| 52 | sub unlink { |
| 53 | my(@names) = @_; |
| 54 | my($cnt) = 0; |
| 55 | |
| 56 | return scalar(@names) if $Is_VMS; |
| 57 | |
| 58 | foreach my $name (@names) { |
| 59 | next unless -e $name; |
| 60 | chmod 0777, $name if ($Is_OS2 || $Is_W32 || $Is_Cygwin || $Is_NetWare); |
| 61 | print " unlink $name\n" if $opts{verbose}; |
| 62 | ( CORE::unlink($name) and ++$cnt |
| 63 | or warn "Couldn't unlink $name: $!\n" ) unless $opts{notify}; |
| 64 | } |
| 65 | return $cnt; |
| 66 | } |
| 67 | |
| 68 | sub link { |
| 69 | my($from,$to) = @_; |
| 70 | my($success) = 0; |
| 71 | |
| 72 | my $xfrom = $from; |
| 73 | $xfrom =~ s/^\Q$opts{destdir}\E// if $opts{destdir}; |
| 74 | my $xto = $to; |
| 75 | $xto =~ s/^\Q$opts{destdir}\E// if $opts{destdir}; |
| 76 | print $opts{verbose} ? " ln $xfrom $xto\n" : " $xto\n" |
| 77 | unless $opts{silent}; |
| 78 | eval { |
| 79 | CORE::link($from, $to) |
| 80 | ? $success++ |
| 81 | : ($from =~ m#^/afs/# || $to =~ m#^/afs/#) |
| 82 | ? die "AFS" # okay inside eval {} |
| 83 | : die "Couldn't link $from to $to: $!\n" |
| 84 | unless $opts{notify}; |
| 85 | $packlist->{$xto} = { from => $xfrom, type => 'link' }; |
| 86 | }; |
| 87 | if ($@) { |
| 88 | warn "Replacing link() with File::Copy::copy(): $@"; |
| 89 | print $opts{verbose} ? " cp $from $xto\n" : " $xto\n" |
| 90 | unless $opts{silent}; |
| 91 | print " creating new version of $xto\n" |
| 92 | if $Is_VMS and -e $to and !$opts{silent}; |
| 93 | unless ($opts{notify} or File::Copy::copy($from, $to) and ++$success) { |
| 94 | # Might have been that F::C::c can't overwrite the target |
| 95 | warn "Couldn't copy $from to $to: $!\n" |
| 96 | unless -f $to and (chmod(0666, $to), unlink $to) |
| 97 | and File::Copy::copy($from, $to) and ++$success; |
| 98 | } |
| 99 | $packlist->{$xto} = { type => 'file' }; |
| 100 | } |
| 101 | $success; |
| 102 | } |
| 103 | |
| 104 | sub chmod { |
| 105 | my($mode,$name) = @_; |
| 106 | |
| 107 | return if ($^O eq 'dos'); |
| 108 | printf " chmod %o %s\n", $mode, $name if $opts{verbose}; |
| 109 | CORE::chmod($mode,$name) |
| 110 | || warn sprintf("Couldn't chmod %o %s: $!\n", $mode, $name) |
| 111 | unless $opts{notify}; |
| 112 | } |
| 113 | |
| 114 | sub samepath { |
| 115 | my($p1, $p2) = @_; |
| 116 | |
| 117 | return (lc($p1) eq lc($p2)) if ($Is_W32 || $Is_NetWare); |
| 118 | |
| 119 | return 1 |
| 120 | if $p1 eq $p2; |
| 121 | |
| 122 | my ($dev1, $ino1) = stat $p1; |
| 123 | return 0 |
| 124 | unless defined $dev1; |
| 125 | my ($dev2, $ino2) = stat $p2; |
| 126 | |
| 127 | return $dev1 == $dev2 && $ino1 == $ino2; |
| 128 | } |
| 129 | |
| 130 | sub safe_rename { |
| 131 | my($from,$to) = @_; |
| 132 | if (-f $to and not unlink($to)) { |
| 133 | my($i); |
| 134 | for ($i = 1; $i < 50; $i++) { |
| 135 | last if rename($to, "$to.$i"); |
| 136 | } |
| 137 | warn("Cannot rename to '$to.$i': $!"), return 0 |
| 138 | if $i >= 50; # Give up! |
| 139 | } |
| 140 | link($from,$to) || return 0; |
| 141 | unlink($from); |
| 142 | } |
| 143 | |
| 144 | sub mkpath { |
| 145 | File::Path::mkpath(shift , $opts{verbose}, 0777) unless $opts{notify}; |
| 146 | } |
| 147 | |
| 148 | 1; |