76 lines
1.5 KiB
Perl
76 lines
1.5 KiB
Perl
my $symlink_farm = read_env('SYMLINK', 0);
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my $link_verbose = read_env('VERBOSE', 0);
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my $link_copy = read_env('COPYLINK', 0);
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sub read_env {
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my $env_var = shift;
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my $default = shift;
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if (exists($ENV{$env_var})) {
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return $ENV{$env_var};
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}
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# else
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return $default;
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}
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sub good_link ($$) {
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my ($src, $dest) = @_;
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my $dir_added = 0;
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if (! -e $dest) {
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# Check if the destination directory does exist
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my $ddir = $dest;
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$ddir =~ s#/?[^/]+$##g;
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if ($ddir eq "")
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{
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$ddir = ".";
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}
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if (! -d $ddir) # Create it if not
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{
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system("mkdir -p $ddir");
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$dir_added++;
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}
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# Link the files
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if ($symlink_farm) {
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print "Symlink: $dest => $src\n" if ($link_verbose >= 3);
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if (not symlink ($src, $dest)) {
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print STDERR "Symlink from $src to $dest failed: $!\n";
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}
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} elsif ($link_copy) {
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print "Copy: $dest => $src\n" if ($link_verbose >= 3);
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if (system("cp -ap $src $dest")) {
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my $err_num = $? >> 8;
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my $sig_num = $? & 127;
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print STDERR "Copy from $src to $dest failed: cp exited with error code $err_num, signal $sig_num\n";
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}
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} else {
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print "Hardlink: $dest => $src\n" if ($link_verbose >= 3);
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if (not link ($src, $dest)) {
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print STDERR "Link from $src to $dest failed: $!\n";
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}
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}
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}
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return $dir_added;
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}
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sub real_file ($) {
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my $link = shift;
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my ($dir, $to);
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while (-l $link) {
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$dir = $link;
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$dir =~ s#[^/]+/?$##;
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if ($to = readlink($link)) {
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$link = $dir . $to;
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} else {
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print STDERR "Can't readlink $link: $!\n";
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}
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}
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return $link;
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}
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1;
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