1 #!/home/james/.guix-profile/bin/perl
2 # Uses symlinks to merge the files contained in a set of vcs
3 # checkouts to into a single directory. Keeps track of when files are
4 # removed from the merged directories and removes the symlinks.
6 # Only merges files that match the specified pattern.
8 # Note that the directories given to merge should be paths that will work
9 # for symlink targets from the destination directory (so either full paths,
10 # or they should be right inside the destination directory).
12 # Note that other files in the destination directory will be left as-is.
14 # Copyright 2006 by Joey Hess, licensed under the GPL.
17 die "usage: dircombine include-pattern dest dir1 [dir2 ...]\n";
23 foreach my $dir (@ARGV) {
26 # Link in each thing from the dir.
27 opendir(DIR, $dir) || die "opendir: $!";
28 while ($_=readdir(DIR)) {
29 next if $_ eq '.' || $_ eq '..' || $_ eq 'known' || $_ eq '.svn' || $_ eq '.git' || $_ eq '.gitignore' || $_ eq '_darcs' || $_ eq '.fslckout' || $_ eq '.fossil-settings' || $_ eq '.ssh' || $_ eq '.config';
30 next unless /$pattern/;
34 if (! -l "$dest/$_" && -e "$dest/$_") {
35 print STDERR "$_ in $dir is also in $dest\n";
37 elsif (! -l "$dest/$_") {
38 system("ln", "$^O" ne "aix" ? "-svf" : "-sf", "$dir/$_", $dest);
43 # Remove anything that was previously linked in but is not in the
45 if (-e "$dir/known") {
46 open(KNOWN, "$dir/known") || die "open $dir/known: $!";
50 system("rm", "$^O" ne "aix" ? "-vf" : "-f", "$dest/$_");
56 # Save state for next time.
57 open(KNOWN, ">$dir/known") || die "write $dir/known: $!";
58 foreach my $file (sort keys %known) {
59 print KNOWN "$file\n";