Added fixups hook, which can be used to run a command after a repository is checked...

[code/myrepos.git] / mr

diff --git a/mr b/mr
index 6df8cd72949a3447f103ec0b1f228f1339018cde..03cfdf351755dbbc9125517827ad47f4b3742701 100755 (executable)
--- a/mr
+++ b/mr
@@ -370,6 +370,13 @@ The "lib" parameter can specify some shell code that will be run before each
 command, this can be a useful way to define shell functions for other commands
 to use.
 
+=item fixups
+
+If the "fixups" parameter is set, its command is run whenever a repository
+is checked out, or updated. This provides an easy way to do things
+like permissions fixups, or other tweaks to the repository content,
+whenever the repository is changed.
+
 =back
 
 When looking for a command to run for a given action, mr first looks for
@@ -524,6 +531,7 @@ sub action {
        my $lib=exists $config{$topdir}{$subdir}{lib} ?
                       $config{$topdir}{$subdir}{lib}."\n" : "";
        my $is_checkout=($action eq 'checkout');
+       my $is_update=($action =~ /update/);
 
        $ENV{MR_REPO}=$dir;
 
@@ -537,7 +545,7 @@ sub action {
                        $dir=~s/^(.*)\/[^\/]+\/?$/$1/;
                }
        }
-       elsif ($action =~ /update/) {
+       elsif ($is_update) {
                if (! -d $dir) {
                        return action("checkout", $dir, $topdir, $subdir);
                }
@@ -628,16 +636,46 @@ sub action {
                        return FAILED;
                }
                else {
-                       if ($action eq 'checkout' && ! -d $dir) {
+                       if ($is_checkout && ! -d $dir) {
                                print STDERR "mr $action: $dir missing after checkout\n";;
                                return FAILED;
                        }
 
+                       if (($is_checkout || $is_update)) {
+                               my $ret=hook("fixups", $topdir, $subdir);
+                               return $ret if $ret != OK;
+                       }
+
                        return OK;
                }
        }
 }
 
+sub hook {
+       my ($hook, $topdir, $subdir) = @_;
+
+       my $command=$config{$topdir}{$subdir}{$hook};
+       return OK unless defined $command;
+       my $lib=exists $config{$topdir}{$subdir}{lib} ?
+                      $config{$topdir}{$subdir}{lib}."\n" : "";
+       my $shell="set -e;".$lib.
+               "my_hook(){ $command\n }; my_hook";
+       print "mr $hook: running >>$shell<<\n" if $verbose;
+       my $ret=system($shell);
+       if ($ret != 0) {
+               if (($? & 127) == 2) {
+                       print STDERR "mr $hook: interrupted\n";
+                       return ABORT;
+               }
+               elsif ($? & 127) {
+                       print STDERR "mr $hook: received signal ".($? & 127)."\n";
+                       return ABORT;
+               }
+       }
+
+       return OK;
+}
+
 # run actions on multiple repos, in parallel
 sub mrs {
        my $action=shift;