Add an offline mode

[code/myrepos.git] / mr

diff --git a/mr b/mr
index 3148a3f94fba74eb4a857642fbe5595e5db5d8f7..a58b52ba1a719b08208ee04fa01014e9535d41bf 100755 (executable)
--- a/mr
+++ b/mr
@@ -7,7 +7,7 @@
 mr - a Multiple Repository management tool
 
 =head1 SYNOPSIS
-
+/
 B<mr> [options] checkout
 
 B<mr> [options] update
@@ -28,6 +28,10 @@ B<mr> [options] config section ["parameter=[value]" ...]
 
 B<mr> [options] action [params ...]
 
+B<mr> [options] [online|offline]
+
+B<mr> [options] remember action [params ...]
+
 =head1 DESCRIPTION
 
 B<mr> is a Multiple Repository management tool. It can checkout, update, or
@@ -126,6 +130,24 @@ To see the built-in library of shell functions contained in mr:
 The ~/.mrconfig file is used by default. To use a different config file,
 use the -c option.
 
+=item offline
+
+Advises mr that it is in offline mode. Any commands that fail in
+offline mode will be remembered, and retried when mr is told it's online.
+
+=item online
+
+Advices mr that it is in online mode again. Commands that failed while in
+offline mode will be re-run.
+
+=item remember
+
+Remember a command, to be run later when mr re-enters online mode. This
+implicitly puts mr into offline mode. The command can be any regular mr
+command. This is useful when you know that a command will fail due to being
+offline, and so don't want to run it right now at all, but just remember
+to run it when you go back online.
+
 =item help
 
 Displays this help.
@@ -196,6 +218,11 @@ a good speedup in updates without loading the machine too much.
 
 =head1 FILES
 
+The ~/.mrlog file contains commands that mr has remembered to run later,
+due to being offline. You can delete or edit this file to remove commands,
+or even to add other commands for 'mr online' to run. If the file is
+present, mr assumes it is in offline mode.
+
 B<mr> is configured by .mrconfig files. It starts by reading the .mrconfig
 file in your home directory, and this can in turn chain load .mrconfig files
 from repositories.
@@ -511,6 +538,10 @@ sub action { #{{{
                        print STDERR "mr $action: failed ($ret)\n" if $verbose;
                        if ($ret >> 8 != 0) {
                                print STDERR "mr $action: command failed\n";
+                               if (-e "$ENV{HOME}/.mrlog" && $action ne 'remember') {
+                                       @ARGV=($action, @ARGV);
+                                       action("remember", $dir, $topdir, $subdir);
+                               }
                        }
                        elsif ($ret != 0) {
                                print STDERR "mr $action: command died ($ret)\n";
@@ -973,6 +1004,11 @@ sub dispatch { #{{{
        elsif ($action eq 'register') {
                register(@ARGV);
        }
+       elsif ($action eq 'remember') {
+               my @repos=selectrepos;
+               action($action, @{$repos[0]}) if @repos;
+               exit 0;
+       }
 
        if (!$jobs || $jobs > 1) {
                mrs($action, selectrepos());
@@ -987,7 +1023,7 @@ sub dispatch { #{{{
 sub help { #{{{
        exec($config{''}{DEFAULT}{help}) || die "exec: $!";
 } #}}}
-       
+
 sub config { #{{{
        if (@_ < 2) {
                die "mr config: not enough parameters\n";
@@ -1311,6 +1347,30 @@ help =
 list = true
 config = 
 
+online =
+       if [ -e ~/.mrlog ]; then
+               info "running offline commands"
+               mv -f ~/.mrlog ~/.mrlog.old
+               if ! sh ~/.mrlog.old; then
+                       error "offline commands failed; left in ~/.mrlog.old"
+               fi
+               rm -f ~/.mrlog.old
+       else
+               info "no offline commands to run"
+       fi
+offline =
+       touch ~/.mrlog
+       info "offline mode enabled"
+remember =
+       info "remembering command: 'mr $@'"
+       command="mr -d '$(pwd)'"
+       for w in "$@"; do
+               command="$command '$w'"
+       done
+       if [ ! -e ~/.mrlog ] || ! grep -q -F "$command" ~/.mrlog; then
+               echo "$command" >> ~/.mrlog
+       fi
+
 ed = echo "A horse is a horse, of course, of course.."
 T = echo "I pity the fool."
 right = echo "Not found."