Merge commit 'madduck/master'

[code/myrepos.git] / mr

diff --git a/mr b/mr
index 3cc603f6c3fba08a3007afc2e8139c63238a74a3..0e14168e10a3d965d7b9054b742b2870e404df17 100755 (executable)
--- a/mr
+++ b/mr
@@ -1,5 +1,7 @@
 #!/usr/bin/perl
 
 #!/usr/bin/perl
 

+#man{{{
+

 =head1 NAME
 
 mr - a Multiple Repository management tool
 =head1 NAME
 
 mr - a Multiple Repository management tool


@@ -20,24 +22,24 @@ B<mr> [options] log
 
 B<mr> [options] register [repository]
 
 
 B<mr> [options] register [repository]
 

-B<mr> [options] config section [parameter=[value] ...]
+B<mr> [options] config section ["parameter=[value]" ...]

 
 B<mr> [options] action [params ...]
 
 =head1 DESCRIPTION
 
 
 B<mr> [options] action [params ...]
 
 =head1 DESCRIPTION
 

-B<mr> is a Multiple Repository management tool. It
-can checkout, update, or perform other actions on
-a set of repositories as if they were one combined respository. It
-supports any combination of subversion, git, cvs, and bzr repositories, 
-and support for other revision control systems can easily be added.
+B<mr> is a Multiple Repository management tool. It can checkout, update, or
+perform other actions on a set of repositories as if they were one combined
+respository. It supports any combination of subversion, git, cvs, mecurial,
+bzr and darcs repositories, and support for other revision control systems can
+easily be added.

 
 

-B<mr> cds into and operates on all registered repsitories at or below your
+B<mr> cds into and operates on all registered repositories at or below your

 working directory. Or, if you are in a subdirectory of a repository that
 contains no other registered repositories, it will stay in that directory,
 and work on only that repository,
 
 working directory. Or, if you are in a subdirectory of a repository that
 contains no other registered repositories, it will stay in that directory,
 and work on only that repository,
 

-The predefined commands should be fairly familiar to users of any revision
+These predefined commands should be fairly familiar to users of any revision

 control system:
 
 =over 4
 control system:
 
 =over 4


@@ -72,19 +74,28 @@ Show a diff of uncommitted changes.
 
 Show the commit log.
 
 
 Show the commit log.
 

+=back
+
+These commands are also available:
+
+=over 4
+

 =item list (or ls)
 
 List the repositories that mr will act on.
 
 =item register
 
 =item list (or ls)
 
 List the repositories that mr will act on.
 
 =item register
 

-Register an existing repository in the mrconfig file. By default, the
-epository in the current directory is registered, or you can specify a
+Register an existing repository in a mrconfig file. By default, the
+repository in the current directory is registered, or you can specify a

 directory to register.
 
 directory to register.
 

+The mrconfig file that is modified is chosen by either the -c option, or by
+looking for the closest known one at or below the current directory.
+

 =item config
 
 =item config
 

-Adds, modifies, removes, or prints a value from the mrconfig file. The next
+Adds, modifies, removes, or prints a value from a mrconfig file. The next

 parameter is the name of the section the value is in. To add or modify
 values, use one or more instances of "parameter=value". Use "parameter=" to
 remove a parameter. Use just "parameter" to get the value of a parameter.
 parameter is the name of the section the value is in. To add or modify
 values, use one or more instances of "parameter=value". Use "parameter=" to
 remove a parameter. Use just "parameter" to get the value of a parameter.


@@ -97,6 +108,13 @@ To show the command that mr uses to update the repository in src/foo:
 
   mr config src/foo update
 
 
   mr config src/foo update
 

+To see the built-in library of shell functions contained in mr:
+
+  mr config DEFAULT lib
+
+The ~/.mrconfig file is used by default. To use a different config file,
+use the -c option.
+

 =item help
 
 Displays this help.
 =item help
 
 Displays this help.


@@ -123,13 +141,28 @@ the current working directory.
 
 =item -c mrconfig
 
 
 =item -c mrconfig
 

-Use the specified mrconfig file, instead of looking for one in your home
-directory.
+Use the specified mrconfig file. The default is B<~/.mrconfig>

 
 =item -v
 
 Be verbose.
 
 
 =item -v
 
 Be verbose.
 

+=item -s
+
+Expand the statistics line displayed at the end to include information
+about exactly which repositories failed and were skipped, if any.
+
+=item -n
+
+Just operate on the repository for the current directory, do not 
+recurse into deeper repositories.
+
+=item -j number
+
+Run the specified number of jobs in parallel. This can greatly speed up
+operations such as updates. It is not recommended for interactive
+operations.
+

 =back
 
 =head1 FILES
 =back
 
 =head1 FILES


@@ -165,17 +198,20 @@ that contains the mrconfig file, but you can also choose to use absolute
 paths.
 
 Within a section, each parameter defines a shell command to run to handle a
 paths.
 
 Within a section, each parameter defines a shell command to run to handle a

-given action. mr contains default handlers for the "update", "status", and
-"commit" actions, so normally you only need to specify what to do for
-"checkout".
+given action. mr contains default handlers for "update", "status",
+"commit", and other standard actions. Normally you only need to specify what
+to do for "checkout".

 
 Note that these shell commands are run in a "set -e" shell
 environment, where any additional parameters you pass are available in
 "$@". The "checkout" command is run in the parent of the repository
 directory, since the repository isn't checked out yet. All other commands
 are run inside the repository, though not necessarily at the top of it.
 
 Note that these shell commands are run in a "set -e" shell
 environment, where any additional parameters you pass are available in
 "$@". The "checkout" command is run in the parent of the repository
 directory, since the repository isn't checked out yet. All other commands
 are run inside the repository, though not necessarily at the top of it.

+

 The "MR_REPO" environment variable is set to the path to the top of the
 The "MR_REPO" environment variable is set to the path to the top of the

-repository.
+repository. The "MR_CONFIG" environment variable is set to the .mrconfig file
+that defines the repo being acted on, or, if the repo is not yet in a config
+file, the .mrconfig file that should be modified to register the repo.

 
 A few parameters have special meanings:
 
 
 A few parameters have special meanings:
 


@@ -183,7 +219,7 @@ A few parameters have special meanings:
 
 =item skip
 
 
 =item skip
 

-If the "skip" parameter is set and its command returns nonzero, then B<mr>
+If the "skip" parameter is set and its command returns true, then B<mr>

 will skip acting on that repository. The command is passed the action
 name in $1.
 
 will skip acting on that repository. The command is passed the action
 name in $1.
 


@@ -193,22 +229,24 @@ mr is run by joey. The second uses the hours_since function
 been at least 12 hours since the last update.
 
   skip = test $(whoami) != joey
 been at least 12 hours since the last update.
 
   skip = test $(whoami) != joey

-  skip = [ "$1" = update ] && [ $(hours_since "$1") -lt 12 ]
+  skip = [ "$1" = update ] && ! hours_since "$1" 12
+
+=item order
+
+The "order" parameter can be used to override the default ordering of
+repositories. The default order value is 10. Use smaller values to make
+repositories be processed earlier, and larger values to make repositories
+be processed later.
+
+Note that if a repository is located in a subdirectory of another
+repository, ordering it to be processed earlier is not recommended.

 
 =item chain
 
 
 =item chain
 

-If the "chain" parameter is set and its command returns nonzero, then B<mr>
+If the "chain" parameter is set and its command returns true, then B<mr>

 will try to load a .mrconfig file from the root of the repository. (You
 should avoid chaining from repositories with untrusted committers.)
 
 will try to load a .mrconfig file from the root of the repository. (You
 should avoid chaining from repositories with untrusted committers.)
 

-=item deleted
-
-If the "deleted" parameter is set and its command returns nonzero, then
-B<mr> will treat the repository as deleted. It won't ever actually delete
-the repository, but it will warn if it sees the repsoitory's directory.
-This is useful when one mrconfig file is shared amoung multiple machines,
-to keep track of and remember to delete old repositories.
-

 =item lib
 
 The "lib" parameter can specify some shell code that will be run before each
 =item lib
 
 The "lib" parameter can specify some shell code that will be run before each


@@ -227,40 +265,72 @@ http://kitenet.net/~joey/code/mr/
 
 =cut
 
 
 =cut
 

+#}}}
+

 use warnings;
 use strict;
 use Getopt::Long;
 use Cwd qw(getcwd abs_path);
 use warnings;
 use strict;
 use Getopt::Long;
 use Cwd qw(getcwd abs_path);

+use POSIX "WNOHANG";
+use constant {
+       OK => 0,
+       FAILED => 1,
+       SKIPPED => 2,
+       ABORT => 3,
+};

 
 

-my $directory=getcwd();
-my $config="$ENV{HOME}/.mrconfig";
+$SIG{INT}=sub {
+       print STDERR "mr: interrupted\n";
+       exit 2;
+};
+
+$ENV{MR_CONFIG}="$ENV{HOME}/.mrconfig";
+my $config_overridden=0;

 my $verbose=0;
 my $verbose=0;

+my $stats=0;
+my $no_recurse=0;
+my $jobs=1;

 my %config;
 my %config;

+my %configfiles;

 my %knownactions;
 my %alias;
 my %knownactions;
 my %alias;

+my $directory=getcwd();

 
 Getopt::Long::Configure("no_permute");
 my $result=GetOptions(
        "d|directory=s" => sub { $directory=abs_path($_[1]) },
 
 Getopt::Long::Configure("no_permute");
 my $result=GetOptions(
        "d|directory=s" => sub { $directory=abs_path($_[1]) },

-       "c|config=s" => \$config,
-       "verbose" => \$verbose,
+       "c|config=s" => sub { $ENV{MR_CONFIG}=$_[1]; $config_overridden=1 },
+       "v|verbose" => \$verbose,
+       "s|stats" => \$stats,
+       "n|no-recurse" => \$no_recurse,
+       "j|jobs=i" => \$jobs,

 );
 if (! $result || @ARGV < 1) {
        die("Usage: mr [-d directory] action [params ...]\n".
            "(Use mr help for man page.)\n");
 
 }
 );
 if (! $result || @ARGV < 1) {
        die("Usage: mr [-d directory] action [params ...]\n".
            "(Use mr help for man page.)\n");
 
 }

+if (! defined $directory) {
+       die("mr: failed to determine working directory\n");
+}

 
 

-loadconfig(\*DATA);
-loadconfig($config);
-#use Data::Dumper;
-#print Dumper(\%config);
-
+# Make sure MR_CONFIG is an absolute path, but don't use abs_path since
+# the config file might be a symlink to elsewhere, and the directory it's
+# in is significant.
+if ($ENV{MR_CONFIG} !~ /^\//) {
+       $ENV{MR_CONFIG}=getcwd()."/".$ENV{MR_CONFIG};
+}
+# Try to set MR_PATH to the path to the program.

 eval {
        use FindBin qw($Bin $Script);
        $ENV{MR_PATH}=$Bin."/".$Script;
 };
 
 eval {
        use FindBin qw($Bin $Script);
        $ENV{MR_PATH}=$Bin."/".$Script;
 };
 

+loadconfig(\*DATA);
+loadconfig($ENV{MR_CONFIG});
+#use Data::Dumper;
+#print Dumper(\%config);
+

 # alias expansion and command stemming
 my $action=shift @ARGV;
 if (exists $alias{$action}) {
 # alias expansion and command stemming
 my $action=shift @ARGV;
 if (exists $alias{$action}) {


@@ -282,6 +352,7 @@ if (! exists $knownactions{$action}) {
        }
 }
 
        }
 }
 

+# commands that do not operate on all repos

 if ($action eq 'help') {
        exec($config{''}{DEFAULT}{$action}) || die "exec: $!";
 }
 if ($action eq 'help') {
        exec($config{''}{DEFAULT}{$action}) || die "exec: $!";
 }


@@ -291,8 +362,10 @@ elsif ($action eq 'config') {
        }
        my $section=shift;
        if ($section=~/^\//) {
        }
        my $section=shift;
        if ($section=~/^\//) {

-               # try to convert to a path relative to $config's dir
-               my ($dir)=$config=~/^(.*\/)[^\/]+$/;
+               # try to convert to a path relative to the config file
+               my ($dir)=$ENV{MR_CONFIG}=~/^(.*\/)[^\/]+$/;
+               $dir=abs_path($dir);
+               $dir.="/" unless $dir=~/\/$/;

                if ($section=~/^\Q$dir\E(.*)/) {
                        $section=$1;
                }
                if ($section=~/^\Q$dir\E(.*)/) {
                        $section=$1;
                }


@@ -309,6 +382,7 @@ elsif ($action eq 'config') {
                                    exists $config{$topdir}{$section}{$_}) {
                                        print $config{$topdir}{$section}{$_}."\n";
                                        $found=1;
                                    exists $config{$topdir}{$section}{$_}) {
                                        print $config{$topdir}{$section}{$_}."\n";
                                        $found=1;

+                                       last if $section eq 'DEFAULT';

                                }
                        }
                        if (! $found) {
                                }
                        }
                        if (! $found) {


@@ -316,10 +390,22 @@ elsif ($action eq 'config') {
                        }
                }
        }
                        }
                }
        }

-       modifyconfig($config, $section, %changefields) if %changefields;
+       modifyconfig($ENV{MR_CONFIG}, $section, %changefields) if %changefields;

        exit 0;
 }
 elsif ($action eq 'register') {
        exit 0;
 }
 elsif ($action eq 'register') {

+       if (! $config_overridden) {
+               # Find the closest known mrconfig file to the current
+               # directory.
+               $directory.="/" unless $directory=~/\/$/;
+               foreach my $topdir (reverse sort keys %config) {
+                       next unless length $topdir;
+                       if ($directory=~/^\Q$topdir\E/) {
+                               $ENV{MR_CONFIG}=$configfiles{$topdir};
+                               last;
+                       }
+               }
+       }

        my $command="set -e; ".$config{''}{DEFAULT}{lib}."\n".
                "my_action(){ $config{''}{DEFAULT}{$action}\n }; my_action ".
                join(" ", map { s/\//\/\//g; s/"/\"/g; '"'.$_.'"' } @ARGV);
        my $command="set -e; ".$config{''}{DEFAULT}{lib}."\n".
                "my_action(){ $config{''}{DEFAULT}{$action}\n }; my_action ".
                join(" ", map { s/\//\/\//g; s/"/\"/g; '"'.$_.'"' } @ARGV);


@@ -327,74 +413,115 @@ elsif ($action eq 'register') {
        exec($command) || die "exec: $!";
 }
 
        exec($command) || die "exec: $!";
 }
 

+# an ordered list of repos
+my @list;
+foreach my $topdir (sort keys %config) {
+       foreach my $subdir (sort keys %{$config{$topdir}}) {
+               push @list, {
+                       topdir => $topdir,
+                       subdir => $subdir,
+                       order => $config{$topdir}{$subdir}{order},
+               };
+       }
+}
+@list = sort {
+               $a->{order}  <=> $b->{order}
+                            ||
+               $a->{topdir} cmp $b->{topdir}
+                            ||
+               $a->{subdir} cmp $b->{subdir}
+       } @list;
+

 # work out what repos to act on
 my @repos;
 my $nochdir=0;
 # work out what repos to act on
 my @repos;
 my $nochdir=0;

-foreach my $topdir (sort keys %config) {
-       foreach my $subdir (sort keys %{$config{$topdir}}) {
+foreach my $repo (@list) {
+       my $topdir=$repo->{topdir};
+       my $subdir=$repo->{subdir};
+
+       next if $subdir eq 'DEFAULT';
+       my $dir=($subdir =~/^\//) ? $subdir : $topdir.$subdir;
+       my $d=$directory;
+       $dir.="/" unless $dir=~/\/$/;
+       $d.="/" unless $d=~/\/$/;
+       next if $no_recurse && $d ne $dir;
+       next if $dir ne $d && $dir !~ /^\Q$d\E/;
+       push @repos, [$dir, $topdir, $subdir];
+}
+if (! @repos) {
+       # fallback to find a leaf repo
+       foreach my $repo (reverse @list) {
+               my $topdir=$repo->{topdir};
+               my $subdir=$repo->{subdir};
+               

                next if $subdir eq 'DEFAULT';
                my $dir=($subdir =~/^\//) ? $subdir : $topdir.$subdir;
                my $d=$directory;
                $dir.="/" unless $dir=~/\/$/;
                $d.="/" unless $d=~/\/$/;
                next if $subdir eq 'DEFAULT';
                my $dir=($subdir =~/^\//) ? $subdir : $topdir.$subdir;
                my $d=$directory;
                $dir.="/" unless $dir=~/\/$/;
                $d.="/" unless $d=~/\/$/;

-               next if $dir ne $directory && $dir !~ /^\Q$directory\E/;
-               push @repos, [$dir, $topdir, $subdir];
-       }
-}
-if (! @repos) {
-       # fallback to find a leaf repo
-       LEAF: foreach my $topdir (reverse sort keys %config) {
-               foreach my $subdir (reverse sort keys %{$config{$topdir}}) {
-                       next if $subdir eq 'DEFAULT';
-                       my $dir=($subdir =~/^\//) ? $subdir : $topdir.$subdir;
-                       my $d=$directory;
-                       $dir.="/" unless $dir=~/\/$/;
-                       $d.="/" unless $d=~/\/$/;
-                       if ($d=~/^\Q$dir\E/) {
-                               push @repos, [$dir, $topdir, $subdir];
-                               last LEAF;
-                       }
+               if ($d=~/^\Q$dir\E/) {
+                       push @repos, [$dir, $topdir, $subdir];
+                       last;

                }
        }
        $nochdir=1;
 }
 
                }
        }
        $nochdir=1;
 }
 

-my (@failed, @successful, @skipped);
-foreach my $repo (@repos) {
-       action($action, @$repo);
+# run the action on each repository and print stats
+my (@ok, @failed, @skipped);
+if ($jobs > 1) {
+       mrs(@repos);
+}
+else {
+       foreach my $repo (@repos) {
+               record($repo, action($action, @$repo));
+       }
+}
+if (! @ok && ! @failed && ! @skipped) {
+       die "mr $action: no repositories found to work on\n";

 }
 }

+print "mr $action: finished (".join("; ",
+       showstat($#ok+1, "ok", "ok"),
+       showstat($#failed+1, "failed", "failed"),
+       showstat($#skipped+1, "skipped", "skipped"),
+).")\n";
+if ($stats) {
+       if (@skipped) {
+               print "mr $action: (skipped: ".join(" ", @skipped).")\n";
+       }
+       if (@failed) {
+               print STDERR "mr $action: (failed: ".join(" ", @failed).")\n";
+       }
+}
+if (@failed) {
+       exit 1;
+}
+elsif (! @ok && @skipped) {
+       exit 1;
+}
+exit 0;

 
 

-sub action {
+sub action { #{{{

        my ($action, $dir, $topdir, $subdir) = @_;
        my ($action, $dir, $topdir, $subdir) = @_;

-       
-       my $lib= exists $config{$topdir}{$subdir}{lib} ?
-                       $config{$topdir}{$subdir}{lib}."\n" : "";

 
 

-       if (exists $config{$topdir}{$subdir}{deleted}) {
-               if (! -d $dir) {
-                       return;
-               }
-               else {
-                       my $test="set -e;".$lib.$config{$topdir}{$subdir}{deleted};
-                       print "mr $action: running deleted test >>$test<<\n" if $verbose;
-                       my $ret=system($test);
-                       if ($ret >> 8 == 0) {
-                               print STDERR "mr error: $dir should be deleted yet still exists\n\n";
-                               push @failed, $dir;
-                               return;
-                       }
-               }
-       }
+       $ENV{MR_CONFIG}=$configfiles{$topdir};
+       my $lib=exists $config{$topdir}{$subdir}{lib} ?
+                      $config{$topdir}{$subdir}{lib}."\n" : "";

 
        if ($action eq 'checkout') {
                if (-d $dir) {
                        print "mr $action: $dir already exists, skipping checkout\n" if $verbose;
 
        if ($action eq 'checkout') {
                if (-d $dir) {
                        print "mr $action: $dir already exists, skipping checkout\n" if $verbose;

-                       push @skipped, $dir;
-                       return;
+                       return SKIPPED;

                }
                }

+

                $dir=~s/^(.*)\/[^\/]+\/?$/$1/;
                $dir=~s/^(.*)\/[^\/]+\/?$/$1/;

+
+               if (! -d $dir) {
+                       print "mr $action: creating parent directory $dir\n" if $verbose;
+                       system("mkdir", "-p", $dir);
+               }

        }
        }

-       elsif ($action eq 'update') {
+       elsif ($action =~ /update/) {

                if (! -d $dir) {
                        return action("checkout", $dir, $topdir, $subdir);
                }
                if (! -d $dir) {
                        return action("checkout", $dir, $topdir, $subdir);
                }


@@ -407,27 +534,38 @@ sub action {
                        "my_action(){ $config{$topdir}{$subdir}{skip}\n }; my_action '$action'";
                print "mr $action: running skip test >>$test<<\n" if $verbose;
                my $ret=system($test);
                        "my_action(){ $config{$topdir}{$subdir}{skip}\n }; my_action '$action'";
                print "mr $action: running skip test >>$test<<\n" if $verbose;
                my $ret=system($test);

+               if ($ret != 0) {
+                       if (($? & 127) == 2) {
+                               print STDERR "mr $action: interrupted\n";
+                               return ABORT;
+                       }
+                       elsif ($? & 127) {
+                               print STDERR "mr $action: skip test received signal ".($? & 127)."\n";
+                               return ABORT;
+                       }
+               }

                if ($ret >> 8 == 0) {
                        print "mr $action: $dir skipped per config file\n" if $verbose;
                if ($ret >> 8 == 0) {
                        print "mr $action: $dir skipped per config file\n" if $verbose;

-                       push @skipped, $dir;
-                       return;
+                       return SKIPPED;

                }
        }
        
        if (! $nochdir && ! chdir($dir)) {
                print STDERR "mr $action: failed to chdir to $dir: $!\n";
                }
        }
        
        if (! $nochdir && ! chdir($dir)) {
                print STDERR "mr $action: failed to chdir to $dir: $!\n";

-               push @failed, $dir;
+               return FAILED;

        }
        elsif (! exists $config{$topdir}{$subdir}{$action}) {
                print STDERR "mr $action: no defined $action command for $topdir$subdir, skipping\n";
        }
        elsif (! exists $config{$topdir}{$subdir}{$action}) {
                print STDERR "mr $action: no defined $action command for $topdir$subdir, skipping\n";

-               push @skipped, $dir;
+               return SKIPPED;

        }
        else {
                if (! $nochdir) {
                        print "mr $action: $topdir$subdir\n";
                }
                else {
        }
        else {
                if (! $nochdir) {
                        print "mr $action: $topdir$subdir\n";
                }
                else {

-                       print "mr $action: $topdir$subdir (in subdir $directory)\n";
+                       my $s=$directory;
+                       $s=~s/^\Q$topdir$subdir\E\/?//;
+                       print "mr $action: $topdir$subdir (in subdir $s)\n";

                }
                my $command="set -e; ".$lib.
                        "my_action(){ $config{$topdir}{$subdir}{$action}\n }; my_action ".
                }
                my $command="set -e; ".$lib.
                        "my_action(){ $config{$topdir}{$subdir}{$action}\n }; my_action ".


@@ -435,24 +573,125 @@ sub action {
                print STDERR "mr $action: running >>$command<<\n" if $verbose;
                my $ret=system($command);
                if ($ret != 0) {
                print STDERR "mr $action: running >>$command<<\n" if $verbose;
                my $ret=system($command);
                if ($ret != 0) {

+                       if (($? & 127) == 2) {
+                               print STDERR "mr $action: interrupted\n";
+                               return ABORT;
+                       }
+                       elsif ($? & 127) {
+                               print STDERR "mr $action: received signal ".($? & 127)."\n";
+                               return ABORT;
+                       }

                        print STDERR "mr $action: failed ($ret)\n" if $verbose;
                        print STDERR "mr $action: failed ($ret)\n" if $verbose;

-                       push @failed, $dir;

                        if ($ret >> 8 != 0) {
                                print STDERR "mr $action: command failed\n";
                        }
                        elsif ($ret != 0) {
                                print STDERR "mr $action: command died ($ret)\n";
                        }
                        if ($ret >> 8 != 0) {
                                print STDERR "mr $action: command failed\n";
                        }
                        elsif ($ret != 0) {
                                print STDERR "mr $action: command died ($ret)\n";
                        }

+                       return FAILED;

                }
                else {
                }
                else {

-                       push @successful, $dir;
+                       if ($action eq 'checkout' && ! -d $dir) {
+                               print STDERR "mr $action: $dir missing after checkout\n";;
+                               return FAILED;
+                       }
+
+                       return OK;

                }
                }

+       }
+} #}}}

 
 

+# run actions on multiple repos, in parallel
+sub mrs { #{{{
+       $| = 1;
+       my @active;
+       my @fhs;
+       my @out;
+       my $running=0;
+       while (@fhs or @repos) {
+               while ($running < $jobs && @repos) {
+                       $running++;
+                       my $repo = shift @repos;
+                       pipe(my $outfh, CHILD_STDOUT);
+                       pipe(my $errfh, CHILD_STDERR);
+                       my $pid;
+                       unless ($pid = fork) {
+                               die "mr $action: cannot fork: $!" unless defined $pid;
+                               open(STDOUT, ">&CHILD_STDOUT") || die "mr $action cannot reopen stdout: $!";
+                               open(STDERR, ">&CHILD_STDERR") || die "mr $action cannot reopen stderr: $!";
+                               close CHILD_STDOUT;
+                               close CHILD_STDERR;
+                               close $outfh;
+                               close $errfh;
+                               exit action($action, @$repo);
+                       }
+                       close CHILD_STDOUT;
+                       close CHILD_STDERR;
+                       push @active, [$pid, $repo];
+                       push @fhs, [$outfh, $errfh];
+                       push @out, ['',     ''];
+               }
+               my ($rin, $rout) = ('','');
+               my $nfound;
+               foreach my $fh (@fhs) {
+                       next unless defined $fh;
+                       vec($rin, fileno($fh->[0]), 1) = 1 if defined $fh->[0];
+                       vec($rin, fileno($fh->[1]), 1) = 1 if defined $fh->[1];
+               }
+               $nfound = select($rout=$rin, undef, undef, 1);
+               foreach my $channel (0, 1) {
+                       foreach my $i (0..$#fhs) {
+                               next unless defined $fhs[$i];
+                               my $fh = $fhs[$i][$channel];
+                               next unless defined $fh;
+                               if (vec($rout, fileno($fh), 1) == 1) {
+                                       my $r = '';
+                                       if (sysread($fh, $r, 1024) == 0) {
+                                               close($fh);
+                                               $fhs[$i][$channel] = undef;
+                                               if (! defined $fhs[$i][0] &&
+                                                   ! defined $fhs[$i][1]) {
+                                                       waitpid($active[$i][0], 0);
+                                                       print STDOUT $out[$i][0];
+                                                       print STDERR $out[$i][1];
+                                                       record($active[$i][1], $? >> 8);
+                                                       splice(@fhs, $i, 1);
+                                                       splice(@active, $i, 1);
+                                                       splice(@out, $i, 1);
+                                                       $running--;
+                                               }
+                                       }
+                                       $out[$i][$channel] .= $r;
+                               }
+                       }
+               }
+       }
+} #}}}
+
+sub record { #{{{
+       my $dir=shift()->[0];
+       my $ret=shift;
+
+       if ($ret == OK) {
+               push @ok, $dir;

                print "\n";
        }
                print "\n";
        }

-}
+       elsif ($ret == FAILED) {
+               push @failed, $dir;
+               print "\n";
+       }
+       elsif ($ret == SKIPPED) {
+               push @skipped, $dir;
+       }
+       elsif ($ret == ABORT) {
+               exit 1;
+       }
+       else {
+               die "unknown exit status $ret";
+       }
+} #}}}

 
 

-sub showstat {
+sub showstat { #{{{

        my $count=shift;
        my $singular=shift;
        my $plural=shift;
        my $count=shift;
        my $singular=shift;
        my $plural=shift;


@@ -460,25 +699,10 @@ sub showstat {
                return "$count ".($count > 1 ? $plural : $singular);
        }
        return;
                return "$count ".($count > 1 ? $plural : $singular);
        }
        return;

-}
-if (! @successful && ! @failed && ! @skipped) {
-       die "mr $action: no repositories found to work on\n";
-}
-print "mr $action: finished (".join("; ",
-       showstat($#successful+1, "successful", "successful"),
-       showstat($#failed+1, "failed", "failed"),
-       showstat($#skipped+1, "skipped", "skipped"),
-).")\n";
-if (@failed) {
-       exit 1;
-}
-elsif (! @successful && @skipped) {
-       exit 1;
-}
-exit 0;
+} #}}}

 
 my %loaded;
 
 my %loaded;

-sub loadconfig {
+sub loadconfig { #{{{

        my $f=shift;
 
        my @toload;
        my $f=shift;
 
        my @toload;


@@ -505,10 +729,17 @@ sub loadconfig {
                        $dir=".";
                }
                $dir=abs_path($dir)."/";
                        $dir=".";
                }
                $dir=abs_path($dir)."/";

+               
+               if (! exists $configfiles{$dir}) {
+                       $configfiles{$dir}=$f;
+               }

 
                # copy in defaults from first parent
                my $parent=$dir;
 
                # copy in defaults from first parent
                my $parent=$dir;

-               while ($parent=~s/^(.*)\/[^\/]+\/?$/$1/) {
+               while ($parent=~s/^(.*\/)[^\/]+\/?$/$1/) {
+                       if ($parent eq '/') {
+                               $parent="";
+                       }

                        if (exists $config{$parent} &&
                            exists $config{$parent}{DEFAULT}) {
                                $config{$dir}{DEFAULT}={ %{$config{$parent}{DEFAULT}} };
                        if (exists $config{$parent} &&
                            exists $config{$parent}{DEFAULT}) {
                                $config{$dir}{DEFAULT}={ %{$config{$parent}{DEFAULT}} };


@@ -523,8 +754,10 @@ sub loadconfig {
        close $in;
 
        my $section;
        close $in;
 
        my $section;

+       my $line=0;

        while (@lines) {
                $_=shift @lines;
        while (@lines) {
                $_=shift @lines;

+               $line++;

                chomp;
                next if /^\s*\#/ || /^\s*$/;
                if (/^\[([^\]]*)\]\s*$/) {
                chomp;
                next if /^\s*\#/ || /^\s*$/;
                if (/^\[([^\]]*)\]\s*$/) {


@@ -537,6 +770,7 @@ sub loadconfig {
                        # continued value
                        while (@lines && $lines[0]=~/^\s(.+)/) {
                                shift(@lines);
                        # continued value
                        while (@lines && $lines[0]=~/^\s(.+)/) {
                                shift(@lines);

+                               $line++;

                                $value.="\n$1";
                                chomp $value;
                        }
                                $value.="\n$1";
                                chomp $value;
                        }


@@ -561,23 +795,34 @@ sub loadconfig {
                                $knownactions{$parameter}=1;
                                if ($parameter eq 'chain' &&
                                    length $dir && $section ne "DEFAULT" &&
                                $knownactions{$parameter}=1;
                                if ($parameter eq 'chain' &&
                                    length $dir && $section ne "DEFAULT" &&

-                                   -e $dir.$section."/.mrconfig" &&
-                                   system($value) >> 8 == 0) {
-                                       push @toload, $dir.$section."/.mrconfig";
+                                   -e $dir.$section."/.mrconfig") {
+                                       my $ret=system($value);
+                                       if ($ret != 0) {
+                                               if (($? & 127) == 2) {
+                                                       print STDERR "mr $action: chain test interrupted\n";
+                                                       exit 2;
+                                               }
+                                               elsif ($? & 127) {
+                                                       print STDERR "mr $action: chain test received signal ".($? & 127)."\n";
+                                               }
+                                       }
+                                       else {
+                                               push @toload, $dir.$section."/.mrconfig";
+                                       }

                                }
                        }
                }
                else {
                                }
                        }
                }
                else {

-                       die "$f line $.: parse error\n";
+                       die "$f line $line: parse error\n";

                }
        }
 
        foreach (@toload) {
                loadconfig($_);
        }
                }
        }
 
        foreach (@toload) {
                loadconfig($_);
        }

-}
+} #}}}

 
 

-sub modifyconfig {
+sub modifyconfig { #{{{

        my $f=shift;
        # the section to modify or add
        my $targetsection=shift;
        my $f=shift;
        # the section to modify or add
        my $targetsection=shift;


@@ -672,10 +917,11 @@ sub modifyconfig {
        open(my $out, ">", $f) || die "mr: write $f: $!\n";
        print $out @out;
        close $out;     
        open(my $out, ">", $f) || die "mr: write $f: $!\n";
        print $out @out;
        close $out;     

-}
+} #}}}

 
 # Finally, some useful actions that mr knows about by default.
 # These can be overridden in ~/.mrconfig.
 
 # Finally, some useful actions that mr knows about by default.
 # These can be overridden in ~/.mrconfig.

+#DATA{{{

 __DATA__
 [ALIAS]
 co = checkout
 __DATA__
 [ALIAS]
 co = checkout


@@ -683,13 +929,24 @@ ci = commit
 ls = list
 
 [DEFAULT]
 ls = list
 
 [DEFAULT]

+order = 10

 lib =
 lib =

+       PWD="$pwd"

        error() {
                echo "mr: $@" >&2
                exit 1
        }
        error() {
                echo "mr: $@" >&2
                exit 1
        }

+       warning() {
+               echo "mr (warning): $@" >&2
+       }
+       info() {
+               echo "mr: $@" >&2
+       }

        hours_since() {
        hours_since() {

-               for dir in .git .svn .bzr CVS; do
+               if [ -z "$1" ] || [ -z "$2" ]; then
+                       error "mr: usage: hours_since action num"
+               fi
+               for dir in .git .svn .bzr CVS .hg _darcs; do

                        if [ -e "$MR_REPO/$dir" ]; then
                                flagfile="$MR_REPO/$dir/.mr_last$1"
                                break
                        if [ -e "$MR_REPO/$dir" ]; then
                                flagfile="$MR_REPO/$dir/.mr_last$1"
                                break


@@ -698,99 +955,213 @@ lib =
                if [ -z "$flagfile" ]; then
                        error "cannot determine flag filename"
                fi
                if [ -z "$flagfile" ]; then
                        error "cannot determine flag filename"
                fi

-               perl -wle 'print -f shift() ? int((-M _) * 24) : 9999' "$flagfile"
-               touch "$flagfile"
+               delta=$(perl -wle 'print -f shift() ? int((-M _) * 24) : 9999' "$flagfile")
+               if [ "$delta" -lt "$2" ]; then
+                       exit 0
+               else
+                       touch "$flagfile"
+                       exit 1
+               fi
+       }
+       get_git_repo_type()
+       {
+               if [ -d "$1"/.git ] && [ -d "$1"/.git/refs/heads ] &&
+                       [ -d "$1"/.git/objects ] && [ -f "$1"/.git/config ];
+                       then
+                       echo non-bare
+               elif [ -d "$1"/refs/heads ] && [ -d "$1"/refs/tags ] &&
+                       [ -d "$1"/objects ] && [ -f "$1"/config ]; then
+                       local bare
+                       bare="$(GIT_CONFIG="$1"/config git-config --get core.bare)"
+                       case "$bare" in
+                               true) echo bare;;
+                               false) echo fake-bare;;
+                               *) return 255;;
+                       esac
+               else
+                       return 1
+               fi
+       }
+       is_git_repo() {
+               get_git_repo_type "$1" >/dev/null
+       }
+       get_repo_type() {
+               if [ -d "$1"/.svn ]; then
+                       echo svn
+               elif is_git_repo "$1"; then
+                       echo git
+               elif [ -d "$1"/.bzr ]; then
+                       echo bzr
+               elif [ -d "$1"/CVS ]; then
+                       echo CVS
+               elif [ -d "$1"/.hg ]; then
+                       echo hg
+               elif [ -d "$1"/_darcs ]; then
+                       echo darcs
+               else
+                       echo unknown
+               fi

        }
 
 update =
        }
 
 update =

-       if [ -d "$MR_REPO"/.svn ]; then
-               svn update "$@"
-       elif [ -d "$MR_REPO"/.git ]; then
-               git pull origin master "$@"
-       elif [ -d "$MR_REPO"/.bzr ]; then
-               bzr merge "$@"
-       elif [ -d "$MR_REPO"/CVS ]; then
-               cvs update "$@"
-       else
-               error "unknown repo type"
-       fi
+       case "$(get_repo_type "$MR_REPO")" in
+       svn) svn update "$@";;
+       git)
+               # all this is because of a bug in git-fetch, which requires GIT_DIR set
+               local git_dir_override; git_dir_override=.git
+               case "$(get_git_repo_type "$MR_REPO")" in
+                       fake-bare) git_dir_override="$MR_REPO";;
+               esac
+               args="$@"
+               [ -z "$args" ] && args="-t origin master"
+               eval GIT_DIR="$git_dir_override" git pull "$args"
+               ;;
+       bzr) bzr merge "$@";;
+       CVS) cvs update "$@";;
+       hg) hg pull "$@" && hg update "$@";;
+       darcs) darcs pull -a "$@";;
+       *) error "unknown repo type";;
+       esac
+

 status =
 status =

-       if [ -d "$MR_REPO"/.svn ]; then
-               svn status "$@"
-       elif [ -d "$MR_REPO"/.git ]; then
-               git status "$@" || true
-       elif [ -d "$MR_REPO"/.bzr ]; then
-               bzr status "$@"
-       elif [ -d "$MR_REPO"/CVS ]; then
-               cvs status "$@"
-       else
-               error "unknown repo type"
-       fi
+       case "$(get_repo_type "$MR_REPO")" in
+       svn) svn status "$@";;
+       git) git status "$@" || :;;
+       bzr) bzr status "$@";;
+       CVS) cvs status "$@";;
+       hg) hg status "$@";;
+       darcs) darcs whatsnew -ls "$@";;
+       *) error "unknown repo type";;
+       esac
+

 commit =
 commit =

-       if [ -d "$MR_REPO"/.svn ]; then
-               svn commit "$@"
-       elif [ -d "$MR_REPO"/.git ]; then
+       case "$(get_repo_type "$MR_REPO")" in
+       svn) svn commit "$@";;
+       git)
+               case "$(get_git_repo_type "$MR_REPO")" in
+                       bare) error "cannot commit to bare git repositories";;
+                       fake-bare) error "commit does not work for fake bare git repositories (yet).";;
+               esac

                git commit -a "$@" && git push --all
                git commit -a "$@" && git push --all

-       elif [ -d "$MR_REPO"/.bzr ]; then
-               bzr commit "$@" && bzr push
-       elif [ -d "$MR_REPO"/CVS ]; then
-               cvs commit "$@"
-       else
-               error "unknown repo type"
-       fi
+               ;;
+       bzr) bzr commit "$@" && bzr push;;
+       CVS) cvs commit "$@";;
+       hg) hg commit -m "$@" && hg push;;
+       darcs) darcs commit -a -m "$@" && darcs push -a;;
+       *) error "unknown repo type";;
+       esac
+

 diff =
 diff =

-       if [ -d "$MR_REPO"/.svn ]; then
-               svn diff "$@"
-       elif [ -d "$MR_REPO"/.git ]; then
+       case "$(get_repo_type "$MR_REPO")" in
+       svn) svn diff "$@";;
+       git)
+               case "$(get_git_repo_type "$MR_REPO")" in
+                       bare) error "cannot diff in bare git repositories";;
+                       fake-bare) error "diff does not work for fake bare git repositories (yet).";;
+               esac

                git diff "$@"
                git diff "$@"

-       elif [ -d "$MR_REPO"/.bzr ]; then
-               bzr diff "$@"
-       elif [ -d "$MR_REPO"/CVS ]; then
-               cvs diff "$@"
-       else
-               error "unknown repo type"
-       fi
+               ;;
+       bzr) bzr diff "$@";;
+       CVS) cvs diff "$@";;
+       hg) hg diff "$@";;
+       darcs) darcs diff "$@";;
+       *) error "unknown repo type";;
+       esac
+

 log =
 log =

-       if [ -d "$MR_REPO"/.svn ]; then
-               svn log"$@"
-       elif [ -d "$MR_REPO"/.git ]; then
-               git log "$@"
-       elif [ -d "$MR_REPO"/.bzr ]; then
-               bzr log "$@"
-       elif [ -d "$MR_REPO"/CVS ]; then
-               cvs log "$@"
-       else
-               error "unknown repo type"
-       fi
+       case "$(get_repo_type "$MR_REPO")" in
+       svn) svn log"$@";;
+       git) git log "$@";;
+       bzr) bzr log "$@";;
+       CVS) cvs log "$@";;
+       hg) hg log "$@";;
+       darcs) darcs changes "$@";;
+       *) error "unknown repo type";;
+       esac
+

 register =
        if [ -n "$1" ]; then
                cd "$1"
        fi
 register =
        if [ -n "$1" ]; then
                cd "$1"
        fi

-       basedir="$(basename $(pwd))"
-       if [ -d .svn ]; then
+       basedir="${PWD##*/}"
+       case "$(get_repo_type .)" in
+       svn)

                url=$(LANG=C svn info . | grep -i ^URL: | cut -d ' ' -f 2)
                if [ -z "$url" ]; then
                        error "cannot determine svn url"
                fi
                url=$(LANG=C svn info . | grep -i ^URL: | cut -d ' ' -f 2)
                if [ -z "$url" ]; then
                        error "cannot determine svn url"
                fi

-               echo "Registering svn url: $url"
-               mr config "$(pwd)" checkout="svn co $url $basedir"
-       elif [ -d .git ]; then
-               url=$(LANG=C git-config --get remote.origin.url)
+               echo "Registering svn url: $url in $MR_CONFIG"
+               mr -c "$MR_CONFIG" config "$PWD" checkout="svn co $url $basedir"
+               ;;
+       git)
+               local repo_type; repo_type="$(get_git_repo_type .)"
+               local config;
+               case "$repo_type" in
+                       non-bare) config=.git/config;;
+                       bare|fake-bare) config=config;;
+               esac
+               url="$(LANG=C GIT_CONFIG="$config" git-config --get remote.origin.url)" || :

                if [ -z "$url" ]; then
                        error "cannot determine git url"
                fi
                if [ -z "$url" ]; then
                        error "cannot determine git url"
                fi

-               echo "Registering git url: $url"
-               mr config "$(pwd)" checkout="git clone $url $basedir"
-       elif [ -d .bzr ]; then
+               local clone_opts add_cmd work_tree suffix
+               case "$repo_type" in
+                       fake-bare)
+                               # this seems like a fake bare repo and needs a worktree
+                               work_tree="$(git-config --get core.worktree)" || :
+                               work_tree="${work_tree%%/}/"
+                               if [ ! -d "$work_tree" ]; then
+                                       error "git worktree '$work_tree' does not exist"
+                               fi
+                               clone_opts=" --no-checkout"
+                               add_cmd="$add_cmd && cd $basedir"
+                               add_cmd="$add_cmd && git read-tree HEAD"
+                               add_cmd="$add_cmd && git checkout-index -a --prefix='$work_tree' || :"
+                               add_cmd="$add_cmd; git config core.worktree '$work_tree'"
+                               add_cmd="$add_cmd && mv .git/* . && rmdir .git"
+                               suffix=" (with worktree $work_tree)"
+                               ;;
+                       bare)
+                               clone_opts=" --bare"
+                               suffix=" (bare repository)"
+                               ;;
+               esac
+               echo "Registering git url: $url in $MR_CONFIG${suffix:-}"
+               mr -c "$MR_CONFIG" config "$PWD" checkout="git clone${clone_opts:-} $url $basedir${add_cmd:-}"
+               ;;
+       bzr)

                url=$(cat .bzr/branch/parent)
                if [ -z "$url" ]; then
                        error "cannot determine bzr url"
                fi
                url=$(cat .bzr/branch/parent)
                if [ -z "$url" ]; then
                        error "cannot determine bzr url"
                fi

-               echo "Registering bzr url: $url"
-               mr config "$(pwd)" checkout="bzr clone $url $basedir"
-       else
-               error "unable to register this repo type"
-       fi
+               echo "Registering bzr url: $url in $MR_CONFIG"
+               mr -c "$MR_CONFIG" config "$PWD" checkout="bzr clone $url $basedir"
+               ;;
+       CVS)
+               repo=$(cat CVS/Repository)
+               root=$(cat CVS/Root)
+               if [ -z "$root" ]; then
+                       error "cannot determine cvs root"
+               fi
+               echo "Registering cvs repository $repo at root $root"
+               mr -c "$MR_CONFIG" config "$PWD" \
+                       checkout="cvs -d '$root' co -d $basedir $repo"
+               ;;
+       hg)
+               url=$(hg showconfig paths.default)
+               echo "Registering mercurial repo url: $url in $MR_CONFIG"
+               mr -c "$MR_CONFIG" config "$PWD" \
+                       checkout="hg clone $url $basedir"
+               ;;
+       darcs)
+               url=$(cat _darcs/prefs/defaultrepo)
+               echo "Registering darcs repository $url in $MR_CONFIG"
+               mr -c "$MR_CONFIG" config "$PWD" \
+                       checkout="darcs get $url $basedir"
+               ;;
+       *) error "unable to register this repo type";;
+       esac
+

 help =
        if [ ! -e "$MR_PATH" ]; then
                error "cannot find program path"
 help =
        if [ ! -e "$MR_PATH" ]; then
                error "cannot find program path"


@@ -801,3 +1172,7 @@ config =
 
 ed = echo "A horse is a horse, of course, of course.."
 T = echo "I pity the fool."
 
 ed = echo "A horse is a horse, of course, of course.."
 T = echo "I pity the fool."

+right = echo "Not found."
+#}}}
+
+# vim:sw=8:sts=0:ts=8:noet