Merge commit 'madduck/master'

[code/myrepos.git] / mr

diff --git a/mr b/mr
index 80ccc78eef899c9388787665d574ef478253224e..0e14168e10a3d965d7b9054b742b2870e404df17 100755 (executable)
--- a/mr
+++ b/mr
@@ -22,17 +22,17 @@ 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 repositories at or below your
 working directory. Or, if you are in a subdirectory of a repository that
 
 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


@@ -108,6 +108,10 @@ 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.
 
 The ~/.mrconfig file is used by default. To use a different config file,
 use the -c option.
 


@@ -153,6 +157,12 @@ about exactly which repositories failed and were skipped, if any.
 Just operate on the repository for the current directory, do not 
 recurse into deeper repositories.
 
 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


@@ -188,9 +198,9 @@ 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
 
 Note that these shell commands are run in a "set -e" shell
 environment, where any additional parameters you pass are available in


@@ -219,7 +229,17 @@ 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
 


@@ -227,14 +247,6 @@ 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 true, 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 repository'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


@@ -259,6 +271,13 @@ use warnings;
 use strict;
 use Getopt::Long;
 use Cwd qw(getcwd abs_path);
 use strict;
 use Getopt::Long;
 use Cwd qw(getcwd abs_path);

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

 
 $SIG{INT}=sub {
        print STDERR "mr: interrupted\n";
 
 $SIG{INT}=sub {
        print STDERR "mr: interrupted\n";


@@ -267,14 +286,15 @@ $SIG{INT}=sub {
 
 $ENV{MR_CONFIG}="$ENV{HOME}/.mrconfig";
 my $config_overridden=0;
 
 $ENV{MR_CONFIG}="$ENV{HOME}/.mrconfig";
 my $config_overridden=0;

-my $directory=getcwd();

 my $verbose=0;
 my $stats=0;
 my $no_recurse=0;
 my $verbose=0;
 my $stats=0;
 my $no_recurse=0;

+my $jobs=1;

 my %config;
 my %configfiles;
 my %knownactions;
 my %alias;
 my %config;
 my %configfiles;
 my %knownactions;
 my %alias;

+my $directory=getcwd();

 
 Getopt::Long::Configure("no_permute");
 my $result=GetOptions(
 
 Getopt::Long::Configure("no_permute");
 my $result=GetOptions(


@@ -283,12 +303,16 @@ my $result=GetOptions(
        "v|verbose" => \$verbose,
        "s|stats" => \$stats,
        "n|no-recurse" => \$no_recurse,
        "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");
+}

 
 # 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
 
 # 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


@@ -296,17 +320,17 @@ if (! $result || @ARGV < 1) {
 if ($ENV{MR_CONFIG} !~ /^\//) {
        $ENV{MR_CONFIG}=getcwd()."/".$ENV{MR_CONFIG};
 }
 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;
+};

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

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

 # 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}) {


@@ -358,6 +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) {


@@ -388,43 +413,93 @@ 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 $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
-       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, @ok, @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 { #{{{
        my ($action, $dir, $topdir, $subdir) = @_;
 
 sub action { #{{{
        my ($action, $dir, $topdir, $subdir) = @_;


@@ -433,48 +508,20 @@ sub action { #{{{
        my $lib=exists $config{$topdir}{$subdir}{lib} ?
                       $config{$topdir}{$subdir}{lib}."\n" : "";
 
        my $lib=exists $config{$topdir}{$subdir}{lib} ?
                       $config{$topdir}{$subdir}{lib}."\n" : "";
 

-       if (exists $config{$topdir}{$subdir}{deleted}) {
-               my $test="set -e;".$lib.$config{$topdir}{$subdir}{deleted};
-               print "mr $action: running deleted test >>$test<<\n" if $verbose;
-               my $ret=system($test);
-               if ($ret != 0) {
-                       if (($? & 127) == 2) {
-                               print STDERR "mr $action: interrupted\n";
-                               exit 2;
-                       }
-                       elsif ($? & 127) {
-                               print STDERR "mr $action: deleted test received signal ".($? & 127)."\n";
-                       }
-               }
-               if ($ret >> 8 == 0) {
-                       if (-d $dir) {
-                               print STDERR "mr error: $dir should be deleted yet still exists\n\n";
-                               push @failed, $dir;
-                               return;
-                       }
-                       else {
-                               print "mr $action: $dir skipped (as deleted) per config file\n" if $verbose;
-                               push @skipped, $dir;
-                               return;
-                       }
-               }
-       }
-

        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/;
 
                if (! -d $dir) {
                        print "mr $action: creating parent directory $dir\n" if $verbose;
                }
 
                $dir=~s/^(.*)\/[^\/]+\/?$/$1/;
 
                if (! -d $dir) {
                        print "mr $action: creating parent directory $dir\n" if $verbose;

-                       my $ret=system("mkdir", "-p", $dir);
+                       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);
                }


@@ -490,34 +537,35 @@ sub action { #{{{
                if ($ret != 0) {
                        if (($? & 127) == 2) {
                                print STDERR "mr $action: interrupted\n";
                if ($ret != 0) {
                        if (($? & 127) == 2) {
                                print STDERR "mr $action: interrupted\n";

-                               exit 2;
+                               return ABORT;

                        }
                        elsif ($? & 127) {
                                print STDERR "mr $action: skip test received signal ".($? & 127)."\n";
                        }
                        elsif ($? & 127) {
                                print STDERR "mr $action: skip test received signal ".($? & 127)."\n";

-                               exit 1;
+                               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 ".


@@ -527,32 +575,120 @@ sub action { #{{{
                if ($ret != 0) {
                        if (($? & 127) == 2) {
                                print STDERR "mr $action: interrupted\n";
                if ($ret != 0) {
                        if (($? & 127) == 2) {
                                print STDERR "mr $action: interrupted\n";

-                               exit 2;
+                               return ABORT;

                        }
                        elsif ($? & 127) {
                                print STDERR "mr $action: received signal ".($? & 127)."\n";
                        }
                        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 {
                        if ($action eq 'checkout' && ! -d $dir) {
                                print STDERR "mr $action: $dir missing after checkout\n";;
                }
                else {
                        if ($action eq 'checkout' && ! -d $dir) {
                                print STDERR "mr $action: $dir missing after checkout\n";;

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

                        }
 
                        }
 

-                       push @ok, $dir;
+                       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, $dir;
+               print "\n";
+       }
+       elsif ($ret == FAILED) {
+               push @failed, $dir;

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

+       elsif ($ret == SKIPPED) {
+               push @skipped, $dir;
+       }
+       elsif ($ret == ABORT) {
+               exit 1;
+       }
+       else {
+               die "unknown exit status $ret";
+       }

 } #}}}
 
 sub showstat { #{{{
 } #}}}
 
 sub showstat { #{{{


@@ -564,29 +700,6 @@ sub showstat { #{{{
        }
        return;
 } #}}}
        }
        return;
 } #}}}

-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;

 
 my %loaded;
 sub loadconfig { #{{{
 
 my %loaded;
 sub loadconfig { #{{{


@@ -816,13 +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


@@ -831,108 +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
                echo "Registering svn url: $url in $MR_CONFIG"
                url=$(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 in $MR_CONFIG"

-               mr -c "$MR_CONFIG" config "$(pwd)" checkout="svn co $url $basedir"
-       elif [ -d .git ]; then
-               url=$(LANG=C git-config --get remote.origin.url)
+               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 in $MR_CONFIG"
-               mr -c "$MR_CONFIG" 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
                echo "Registering bzr url: $url in $MR_CONFIG"
                url=$(cat .bzr/branch/parent)
                if [ -z "$url" ]; then
                        error "cannot determine bzr url"
                fi
                echo "Registering bzr url: $url in $MR_CONFIG"

-               mr -c "$MR_CONFIG" config "$(pwd)" checkout="bzr clone $url $basedir"
-       elif [ -d CVS ]; then
+               mr -c "$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 $root"
                repo=$(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)" \
+               mr -c "$MR_CONFIG" config "$PWD" \

                        checkout="cvs -d '$root' co -d $basedir $repo"
                        checkout="cvs -d '$root' co -d $basedir $repo"

-       else
-               error "unable to register this repo type"
-       fi
+               ;;
+       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"


@@ -945,3 +1174,5 @@ ed = echo "A horse is a horse, of course, of course.."
 T = echo "I pity the fool."
 right = echo "Not found."
 #}}}
 T = echo "I pity the fool."
 right = echo "Not found."
 #}}}

+
+# vim:sw=8:sts=0:ts=8:noet