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action abbrevs
[code/myrepos.git] / mr
diff --git a/mr b/mr
index 9a8f750a5406925cbe9afdf60deb808d5cf5097f..72c917c66353024481761a1ca8dae5ed2668702f 100755 (executable)
--- a/mr
+++ b/mr
@@ -12,7 +12,7 @@ B<mr> [options] update
 
 B<mr> [options] status
 
-B<mr> [options] commit -m "message"
+B<mr> [options] commit [-m "message"]
 
 B<mr> [options] action [params ...]
 
@@ -23,7 +23,41 @@ set of repositories in a .mrconfig file, and then checkout, update, or
 perform other actions on all of the repositories at once.
 
 Any mix of revision control systems can be used with B<mr>, and you can
-define arbitrary actions like "update", "checkout", or "commit".
+define arbitrary actions for commands like "update", "checkout", or "commit".
+
+The predefined commands should be fairly familiar to users of any revision
+control system:
+
+=over 4
+
+=item checkout
+
+Checks out all the registered repositories that are not already checked
+out.
+
+=item update
+
+Updates each registered repository from its configured remote repository.
+
+If a repository isn't checked out yet, it will first check it out.
+
+=item status
+
+Displays a status report for each registered repository, showing what
+uncommitted changes are present in the repository.
+
+=item commit
+
+Commits changes to each registered repository. (By default, changes
+are pushed to the remote repository too, when using distributed systems
+like git.)
+
+The optional -m parameter allows specifying a commit message.
+
+=back
+
+Actions can be abbreviated to any unambiguous subsctring, so
+"mr st" is equivilant to "mr status".
 
 =head1 OPTIONS
 
@@ -61,9 +95,10 @@ directory that contains the .mrconfig file.
 
 Within a section, each parameter defines a shell command to run to handle a
 given action. Note that these shell commands are run in a "set -e" shell
-environment, and B<mr> cds into the repository directory before running
-them, except for the "checkout" command, which is run in the parent of the
-repository directory, since the repository isn't checked out yet.
+environment, where any additional parameters you pass are available in
+"$@". B<mr> cds into the repository directory before running
+a command, except for the "checkout" command, which is run in the parent
+of the repository directory, since the repository isn't checked out yet.
 
 There are two special parameters. If the "skip" parameter is set and
 its command returns nonzero, then B<mr> will skip acting on that repository.
@@ -102,6 +137,7 @@ my $directory=getcwd();
 my $config="$ENV{HOME}/.mrconfig";
 my $verbose=0;
 my %config;
+my %knownactions;
 
 Getopt::Long::Configure("no_permute");
 my $result=GetOptions(
@@ -112,14 +148,24 @@ my $result=GetOptions(
 if (! $result || @ARGV < 1) {
        die("Usage: mr [-d directory] action [params ...]\n");
 }
-my $action=shift @ARGV;
 
 loadconfig(\*DATA);
 loadconfig($config);
 #use Data::Dumper;
 #print Dumper(\%config);
 
-my (@failures, @successes, @skipped);
+my $action=shift @ARGV;
+if (! $knownactions{$action}) {
+       my @matches = grep { /^\Q$action\E/ } keys %knownactions;
+       if (@matches == 1) {
+               $action=$matches[0];
+       }
+       else {
+               die "mr: ambiguous action \"$action\" (matches @matches)\n";
+       }
+}
+
+my (@failed, @successful, @skipped);
 my $first=1;
 foreach my $topdir (sort keys %config) {
        foreach my $subdir (sort keys %{$config{$topdir}}) {
@@ -128,6 +174,7 @@ foreach my $topdir (sort keys %config) {
                my $dir=$topdir.$subdir;
 
                if (defined $directory &&
+                   $dir ne $directory &&
                    $dir !~ /^\Q$directory\E\//) {
                        print "mr $action: $dir skipped per -d parameter ($directory)\n" if $verbose;
                        push @skipped, $dir;
@@ -146,40 +193,54 @@ foreach my $topdir (sort keys %config) {
                        }
                }
 
-               if ($action eq 'checkout') {
-                       if (-e $dir) {
-                               print "mr $action: $dir already exists, skipping checkout\n";
-                               push @skipped, $dir;
-                               next;
-                       }
-                       $dir=~s/^(.*)\/[^\/]+\/?$/$1/;
-               }
-               if (! chdir($dir)) {
-                       print STDERR "mr $action: failed to chdir to $dir: $!\n";
+               action($action, $dir, $topdir, $subdir);
+
+       }
+}
+
+sub action {
+       my ($action, $dir, $topdir, $subdir) = @_;
+
+       if ($action eq 'checkout') {
+               if (-d $dir) {
+                       print "mr $action: $dir already exists, skipping checkout\n";
                        push @skipped, $dir;
+                       next;
                }
-               elsif (! exists $config{$topdir}{$subdir}{$action}) {
-                       print STDERR "mr $action: no defined $action command for $topdir$subdir, skipping\n";
-                       push @skipped, $dir;
+               $dir=~s/^(.*)\/[^\/]+\/?$/$1/;
+       }
+       if ($action eq 'update') {
+               if (! -d $dir) {
+                       return action("checkout", $dir, $topdir, $subdir);
                }
-               else {
-                       print "mr $action: in $dir\n";
-                       my $command="set -e; my_action(){ $config{$topdir}{$subdir}{$action} ; }; my_action @ARGV";
-                       my $ret=system($command);
-                       if ($ret != 0) {
-                               print STDERR "mr $action: failed to run: $command\n" if $verbose;
-                               push @failures, $topdir.$subdir;
-                               if ($ret >> 8 != 0) {
-                                       print STDERR "mr $action: command failed\n";
-                               }
-                               elsif ($ret != 0) {
-                                       print STDERR "mr $action: command died ($ret)\n";
-                               }
+       }
+
+       if (! chdir($dir)) {
+               print STDERR "mr $action: failed to chdir to $dir: $!\n";
+               push @skipped, $dir;
+       }
+       elsif (! exists $config{$topdir}{$subdir}{$action}) {
+               print STDERR "mr $action: no defined $action command for $topdir$subdir, skipping\n";
+               push @skipped, $dir;
+       }
+       else {
+               print "mr $action: in $dir\n";
+               my $command="set -e; my_action(){ $config{$topdir}{$subdir}{$action} ; }; my_action ".
+                       join(" ", map { s/\//\/\//g; s/"/\"/g; '"'.$_.'"' } @ARGV);
+               my $ret=system($command);
+               if ($ret != 0) {
+                       print STDERR "mr $action: failed to run: $command\n" if $verbose;
+                       push @failed, $topdir.$subdir;
+                       if ($ret >> 8 != 0) {
+                               print STDERR "mr $action: command failed\n";
                        }
-                       else {
-                               push @successes, $dir;
+                       elsif ($ret != 0) {
+                               print STDERR "mr $action: command died ($ret)\n";
                        }
                }
+               else {
+                       push @successful, $dir;
+               }
        }
 }
 
@@ -193,11 +254,11 @@ sub showstat {
        return;
 }
 print "\nmr $action: finished (".join("; ",
-       showstat($#successes+1, "success", "successes"),
-       showstat($#failures+1, "failure", "failures"),
+       showstat($#successful+1, "successful", "successful"),
+       showstat($#failed+1, "failed", "failed"),
        showstat($#skipped+1, "skipped", "skipped"),
 ).")\n";
-exit @failures ? 1 : 0;
+exit @failed ? 1 : 0;
 
 my %loaded;
 sub loadconfig {
@@ -222,6 +283,9 @@ sub loadconfig {
                print "mr: loading config $f\n" if $verbose;
                open($in, "<", $f) || die "mr: open $f: $!\n";
                ($dir)=$f=~/^(.*\/)[^\/]+$/;
+               if (! defined $dir) {
+                       $dir=".";
+               }
                $dir=abs_path($dir)."/";
 
                # copy in defaults from first parent
@@ -265,6 +329,7 @@ sub loadconfig {
                                $config{$dir}{$section}={ %{$config{$dir}{default}} };
                        }
                        $config{$dir}{$section}{$parameter}=$value;
+                       $knownactions{$parameter}=1;
                }
                else {
                                die "$f line $.: parse error\n";
@@ -287,7 +352,7 @@ update = \
        elif [ -d .git ]; then \
                git pull origin master; \
        else \
-               echo "mr update: unknown RCS"; \
+               echo "mr update: unknown repo type"; \
                exit 1; \
        fi
 status = \
@@ -296,15 +361,15 @@ status = \
        elif [ -d .git ]; then \
                git status || true; \
        else \
-               echo "mr status: unknown RCS"; \
+               echo "mr status: unknown repo type"; \
                exit 1; \
        fi
 commit = \
        if [ -d .svn ]; then \
                svn commit "$@"; \
        elif [ -d .git ]; then \
-               git commit -a "$@"; \
+               git commit -a "$@" \
        else \
-               echo "mr commit: unknown RCS"; \
+               echo "mr commit: unknown repo type"; \
                exit 1; \
        fi