add mr list command, and clarify what repos it will choose to act on

[code/myrepos.git] / mr

diff --git a/mr b/mr
index f26b144687cac43bc09abea6ce6ec992e85026f8..823e3df3ea1f989c9930684e8a12528409af804a 100755 (executable)
--- a/mr
+++ b/mr
@@ -14,6 +14,8 @@ B<mr> [options] status
 
 B<mr> [options] commit [-m "message"]
 
+B<mr> [options] diff
+
 B<mr> [options] action [params ...]
 
 =head1 DESCRIPTION
@@ -32,33 +34,52 @@ control system:
 
 =item checkout (or co)
 
-Checks out all the registered repositories that are not already checked
-out.
+Checks out any repositories that are not already checked out.
 
 =item update
 
-Updates each registered repository from its configured remote repository.
+Updates each 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
+Displays a status report for each repository, showing what
 uncommitted changes are present in the repository.
 
 =item commit (or ci)
 
-Commits changes to each registered repository. (By default, changes
-are pushed to the remote repository too, when using distributed systems
-like git.)
+Commits changes to each 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.
 
+=item diff
+
+Show a diff of uncommitted changes.
+
+=item list
+
+List the repositories that mr will act on.
+
+=item help
+
+Displays this help.
+
 =back
 
 Actions can be abbreviated to any unambiguous subsctring, so
 "mr st" is equivilant to "mr status".
 
+B<mr> operates on all registered repsitories at or below your working
+directory. Or, if you are in a subdirectory of a repository, it will act on
+only that repository.
+
+Additional parameters can be passed to other commands than "commit", they
+will be passed on unchanged to the underlying revision control system.
+This is mostly useful if the repositories mr will act on all use the same
+revision control system.
+
 =head1 OPTIONS
 
 =over 4
@@ -167,7 +188,9 @@ my $result=GetOptions(
        "v" => \$verbose,
 );
 if (! $result || @ARGV < 1) {
-       die("Usage: mr [-d directory] action [params ...]\n");
+       die("Usage: mr [-d directory] action [params ...]\n".
+           "(Use mr help for man page.)\n");
+
 }
 
 loadconfig(\*DATA);
@@ -175,6 +198,11 @@ loadconfig($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 $knownactions{$action}) {
@@ -193,6 +221,10 @@ if (! exists $knownactions{$action}) {
        }
 }
 
+if ($action eq 'help') {
+       exec($config{''}{default}{help});
+}
+
 # handle being in a subdir of a repository
 foreach my $topdir (sort keys %config) {
        foreach my $subdir (sort keys %{$config{$topdir}}) {
@@ -203,7 +235,6 @@ foreach my $topdir (sort keys %config) {
 }
 
 my (@failed, @successful, @skipped);
-my $first=1;
 foreach my $topdir (sort keys %config) {
        foreach my $subdir (sort keys %{$config{$topdir}}) {
                next if $subdir eq 'default';
@@ -217,7 +248,6 @@ foreach my $topdir (sort keys %config) {
                }
 
                action($action, $dir, $topdir, $subdir);
-
        }
 }
 
@@ -260,7 +290,7 @@ sub action {
                push @skipped, $dir;
        }
        else {
-               print "mr $action: in $dir\n";
+               print "mr $action: $dir\n";
                my $command="set -e; ".$lib.
                        "my_action(){ $config{$topdir}{$subdir}{$action} ; }; my_action ".
                        join(" ", map { s/\//\/\//g; s/"/\"/g; '"'.$_.'"' } @ARGV);
@@ -279,8 +309,7 @@ sub action {
                        push @successful, $dir;
                }
 
-               print "\n" unless $first;
-               $first=0;
+               print "\n";
        }
 }
 
@@ -293,7 +322,6 @@ sub showstat {
        }
        return;
 }
-print "\n" unless $first;
 print "mr $action: finished (".join("; ",
        showstat($#successful+1, "successful", "successful"),
        showstat($#failed+1, "failed", "failed"),
@@ -436,3 +464,18 @@ commit = \
        else \
                error "unknown repo type"; \
        fi
+diff = \
+       if [ -d .svn ]; then \
+               svn diff "$@"; \
+       elif [ -d .git ]; then \
+               git diff "$@"; \
+       else \
+               error "unknown repo type"; \
+       fi
+list = true
+help = \
+       if [ ! -e "$MR_PATH" ]; then \
+               error "cannot find program path";\
+       fi; \
+       (pod2man -c mr "$MR_PATH" | man -l -) || \
+               error "pod2man or man failed"