update example

[code/myrepos.git] / mr

diff --git a/mr b/mr
index e1c8a063e3f626185e529a2c31b3ae1d488e77d9..8fa688b8476be2dc85f8fa5f3c9c5ae95eaadea1 100755 (executable)
--- a/mr
+++ b/mr
@@ -54,6 +54,11 @@ 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
 
 =over 4
@@ -77,9 +82,10 @@ Be verbose.
 
 =head1 FILES
 
-B<mr> is configured by .mrconfig files. It searches for .mrconfig files in
-your home directory, and in the root directory of each repository specified
-in a .mrconfig file. So you could have a ~/.mrconfig that registers a
+B<mr> is configured by .mrconfig files. It starts by reading the .mrconfig
+file in your home directory. Each repository specified in a .mrconfig file
+can also have its own .mrconfig file in its root directory that can
+optionally be used as well. So you could have a ~/.mrconfig that registers a
 repository ~/src, that itself contains a ~/src/.mrconfig file, that in turn
 registers several additional repositories.
 
@@ -97,6 +103,9 @@ 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.
+If the "chain" parameter is set and its command returns nonzero, 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.)
 
 The "default" section allows setting up default handlers for each action,
 and is overridden by the contents of other sections. mr contains default
@@ -107,6 +116,7 @@ For example:
 
   [src]
   checkout = svn co svn://svn.example.com/src/trunk src
+  chain = true
 
   [src/linux-2.6]
   # only check this out on kodama
@@ -132,6 +142,7 @@ my $directory=getcwd();
 my $config="$ENV{HOME}/.mrconfig";
 my $verbose=0;
 my %config;
+my %knownactions;
 
 Getopt::Long::Configure("no_permute");
 my $result=GetOptions(
@@ -142,13 +153,23 @@ 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 $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) {
@@ -189,7 +210,7 @@ sub action {
                if (-d $dir) {
                        print "mr $action: $dir already exists, skipping checkout\n";
                        push @skipped, $dir;
-                       next;
+                       return;
                }
                $dir=~s/^(.*)\/[^\/]+\/?$/$1/;
        }
@@ -209,7 +230,8 @@ sub action {
        }
        else {
                print "mr $action: in $dir\n";
-               my $command="set -e; my_action(){ $config{$topdir}{$subdir}{$action} ; }; my_action @ARGV";
+               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 $verbose;
@@ -288,10 +310,6 @@ sub loadconfig {
                next if /^\s*\#/ || /^\s*$/;
                if (/^\s*\[([^\]]*)\]\s*$/) {
                        $section=$1;
-                       if (length $dir && $section ne "default" &&
-                           -e $dir.$section."/.mrconfig") {
-                               push @toload, $dir.$section."/.mrconfig";
-                       }
                }
                elsif (/^\s*(\w+)\s*=\s*(.*)/) {
                        my $parameter=$1;
@@ -312,6 +330,14 @@ sub loadconfig {
                                $config{$dir}{$section}={ %{$config{$dir}{default}} };
                        }
                        $config{$dir}{$section}{$parameter}=$value;
+                       $knownactions{$parameter}=1;
+
+                       if ($parameter eq 'chain' &&
+                           length $dir && $section ne "default" &&
+                           -e $dir.$section."/.mrconfig" &&
+                           system($value) >> 8 == 0) {
+                               push @toload, $dir.$section."/.mrconfig";
+                       }
                }
                else {
                                die "$f line $.: parse error\n";
@@ -350,8 +376,7 @@ commit = \
        if [ -d .svn ]; then \
                svn commit "$@"; \
        elif [ -d .git ]; then \
-               git commit -a "$@"; \
-               git push --all; \
+               git commit -a "$@" && git push --all; \
        else \
                echo "mr commit: unknown repo type"; \
                exit 1; \