X-Git-Url: https://git.madduck.net/code/myrepos.git/blobdiff_plain/7effaee66fb19a9fca46c0dca427e0ea2d5b1d90..8ddd51f2c761cb3fc33bd9c8aa509992e1561490:/mr

diff --git a/mr b/mr
index 9a8f750..ab71f36 100755
--- 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
 
@@ -48,9 +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.
 
@@ -61,12 +96,19 @@ 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
+There are three 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
+"lib" parameter can specify some shell code that will be run before each
+command, this can be a useful way to define shell functions other commands
+can use.
 
 The "default" section allows setting up default handlers for each action,
 and is overridden by the contents of other sections. mr contains default
@@ -77,12 +119,22 @@ 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
-  skip = test $(hostname) != kodama
+  skip = small
   checkout = git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
 
+  [default]
+  lib = \
+  small() {
+  	case "$(hostname)" in; \
+  	slug|snail); \
+  		return 0; ;; ; \
+  	esac; \
+  	return 1; \
+  }
+
 =head1 AUTHOR
 
 Copyright 2007 Joey Hess <joey@kitenet.net>
@@ -102,6 +154,7 @@ 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 +165,24 @@ 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 +191,7 @@ 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;
@@ -137,49 +201,67 @@ foreach my $topdir (sort keys %config) {
 		print "\n" unless $first;
 		$first=0;
 
-		if (exists $config{$topdir}{$subdir}{skip}) {
-			my $ret=system($config{$topdir}{$subdir}{skip});
-			if ($ret >> 8 == 0) {
-				print "mr $action: $dir skipped per config file\n" if $verbose;
-				push @skipped, $dir;
-				next;
-			}
-		}
+		action($action, $dir, $topdir, $subdir);
 
-		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: $!\n";
+	}
+}
+
+sub action {
+	my ($action, $dir, $topdir, $subdir) = @_;
+
+	if ($action eq 'checkout') {
+		if (-d $dir) {
+			print "mr $action: $dir already exists, skipping checkout\n" if $verbose;
 			push @skipped, $dir;
+			return;
 		}
-		elsif (! exists $config{$topdir}{$subdir}{$action}) {
-			print STDERR "mr $action: no defined $action command for $topdir$subdir, skipping\n";
+		$dir=~s/^(.*)\/[^\/]+\/?$/$1/;
+	}
+	elsif ($action eq 'update') {
+		if (! -d $dir) {
+			return action("checkout", $dir, $topdir, $subdir);
+		}
+	}
+	
+	if (! chdir($dir)) {
+		print STDERR "mr $action: failed to chdir to $dir: $!\n";
+		push @skipped, $dir;
+	}
+
+	if (exists $config{$topdir}{$subdir}{skip}) {
+		my $ret=system($config{$topdir}{$subdir}{skip});
+		if ($ret >> 8 == 0) {
+			print "mr $action: $dir skipped per config file\n" if $verbose;
 			push @skipped, $dir;
+			next;
 		}
-		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 (! 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; ".
+			(exists $config{$topdir}{$subdir}{lib} ?
+				$config{$topdir}{$subdir}{lib} : "").
+			"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 +275,17 @@ 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;
+if (@failed) {
+	exit 1;
+}
+elsif (! @successful && @skipped) {
+	exit 1;
+}
+exit 0;
 
 my %loaded;
 sub loadconfig {
@@ -222,6 +310,9 @@ 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
@@ -241,10 +332,6 @@ 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;
@@ -264,7 +351,20 @@ sub loadconfig {
 				# copy in defaults
 				$config{$dir}{$section}={ %{$config{$dir}{default}} };
 			}
-			$config{$dir}{$section}{$parameter}=$value;
+			if ($parameter ne 'lib') {
+				$config{$dir}{$section}{$parameter}=$value;
+				$knownactions{$parameter}=1;
+			}
+			else {
+				$config{$dir}{$section}{$parameter}.=$value." ; ";
+			}
+
+			if ($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";
@@ -277,18 +377,22 @@ sub loadconfig {
 	}
 }
 
-__DATA__
-# Some useful actions that mr knows about by default.
+# Finally, some useful actions that mr knows about by default.
 # These can be overridden in ~/.mrconfig.
+__DATA__
 [default]
+lib = \
+	error() { \
+		echo "mr: $@" >&2; \
+		exit 1; \
+	}
 update = \
 	if [ -d .svn ]; then \
 		svn update; \
 	elif [ -d .git ]; then \
 		git pull origin master; \
 	else \
-		echo "mr update: unknown RCS"; \
-		exit 1; \
+		error "unknown repo type"; \
 	fi
 status = \
 	if [ -d .svn ]; then \
@@ -296,15 +400,13 @@ status = \
 	elif [ -d .git ]; then \
 		git status || true; \
 	else \
-		echo "mr status: unknown RCS"; \
-		exit 1; \
+		error "unknown repo type"; \
 	fi
 commit = \
 	if [ -d .svn ]; then \
 		svn commit "$@"; \
 	elif [ -d .git ]; then \
-		git commit -a "$@"; \
+		git commit -a "$@" && git push --all; \
 	else \
-		echo "mr commit: unknown RCS"; \
-		exit 1; \
+		error "unknown repo type"; \
 	fi