X-Git-Url: https://git.madduck.net/code/myrepos.git/blobdiff_plain/589208a7aa520f2cf570caddb2f0b2880e65129a..4496f723056b09b8d1dc17a40d0406232b58c646:/mr?ds=sidebyside

diff --git a/mr b/mr
index 26c6113..5c9d6a3 100755
--- a/mr
+++ b/mr
@@ -14,50 +14,80 @@ B<mr> [options] status
 
 B<mr> [options] commit [-m "message"]
 
+B<mr> [options] diff
+
+B<mr> [options] log
+
 B<mr> [options] action [params ...]
 
 =head1 DESCRIPTION
 
 B<mr> is a Multiple Repository management tool. It allows you to register a
 set of repositories in a .mrconfig file, and then checkout, update, or
-perform other actions on all of the repositories at once.
+perform other actions on the repositories as if they were one big
+respository.
 
 Any mix of revision control systems can be used with B<mr>, and you can
 define arbitrary actions for commands like "update", "checkout", or "commit".
 
+B<mr> cds into and operates on all registered repsitories at or below your
+working directory. Or, if you are in a subdirectory of a repository that
+contains no other registered repositories, it will stay in that directory,
+and work on only that repository,
+
 The predefined commands should be fairly familiar to users of any revision
 control system:
 
 =over 4
 
-=item checkout
+=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
+=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 log
+
+Show the commit log.
+
+=item list (or ls)
+
+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".
+"mr st" is equivilant to "mr status", and "mr up" is equivilant to "mr
+update"
+
+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
 
@@ -66,12 +96,11 @@ Actions can be abbreviated to any unambiguous subsctring, so
 =item -d directory
 
 Specifies the topmost directory that B<mr> should work in. The default is
-the current working directory. B<mr> will operate on all registered
-repositories at or under the directory.
+the current working directory.
 
 =item -c mrconfig
 
-Use the specified mrconfig file, instead of looking for on in your home
+Use the specified mrconfig file, instead of looking for one in your home
 directory.
 
 =item -v
@@ -91,15 +120,28 @@ registers several additional repositories.
 
 The .mrconfig file uses a variant of the INI file format. Lines starting with
 "#" are comments. Lines ending with "\" are continued on to the next line.
-Sections specify where each repository is located, relative to the
+
+The "default" section allows setting default values for the sections that
+come after it.
+
+The "alias" section allows adding aliases for actions. Each parameter
+is an alias, and its value is the action to use.
+
+All other sections specify where each repository is located, relative to the
 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
+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".
+
+Note that these shell commands are run in a "set -e" shell
 environment, where any additional parameters you pass are available in
-"$@". B<mr> cds into the repository directory before running
-a command, except for the "checkout" command, which is run in the parent
-of the repository directory, since the repository isn't checked out yet.
+"$@". The "checkout" command is run in the parent of the repository
+directory, since the repository isn't checked out yet. All other commands
+are run inside the repository, though not necessarily at the top of it.
+The "MR_REPO" environment variable is set to the path to the top of the
+repository.
 
 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.
@@ -107,13 +149,8 @@ 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
-handlers for the "update", "status", and "commit" actions, so normally
-you only need to specify what to do for "checkout".
+command, this can be a useful way to define shell functions for other commands
+to use.
 
 For example:
 
@@ -155,6 +192,7 @@ my $config="$ENV{HOME}/.mrconfig";
 my $verbose=0;
 my %config;
 my %knownactions;
+my %alias;
 
 Getopt::Long::Configure("no_permute");
 my $result=GetOptions(
@@ -163,7 +201,9 @@ 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);
@@ -171,85 +211,127 @@ 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 (! $knownactions{$action}) {
-	my @matches = grep { /^\Q$action\E/ } keys %knownactions;
-	if (@matches == 1) {
-		$action=$matches[0];
+if (! exists $knownactions{$action}) {
+	if (exists $alias{$action}) {
+		$action=$alias{$action};
 	}
 	else {
-		die "mr: ambiguous action \"$action\" (matches @matches)\n";
+		my @matches = grep { /^\Q$action\E/ }
+			keys %knownactions, keys %alias;
+		if (@matches == 1) {
+			$action=$matches[0];
+		}
+		elsif (@matches == 0) {
+			die "mr: unknown action \"$action\" (known actions: ".
+				join(", ", sort keys %knownactions).")\n";
+		}
+		else {
+			die "mr: ambiguous action \"$action\" (matches: ".
+				join(", ", @matches).")\n";
+		}
 	}
 }
 
-my (@failed, @successful, @skipped);
-my $first=1;
+if ($action eq 'help') {
+	exec($config{''}{default}{help});
+}
+
+# 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}}) {
 		next if $subdir eq 'default';
-		
 		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;
-			next;
-		}
-
-		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;
+		next if $dir ne $directory && $dir !~ /^\Q$directory\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 $dir=$topdir.$subdir;
+			my $d=$directory;
+			$dir.="/" unless $dir=~/\/$/;
+			$d.="/" unless $d=~/\/$/;
+			if ($d=~/^\Q$dir\E/) {
+				push @repos, [$dir, $topdir, $subdir];
+				last LEAF;
 			}
 		}
-
-		action($action, $dir, $topdir, $subdir);
-
 	}
+	$nochdir=1;
+}
+
+my (@failed, @successful, @skipped);
+foreach my $repo (@repos) {
+	action($action, @$repo);
 }
 
 sub action {
 	my ($action, $dir, $topdir, $subdir) = @_;
+	
+	my $lib= exists $config{$topdir}{$subdir}{lib} ?
+	                $config{$topdir}{$subdir}{lib} : "";
 
 	if ($action eq 'checkout') {
 		if (-d $dir) {
-			print "mr $action: $dir already exists, skipping checkout\n";
+			print "mr $action: $dir already exists, skipping checkout\n" if $verbose;
 			push @skipped, $dir;
 			return;
 		}
 		$dir=~s/^(.*)\/[^\/]+\/?$/$1/;
 	}
-	if ($action eq 'update') {
+	elsif ($action eq 'update') {
 		if (! -d $dir) {
 			return action("checkout", $dir, $topdir, $subdir);
 		}
 	}
-
-	if (! chdir($dir)) {
+	
+	$ENV{MR_REPO}=$dir;
+
+	if (exists $config{$topdir}{$subdir}{skip}) {
+		my $test="set -e;".$lib.$config{$topdir}{$subdir}{skip};
+		print "mr $action: running skip test $test\n" if $verbose;
+		my $ret=system($test);
+		if ($ret >> 8 == 0) {
+			print "mr $action: $dir skipped per config file\n" if $verbose;
+			push @skipped, $dir;
+			return;
+		}
+	}
+	
+	if (! $nochdir && ! chdir($dir)) {
 		print STDERR "mr $action: failed to chdir to $dir: $!\n";
-		push @skipped, $dir;
+		push @failed, $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; ".
-			(exists $config{$topdir}{$subdir}{lib} ?
-				$config{$topdir}{$subdir}{lib} : "").
+		if (! $nochdir) {
+			print "mr $action: $dir\n";
+		}
+		else {
+			print "mr $action: $dir (in subdir $directory)\n";
+		}
+		my $command="set -e; ".$lib.
 			"my_action(){ $config{$topdir}{$subdir}{$action} ; }; my_action ".
 			join(" ", map { s/\//\/\//g; s/"/\"/g; '"'.$_.'"' } @ARGV);
+		print STDERR "mr $action: running $command\n" if $verbose;
 		my $ret=system($command);
 		if ($ret != 0) {
-			print STDERR "mr $action: failed to run: $command\n" if $verbose;
+			print STDERR "mr $action: failed ($ret)\n" if $verbose;
 			push @failed, $topdir.$subdir;
 			if ($ret >> 8 != 0) {
 				print STDERR "mr $action: command failed\n";
@@ -261,6 +343,8 @@ sub action {
 		else {
 			push @successful, $dir;
 		}
+
+		print "\n";
 	}
 }
 
@@ -273,7 +357,10 @@ sub showstat {
 	}
 	return;
 }
-print "\nmr $action: finished (".join("; ",
+if (! @successful && ! @failed && ! @skipped) {
+	die "mr $action: no repositories found to work on\n";
+}
+print "mr $action: finished (".join("; ",
 	showstat($#successful+1, "successful", "successful"),
 	showstat($#failed+1, "failed", "failed"),
 	showstat($#skipped+1, "skipped", "skipped"),
@@ -345,28 +432,31 @@ sub loadconfig {
 			if (! defined $section) {
 				die "$f line $.: parameter ($parameter) not in section\n";
 			}
-			if (! exists $config{$dir}{$section} &&
-			      exists $config{$dir}{default}) {
+			if ($section ne 'alias' &&
+			    ! exists $config{$dir}{$section} &&
+			    exists $config{$dir}{default}) {
 				# copy in defaults
 				$config{$dir}{$section}={ %{$config{$dir}{default}} };
 			}
-			if ($parameter ne 'lib') {
-				$config{$dir}{$section}{$parameter}=$value;
-				$knownactions{$parameter}=1;
+			if ($section eq 'alias') {
+				$alias{$parameter}=$value;
+			}
+			elsif ($parameter eq 'lib') {
+				$config{$dir}{$section}{lib}.=$value." ; ";
 			}
 			else {
-				$config{$dir}{$section}{$parameter}.=$value." ; ";
+				$config{$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";
+			        }
 			}
-
-			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 $.: parse error\n";
+			die "$f line $.: parse error\n";
 		}
 	}
 	close $in;
@@ -379,6 +469,10 @@ sub loadconfig {
 # Finally, some useful actions that mr knows about by default.
 # These can be overridden in ~/.mrconfig.
 __DATA__
+[alias]
+	co = checkout
+	ci = commit
+	ls = list
 [default]
 lib = \
 	error() { \
@@ -386,26 +480,59 @@ lib = \
 		exit 1; \
 	}
 update = \
-	if [ -d .svn ]; then \
-		svn update; \
-	elif [ -d .git ]; then \
-		git pull origin master; \
+	if [ -d "$MR_REPO"/.svn ]; then \
+		svn update "$@"; \
+	elif [ -d "$MR_REPO"/.git ]; then \
+		git pull origin master "$@"; \
+	elif [ -d "$MR_REPO"/CVS ]; then \
+		cvs update "$@"; \
 	else \
 		error "unknown repo type"; \
 	fi
 status = \
-	if [ -d .svn ]; then \
-		svn status; \
-	elif [ -d .git ]; then \
-		git status || true; \
+	if [ -d "$MR_REPO"/.svn ]; then \
+		svn status "$@"; \
+	elif [ -d "$MR_REPO"/.git ]; then \
+		git status "$@" || true; \
+	elif [ -d "$MR_REPO"/CVS ]; then \
+		cvs status "$@"; \
 	else \
 		error "unknown repo type"; \
 	fi
 commit = \
-	if [ -d .svn ]; then \
+	if [ -d "$MR_REPO"/.svn ]; then \
 		svn commit "$@"; \
-	elif [ -d .git ]; then \
+	elif [ -d "$MR_REPO"/.git ]; then \
 		git commit -a "$@" && git push --all; \
+	elif [ -d "$MR_REPO"/CVS ]; then \
+		cvs commit "$@"; \
+	else \
+		error "unknown repo type"; \
+	fi
+diff = \
+	if [ -d "$MR_REPO"/.svn ]; then \
+		svn diff "$@"; \
+	elif [ -d "$MR_REPO"/.git ]; then \
+		git diff "$@"; \
+	elif [ -d "$MR_REPO"/CVS ]; then \
+		cvs diff "$@"; \
+	else \
+		error "unknown repo type"; \
+	fi
+log = \
+	if [ -d "$MR_REPO"/.svn ]; then \
+		svn log"$@"; \
+	elif [ -d "$MR_REPO"/.git ]; then \
+		git log "$@"; \
+	elif [ -d "$MR_REPO"/CVS ]; then \
+		cvs log "$@"; \
 	else \
 		error "unknown repo type"; \
 	fi
+list = true
+help = \
+	if [ ! -e "$MR_PATH" ]; then \
+		error "cannot find program path";\
+	fi; \
+	(pod2man -c mr "$MR_PATH" | man -l -) || \
+		error "pod2man or man failed"