incomplete work to try to guess the right mrconfig to register to

madduck suggested that mr register should register to the closest
mrconfig file. This branch is a start at trying to do that, by redefining
MR_CONFIG to hold either the config file that registers the given repo,
or for unregistered repos, the closest mrconfig file

Current issues:
- absolute path is always passed in MR_CONFIG, which makes mr config
  add new repos with absolute paths
- MR_CONFIG is not set to the closest mrconfig file for unregistered repos
  yet. The problem is, if I do this, then it will override the setting
  from -c, and so it won't be possible to use mr register to register in an
  explicitly specified config file.

I think it also has some other bugs. For example, the current mapping
between directory and config file only allows for one config file in a given
directory. Which might not be true if you're using mr -c.

As far as I can take it for now, so stashing away in this branch.

diff --git a/mr b/mr
index 886aa65b92d89162f90c87e655806aeca9bc1976..14f41656fee0844aac030602aea22c059e0ba0d2 100755 (executable)
--- a/mr
+++ b/mr
@@ -195,8 +195,11 @@ environment, where any additional parameters you pass are available in
 "$@". 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, and "MR_CONFIG" is set to the topmost .mrconfig file used.
+repository, and "MR_CONFIG" is set to the .mrconfig file that defines the
+repo being acted on, or, if the repo is not yet in a config file, the
+.mrconfig file that mr thinks it should be added to.
 
 A few parameters have special meanings:
 
@@ -266,6 +269,7 @@ my $verbose=0;
 my $stats=0;
 my $no_recurse=0;
 my %config;
+my %configfiles;
 my %knownactions;
 my %alias;
 
@@ -399,9 +403,10 @@ foreach my $repo (@repos) {
 
 sub action { #{{{
        my ($action, $dir, $topdir, $subdir) = @_;
-       
-       my $lib= exists $config{$topdir}{$subdir}{lib} ?
-                       $config{$topdir}{$subdir}{lib}."\n" : "";
+
+       $ENV{MR_CONFIG}=$configfiles{$topdir};
+       my $lib=exists $config{$topdir}{$subdir}{lib} ?
+                      $config{$topdir}{$subdir}{lib}."\n" : "";
 
        if (exists $config{$topdir}{$subdir}{deleted}) {
                my $test="set -e;".$lib.$config{$topdir}{$subdir}{deleted};
@@ -646,6 +651,9 @@ sub loadconfig { #{{{
                        else {
                                $config{$dir}{$section}{$parameter}=$value;
                                $knownactions{$parameter}=1;
+                               if (! exists $configfiles{$dir}) {
+                                       $configfiles{$dir}=abs_path($f);
+                               }
                                if ($parameter eq 'chain' &&
                                    length $dir && $section ne "DEFAULT" &&
                                    -e $dir.$section."/.mrconfig") {
@@ -871,21 +879,21 @@ register =
                if [ -z "$url" ]; then
                        error "cannot determine svn url"
                fi
-               echo "Registering svn url: $url"
+               echo "Registering svn url: $url in $MR_CONFIG"
                mr -c "$MR_CONFIG" config "$(pwd)" checkout="svn co $url $basedir"
        elif [ -d .git ]; then
                url=$(LANG=C git-config --get remote.origin.url)
                if [ -z "$url" ]; then
                        error "cannot determine git url"
                fi
-               echo "Registering git url: $url"
+               echo "Registering git url: $url in $MR_CONFIG"
                mr -c "$MR_CONFIG" config "$(pwd)" checkout="git clone $url $basedir"
        elif [ -d .bzr ]; then
                url=$(cat .bzr/branch/parent)
                if [ -z "$url" ]; then
                        error "cannot determine bzr url"
                fi
-               echo "Registering bzr url: $url"
+               echo "Registering bzr url: $url in $MR_CONFIG"
                mr -c "$MR_CONFIG" config "$(pwd)" checkout="bzr clone $url $basedir"
        else
                error "unable to register this repo type"