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merge in madduck's changes to fix fake-bare worktree checkout
[code/myrepos.git] / mr
diff --git a/mr b/mr
index b26802738f284d84e53c7f0d3536e488e11dc2cd..3dbacf0437ac6a4039b3db29ef499b27a310e402 100755 (executable)
--- a/mr
+++ b/mr
@@ -209,7 +209,11 @@ 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
 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. The "MR_CONFIG" environment variable is set to the .mrconfig file
+repository. (For the "register" action, "MR_REPO" is instead set to the 
+basename of the directory that should be created when checking the
+repository out.)
+
+The "MR_CONFIG" environment variable 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 should be modified to register the repo.
 
 that defines the repo being acted on, or, if the repo is not yet in a config
 file, the .mrconfig file that should be modified to register the repo.
 
@@ -255,6 +259,18 @@ to use.
 
 =back
 
 
 =back
 
+When looking for a command to run for a given action, mr first looks for
+a parameter with the same name as the action. If that is not found, it
+looks for a parameter named "rcs_action" (substituting in the name of the
+revision control system and the action). The name of the revision control
+system is itself determined by running each defined "rcs_test" action,
+until one succeeds.
+
+Internally, mr has settings for "git_update", "svn_update", etc. To change
+the action that is performed for a given revision control system, you can
+override these rcs specific actions. To add a new revision control system,
+you can just add rcs specific actions for it.
+
 =head1 AUTHOR
 
 Copyright 2007 Joey Hess <joey@kitenet.net>
 =head1 AUTHOR
 
 Copyright 2007 Joey Hess <joey@kitenet.net>
@@ -406,8 +422,22 @@ elsif ($action eq 'register') {
                        }
                }
        }
                        }
                }
        }
-       my $command="set -e; ".$config{''}{DEFAULT}{lib}."\n".
-               "my_action(){ $config{''}{DEFAULT}{$action}\n }; my_action ".
+       if (@ARGV) {
+               my $subdir=shift @ARGV;
+               if (! chdir($subdir)) {
+                       print STDERR "mr $action: failed to chdir to $subdir: $!\n";
+               }
+       }
+
+       $ENV{MR_REPO}=getcwd();
+       my $command=findcommand("register", '', '', 'DEFAULT');
+       if (! defined $command) {
+               die "mr $action: unknown repository type\n";
+       }
+
+       $ENV{MR_REPO}=~s/.*\/(.*)/$1/;
+       $command="set -e; ".$config{''}{DEFAULT}{lib}."\n".
+               "my_action(){ $command\n }; my_action ".
                join(" ", map { s/\//\/\//g; s/"/\"/g; '"'.$_.'"' } @ARGV);
        print STDERR "mr $action: running >>$command<<\n" if $verbose;
        exec($command) || die "exec: $!";
                join(" ", map { s/\//\/\//g; s/"/\"/g; '"'.$_.'"' } @ARGV);
        print STDERR "mr $action: running >>$command<<\n" if $verbose;
        exec($command) || die "exec: $!";
@@ -501,6 +531,51 @@ elsif (! @ok && @skipped) {
 }
 exit 0;
 
 }
 exit 0;
 
+sub rcs_test { #{{{
+       my ($action, $dir, $topdir, $subdir) = @_;
+
+       my $test="set -e\n";
+       foreach my $rcs_test (
+                       sort {
+                               length $a <=> length $b 
+                                         ||
+                                      $a cmp $b
+                       } grep { /_test/ } keys %{$config{$topdir}{$subdir}}) {
+               my ($rcs)=$rcs_test=~/(.*)_test/;
+               $test="my_$rcs_test() {\n$config{$topdir}{$subdir}{$rcs_test}\n}\n".$test;
+               $test.="if my_$rcs_test; then echo $rcs; fi\n";
+       }
+       $test=$config{$topdir}{$subdir}{lib}."\n".$test
+               if exists $config{$topdir}{$subdir}{lib};
+       
+       print "mr $action: running rcs test >>$test<<\n" if $verbose;
+       my $rcs=`$test`;
+       chomp $rcs;
+       if (! length $rcs) {
+               return undef;
+       }
+       else {
+               return $rcs;
+       }
+} #}}}
+       
+sub findcommand { #{{{
+       my ($action, $dir, $topdir, $subdir) = @_;
+
+       my $rcs=rcs_test(@_);
+
+       if (defined $rcs && 
+           exists $config{$topdir}{$subdir}{$rcs."_".$action}) {
+               return $config{$topdir}{$subdir}{$rcs."_".$action};
+       }
+       elsif (exists $config{$topdir}{$subdir}{$action}) {
+               return $config{$topdir}{$subdir}{$action};
+       }
+       else {
+               return undef;
+       }
+} #}}}
+
 sub action { #{{{
        my ($action, $dir, $topdir, $subdir) = @_;
 
 sub action { #{{{
        my ($action, $dir, $topdir, $subdir) = @_;
 
@@ -526,12 +601,15 @@ sub action { #{{{
                        return action("checkout", $dir, $topdir, $subdir);
                }
        }
                        return action("checkout", $dir, $topdir, $subdir);
                }
        }
-       
+
        $ENV{MR_REPO}=$dir;
 
        $ENV{MR_REPO}=$dir;
 
-       if (exists $config{$topdir}{$subdir}{skip}) {
+       my $skiptest=findcommand("skip", $dir, $topdir, $subdir);
+       my $command=findcommand($action, $dir, $topdir, $subdir);
+
+       if (defined $skiptest) {
                my $test="set -e;".$lib.
                my $test="set -e;".$lib.
-                       "my_action(){ $config{$topdir}{$subdir}{skip}\n }; my_action '$action'";
+                       "my_action(){ $skiptest\n }; my_action '$action'";
                print "mr $action: running skip test >>$test<<\n" if $verbose;
                my $ret=system($test);
                if ($ret != 0) {
                print "mr $action: running skip test >>$test<<\n" if $verbose;
                my $ret=system($test);
                if ($ret != 0) {
@@ -554,9 +632,16 @@ sub action { #{{{
                print STDERR "mr $action: failed to chdir to $dir: $!\n";
                return FAILED;
        }
                print STDERR "mr $action: failed to chdir to $dir: $!\n";
                return FAILED;
        }
-       elsif (! exists $config{$topdir}{$subdir}{$action}) {
-               print STDERR "mr $action: no defined $action command for $topdir$subdir, skipping\n";
-               return SKIPPED;
+       elsif (! defined $command) {
+               my $rcs=rcs_test(@_);
+               if (! defined $rcs) {
+                       print STDERR "mr $action: unknown repository type and no defined $action command for $topdir$subdir\n";
+                       return FAILED;
+               }
+               else {
+                       print STDERR "mr $action: no defined $action command for $rcs repository $topdir$subdir, skipping\n";
+                       return SKIPPED;
+               }
        }
        else {
                if (! $nochdir) {
        }
        else {
                if (! $nochdir) {
@@ -567,8 +652,8 @@ sub action { #{{{
                        $s=~s/^\Q$topdir$subdir\E\/?//;
                        print "mr $action: $topdir$subdir (in subdir $s)\n";
                }
                        $s=~s/^\Q$topdir$subdir\E\/?//;
                        print "mr $action: $topdir$subdir (in subdir $s)\n";
                }
-               my $command="set -e; ".$lib.
-                       "my_action(){ $config{$topdir}{$subdir}{$action}\n }; my_action ".
+               $command="set -e; ".$lib.
+                       "my_action(){ $command\n }; my_action ".
                        join(" ", map { s/\//\/\//g; s/"/\"/g; '"'.$_.'"' } @ARGV);
                print STDERR "mr $action: running >>$command<<\n" if $verbose;
                my $ret=system($command);
                        join(" ", map { s/\//\/\//g; s/"/\"/g; '"'.$_.'"' } @ARGV);
                print STDERR "mr $action: running >>$command<<\n" if $verbose;
                my $ret=system($command);
@@ -792,7 +877,12 @@ sub loadconfig { #{{{
                        }
                        else {
                                $config{$dir}{$section}{$parameter}=$value;
                        }
                        else {
                                $config{$dir}{$section}{$parameter}=$value;
-                               $knownactions{$parameter}=1;
+                               if ($parameter =~ /.*_(.*)/) {
+                                       $knownactions{$1}=1;
+                               }
+                               else {
+                                       $knownactions{$parameter}=1;
+                               }
                                if ($parameter eq 'chain' &&
                                    length $dir && $section ne "DEFAULT" &&
                                    -e $dir.$section."/.mrconfig") {
                                if ($parameter eq 'chain' &&
                                    length $dir && $section ne "DEFAULT" &&
                                    -e $dir.$section."/.mrconfig") {
@@ -935,6 +1025,12 @@ lib =
                echo "mr: $@" >&2
                exit 1
        }
                echo "mr: $@" >&2
                exit 1
        }
+       warning() {
+               echo "mr (warning): $@" >&2
+       }
+       info() {
+               echo "mr: $@" >&2
+       }
        hours_since() {
                if [ -z "$1" ] || [ -z "$2" ]; then
                        error "mr: usage: hours_since action num"
        hours_since() {
                if [ -z "$1" ] || [ -z "$2" ]; then
                        error "mr: usage: hours_since action num"
@@ -957,170 +1053,138 @@ lib =
                fi
        }
 
                fi
        }
 
-update =
-       if [ -d "$MR_REPO"/.svn ]; then
-               svn update "$@"
-       elif [ -d "$MR_REPO"/.git ] || [ "${MR_REPO%.git/}" != "$MR_REPO" ]; then
-               # this is a bug in git-fetch, which requires GIT_DIR set
-               [ "${MR_REPO%.git/}" != "$MR_REPO" ] && GIT_DIR="$MR_REPO" && export GIT_DIR
-               if [ -z "$@" ]; then
-                       git pull -t origin master
-               else
-                       git pull "$@"
-               fi
-               unset GIT_DIR
-       elif [ -d "$MR_REPO"/.bzr ]; then
-               bzr merge "$@"
-       elif [ -d "$MR_REPO"/CVS ]; then
-               cvs update "$@"
-       elif [ -d "$MR_REPO"/.hg ]; then
-               hg pull "$@" && hg update "$@"
-       elif [ -d "$MR_REPO"/_darcs ]; then
-               darcs pull -a "$@"
-       else
-               error "unknown repo type"
-       fi
-status =
-       if [ -d "$MR_REPO"/.svn ]; then
-               svn status "$@"
-       elif [ -d "$MR_REPO"/.git ] || [ "${MR_REPO%.git/}" != "$MR_REPO" ]; then
-               git status "$@" || true
-       elif [ -d "$MR_REPO"/.bzr ]; then
-               bzr status "$@"
-       elif [ -d "$MR_REPO"/CVS ]; then
-               cvs status "$@"
-       elif [ -d "$MR_REPO"/.hg ]; then
-               hg status "$@"
-       elif [ -d "$MR_REPO"/_darcs ]; then
-               darcs whatsnew -ls "$@"
-       else
-               error "unknown repo type"
+svn_test = test -d "$MR_REPO"/.svn
+git_test = test -d "$MR_REPO"/.git
+bzr_test = test -d "$MR_REPO"/.bzr
+cvs_test = test -d "$MR_REPO"/CVS
+hg_test  = test -d "$MR_REPO"/.hg
+darcs_test = test -d "$MR_REPO"/_darcs
+git_bare_test =
+       test -d "$MR_REPO"/refs/heads && test -d "$MR_REPO"/refs/tags &&
+       test -d "$MR_REPO"/objects && test -f "$MR_REPO"/config &&
+       test "$(GIT_CONFIG="$MR_REPO"/config git-config --get core.bare)" = true
+git_fake_bare_test = 
+       test -d "$MR_REPO"/refs/heads && test -d "$MR_REPO"/refs/tags &&
+       test -d "$MR_REPO"/objects && test -f "$MR_REPO"/config &&
+       test "$(GIT_CONFIG="$MR_REPO"/config git-config --get core.bare)" = false
+
+svn_update = svn update "$@"
+git_update = if [ "$@" ]; then git pull "$@"; else git pull -t origin master; fi
+bzr_update = bzr merge "$@"
+cvs_update = cvs update "$@"
+hg_update  = hg pull "$@" && hg update "$@"
+darcs_update = darcs pull -a "$@"
+git_fake_bare_update =
+       # all this is because of a bug in git-fetch, which requires GIT_DIR set
+       local git_dir_override; git_dir_override=.git
+       case "$(get_git_repo_type "$MR_REPO")" in
+               fake-bare) git_dir_override="$MR_REPO";;
+       esac
+       args="$@"
+       [ -z "$args" ] && args="-t origin master"
+       eval GIT_DIR="$git_dir_override" git pull "$args"
+
+svn_status = svn status "$@"
+git_status = git status "$@" || true
+bzr_status = bzr status "$@"
+cvs_status = cvs status "$@"
+hg_status  = hg status "$@"
+darcs_status = darcs whatsnew -ls "$@"
+git_fake_bare_status = git status "$@" || true
+
+svn_commit = svn commit "$@"
+git_commit = git commit -a "$@" && git push --all
+bzr_commit = bzr commit "$@" && bzr push
+cvs_commit = cvs commit "$@"
+hg_commit  = hg commit -m "$@" && hg push
+darcs_commit = darcs commit -a -m "$@" && darcs push -a
+git_fake_bare_commit = error "commit does not work for fake bare git repositories (yet)."
+
+svn_diff = svn diff "$@"
+git_diff = git diff "$@"
+bzr_diff = bzr diff "$@"
+cvs_diff = cvs diff "$@"
+hg_diff  = hg diff "$@"
+darcs_diff = darcs diff "$@"
+git_fake_bare_diff = error "diff does not work for fake bare git repositories (yet)."
+
+svn_log = svn log "$@"
+git_log = git log "$@"
+bzr_log = bzr log "$@"
+cvs_log = cvs log "$@"
+hg_log  = hg log "$@"
+darcs_log = darcs changes "$@"
+git_bare_log = git log "$@"
+git_fake_bare_log = git log "$@"
+
+svn_register =
+       url=$(LANG=C svn info . | grep -i ^URL: | cut -d ' ' -f 2)
+       if [ -z "$url" ]; then
+               error "cannot determine svn url"
        fi
        fi
-commit =
-       if [ -d "$MR_REPO"/.svn ]; then
-               svn commit "$@"
-       elif [ -d "$MR_REPO"/.git ]; then
-               git commit -a "$@" && git push --all
-       elif [ "${MR_REPO%.git/}" != "$MR_REPO" ]; then
-               error "commit does not work for fake bare git repositories (yet)."
-       elif [ -d "$MR_REPO"/.bzr ]; then
-               bzr commit "$@" && bzr push
-       elif [ -d "$MR_REPO"/CVS ]; then
-               cvs commit "$@"
-       elif [ -d "$MR_REPO"/.hg ]; then
-               hg commit -m "$@" && hg push
-       elif [ -d "$MR_REPO"/_darcs ]; then
-               darcs commit -a -m "$@" && darcs push -a
-       else
-               error "unknown repo type"
+       echo "Registering svn url: $url in $MR_CONFIG"
+       mr -c "$MR_CONFIG" config "`pwd`" checkout="svn co $url $MR_REPO"
+git_register = 
+       url="$(LANG=C git-config --get remote.origin.url)" || true
+       if [ -z "$url" ]; then
+               error "cannot determine git url"
        fi
        fi
-diff =
-       if [ -d "$MR_REPO"/.svn ]; then
-               svn diff "$@"
-       elif [ -d "$MR_REPO"/.git ]; then
-               git diff "$@"
-       elif [ "${MR_REPO%.git/}" != "$MR_REPO" ]; then
-               error "commit does not work for fake bare git repositories (yet)."
-       elif [ -d "$MR_REPO"/.bzr ]; then
-               bzr diff "$@"
-       elif [ -d "$MR_REPO"/CVS ]; then
-               cvs diff "$@"
-       elif [ -d "$MR_REPO"/.hg ]; then
-               hg diff "$@"
-       elif [ -d "$MR_REPO"/_darcs ]; then
-               darcs diff "$@"
-       else
-               error "unknown repo type"
+       echo "Registering git url: $url in $MR_CONFIG"
+       mr -c "$MR_CONFIG" config "`pwd`" checkout="git clone $url $MR_REPO"
+bzr_register =
+       url=$(cat .bzr/branch/parent)
+       if [ -z "$url" ]; then
+               error "cannot determine bzr url"
        fi
        fi
-log =
-       if [ -d "$MR_REPO"/.svn ]; then
-               svn log"$@"
-       elif [ -d "$MR_REPO"/.git ] || [ "${MR_REPO%.git/}" != "$MR_REPO" ]; then
-               git log "$@"
-       elif [ -d "$MR_REPO"/.bzr ]; then
-               bzr log "$@"
-       elif [ -d "$MR_REPO"/CVS ]; then
-               cvs log "$@"
-       elif [ -d "$MR_REPO"/.hg ]; then
-               hg log "$@"
-       elif [ -d "$MR_REPO"/_darcs ]; then
-               darcs changes "$@"
-       else
-               error "unknown repo type"
+       echo "Registering bzr url: $url in $MR_CONFIG"
+       mr -c "$MR_CONFIG" config "`pwd`" checkout="bzr clone $url $MR_REPO"
+cvs_register =
+       repo=$(cat CVS/Repository)
+       root=$(cat CVS/Root)
+       if [ -z "$root" ]; then
+               error "cannot determine cvs root"
+               fi
+       echo "Registering cvs repository $repo at root $root"
+       mr -c "$MR_CONFIG" config "`pwd`" checkout="cvs -d '$root' co -d $MR_REPO $repo"
+hg_register = 
+       url=$(hg showconfig paths.default)
+       echo "Registering mercurial repo url: $url in $MR_CONFIG"
+       mr -c "$MR_CONFIG" config "`pwd`" checkout="hg clone $url $MR_REPO"
+darcs_register = 
+       url=$(cat _darcs/prefs/defaultrepo)
+       echo "Registering darcs repository $url in $MR_CONFIG"
+       mr -c "$MR_CONFIG" config "`pwd`" checkout="darcs get $url $MR_REPO"
+git_bare_register = 
+       url="$(LANG=C GIT_CONFIG=config git-config --get remote.origin.url)" || true
+       if [ -z "$url" ]; then
+               error "cannot determine git url"
        fi
        fi
-register =
-       if [ -n "$1" ]; then
-               cd "$1"
+       mr -c "$MR_CONFIG" config "`pwd`" \
+               lib="GIT_WORK_TREE=$work_tree; export GIT_WORK_TREE"
+       echo "Registering git url: $url in $MR_CONFIG"
+       mr -c "$MR_CONFIG" config "`pwd`" checkout="git clone --bare $url $MR_REPO"
+git_fake_bare_register = 
+       url="$(LANG=C GIT_CONFIG=config git-config --get remote.origin.url)" || true
+       if [ -z "$url" ]; then
+               error "cannot determine git url"
        fi
        fi
-       basedir="$(basename $(pwd))"
-       if [ -d .svn ]; then
-               url=$(LANG=C svn info . | grep -i ^URL: | cut -d ' ' -f 2)
-               if [ -z "$url" ]; then
-                       error "cannot determine svn url"
-               fi
-               echo "Registering svn url: $url in $MR_CONFIG"
-               mr -c "$MR_CONFIG" config "$(pwd)" checkout="svn co $url $basedir"
-       elif [ -d .git ] || [ "${basedir%.git}" != "$basedir" ]; then
-               GIT_CONFIG=.git/config
-               [ ! -f $GIT_CONFIG ] && GIT_CONFIG=config
-               export GIT_CONFIG
-               url="$(LANG=C git-config --get remote.origin.url)"
-               if [ -z "$url" ]; then
-                       error "cannot determine git url"
-               fi
-               if [ $GIT_CONFIG = config ]; then
-                       # this seems like a bare repo as it has no worktree.
-                       # mr needs a worktree and cannot work with bare
-                       # repositories, so ensure that it's "fake bare" and
-                       # has a worktree configured.
-                       case "$(git-config --get core.bare)" in
-                               true) error "cannot register a bare git repository";;
-                       esac
-                       GIT_WORK_TREE="$(git-config --get core.worktree)" || :
-                       case "$GIT_WORK_TREE" in
-                               '') error "cannot register a fake bare git repository without core.worktree";;
-                               *)
-                                       if [ ! -d "$GIT_WORK_TREE" ]; then
-                                               error "git worktree $GIT_WORK_TREE does not exist"
-                                       fi;;
-                       esac
-                       suffix=" (with worktree $GIT_WORK_TREE)"
-                       mr -c "$MR_CONFIG" config "$(pwd)" \
-                               lib="GIT_WORK_TREE=$GIT_WORK_TREE; export GIT_WORK_TREE"
-                       unset GIT_WORK_TREE
-               fi
-               echo "Registering git url: $url in $MR_CONFIG${suffix:-}"
-               unset GIT_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 in $MR_CONFIG"
-               mr -c "$MR_CONFIG" config "$(pwd)" checkout="bzr clone $url $basedir"
-       elif [ -d CVS ]; then
-               repo=$(cat CVS/Repository)
-               root=$(cat CVS/Root)
-               if [ -z "$root" ]; then
-                       error "cannot determine cvs root"
-               fi
-               echo "Registering cvs repository $repo at root $root"
-               mr -c "$MR_CONFIG" config "$(pwd)" \
-                       checkout="cvs -d '$root' co -d $basedir $repo"
-       elif [ -d .hg ]; then
-               url=$(hg showconfig paths.default)
-               echo "Registering mercurial repo url: $url in $MR_CONFIG"
-               mr -c "$MR_CONFIG" config "$(pwd)" \
-                       checkout="hg clone $url $basedir"
-       elif [ -d _darcs ]; then
-               url=$(cat _darcs/prefs/defaultrepo)
-               echo "Registering darcs repository $url in $MR_CONFIG"
-               mr -c "$MR_CONFIG" config "$(pwd)" \
-                       checkout="darcs get $url $basedir"
-       else
-               error "unable to register this repo type"
+       worktree="$(git-config --get core.worktree)" || true
+       worktree="${worktree%%/}/"
+       if [ ! -d "$worktree" ]; then
+               error "git worktree $worktree does not exist"
        fi
        fi
+       mr -c "$MR_CONFIG" config "`pwd`" \
+               lib="GIT_WORK_TREE=$work_tree; export GIT_WORK_TREE"
+       echo "Registering git url: $url in $MR_CONFIG (with worktree $worktree)"
+       mr -c "$MR_CONFIG" config "`pwd`" \
+       checkout="
+       git clone --no-checkout $url $MR_REPO
+       cd $MR_REPO
+       git read-tree HEAD
+       git checkout-index -a --prefix='$work_tree' || true
+       git config core.worktree '$worktree'"
+       mv .git/* . && rmdir .git"
+
 help =
        if [ ! -e "$MR_PATH" ]; then
                error "cannot find program path"
 help =
        if [ ! -e "$MR_PATH" ]; then
                error "cannot find program path"
hacking on myrepos

Legalese

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