From: martin f. krafft <madduck@madduck.net>
Date: Thu, 25 Oct 2007 19:57:17 +0000 (+0200)
Subject: Implement (initial) support for fake bare git repositories
X-Git-Url: https://git.madduck.net/code/myrepos.git/commitdiff_plain/36ce226caca56a82e8c56426c5bb9bfc47e9e642

Implement (initial) support for fake bare git repositories

Fake bare git repositories are non-bare git repositories with a detached
worktree. Thus, they require core.worktree set in the configuration. The
current implementation assumes that such repositories are named foo.git.

So far, support has only been added for register, update, log, and
status. Specifically diff and commit do not work yet.
---

diff --git a/mr b/mr
index 84f1a58..b268027 100755
--- a/mr
+++ b/mr
@@ -960,12 +960,15 @@ lib =
 update =
 	if [ -d "$MR_REPO"/.svn ]; then
 		svn update "$@"
-	elif [ -d "$MR_REPO"/.git ]; then
+	elif [ -d "$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
@@ -980,7 +983,7 @@ update =
 status =
 	if [ -d "$MR_REPO"/.svn ]; then
 		svn status "$@"
-	elif [ -d "$MR_REPO"/.git ]; then
+	elif [ -d "$MR_REPO"/.git ] || [ "${MR_REPO%.git/}" != "$MR_REPO" ]; then
 		git status "$@" || true
 	elif [ -d "$MR_REPO"/.bzr ]; then
 		bzr status "$@"
@@ -998,6 +1001,8 @@ commit =
 		svn commit "$@"
 	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 "$MR_REPO"/CVS ]; then
@@ -1014,6 +1019,8 @@ diff =
 		svn diff "$@"
 	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 "$MR_REPO"/CVS ]; then
@@ -1028,7 +1035,7 @@ diff =
 log =
 	if [ -d "$MR_REPO"/.svn ]; then
 		svn log"$@"
-	elif [ -d "$MR_REPO"/.git ]; then
+	elif [ -d "$MR_REPO"/.git ] || [ "${MR_REPO%.git/}" != "$MR_REPO" ]; then
 		git log "$@"
 	elif [ -d "$MR_REPO"/.bzr ]; then
 		bzr log "$@"
@@ -1053,12 +1060,37 @@ register =
 		fi
 		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)
+	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
-		echo "Registering git url: $url in $MR_CONFIG"
+		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)