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Fix fake-bare worktree checkout
[code/myrepos.git] / mr
diff --git a/mr b/mr
index b26802738f284d84e53c7f0d3536e488e11dc2cd..0e14168e10a3d965d7b9054b742b2870e404df17 100755 (executable)
--- a/mr
+++ b/mr
@@ -931,10 +931,17 @@ ls = list
 [DEFAULT]
 order = 10
 lib =
+       PWD="$pwd"
        error() {
                echo "mr: $@" >&2
                exit 1
        }
+       warning() {
+               echo "mr (warning): $@" >&2
+       }
+       info() {
+               echo "mr: $@" >&2
+       }
        hours_since() {
                if [ -z "$1" ] || [ -z "$2" ]; then
                        error "mr: usage: hours_since action num"
@@ -956,171 +963,205 @@ lib =
                        exit 1
                fi
        }
-
-update =
-       if [ -d "$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
+       get_git_repo_type()
+       {
+               if [ -d "$1"/.git ] && [ -d "$1"/.git/refs/heads ] &&
+                       [ -d "$1"/.git/objects ] && [ -f "$1"/.git/config ];
+                       then
+                       echo non-bare
+               elif [ -d "$1"/refs/heads ] && [ -d "$1"/refs/tags ] &&
+                       [ -d "$1"/objects ] && [ -f "$1"/config ]; then
+                       local bare
+                       bare="$(GIT_CONFIG="$1"/config git-config --get core.bare)"
+                       case "$bare" in
+                               true) echo bare;;
+                               false) echo fake-bare;;
+                               *) return 255;;
+                       esac
                else
-                       git pull "$@"
+                       return 1
                fi
-               unset GIT_DIR
-       elif [ -d "$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
+       }
+       is_git_repo() {
+               get_git_repo_type "$1" >/dev/null
+       }
+       get_repo_type() {
+               if [ -d "$1"/.svn ]; then
+                       echo svn
+               elif is_git_repo "$1"; then
+                       echo git
+               elif [ -d "$1"/.bzr ]; then
+                       echo bzr
+               elif [ -d "$1"/CVS ]; then
+                       echo CVS
+               elif [ -d "$1"/.hg ]; then
+                       echo hg
+               elif [ -d "$1"/_darcs ]; then
+                       echo darcs
+               else
+                       echo unknown
+               fi
+       }
+
+update =
+       case "$(get_repo_type "$MR_REPO")" in
+       svn) svn update "$@";;
+       git)
+               # 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 "$args"
+               ;;
+       bzr) bzr merge "$@";;
+       CVS) cvs update "$@";;
+       hg) hg pull "$@" && hg update "$@";;
+       darcs) darcs pull -a "$@";;
+       *) error "unknown repo type";;
+       esac
+
 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"
-       fi
+       case "$(get_repo_type "$MR_REPO")" in
+       svn) svn status "$@";;
+       git) git status "$@" || :;;
+       bzr) bzr status "$@";;
+       CVS) cvs status "$@";;
+       hg) hg status "$@";;
+       darcs) darcs whatsnew -ls "$@";;
+       *) error "unknown repo type";;
+       esac
+
 commit =
-       if [ -d "$MR_REPO"/.svn ]; then
-               svn commit "$@"
-       elif [ -d "$MR_REPO"/.git ]; then
+       case "$(get_repo_type "$MR_REPO")" in
+       svn) svn commit "$@";;
+       git)
+               case "$(get_git_repo_type "$MR_REPO")" in
+                       bare) error "cannot commit to bare git repositories";;
+                       fake-bare) error "commit does not work for fake bare git repositories (yet).";;
+               esac
                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 "$@" && darcs push -a
-       else
-               error "unknown repo type"
-       fi
+               ;;
+       bzr) bzr commit "$@" && bzr push;;
+       CVS) cvs commit "$@";;
+       hg) hg commit -m "$@" && hg push;;
+       darcs) darcs commit -a -m "$@" && darcs push -a;;
+       *) error "unknown repo type";;
+       esac
+
 diff =
-       if [ -d "$MR_REPO"/.svn ]; then
-               svn diff "$@"
-       elif [ -d "$MR_REPO"/.git ]; then
+       case "$(get_repo_type "$MR_REPO")" in
+       svn) svn diff "$@";;
+       git)
+               case "$(get_git_repo_type "$MR_REPO")" in
+                       bare) error "cannot diff in bare git repositories";;
+                       fake-bare) error "diff does not work for fake bare git repositories (yet).";;
+               esac
                git diff "$@"
-       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"
-       fi
+               ;;
+       bzr) bzr diff "$@";;
+       CVS) cvs diff "$@";;
+       hg) hg diff "$@";;
+       darcs) darcs diff "$@";;
+       *) error "unknown repo type";;
+       esac
+
 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"
-       fi
+       case "$(get_repo_type "$MR_REPO")" in
+       svn) svn log"$@";;
+       git) git log "$@";;
+       bzr) bzr log "$@";;
+       CVS) cvs log "$@";;
+       hg) hg log "$@";;
+       darcs) darcs changes "$@";;
+       *) error "unknown repo type";;
+       esac
+
 register =
        if [ -n "$1" ]; then
                cd "$1"
        fi
-       basedir="$(basename $(pwd))"
-       if [ -d .svn ]; then
+       basedir="${PWD##*/}"
+       case "$(get_repo_type .)" in
+       svn)
                url=$(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)"
+               mr -c "$MR_CONFIG" config "$PWD" checkout="svn co $url $basedir"
+               ;;
+       git)
+               local repo_type; repo_type="$(get_git_repo_type .)"
+               local config;
+               case "$repo_type" in
+                       non-bare) config=.git/config;;
+                       bare|fake-bare) config=config;;
+               esac
+               url="$(LANG=C GIT_CONFIG="$config" git-config --get remote.origin.url)" || :
                if [ -z "$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
+               local clone_opts add_cmd work_tree suffix
+               case "$repo_type" in
+                       fake-bare)
+                               # this seems like a fake bare repo and needs a worktree
+                               work_tree="$(git-config --get core.worktree)" || :
+                               work_tree="${work_tree%%/}/"
+                               if [ ! -d "$work_tree" ]; then
+                                       error "git worktree '$work_tree' does not exist"
+                               fi
+                               clone_opts=" --no-checkout"
+                               add_cmd="$add_cmd && cd $basedir"
+                               add_cmd="$add_cmd && git read-tree HEAD"
+                               add_cmd="$add_cmd && git checkout-index -a --prefix='$work_tree' || :"
+                               add_cmd="$add_cmd; git config core.worktree '$work_tree'"
+                               add_cmd="$add_cmd && mv .git/* . && rmdir .git"
+                               suffix=" (with worktree $work_tree)"
+                               ;;
+                       bare)
+                               clone_opts=" --bare"
+                               suffix=" (bare repository)"
+                               ;;
+               esac
                echo "Registering git url: $url in $MR_CONFIG${suffix:-}"
-               unset GIT_CONFIG
-               mr -c "$MR_CONFIG" config "$(pwd)" checkout="git clone $url $basedir"
-       elif [ -d .bzr ]; then
+               mr -c "$MR_CONFIG" config "$PWD" checkout="git clone${clone_opts:-} $url $basedir${add_cmd:-}"
+               ;;
+       bzr)
                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 $basedir"
-       elif [ -d CVS ]; then
+               mr -c "$MR_CONFIG" config "$PWD" checkout="bzr clone $url $basedir"
+               ;;
+       CVS)
                repo=$(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 "$(pwd)" \
+               mr -c "$MR_CONFIG" config "$PWD" \
                        checkout="cvs -d '$root' co -d $basedir $repo"
-       elif [ -d .hg ]; then
+               ;;
+       hg)
                url=$(hg showconfig paths.default)
                echo "Registering mercurial repo url: $url in $MR_CONFIG"
-               mr -c "$MR_CONFIG" config "$(pwd)" \
+               mr -c "$MR_CONFIG" config "$PWD" \
                        checkout="hg clone $url $basedir"
-       elif [ -d _darcs ]; then
+               ;;
+       darcs)
                url=$(cat _darcs/prefs/defaultrepo)
                echo "Registering darcs repository $url in $MR_CONFIG"
-               mr -c "$MR_CONFIG" config "$(pwd)" \
+               mr -c "$MR_CONFIG" config "$PWD" \
                        checkout="darcs get $url $basedir"
-       else
-               error "unable to register this repo type"
-       fi
+               ;;
+       *) error "unable to register this repo type";;
+       esac
+
 help =
        if [ ! -e "$MR_PATH" ]; then
                error "cannot find program path"