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  insteadOf = madduck:

add usage example
[code/myrepos.git] / mrconfig.git-fake-bare
1 # An example of how to add a new revision control system type to mr.
2 # git fake bare repositories have a detached workspace. One potential
3 # application is storing dotfiles in git, keeping them checked out in
4 # one $HOME, but checked into different git repositories. This file adds
5 # support for them, separate from the normal git support.
6
7 # To make mr use this file, add a line like this inside the [DEFAULT]
8 # section of your ~/.mrconfig
9 #include = cat /path/to/mrconfig.git-fake-bare
10
11 # And an example repo using it would look something like:
12 #[.dotfiles]
13 #lib = git_fake_bare_worktree $HOME
14 #checkout = git_fake_bare_checkout git://... .dotfiles
15
16 lib =
17         # called to tell git where the worktree is
18         git_fake_bare_worktree() {
19                 GIT_WORK_TREE="$1"; export GIT_WORK_TREE
20         }
21         # git doesn't have an easy way to check out such a repo, so
22         # do it by hand
23         git_fake_bare_checkout() {
24                 set -x
25                 url="$1"
26                 repo="$2"
27                 GIT_WORK_TREE= git clone --no-checkout "$url" "$repo"
28                 cd "$repo"
29                 mkdir -p "$GIT_WORK_TREE"
30                 git read-tree HEAD
31                 git config core.worktree "$GIT_WORK_TREE"
32                 git checkout-index -a --prefix="$worktree" || true
33                 mv .git/* .
34                 rmdir .git
35         }
36
37 git_fake_bare_test = 
38         test -d "$MR_REPO"/refs/heads && test -d "$MR_REPO"/refs/tags &&
39         test -d "$MR_REPO"/objects && test -f "$MR_REPO"/config &&
40         test "$(GIT_CONFIG="$MR_REPO"/config git-config --get core.bare)" = false
41
42 git_fake_bare_update =
43         # all this is because of a bug in git-fetch, which requires GIT_DIR set
44         local git_dir_override; git_dir_override=.git
45         case "$(get_git_repo_type "$MR_REPO")" in
46                 fake-bare) git_dir_override="$MR_REPO";;
47         esac
48         args="$@"
49         [ -z "$args" ] && args="-t origin master"
50         eval GIT_DIR="$git_dir_override" git pull "$args"
51
52 git_fake_bare_status = git status "$@" || true
53
54 git_fake_bare_commit = error "commit does not work for fake bare git repositories (yet)."
55
56 git_fake_bare_diff = error "diff does not work for fake bare git repositories (yet)."
57
58 git_fake_bare_log = git log "$@"
59
60 git_fake_bare_register = 
61         url="$(LANG=C GIT_CONFIG=config git-config --get remote.origin.url)" || true
62         if [ -z "$url" ]; then
63                 error "cannot determine git url"
64         fi
65         worktree="$(git-config --get core.worktree)" || true
66         if [ -z "$worktree" ]; then
67                 error "git worktree is not set"
68         fi
69         worktree="${worktree%%/}/"
70         if [ ! -d "$worktree" ]; then
71                 error "git worktree $worktree does not exist"
72         fi
73         mr -c "$MR_CONFIG" config "`pwd`" lib="git_fake_bare_worktree '$worktree'"
74         echo "Registering git url: $url in $MR_CONFIG (with worktree $worktree)"
75         mr -c "$MR_CONFIG" config "`pwd`" checkout="git_fake_bare_checkout '$url' '$MR_REPO'"