bin/git-new-module-workdir

   1 #!/bin/sh
   2
   3 usage () {
   4         echo "usage:" $@
   5         exit 127
   6 }
   7
   8 die () {
   9         echo $@
  10         exit 128
  11 }
  12
  13 if test $# -lt 2 || test $# -gt 2
  14 then
  15         usage "$0 <repository> <new_workdir>"
  16 fi
  17
  18 orig_git=$1
  19 new_workdir=$2
  20 branch=$3
  21
  22 # want to make sure that what is pointed to has a .git directory ...
  23 git_dir=$(cd "$orig_git" 2>/dev/null &&
  24   git rev-parse --git-dir 2>/dev/null) ||
  25   die "Not a git repository: \"$orig_git\""
  26
  27 case "$git_dir" in
  28 .git)
  29         git_dir="$orig_git/.git"
  30         ;;
  31 .)
  32         git_dir=$orig_git
  33         ;;
  34 esac
  35
  36 # don't link to a configured bare repository
  37 isbare=$(git --git-dir="$git_dir" config --bool --get core.bare)
  38 if test ztrue = z$isbare
  39 then
  40         die "\"$git_dir\" has core.bare set to true," \
  41                 " remove from \"$git_dir/config\" to use $0"
  42 fi
  43
  44 # don't link to a workdir
  45 if test -h "$git_dir/config"
  46 then
  47         die "\"$orig_git\" is a working directory only, please specify" \
  48                 "a complete repository."
  49 fi
  50
  51 if ! test -d ".git"
  52 then
  53    die "the current directory is not a git workdir"
  54 fi
  55
  56 # don't recreate a workdir over an existing repository
  57 if test -e "$new_workdir/.git"
  58 then
  59         die "destination directory '$new_workdir' already exists."
  60 fi
  61
  62 # make sure the links use full paths
  63 git_dir=$(cd "$git_dir"; pwd)
  64
  65 # create the workdir
  66 mkdir -p ".git/modules/$new_workdir" || die "unable to create \".git/modules/$new_workdir\"!"
  67
  68 # create the links to the original repo.  explicitly exclude index, HEAD and
  69 # logs/HEAD from the list since they are purely related to the current working
  70 # directory, and should not be shared.
  71 ## LEM: add branches; deprecated, but safer to include it
  72 for x in branches config refs logs/refs objects info hooks packed-refs remotes rr-cache svn
  73 do
  74         case $x in
  75         */*)
  76                 mkdir -p "$(dirname ".git/modules/$new_workdir/$x")"
  77                 ;;
  78         esac
  79         ln -s "$git_dir/$x" ".git/modules/$new_workdir/$x"
  80 done
  81
  82 # now setup the workdir
  83 mkdir -p "$new_workdir"
  84 cd "$new_workdir"
  85 echo "gitdir: ../.git/modules/$new_workdir" > .git
  86 # copy the HEAD from the original repository as a default branch
  87 cp "$git_dir/HEAD" ../.git/modules/$new_workdir/HEAD
  88 # don't checkout the branch, a subsequent "git module update" will do it