git/contrib/workdir/git-new-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 3
  14 then
  15         usage "$0 <repository> <new_workdir> [<branch>]"
  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 "$orig_git" 2>/dev/null &&
  24   git rev-parse --git-dir 2>/dev/null) ||
  25   die "\"$orig_git\" is not a git repository!"
  26
  27 if test "$git_dir" = ".git"
  28 then
  29         git_dir="$orig_git/.git"
  30 fi
  31
  32 # don't link to a workdir
  33 if test -L "$git_dir/config"
  34 then
  35         die "\"$orig_git\" is a working directory only, please specify" \
  36                 "a complete repository."
  37 fi
  38
  39 # make sure the the links use full paths
  40 git_dir=$(cd "$git_dir"; pwd)
  41
  42 # create the workdir
  43 mkdir -p "$new_workdir/.git" || die "unable to create \"$new_workdir\"!"
  44
  45 # create the links to the original repo.  explictly exclude index, HEAD and
  46 # logs/HEAD from the list since they are purely related to the current working
  47 # directory, and should not be shared.
  48 for x in config refs logs/refs objects info hooks packed-refs remotes rr-cache
  49 do
  50         case $x in
  51         */*)
  52                 mkdir -p "$(dirname "$new_workdir/.git/$x")"
  53                 ;;
  54         esac
  55         ln -s "$git_dir/$x" "$new_workdir/.git/$x"
  56 done
  57
  58 # now setup the workdir
  59 cd "$new_workdir"
  60 # copy the HEAD from the original repository as a default branch
  61 cp "$git_dir/HEAD" .git/HEAD
  62 # checkout the branch (either the same as HEAD from the original repository, or
  63 # the one that was asked for)
  64 git checkout -f $branch