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