| #!/bin/sh |
| |
| usage () { |
| echo "usage:" $@ |
| exit 127 |
| } |
| |
| die () { |
| echo $@ |
| exit 128 |
| } |
| |
| failed () { |
| die "unable to create new workdir '$new_workdir'!" |
| } |
| |
| if test $# -lt 2 || test $# -gt 3 |
| then |
| usage "$0 <repository> <new_workdir> [<branch>]" |
| fi |
| |
| orig_git=$1 |
| new_workdir=$2 |
| branch=$3 |
| |
| # want to make sure that what is pointed to has a .git directory ... |
| git_dir=$(cd "$orig_git" 2>/dev/null && |
| git rev-parse --git-dir 2>/dev/null) || |
| die "Not a git repository: \"$orig_git\"" |
| |
| case "$git_dir" in |
| .git) |
| git_dir="$orig_git/.git" |
| ;; |
| .) |
| git_dir=$orig_git |
| ;; |
| esac |
| |
| # don't link to a configured bare repository |
| isbare=$(git --git-dir="$git_dir" config --bool --get core.bare) |
| if test ztrue = "z$isbare" |
| then |
| die "\"$git_dir\" has core.bare set to true," \ |
| " remove from \"$git_dir/config\" to use $0" |
| fi |
| |
| # don't link to a workdir |
| if test -h "$git_dir/config" |
| then |
| die "\"$orig_git\" is a working directory only, please specify" \ |
| "a complete repository." |
| fi |
| |
| # make sure the links in the workdir have full paths to the original repo |
| git_dir=$(cd "$git_dir" && pwd) || exit 1 |
| |
| # don't recreate a workdir over an existing directory, unless it's empty |
| if test -d "$new_workdir" |
| then |
| if test $(ls -a1 "$new_workdir/." | wc -l) -ne 2 |
| then |
| die "destination directory '$new_workdir' is not empty." |
| fi |
| cleandir="$new_workdir/.git" |
| else |
| cleandir="$new_workdir" |
| fi |
| |
| mkdir -p "$new_workdir/.git" || failed |
| cleandir=$(cd "$cleandir" && pwd) || failed |
| |
| cleanup () { |
| rm -rf "$cleandir" |
| } |
| siglist="0 1 2 15" |
| trap cleanup $siglist |
| |
| # create the links to the original repo. explicitly exclude index, HEAD and |
| # logs/HEAD from the list since they are purely related to the current working |
| # directory, and should not be shared. |
| for x in config refs logs/refs objects info hooks packed-refs remotes rr-cache svn reftable |
| do |
| # create a containing directory if needed |
| case $x in |
| */*) |
| mkdir -p "$new_workdir/.git/${x%/*}" |
| ;; |
| esac |
| |
| ln -s "$git_dir/$x" "$new_workdir/.git/$x" || failed |
| done |
| |
| # commands below this are run in the context of the new workdir |
| cd "$new_workdir" || failed |
| |
| # copy the HEAD from the original repository as a default branch |
| cp "$git_dir/HEAD" .git/HEAD || failed |
| |
| # the workdir is set up. if the checkout fails, the user can fix it. |
| trap - $siglist |
| |
| # checkout the branch (either the same as HEAD from the original repository, |
| # or the one that was asked for) |
| git checkout -f $branch |