Permalink
| #!/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 | |
| 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 |