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