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105 lines
2.3 KiB
105 lines
2.3 KiB
#!/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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