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introkun/git-new-workdir-win.sh

Created May 19, 2014 07:20
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  1. introkun created this gist May 19, 2014.
    88 changes: 88 additions & 0 deletions git-new-workdir-win.sh
    View file
    Original file line number Diff line number Diff line change
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    #!/bin/sh

    usage () {
    echo "usage:" $@
    exit 127
    }

    die () {
    echo $@
    exit 128
    }

    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

    # don't recreate a workdir over an existing repository
    if test -e "$new_workdir"
    then
    die "destination directory '$new_workdir' already exists."
    fi

    # make sure the links use full paths
    git_dir=$(cd "$git_dir"; cmd.exe /c cd)

    # create the workdir
    mkdir -p "$new_workdir/.git" || die "unable to create \"$new_workdir\"!"

    # 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
    case $x in
    */*)
    mkdir -p "$(dirname "$new_workdir/.git/$x")"
    ;;
    esac
    if test -d "$git_dir/$x"
    then
    is_dir="/d"
    else
    is_dir=
    fi
    cmd.exe /c "mklink $is_dir \"$new_workdir/.git/$x\" \"$git_dir/$x\""
    done

    # now setup the workdir
    cd "$new_workdir"
    # copy the HEAD from the original repository as a default branch
    cp "$git_dir/HEAD" .git/HEAD
    # checkout the branch (either the same as HEAD from the original repository, or
    # the one that was asked for)
    git checkout -f $branch