heh.sh

# Usage: convert os_device
# Convert an OS device to the corresponding GRUB drive.
# This part is OS-specific.
convert () {
    # First, check if the device file exists.
    if test -e "$1"; then
        :
    else
        echo "$1: Not found or not a block device." 1>&2
        exit 1
    fi

    # Break the device name into the disk part and the partition part.
    case "$host_os" in
    linux*)
        tmp_disk=`echo "$1" | grep -v '/mapper/control$' |
                grep -v '/mapper/[[:alnum:]]\+-[[:alnum:]]\+$' | uniq |
                sed -e 's%\([shv]d[a-z]\)[0-9]*$%\1%' \
                                  -e 's%\(d[0-9]*\)p[0-9]*$%\1%' \
                                  -e 's%\(fd[0-9]*\)$%\1%' \
                                  -e 's%/part[0-9]*$%/disc%' \
                                  -e 's%\(c[0-7]d[0-9]*\).*$%\1%' \
          -e 's%\(/mapper/[[:alpha:]]\+[[:digit:]]*\)p[[:digit:]]\+$%\1%' \
          -e 's%\(/mapper/isw_[[:alpha:]_]\+[[:alpha:]]\+[[:digit:]]\+\)p[[:digit:]]\+$%\1%' \
          -e 's%\(/mapper/[[:alpha:]]\+_[[:alpha:]]\+\)[[:digit:]]\+$%\1%' \
          -e 's%\(nvme[0-9]*n[0-9]*\)p[0-9]*$%\1%'`
        tmp_part=`echo "$1" | grep -v '/mapper/control$' |
                grep -v '/mapper/[[:alnum:]]\+-[[:alnum:]]\+$' | uniq |
                sed -e 's%.*/[shv]d[a-z]\([0-9]*\)$%\1%' \
                                  -e 's%.*d[0-9]*p%%' \
                                  -e 's%.*/fd[0-9]*$%%' \
                                  -e 's%.*/floppy/[0-9]*$%%' \
                                  -e 's%.*/\(disc\|part\([0-9]*\)\)$%\2%' \
                                  -e 's%.*c[0-7]d[0-9]*%%' \
          -e 's%.*/mapper/[[:alpha:]]\+[[:digit:]]*p\([[:digit:]]\+\)$%\1%' \
          -e 's%.*/mapper/isw_[[:alpha:]_]\+[[:alpha:]]\+[[:digit:]]\+p\([[:digit:]]\+\)$%\1%' \
          -e 's%.*/mapper/[[:alpha:]]\+_[[:alpha:]]\+\([[:digit:]]\+\)$%\1%' \
          -e 's%.*/nvme[0-9]*n[0-9]*p\([0-9]*\)%\1%' |
                grep -v '.*/mapper/.*'`
    <snip>
    esac