refresh

#!/bin/sh
set -eu

echo__() {
    printf "%s\n" "$1"
}

linux_is_removable() {
    dev="$(echo__ "$1" | /usr/bin/sed -E 's/[0-9]+(p[0-9]+)?$//')"
    if [ "$dev" = "mmcblk" ]; then
        echo 1
        return
    fi

    removable_flag=/sys/block/"$dev"/removable

    if [ -r "$removable_flag" ]; then
        /usr/bin/cat -- "$removable_flag"
    else
        echo 0
    fi
}

linux_mount() {
    dev_name="${1}"
    point_dir="${2}"
    point="${2}/${3}"
    mount="${2}/mount_${3}"
    umount="${2}/umount_${3}"
    echo "#!/bin/sh" > "$mount"
    {
        echo "set -eu"
        echo ""
        echo "echo__() {"
        echo "    printf \"%s\\n\" \"\$1\""
        echo "}"
        echo ""
        echo "on_mount() {"
        echo "    echo \"#!/bin/sh\" > \"$umount\""
        echo "    {"
        echo "        echo \"set -eu\""
        echo "        echo \"/usr/bin/pumount -- \\\"$point\\\" || { /bin/sleep 3; exit 1; }\""
        echo "        echo \"/bin/rm -f -- \\\"$point\\\"\""
        echo "        echo \"/bin/rm -f -- \\\"$umount\\\"\""
        echo "    } >> \"$umount\""
        echo "    /bin/chmod a+x -- \"$umount\""
        echo "    echo__ \"/dev/$dev_name -> $point\""
        echo "}"
        echo ""
        echo "if ! [ -e \"$point\" ]; then"
        echo "    if /usr/bin/pmount -A -c utf8 -- /dev/\"$dev_name\" 2>/dev/null; then"
        echo "        /bin/mkdir -p -- \"$point_dir\" \\"
        echo "            && /bin/ln -s -- /media/\"$dev_name\" \"$point\" \\"
        echo "            && on_mount"
        echo "    fi"
        echo "else"
        echo "    echo__ \"Cannot mount /dev/$dev_name: $point already exist.\""
        echo "fi"
        echo "/bin/sleep 1"
    } >> "$mount"
    /bin/chmod a+x -- "$mount"
}

bsd_mount() {
    dev="${1}"
    point="${2}/${3}"
    mount="${2}/mount_${3}"
    umount="${2}/umount_${3}"
    echo "#!/bin/sh" > "$mount"
    {
        echo "set -eu"
        echo ""
        echo "echo__() {"
        echo "    printf \"%s\\n\" \"\$1\""
        echo "}"
        echo ""
        echo "on_mount() {"
        echo "    echo \"#!/bin/sh\" > \"$umount\""
        echo "    {"
        echo "        echo \"set -eu\""
        echo "        echo \"/sbin/umount -- \\\"$point\\\" || { read -rt 3 stub; exit 1; }\""
        echo "        echo \"/bin/rmdir -- \\\"$point\\\" || true\""
        echo "        echo \"/bin/rm -f -- \\\"$umount\\\"\""
        echo "    } >> \"$umount\""
        echo "    /bin/chmod a+x \"$umount\""
        echo "    echo__ \"$dev -> $point\""
        echo "}"
        echo ""
        echo "if { /usr/local/bin/ntfsinfo -m \"$dev\" > /dev/null 2>&1; }; then"
        echo "    if /bin/mkdir -p -- \"$point\"; then"
        echo "        if /sbin/mount_fusefs -- auto \"$point\" ntfs-3g \"$dev\" \"$point\"; then"
        echo "            on_mount"
        echo "        else"
        echo "            /bin/rmdir -- \"$point\" || true"
        echo "        fi"
        echo "    fi"
        echo "elif /usr/bin/file -Ls -- \"$dev\" | /usr/bin/grep -q FAT; then"
        echo "    if /bin/mkdir -p -- \"$point\"; then"
        echo "        if /sbin/mount_msdosfs -L \"\$LANG\" -D CP866 -o rw -- \"$dev\" \"$point\"; then"
        echo "            on_mount"
        echo "        else"
        echo "            /bin/rmdir -- \"$point\" || true"
        echo "        fi"
        echo "    fi"
        echo "fi"
        echo "read -rt 1 stub"
    } >> "$mount"
    /bin/chmod a+x "$mount"
}

if [ -x /bin/uname ]; then
    system="$(/bin/uname)"
elif [ -x /usr/bin/uname ]; then
    system="$(/usr/bin/uname)"
else
    echo "Cannot execute 'uname'."
    exit 1
fi

point_dir="$(dirname "$(realpath "$0")")"

case "$system" in
Linux)
    /bin/rm -f -- "$point_dir"/mount_*
    dev_list=$(/usr/bin/find /dev -maxdepth 1 -regextype egrep \
        -regex '/dev/(([sh]d[a-z]+[0-9]*)|(mmcblk[0-9]+p[0-9]+))' -print | /usr/bin/sort -r)
    for dev in $dev_list; do
        dev_name="$(/usr/bin/basename -- "$dev")"
        is_removable="$(linux_is_removable "$dev_name")"
        if [ "$is_removable" = 1 ]; then
            linux_mount "$dev_name" "$point_dir" "$dev_name"
        fi
    done
    ;;
FreeBSD)
    /bin/rm -f -- "$point_dir"/mount_*
    dev_list=$(/usr/bin/find -E /dev -depth 1 -regex '/dev/da[0-9]+([sp][0-9]+)?' -print | /usr/bin/sort -r)
    for dev in $dev_list; do
        dev_name="$(/usr/bin/basename -- "$dev")"
        bsd_mount "$dev" "$point_dir" "$dev_name"
    done
    ;;
*)
    echo "Unknown system '$system'."
esac