#!/bin/sh
#
# mvparent.sh, Copyright © 2007, 2010, 2020 Matteo Cypriani
#
# This program is free software. It comes without any warranty, to
# the extent permitted by applicable law. You can redistribute it
# and/or modify it under the terms of the Do What The Fuck You Want
# To Public License, Version 2, as published by Sam Hocevar. See
# http://sam.zoy.org/wtfpl/COPYING for more details.
#
# Moves the contents of the given directory(ies) into its parent directory,
# then removes the directory(ies).

set -e
#set -x

if [ $# -lt 1 ] ; then
    echo "Usage: $(basename "$0") DIRECTORY [DIRECTORY [...]]" >&2
    exit 1
fi

while [ -n "$1" ] ; do
    dir="$1"
    shift

    if [ ! -d "$dir" ] ; then
        echo "Warning! \"$dir\" is not a directory: ignoring." >&2
        continue
    fi

    target="$(basename "$dir")"
    dir="$(dirname "$dir")"

    if [ "$target" = "." ] || [ "$target" = ".." ] ; then
        echo "Target cannot end by « . » or « .. »!" >&2
        exit 2
    fi

    echo "Moving the contents of « $dir/$target » into « $dir »..." >&2

    cd "$dir"

    if [ "$(echo "$target"/*)" != "$target/*" ] ; then
        mv -n "$target"/* .
    fi

    if [ "$(echo "$target"/.[!.]*)" != "$target/.[!.]*" ] ; then
        mv -n "$target"/.[!.]* .
    fi

    rmdir "$target"
    cd "$OLDPWD"
done

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