#!/bin/sh

# populates a directory with host directories.
# modify and use as needed.

[ "$1" ] || echo "usage: mkbootstrap <target path>"

if [ ! -d "$1" ]; then
    echo "$1 is not a directory!" >&2
    exit 1
fi
dest="$1"

case "$dest" in
    /usr/*|/lib/*|/libexec/*|/etc/*|/bin/*|/share/*)
	echo "destination path cannot be a subpath of the source paths." >&2
	exit 1
	;;
esac

up() {
    printf "$(echo "checking $1 .........." | head -c 20)"
    if [ -d "/$1" ] && [ ! -d "$dest/$1" ]; then
	printf " merging $1\n"
        # is this a symlink to a directory?
        [ -h "/$1" ] \
        && cp -a "/$1" "$dest/" \
        || mkdir "$dest/$1" && lmr "/$1" "$dest/$1"
    else
	printf " skipping $1\n"
    fi
}

up lib
up libexec
up etc
up bin
up share
mkdir -p "$dest/boot"

# force bootstrap directory into lix os-style directory structure.
lmr -f /usr $dest \
&& echo "merged /usr into $dest" \
|| echo "did not lmr /usr into $dest"

lmr -f $dest/local $dest \
&& echo "merged $dest/local into $dest" \
|| echo "did not lmr $dest/local into $dest"

rm -fr $dest/local \
&& echo "removed $dest/local" \
|| echo "did not remove $dest/local"

lmr -f $dest/sbin $dest/bin \
&& echo "merged $dest/sbin into $dest/bin" \
|| echo "did not lmr $dest/sbin into $dest/bin"

rm -fr $dest/sbin \
&& echo "removed $dest/sbin" \
|| echo "did not remove $dest/sbin"

ln -sf . $dest/usr \
&& echo "ln'ed $dest/usr to ." \
|| echo "did not ln $dest/usr to ."

ln -sf ./bin $dest/sbin \
&& echo "ln'ed $dest/sbin to ./bin" \
|| echo "did not ln $dest/sbin to ./bin"