#!/bin/sh

DIR="$(readlink -f "$PWD")"

# traverse back to the root and do some check
while [ "$DIR" != "/" ]
do

    # if we have a .git dir, we're at the root of a project
    if [ -d "$DIR/.git" ]
    then
            echo "$DIR"
            exit 0
    fi

    # we stop at these hard coded directories
    if    [ "$DIR" == "$(readlink -f "$(</var/cache/pmark)")" ] \
       || [ "$DIR" == "/home/dpb/usr/ports" ] \
       || [ "$DIR" == "/usr/ports" ] \
       || [ "$DIR" == "/usr/src/sys" ] \
       || [ "$DIR" == "/usr/src" ] \
       || [ "$DIR" == "/usr/www" ] \
       || [ "$DIR" == "/usr/xenocara" ] \
       || [ "$DIR" == "$HOME/.config" ] \
       || [ "$DIR" == "$HOME" ]
    then
            echo "$DIR"
            exit 0
    fi

    # If above doesn't apply, we check if we have a Makefile but the
    # parent directory hasn't. Then this is the root of a project.
    if    [ -f "$DIR/Makefile" ] \
       && [ ! -f "$DIR/../Makefile" ]
    then
            echo "$DIR"
            exit 0
    fi

    # Again, if the current directory has a CVS dir, but the parent has
    # not, then this is the root of a project
    if    [ -d "$DIR/CVS" ] \
       && [ ! -d "$DIR/../CVS" ]
    then
            echo "$DIR"
            exit 0
    fi
    DIR=$(readlink -f "$DIR/..")
done

# nothing found, then we return the current directory
echo "$PWD"