#!/bin/sh
#
# ax-make: Alex' Simple Makefile System
# Copyright (c)2014 Alexander Barton (alex@barton.de)
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#

NAME=`basename "$0"`

Usage() {
	echo "Usage: $NAME [<lib-dir>]"
	echo
	echo "  <lib-dir>    Library directory. Default: current working directory."
	echo
	exit 2
}

while true; do
	case "$1" in
		"-"*)
			Usage
			;;
		*)
			break
			;;
	esac
	shift
done

[ $# -gt 1 ] && Usage

[ -n "$1" ] && LIB_D="$1" || LIB_D="."

if [ -r "/usr/local/share/ax-make/Makefile.ax" ]; then
	MAKEFILE_AX="/usr/local/share/ax-make/Makefile.ax"
elif [ -r "/usr/share/ax-make/Makefile.ax" ]; then
	MAKEFILE_AX="/usr/share/ax-make/Makefile.ax"
else
	echo "$NAME: No source \"Makefile.ax\" found!"
	echo "$NAME: Please check your installation of \"ax-make\" and try again."
	exit 1
fi

# -- Makefile.ax --

if [ ! -d "$LIB_D" ]; then
	mkdir -pv "$LIB_D" || exit 1
fi

target="$LIB_D/`basename "$MAKEFILE_AX"`"
if [ ! -e "$target" -o "$MAKEFILE_AX" -nt "$target" ]; then
	echo "Updating \"$target\" ..."
	cp -v "$MAKEFILE_AX" "$target" || exit 1
else
	echo "Makefile \"$target\" is up to date."
fi

# -- Project Makefile's ---

if [ ! -e "Makefile" ]; then
echo "Creating \"Makefile\" ..."
[ "$LIB_D" != "." ] && subdirs="$LIB_D" || subdirs=""
cat >"Makefile" <<EOF
#
# Makefile
#

SUBDIRS = $subdirs

include $LIB_D/Makefile.ax
EOF
fi

if [ "$LIB_D" != "." -a ! -e "$LIB_D/Makefile" ]; then
echo "Creating \"$LIB_D/Makefile\" ..."
cat >"$LIB_D/Makefile" <<EOF
#
# Makefile
#

include Makefile.ax
EOF
fi

# --- Standard project files ---

if [ ! -e AUTHORS ]; then
	if git --version >/dev/null 2>&1; then
		echo "Creating \"AUTHORS\" file ..."
		echo "`git config user.name` <`git config user.email`>" >>AUTHORS
	fi
fi

for f in AUTHORS COPYING README; do
	if [ ! -e "$f" ]; then
		echo "Creating empty \"$f\" file ..."
		touch "$f"
	fi
done

exit 0