#!/bin/bash
#
# 2006-2011, Krzysztof Pawlik - nelchael@gentoo.org
#
# This script generates file for User Libraries import for Eclipse.
# You can find that option in:
#  Window -> Preferences -> Java -> Build Path -> User Libraries
#
# All your installed Java packages that register any jar are exported.
#

function get_name() {
	echo "$(echo "${1}" | sed -e 's,^.*/share/\(.*\)/package.env$,\1,')"
}

function get_desc() {
	grep ^DESCRIPTION "${1}" | cut -d '=' -f 2- | sed -e 's/"//g' | sed -e 's,--,,g'
}

function get_libdir() {
	grep ^LIBRARY_PATH "${1}" | cut -d '=' -f 2- | sed -e 's/"//g'
}

function find_source() {
	find "$(dirname "${1}")" -name '*-src.zip' | head -n 1
}

echo '<?xml version="1.0" encoding="UTF-8"?>'
echo '<eclipse-userlibraries version="2">'

for package in /usr/share/*/package.env; do
	packageName="$(get_name "${package}")"

	echo '  <library name="'"${packageName}"'" systemlibrary="false">'
	echo '    <!-- '"$(get_desc "${package}")"' -->'

	gotSource=no

	for jar in $(grep ^CLASSPATH "${package}" | cut -d = -f 2- | sed -e 's/"//g' | sed -e 's/:/ /g'); do
		echo -n '    <archive path="'"${jar}"'"'

		if [[ -n "$(find_source "${package}")" ]]; then
			echo -n ' source="'"$(find_source "${package}")"'"'
			gotSource=yes
		fi

		if [[ -n "$(get_libdir "${package}")" ]]; then
			echo -n ' nativelibpaths="'"$(get_libdir "${package}")"'"'
		fi

		echo '/>'
	done

	[[ "${gotSource}" = "no" ]] && echo "Package without source: ${packageName}" >&2

	echo '  </library>'
done

echo '</eclipse-userlibraries>'