# Copyright 1999-2015 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id$

EAPI="5"

PYTHON_COMPAT=( python2_7 )

DISTUTILS_OPTIONAL="y"
DISTUTILS_SINGLE_IMPL="y"
DISTUTILS_IN_SOURCE_BUILD="y"

inherit base java-pkg-2 mono autotools distutils-r1 multilib toolchain-funcs versionator

DESCRIPTION="A parser generator for C++, C#, Java, and Python"
HOMEPAGE="http://www.antlr2.org/"
SRC_URI="http://www.antlr2.org/download/${P}.tar.gz"

LICENSE="public-domain"
SLOT="0"
KEYWORDS="~amd64 ~arm ~ppc ~ppc64 ~x86 ~amd64-fbsd ~x86-fbsd ~x86-freebsd ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~x86-macos ~sparc-solaris ~sparc64-solaris ~x64-solaris ~x86-solaris"
IUSE="doc debug examples mono +cxx +java python script source static-libs"

REQUIRED_USE="python? ( ${PYTHON_REQUIRED_USE} )"

# TODO do we actually need jdk at runtime?
RDEPEND="python? ( ${PYTHON_DEPS} )
	>=virtual/jdk-1.6
	mono? ( dev-lang/mono )"
DEPEND="${RDEPEND}
	>=sys-devel/automake-1.15
	script? ( !dev-util/pccts )
	source? ( app-arch/zip )"

PATCHES=( "${FILESDIR}"/${PV}-{gcc-4.3,gcc-4.4,makefixes}.patch )

make_shared_lib() {
	local soname=$(basename "${1%.a}")$(get_libname $(get_major_version))
	einfo "Making ${soname}"
	[[ ${CHOST} == *-darwin* ]] \
		&& make_shared_lib_macho "${soname}" "$1" "$2"\
		|| make_shared_lib_elf "${soname}" "$1" "$2"
}

make_shared_lib_elf() {
	local soname=$1 archive=$2 cc=$3
	${cc:-$(tc-getCXX)} ${LDFLAGS} \
		-shared -Wl,-soname="${soname}" \
		-Wl,--whole-archive "${archive}" -Wl,--no-whole-archive \
		-o $(dirname "${archive}")/"${soname}" || return 1
}

make_shared_lib_macho() {
	local soname=$1 archive=$2 cc=$3
	${cc:-$(tc-getCXX)} ${LDFLAGS} \
		-dynamiclib -install_name "${EPREFIX}/usr/$(get_libdir)/${soname}" \
		-force_load "${archive}" \
		-o $(dirname "${archive}")/"${soname}" || return 1
}

pkg_setup() {
	java-pkg-2_pkg_setup

	if use python ; then
		python-single-r1_pkg_setup
	fi
}

src_prepare() {
	base_src_prepare

	sed -i \
		-e 's/install:.*this-install/install:/' \
		lib/cpp/src/Makefile.in || die

	use static-libs || epatch "${FILESDIR}/${PV}-static-libs-fix.patch"

	# See bug #468540, this can be removed once bug #469150 is fixed.
	sed -i 's/tlib lib ar/ar/' configure.in || die
	eautoreconf
}

src_configure() {
	# don't ask why, but this is needed for stuff to get built properly
	# across the various JDKs
	JAVACFLAGS="+ ${JAVACFLAGS}"

	# mcs for https://bugs.gentoo.org/show_bug.cgi?id=172104
	CSHARPC="mcs" econf $(use_enable java) \
		$(use_enable python) \
		$(use_enable mono csharp) \
		$(use_enable debug) \
		$(use_enable examples) \
		$(use_enable cxx) \
		--enable-verbose
}

src_compile() {
	emake CXXFLAGS="${CXXFLAGS} -fPIC"
	if use cxx; then
		pushd lib/cpp/src > /dev/null
		make_shared_lib libantlr.a || die
		if use static-libs; then
			make clean
			emake
		fi
		popd > /dev/null
	fi

	if use python ; then
		pushd "${S}"/lib/python > /dev/null
		distutils-r1_src_compile
		popd > /dev/null
	fi
}

src_install() {
	dobin scripts/antlr-config

	if use cxx ; then
		pushd lib/cpp > /dev/null
		einstall
		dolib.so src/libantlr$(get_libname $(get_major_version))
		dosym libantlr$(get_libname $(get_major_version)) \
			/usr/$(get_libdir)/libantlr$(get_libname)
		use static-libs && dolib.a src/libantlr.a
		newdoc AUTHORS{,.cpp}
		newdoc ChangeLog{,.cpp}
		newdoc TODO{,.cpp}
		popd > /dev/null
	fi

	if use java ; then
		java-pkg_dojar antlr/antlr.jar
		use script && java-pkg_dolauncher antlr --main antlr.Tool
		use source && java-pkg_dosrc antlr
		use doc && java-pkg_dohtml -r doc/*
	fi

	if use mono ; then
		pushd lib > /dev/null
		dodir /usr/$(get_libdir)/antlr/
		insinto /usr/$(get_libdir)/antlr/
		doins antlr.astframe.dll
		doins antlr.runtime.dll
		sed -e "s|@prefix@|${EPREFIX}/usr|" \
			-e 's|@exec_prefix@|${prefix}|' \
			-e "s|@libdir@|\$\{exec_prefix\}/$(get_libdir)/antlr|" \
			-e 's|@libs@|-r:${libdir}/antlr.astframe.dll -r:${libdir}/antlr.runtime.dll|' \
			-e "s|@VERSION@|${PV}|" \
			"${FILESDIR}"/antlr.pc.in > antlr.pc
		insinto /usr/$(get_libdir)/pkgconfig
		doins antlr.pc
		popd > /dev/null
	fi

	if use python ; then
		pushd "${S}"/lib/python > /dev/null
		distutils-r1_src_install
		popd > /dev/null
	fi

	if use examples ; then
		find "${S}"/examples -iname Makefile\* -exec rm \{\} \;
		insinto /usr/share/doc/${PF}/examples
		use cxx && doins -r "${S}"/examples/cpp
		use java && doins -r "${S}"/examples/java
		use mono && doins -r "${S}"/examples/csharp
		use python && doins -r "${S}"/examples/python
	fi

	dodoc README.txt
}