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

# @ECLASS: perl-module.eclass
# @MAINTAINER:
# perl@gentoo.org
# @AUTHOR:
# Seemant Kulleen <seemant@gentoo.org>
# Andreas K. Huettel <dilfridge@gentoo.org>
# @BLURB: eclass for perl modules
# @DESCRIPTION:
# The perl-module eclass is designed to allow easier installation of perl
# modules, and their incorporation into the Gentoo Linux system.
# All exported functions from perl-functions.eclass (inherited here)
# explicitly also belong to the interface of perl-module.eclass.

inherit eutils multiprocessing unpacker perl-functions

PERL_EXPF="src_unpack src_prepare src_configure src_compile src_test src_install"

case "${EAPI:-0}" in
	5)
		[[ ${CATEGORY} == "perl-core" ]] && \
			PERL_EXPF+=" pkg_postinst pkg_postrm"

		case "${GENTOO_DEPEND_ON_PERL:-yes}" in
		yes)
			case "${GENTOO_DEPEND_ON_PERL_SUBSLOT:-yes}" in
			yes)
				DEPEND="dev-lang/perl:=[-build(-)]"
				;;
			*)
				DEPEND="dev-lang/perl[-build(-)]"
				;;
			esac
			RDEPEND="${DEPEND}"
			;;
		esac

		case "${PERL_EXPORT_PHASE_FUNCTIONS:-yes}" in
			yes)
				EXPORT_FUNCTIONS ${PERL_EXPF}
				;;
			no)
				debug-print "PERL_EXPORT_PHASE_FUNCTIONS=no"
				;;
			*)
				die "PERL_EXPORT_PHASE_FUNCTIONS=${PERL_EXPORT_PHASE_FUNCTIONS} is not supported by perl-module.eclass"
				;;
		esac
		;;
	6)
		[[ ${CATEGORY} == "perl-core" ]] && \
			PERL_EXPF+=" pkg_postinst pkg_postrm"

		case "${GENTOO_DEPEND_ON_PERL:-yes}" in
			yes)
				DEPEND="dev-lang/perl:="
				RDEPEND="dev-lang/perl:="
				;;
			noslotop)
				DEPEND="dev-lang/perl"
				RDEPEND="dev-lang/perl"
				;;
		esac

		if [[ "${GENTOO_DEPEND_ON_PERL_SUBSLOT}" ]]; then
			eerror "GENTOO_DEPEND_ON_PERL_SUBSLOT is banned in EAPI=6. If you don't want a slot operator"
			die    "set GENTOO_DEPEND_ON_PERL=noslotop instead."
		fi

		if [[ "${PERL_EXPORT_PHASE_FUNCTIONS}" ]]; then
			eerror "PERL_EXPORT_PHASE_FUNCTIONS is banned in EAPI=6. Use perl-module.eclass if you need"
			die    "phase functions, perl-functions.eclass if not."
		fi

		EXPORT_FUNCTIONS ${PERL_EXPF}
		;;
	*)
		die "EAPI=${EAPI} is not supported by perl-module.eclass"
		;;
esac

LICENSE="${LICENSE:-|| ( Artistic GPL-1+ )}"

if [[ -n ${MY_PN} || -n ${MY_PV} || -n ${MODULE_VERSION} ]] ; then
	: ${MY_P:=${MY_PN:-${PN}}-${MY_PV:-${MODULE_VERSION:-${PV}}}}
	S=${MY_S:-${WORKDIR}/${MY_P}}
fi

[[ -z "${SRC_URI}" && -z "${MODULE_A}" ]] && \
	MODULE_A="${MY_P:-${P}}.${MODULE_A_EXT:-tar.gz}"
[[ -z "${SRC_URI}" && -n "${MODULE_AUTHOR}" ]] && \
	SRC_URI="mirror://cpan/authors/id/${MODULE_AUTHOR:0:1}/${MODULE_AUTHOR:0:2}/${MODULE_AUTHOR}/${MODULE_SECTION:+${MODULE_SECTION}/}${MODULE_A}"
[[ -z "${HOMEPAGE}" ]] && \
	HOMEPAGE="http://search.cpan.org/dist/${MY_PN:-${PN}}/"

SRC_PREP="no"
SRC_TEST="skip"
PREFER_BUILDPL="yes"

pm_echovar=""

# @FUNCTION: perl-module_src_unpack
# @USAGE: perl-module_src_unpack
# @DESCRIPTION:
# Unpack the ebuild tarball(s).
# This function is to be called during the ebuild src_unpack() phase.
perl-module_src_unpack() {
	debug-print-function $FUNCNAME "$@"

	unpacker_src_unpack
}

# @FUNCTION: perl-module_src_prepare
# @USAGE: perl-module_src_prepare
# @DESCRIPTION:
# Get the ebuild sources ready.
# This function is to be called during the ebuild src_prepare() phase.
perl-module_src_prepare() {
	debug-print-function $FUNCNAME "$@"
	[[ ${PATCHES[@]} ]] && epatch "${PATCHES[@]}"
	debug-print "$FUNCNAME: applying user patches"
	epatch_user
	if [[ ${PERL_RM_FILES[@]} ]]; then
		debug-print "$FUNCNAME: stripping unneeded files"
		perl_rm_files "${PERL_RM_FILES[@]}"
	fi
	perl_fix_osx_extra
	esvn_clean
}

# @FUNCTION: perl-module_src_configure
# @USAGE: perl-module_src_configure
# @DESCRIPTION:
# Configure the ebuild sources.
# This function is to be called during the ebuild src_configure() phase.
perl-module_src_configure() {
	debug-print-function $FUNCNAME "$@"

	[[ ${SRC_PREP} = yes ]] && return 0
	SRC_PREP="yes"

	perl_check_env

	perl_set_version

	[[ -z ${pm_echovar} ]] && export PERL_MM_USE_DEFAULT=1
	# Disable ExtUtils::AutoInstall from prompting
	export PERL_EXTUTILS_AUTOINSTALL="--skipdeps"

	if [[ $(declare -p myconf 2>&-) != "declare -a myconf="* ]]; then
		local myconf_local=(${myconf})
	else
		local myconf_local=("${myconf[@]}")
	fi

	if [[ ( ${PREFER_BUILDPL} == yes || ! -f Makefile.PL ) && -f Build.PL ]] ; then
		if grep -q '\(use\|require\)\s*Module::Build::Tiny' Build.PL ; then
			einfo "Using Module::Build::Tiny"
			if [[ ${DEPEND} != *dev-perl/Module-Build-Tiny* && ${PN} != Module-Build-Tiny ]]; then
				eqawarn "QA Notice: The ebuild uses Module::Build::Tiny but doesn't depend on it."
				eqawarn " Add dev-perl/Module-Build-Tiny to DEPEND!"
				if [[ -n ${PERLQAFATAL} ]]; then
					eerror "Bailing out due to PERLQAFATAL=1";
					die
				fi
			fi
		else
			einfo "Using Module::Build"
			if [[ ${DEPEND} != *virtual/perl-Module-Build* && ${DEPEND} != *dev-perl/Module-Build* && ${PN} != Module-Build ]] ; then
				eqawarn "QA Notice: The ebuild uses Module::Build but doesn't depend on it."
				eqawarn " Add dev-perl/Module-Build to DEPEND!"
				if [[ -n ${PERLQAFATAL} ]]; then
					eerror "Bailing out due to PERLQAFATAL=1";
					die
				fi
			fi
		fi
		set -- \
			--installdirs=vendor \
			--libdoc= \
			--destdir="${D}" \
			--create_packlist=0 \
			"${myconf_local[@]}"
		einfo "perl Build.PL" "$@"
		perl Build.PL "$@" <<< "${pm_echovar}" \
				|| die "Unable to build!"
	elif [[ -f Makefile.PL ]] ; then
		einfo "Using ExtUtils::MakeMaker"
		set -- \
			PREFIX=${EPREFIX}/usr \
			INSTALLDIRS=vendor \
			INSTALLMAN3DIR='none' \
			DESTDIR="${D}" \
			"${myconf_local[@]}"
		einfo "perl Makefile.PL" "$@"
		perl Makefile.PL "$@" <<< "${pm_echovar}" \
				|| die "Unable to build!"
	fi
	if [[ ! -f Build.PL && ! -f Makefile.PL ]] ; then
		einfo "No Make or Build file detected..."
		return
	fi
}

# @FUNCTION: perl-module_src_compile
# @USAGE: perl-module_src_compile
# @DESCRIPTION:
# Compile the ebuild sources.
# This function is to be called during the ebuild src_compile() phase.
perl-module_src_compile() {
	debug-print-function $FUNCNAME "$@"
	perl_set_version

	if [[ $(declare -p mymake 2>&-) != "declare -a mymake="* ]]; then
		local mymake_local=(${mymake})
	else
		local mymake_local=("${mymake[@]}")
	fi

	if [[ -f Build ]] ; then
		./Build build \
			|| die "Compilation failed"
	elif [[ -f Makefile ]] ; then
		set -- \
			OTHERLDFLAGS="${LDFLAGS}" \
			"${mymake_local[@]}"
		einfo "emake" "$@"
		emake "$@" \
			|| die "Compilation failed"
#			OPTIMIZE="${CFLAGS}" \
	fi
}

# @FUNCTION: perl-module_src-test
# @USAGE: perl-module_src_test()
# @DESCRIPTION:
# This code attempts to work out your threadingness from MAKEOPTS
# and apply them to Test::Harness.
#
# If you want more verbose testing, set TEST_VERBOSE=1
# in your bashrc | /etc/portage/make.conf | ENV
#
# or ebuild writers:
# If you wish to enable default tests w/ 'make test' ,
#
#  SRC_TEST="do"
#
# If you wish to have threads run in parallel ( using the users makeopts )
# all of the following have been tested to work.
#
#  SRC_TEST="do parallel"
#  SRC_TEST="parallel"
#  SRC_TEST="parallel do"
#  SRC_TEST=parallel
#
perl-module_src_test() {
	debug-print-function $FUNCNAME "$@"
	if has 'do' ${SRC_TEST} || has 'parallel' ${SRC_TEST} ; then
		if has "${TEST_VERBOSE:-0}" 0 && has 'parallel' ${SRC_TEST} ; then
			export HARNESS_OPTIONS=j$(makeopts_jobs)
			einfo "Test::Harness Jobs=$(makeopts_jobs)"
		fi
		perl_set_version
		if [[ -f Build ]] ; then
			./Build test verbose=${TEST_VERBOSE:-0} || die "test failed"
		elif [[ -f Makefile ]] ; then
			emake test TEST_VERBOSE=${TEST_VERBOSE:-0} || die "test failed"
		fi
	fi
}

# @FUNCTION: perl-module_src_install
# @USAGE: perl-module_src_install
# @DESCRIPTION:
# Install a Perl ebuild.
# This function is to be called during the ebuild src_install() phase.
perl-module_src_install() {
	debug-print-function $FUNCNAME "$@"

	perl_set_version

	local f

	if [[ -f Build ]]; then
		mytargets="${mytargets:-install}"
		mbparams="${mbparams:---pure}"
		einfo "./Build ${mytargets} ${mbparams}"
		./Build ${mytargets} ${mbparams} \
			|| die "./Build ${mytargets} ${mbparams} failed"
	elif [[ -f Makefile ]]; then
		case "${CATEGORY}" in
			dev-perl|perl-core) mytargets="pure_install" ;;
			*)                  mytargets="install" ;;
		esac
		if [[ $(declare -p myinst 2>&-) != "declare -a myinst="* ]]; then
			local myinst_local=(${myinst})
		else
			local myinst_local=("${myinst[@]}")
		fi
		emake "${myinst_local[@]}" ${mytargets} \
			|| die "emake ${myinst_local[@]} ${mytargets} failed"
	fi

	perl_delete_module_manpages
	perl_delete_localpod
	perl_delete_packlist
	perl_remove_temppath

	for f in Change* CHANGES README* TODO FAQ ${mydoc}; do
		[[ -s ${f} ]] && dodoc ${f}
	done

	perl_link_duallife_scripts
}

# @FUNCTION: perl-module_pkg_postinst
# @USAGE: perl-module_pkg_postinst
# @DESCRIPTION:
# This function is to be called during the pkg_postinst() phase. It only does 
# useful things for the perl-core category, where it handles the file renaming and symbolic
# links that prevent file collisions for dual-life packages installing scripts. 
# In any other category it immediately exits.
perl-module_pkg_postinst() {
	debug-print-function $FUNCNAME "$@"
	if [[ ${CATEGORY} != perl-core ]] ; then
		eqawarn "perl-module.eclass: You are calling perl-module_pkg_postinst outside the perl-core category."
		eqawarn "   This does not do anything; the call can be safely removed."
		return 0
	fi
	perl_link_duallife_scripts
}

# @FUNCTION: perl-module_pkg_postrm
# @USAGE: perl-module_pkg_postrm
# @DESCRIPTION:
# This function is to be called during the pkg_postrm() phase. It only does 
# useful things for the perl-core category, where it handles the file renaming and symbolic
# links that prevent file collisions for dual-life packages installing scripts. 
# In any other category it immediately exits.
perl-module_pkg_postrm() {
	debug-print-function $FUNCNAME "$@"
	if [[ ${CATEGORY} != perl-core ]] ; then
		eqawarn "perl-module.eclass: You are calling perl-module_pkg_postrm outside the perl-core category."
		eqawarn "   This does not do anything; the call can be safely removed."
		return 0
	fi
	perl_link_duallife_scripts
}