[gentoo-dev] perl eclass review - EAPI=3 + new helper eclass

[Torsten Veller <ml-en@veller.net>]

The perl-module.eclass must be updated to support EAPI=3 [1] and
a new eclass will be added which does contain some (more or less) useful
stand-alone functions split from the old perl-module.eclass without
exporting phase functions.
Functions used in ebuilds that don't need the exported default phases
are perlinfo() and fixlocalpod().


Below is the new eclass, working title is perl-helper.eclass.
A diff between the the current and the new perl-module.eclass can be
found at [2]. Both are in use in the perl-experimental overlay [3].


Please review! If someone can come up with better names, either the
perl-helper.eclass or the functions named perl_*, please tell me.
I tried to make the perl-helper functions more unique but the
meaningfulness is open to question.


Thanks


[1] https://bugs.gentoo.org/310453
[2] http://dev.gentoo.org/~tove/files/perl-module.diff
[3] http://git.overlays.gentoo.org/gitweb/?p=proj/perl-overlay.git;a=tree;f=eclass;hb=HEAD



# Copyright 1999-2010 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

[[ ${CATEGORY} == "perl-core" ]] && inherit alternatives

perlinfo() {
	debug-print-function $FUNCNAME "$@"
	perl_set_version
}

perl_set_version() {
	debug-print-function $FUNCNAME "$@"
	debug-print "$FUNCNAME: perlinfo_done=${perlinfo_done}"
	${perlinfo_done} && return 0
	perlinfo_done=true

	local f version install{{site,vendor}{arch,lib},archlib}
	eval "$(perl -V:{version,install{{site,vendor}{arch,lib},archlib}} )"
	PERL_VERSION=${version}
	SITE_ARCH=${installsitearch}
	SITE_LIB=${installsitelib}
	ARCH_LIB=${installarchlib}
	VENDOR_LIB=${installvendorlib}
	VENDOR_ARCH=${installvendorarch}
}

fixlocalpod() {
	debug-print-function $FUNCNAME "$@"
	perl_delete_localpod
}

perl_delete_localpod() {
	debug-print-function $FUNCNAME "$@"

	find "${D}" -type f -name perllocal.pod -delete
	find "${D}" -depth -mindepth 1 -type d -empty -delete
}

perl_fix_osx_extra() {
	debug-print-function $FUNCNAME "$@"

	# Remove "AppleDouble encoded Macintosh file"
	local f
	find "${S}" -type f -name "._*" -print0 | while read -rd '' f ; do
		einfo "Removing AppleDouble encoded Macintosh file: ${f#${S}/}"
		rm -f "${f}"
		f=${f#${S}/}
	#	f=${f//\//\/}
	#	f=${f//\./\.}
	#	sed -i "/${f}/d" "${S}"/MANIFEST || die
		grep -q "${f}" "${S}"/MANIFEST && \
			elog "AppleDouble encoded Macintosh file in MANIFEST: ${f#${S}/}"
	done
}

perl_delete_module_manpages() {
	debug-print-function $FUNCNAME "$@"

	perl_set_eprefix

	if [[ -d "${ED}"/usr/share/man ]] ; then
#		einfo "Cleaning out stray man files"
		find "${ED}"/usr/share/man -type f -name "*.3pm" -delete
		find "${ED}"/usr/share/man -depth -type d -empty -delete
	fi
}

perl_delete_packlist() {
	debug-print-function $FUNCNAME "$@"
	perl_set_version
	if [[ -d ${D}/${VENDOR_LIB} ]] ; then
		find "${D}/${VENDOR_LIB}" -type f -a \( -name .packlist \
			-o \( -name '*.bs' -a -empty \) \) -delete
		find "${D}/${VENDOR_LIB}" -depth -mindepth 1 -type d -empty -delete
	fi
}

perl_remove_temppath() {
	debug-print-function $FUNCNAME "$@"

	find "${D}" -type f -not -name '*.so' -print0 | while read -rd '' f ; do
		if file "${f}" | grep -q -i " text" ; then
			grep -q "${D}" "${f}" && ewarn "QA: File contains a temporary path ${f}"
			sed -i -e "s:${D}:/:g" "${f}"
		fi
	done
}

perl_link_duallife_scripts() {
	debug-print-function $FUNCNAME "$@"
	if [[ ${CATEGORY} != perl-core ]] || ! has_version ">=dev-lang/perl-5.8.8-r8" ; then
		return 0
	fi

	perl_set_eprefix

	local i ff
	if has "${EBUILD_PHASE:-none}" "postinst" "postrm" ; then
		for i in "${DUALLIFESCRIPTS[@]}" ; do
			alternatives_auto_makesym "/usr/bin/${i}" "/usr/bin/${i}-[0-9]*"
			ff=`echo "${EROOT}"/usr/share/man/man1/${i}-${PV}-${P}.1*`
			ff=${ff##*.1}
			alternatives_auto_makesym "/usr/share/man/man1/${i}.1${ff}" "/usr/share/man/man1/${i}-[0-9]*"
		done
	else
		pushd "${ED}" > /dev/null
		for i in $(find usr/bin -maxdepth 1 -type f 2>/dev/null) ; do
			mv ${i}{,-${PV}-${P}} || die
			DUALLIFESCRIPTS[${#DUALLIFESCRIPTS[*]}]=${i##*/}
			if [[ -f usr/share/man/man1/${i##*/}.1 ]] ; then
				mv usr/share/man/man1/${i##*/}{.1,-${PV}-${P}.1} || die
			fi
		done
		popd > /dev/null
	fi
}

perl_set_eprefix() {
	debug-print-function $FUNCNAME "$@"
	case ${EAPI:-0} in
		0|1|2)
			if ! use prefix; then
				EPREFIX=
				ED=${D}
				EROOT=${ROOT}
			fi
			;;
	esac
}