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# Copyright 1999-2008 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/eclass/kde4-functions.eclass,v 1.23 2009/08/20 09:18:01 scarabeus Exp $

# Prefix compat:
: ${EROOT:=${ROOT}}
# Append missing trailing slash character
[[ ${EROOT} = */ ]] || EROOT+="/"

# @ECLASS: kde4-functions.eclass
# @MAINTAINER:
# kde@gentoo.org
# @BLURB: Common ebuild functions for KDE 4 packages
# @DESCRIPTION:
# This eclass contains all functions shared by the different eclasses,
# for KDE 4 ebuilds.

# @ECLASS-VARIABLE: EAPI
# @DESCRIPTION:
# By default kde4 eclasses want EAPI 2 which might be redefinable to newer
# versions.
case ${EAPI:-0} in
	2) : ;;
	*) DEPEND="EAPI-TOO-OLD" ;;
esac

# @ECLASS-VARIABLE: KDEBASE
# @DESCRIPTION:
# This gets set to a non-zero value when a package is considered a kde or
# koffice ebuild.

if [[ ${CATEGORY} = kde-base ]]; then
	debug-print "${ECLASS}: KDEBASE ebuild recognized"
	KDEBASE=kde-base
fi

# is this a koffice ebuild?
if [[ ${KMNAME} = koffice || ${PN} = koffice ]]; then
	debug-print "${ECLASS}: KOFFICE ebuild recognized"
	KDEBASE=koffice
fi

# @ECLASS-VARIABLE: KDE_SLOTS
# @DESCRIPTION:
# The slots used by all KDE versions later than 4.0. The live KDE releases use
# KDE_LIVE_SLOTS instead. Values should be ordered.
KDE_SLOTS=( "kde-4" "4.1" "4.2" "4.3" "4.4" )

# @ECLASS-VARIABLE: KDE_LIVE_SLOTS
# @DESCRIPTION:
# The slots used by KDE live versions. Values should be ordered.
KDE_LIVE_SLOTS=( "live" )

# @FUNCTION: buildsycoca
# @DESCRIPTION:
# Function to rebuild the KDE System Configuration Cache.
# All KDE ebuilds should run this in pkg_postinst and pkg_postrm.
buildsycoca() {
	debug-print-function ${FUNCNAME} "$@"

	local KDE3DIR="${EROOT}usr/kde/3.5"
	if [[ -z ${EROOT%%/} && -x "${KDE3DIR}"/bin/kbuildsycoca ]]; then
		# Since KDE3 is aware of shortcuts in /usr, rebuild database
		# for KDE3 as well.
		touch "${KDE3DIR}"/share/services/ksycoca
		chmod 644 "${KDE3DIR}"/share/services/ksycoca

		ebegin "Running kbuildsycoca to build global database"
		XDG_DATA_DIRS="${EROOT}usr/local/share:${KDE3DIR}/share:${EROOT}usr/share" \
			DISPLAY="" \
			"${KDE3DIR}"/bin/kbuildsycoca --global --noincremental &> /dev/null
		eend $?
	fi

	if [[ -z ${EROOT%%/} && -x "${KDEDIR}"/bin/kbuildsycoca4 ]]; then
		# Make sure tha cache file exists, writable by root and readable by
		# others. Otherwise kbuildsycoca4 will fail.
		touch "${KDEDIR}/share/kde4/services/ksycoca4"
		chmod 644 "${KDEDIR}/share/kde4/services/ksycoca4"

		# We have to unset DISPLAY and DBUS_SESSION_BUS_ADDRESS, the ones
		# in the user's environment (through su [without '-']) may cause
		# kbuildsycoca4 to hang.

		ebegin "Running kbuildsycoca4 to build global database"
		# This is needed because we support multiple kde versions installed together.
		# Lookup in order - local, KDEDIR, /usr, do not duplicate entries btw.
		local KDEDIRS="${EROOT}usr/share"
		[[ ${KDEDIR} != "${EROOT}usr" ]] && KDEDIRS="${KDEDIR}/share:${KDEDIRS}"
		XDG_DATA_DIRS="${EROOT}usr/local/share:${KDEDIRS}" \
			DISPLAY="" DBUS_SESSION_BUS_ADDRESS="" \
			"${KDEDIR}"/bin/kbuildsycoca4 --global --noincremental &> /dev/null
		eend $?
	fi

	# fix permission for some directories
	for x in share/{config,kde4}; do
		[[ ${KDEDIR} = ${EROOT}usr ]] && DIRS=${EROOT}usr || DIRS="${EROOT}usr ${KDEDIR}"
		for y in ${DIRS}; do
			[[ -d "${y}/${x}" ]] || break # nothing to do if directory does not exist
			if [[ $(stat --format=%a "${y}/${x}") != 755 ]]; then
				ewarn "QA Notice:"
				ewarn "Package ${PN} is breaking ${y}/${x} permissions."
				ewarn "Please report this issue to gentoo bugzilla."
				einfo "Permissions will get adjusted automatically now."
				find "${y}/${x}" -type d -print0 | xargs -0 chmod 755
			fi
		done
	done
}

# @FUNCTION: comment_all_add_subdirectory
# @USAGE: [list of directory names]
# @DESCRIPTION:
# Recursively comment all add_subdirectory instructions in listed directories,
# except those in cmake/.
comment_all_add_subdirectory() {
	find "$@" -name CMakeLists.txt -print0 | grep -vFzZ "./cmake" | \
		xargs -0 sed -i \
			-e '/^[[:space:]]*add_subdirectory/s/^/#DONOTCOMPILE /' \
			-e '/^[[:space:]]*ADD_SUBDIRECTORY/s/^/#DONOTCOMPILE /' \
			-e '/^[[:space:]]*macro_optional_add_subdirectory/s/^/#DONOTCOMPILE /' \
			-e '/^[[:space:]]*MACRO_OPTIONAL_ADD_SUBDIRECTORY/s/^/#DONOTCOMPILE /' \
			|| die "${LINENO}: Initial sed died"
}

# @ECLASS-VARIABLE: KDE_LINGUAS
# @DESCRIPTION:
# This is a whitespace-separated list of translations this ebuild supports.
# These translations are automatically added to IUSE. Therefore ebuilds must set
# this variable before inheriting any eclasses. To enable only selected
# translations, ebuilds must call enable_selected_linguas(). kde4-{base,meta}.eclass does
# this for you.
#
# Example: KDE_LINGUAS="en_GB de nl"
for _lingua in ${KDE_LINGUAS}; do
	IUSE="${IUSE} linguas_${_lingua}"
done

# @FUNCTION: enable_selected_linguas
# @DESCRIPTION:
# Enable translations based on LINGUAS settings and translations supported by
# the package (see KDE_LINGUAS). By default, translations are found in "${S}"/po
# but this default can be overridden by defining KDE_LINGUAS_DIR.
enable_selected_linguas() {
	debug-print-function ${FUNCNAME} "$@"

	local lingua linguas sr_mess wp

	# if there is no linguas defined we enable everything
	if ! $(env | grep -q "^LINGUAS="); then
		return 0
	fi

	# @ECLASS-VARIABLE: KDE_LINGUAS_DIR
	# @DESCRIPTION:
	# Specified folder where application translations are located.
	KDE_LINGUAS_DIR=${KDE_LINGUAS_DIR:="po"}
	[[ -d  "${KDE_LINGUAS_DIR}" ]] || die "wrong linguas dir specified"
	comment_all_add_subdirectory "${KDE_LINGUAS_DIR}"
	pushd "${KDE_LINGUAS_DIR}" > /dev/null

	# fix all various crazy sr@Latn variations
	# this part is only ease for ebuilds, so there wont be any die when this
	# fail at any point
	sr_mess="sr@latn sr@latin sr@Latin"
	for wp in ${sr_mess}; do
		[[ -e "${wp}.po" ]] && mv "${wp}.po" "sr@Latn.po"
		if [[ -d "${wp}" ]]; then
			# move dir and fix cmakelists
			mv "${wp}" "sr@Latn"
			sed -i \
				-e "s:${wp}:sr@Latin:g" \
				CMakeLists.txt
		fi
	done

	for lingua in ${KDE_LINGUAS}; do
		if [[ -e "${lingua}.po" ]]; then
			mv "${lingua}.po" "${lingua}.po.old"
		fi
	done

	for lingua in ${KDE_LINGUAS}; do
		if use linguas_${lingua} ; then
			if [[ -d "${lingua}" ]]; then
				linguas="${linguas} ${lingua}"
				sed -e "/add_subdirectory([[:space:]]*${lingua}[[:space:]]*)[[:space:]]*$/ s/^#DONOTCOMPILE //" \
					-e "/ADD_SUBDIRECTORY([[:space:]]*${lingua}[[:space:]]*)[[:space:]]*$/ s/^#DONOTCOMPILE //" \
					-i CMakeLists.txt || die "Sed to uncomment linguas_${lingua} failed."
			fi
			if [[ -e "${lingua}.po.old" ]]; then
				linguas="${linguas} ${lingua}"
				mv "${lingua}.po.old" "${lingua}.po"
			fi
		fi
	done
	[[ -n "${linguas}" ]] && einfo "Enabling languages: ${linguas}"

	popd > /dev/null
}

# @FUNCTION: enable_selected_doc_linguas
# @DESCRIPTION:
# Enable only selected linguas enabled doc folders.
enable_selected_doc_linguas() {
	debug-print-function ${FUNCNAME} "$@"

	# if there is no linguas defined we enable everything
	if ! $(env | grep -q "^LINGUAS="); then
		return 0
	fi

	# @ECLASS-VARIABLE: KDE_DOC_DIRS
	# @DESCRIPTION:
	# Variable specifying whitespace separated patterns for documentation locations.
	# Default is "doc/%lingua"
	KDE_DOC_DIRS=${KDE_DOC_DIRS:='doc/%lingua'}
	local linguas
	for pattern in ${KDE_DOC_DIRS}; do

		local handbookdir=`dirname ${pattern}`
		local translationdir=`basename ${pattern}`
		# Do filename pattern supplied, treat as directory
		[[ "${handbookdir}" = '.' ]] && handbookdir=${translationdir} && translationdir=
		[[ -d "${handbookdir}" ]] || die 'wrong doc dir specified'

		if ! use handbook; then
			# Disable whole directory
			sed -e "/add_subdirectory[[:space:]]*([[:space:]]*${handbookdir}[[:space:]]*)/s/^/#DONOTCOMPILE /" \
				-e "/ADD_SUBDIRECTORY[[:space:]]*([[:space:]]*${handbookdir}[[:space:]]*)/s/^/#DONOTCOMPILE /" \
				-i CMakeLists.txt || die 'failed to comment out all handbooks'
		else
			# Disable subdirectories recursively
			comment_all_add_subdirectory "${handbookdir}"
			# Add requested translations
			local lingua
			for lingua in en ${KDE_LINGUAS}; do
				if [[ ${lingua} = 'en' ]] || use linguas_${lingua}; then
					if [[ -d "${handbookdir}/${translationdir//%lingua/${lingua}}" ]]; then
						sed -e "/add_subdirectory[[:space:]]*([[:space:]]*${translationdir//%lingua/${lingua}}/s/^#DONOTCOMPILE //" \
							-e "/ADD_SUBDIRECTORY[[:space:]]*([[:space:]]*${translationdir//%lingua/${lingua}}/s/^#DONOTCOMPILE //" \
							-i "${handbookdir}"/CMakeLists.txt && ! has ${lingua} ${linguas} && linguas="${linguas} ${lingua}"
					fi
				fi
			done
		fi

	done
	[[ -n "${linguas}" ]] && einfo "Enabling handbook translations:${linguas}"
}

# @FUNCTION: get_build_type
# @DESCRIPTION:
# Determine whether we are using live ebuild or tbzs.
get_build_type() {
	if [[ ${SLOT} = live || ${PV} = *9999* ]]; then
		BUILD_TYPE="live"
	else
		BUILD_TYPE="release"
	fi
	export BUILD_TYPE
}

# @FUNCTION: migrate_store_dir
# @DESCRIPTION:
# Universal store dir migration
# * performs split of kdebase to kdebase-apps when needed
# * moves playground/extragear kde4-base-style to toplevel dir
migrate_store_dir() {
	local cleandir="${ESVN_STORE_DIR}/KDE"
	if [[ -d "${cleandir}" ]]; then
		ewarn "'${cleandir}' has been found. Moving contents to new location."
		addwrite "${ESVN_STORE_DIR}"
		# Split kdebase
		local module
		if pushd "${cleandir}"/kdebase/kdebase > /dev/null; then
			for module in `find . -maxdepth 1 -type d -name [a-z0-9]\*`; do
				module="${module#./}"
				mkdir -p "${ESVN_STORE_DIR}/kdebase-${module}" && mv -f "${module}" "${ESVN_STORE_DIR}/kdebase-${module}" || \
					die "Failed to move to '${ESVN_STORE_DIR}/kdebase-${module}'."
			done
			popd > /dev/null
			rm -fr "${cleandir}/kdebase" || \
				die "Failed to remove ${cleandir}/kdebase. You need to remove it manually."
		fi
		# Move the rest
		local pkg
		for pkg in "${cleandir}"/*; do
			mv -f "${pkg}" "${ESVN_STORE_DIR}"/ || eerror "Failed to move '${pkg}'"
		done
		rmdir "${cleandir}" || die "Could not move obsolete KDE store dir. Please move '${cleandir}' contents to appropriate location (possibly ${ESVN_STORE_DIR}) and manually remove '${cleandir}' in order to continue."
	fi

	if ! hasq kde4-meta ${INHERITED}; then
		case ${KMNAME} in
			extragear*|playground*)
				local svnlocalpath="${ESVN_STORE_DIR}"/"${KMNAME}"/"${PN}"
				if [[ -d "${svnlocalpath}" ]]; then
					local destdir="${ESVN_STORE_DIR}"/"${ESVN_PROJECT}"/"`basename "${ESVN_REPO_URI}"`"
					ewarn "'${svnlocalpath}' has been found."
					ewarn "Moving contents to new location: ${destdir}"
					addwrite "${ESVN_STORE_DIR}"
					mkdir -p "${ESVN_STORE_DIR}"/"${ESVN_PROJECT}" && mv -f "${svnlocalpath}" "${destdir}" \
						|| die "Failed to move to '${svnlocalpath}'"
					# Try cleaning empty directories
					rmdir "`dirname "${svnlocalpath}"`" 2> /dev/null
				fi
				;;
		esac
	fi
}

# Functions handling KMLOADLIBS and KMSAVELIBS

# @FUNCTION: save_library_dependencies
# @DESCRIPTION:
# Add exporting CMake dependencies for current package
save_library_dependencies() {
	local depsfile="${T}/${PN}:${SLOT}"

	ebegin "Saving library dependencies in ${depsfile##*/}"
	echo "EXPORT_LIBRARY_DEPENDENCIES(\"${depsfile}\")" >> "${S}/CMakeLists.txt" || \
		die "Failed to save the library dependencies."
	eend $?
}

# @FUNCTION: install_library_dependencies
# @DESCRIPTION:
# Install generated CMake library dependencies to /var/lib/kde
install_library_dependencies() {
	local depsfile="${T}/${PN}:${SLOT}"

	ebegin "Installing library dependencies as ${depsfile##*/}"
	insinto ${EROOT}var/lib/kde
	doins "${depsfile}" || die "Failed to install library dependencies."
	eend $?
}

# @FUNCTION: load_library_dependencies
# @DESCRIPTION:
# Inject specified library dependencies in current package
load_library_dependencies() {
	local pn i depsfile
	ebegin "Injecting library dependencies from '${KMLOADLIBS}'"

	i=0
	for pn in ${KMLOADLIBS} ; do
		((i++))
		depsfile="${EROOT}var/lib/kde/${pn}:${SLOT}"
		[[ -r "${depsfile}" ]] || die "Depsfile '${depsfile}' not accessible. You probably need to reinstall ${pn}."
		sed -i -e "${i}iINCLUDE(\"${depsfile}\")" "${S}/CMakeLists.txt" || \
			die "Failed to include library dependencies for ${pn}"
	done
	eend $?
}

# @FUNCTION: block_other_slots
# @DESCRIPTION:
# Create blocks for the current package in other slots when
# installed with USE=-kdeprefix
block_other_slots() {
	local slot

	debug-print-function ${FUNCNAME} "$@"

	for slot in ${KDE_SLOTS[@]} ${KDE_LIVE_SLOTS[@]}; do
		# Block non kdeprefix ${PN} on other slots
		if [[ ${SLOT} != ${slot} ]]; then
			echo "!kdeprefix? ( !kde-base/${PN}:${slot}[-kdeprefix] )"
		fi
	done
}

# @FUNCTION: add_blocker
# @DESCRIPTION:
# Create correct RDEPEND value for blocking correct package.
# Usefull for file-collision blocks.
# Parameters are package and version to block.
# add_blocker kde-base/kdelibs 4.2.4
add_blocker() {
	local slot

	debug-print-function ${FUNCNAME} "$@"

	[[ ${1} = "" || ${2} = "" ]] && die "Missing parameter"
	for slot in ${KDE_SLOTS[@]} ${KDE_LIVE_SLOTS[@]}; do
		# on -kdeprefix we block every slot
		RDEPEND+=" !kdeprefix? ( !<=${1}-${2}:${slot}[-kdeprefix] )"
	done
	# on kdeprefix we block only our slot
	RDEPEND+=" kdeprefix? ( !<=${1}-${2}:${SLOT}[kdeprefix] )"
}