php.eselect

# -*-eselect-*-  vim: ft=eselect
# Copyright 2010-2011 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2


inherit config multilib

DESCRIPTION="Manage php installations"
MAINTAINER="php-bugs@gentoo.org"

MODULES="cli apache2 fpm cgi"

cli_link="${EROOT}"/usr/bin/php
fpm_link="${EROOT}"/usr/bin/php-fpm
cgi_link="${EROOT}"/usr/bin/php-cgi

cleanup_sapis() {
	local m
	local link
	for m in $MODULES ; do
		cleanup_sapi $m
	done
}

cleanup_sapi() {
	local l=${1}_link
	local link=${!l}
	if [[ -L $link && ! -e $link ]] ; then
		echo -n "Broken link for $1"
		if update_sapi $1 ; then
			echo ". Updated version to $(get_active_$1)"
			return
		else 
			rm $link
			echo ". No suitable targets left. Removing"
			return
		fi
	fi
	return 1
}

update_sapi() {
	local target=$(find_targets_$1 | tail -n 1)
	local current=$(get_active_$1)
	[[ -z $target ]] && return 1
	[[ $current = $target ]] && return 1
	set_$1 $target
}

get_libdirs() {
	local dir libdirs
	for dir in $(list_libdirs); do
		[[ -L ${EROOT}/usr/${dir} ]] && continue
		ls "${EROOT}"/usr/${dir}/php*.* > /dev/null 2>&1 || continue

		libdirs+=' '/usr/${dir}
	done
	echo ${libdirs:-/usr/lib}
}

get_active_libdir() {
	local dir
	for dir in $(get_libdirs); do
		echo ${dir}
		return
	done
	echo /usr/lib
}

get_libname() {
	# probe on a well-known library
	local lib ret=.so
	for lib in "${EROOT}"$(get_active_libdir)/libz.* ; do
		case "${lib##*/}" in
			libz.a)    ret=.a   ;; # some platforms use .a as ext
			libz.*.*)  continue ;;
			libz.*)
				ret=${lib##*libz}
				break
				;;
		esac
	done
	echo ${ret}
}

apache2_link="${EROOT}"$(get_active_libdir)/apache2/modules/libphp5$(get_libname)

cleanup() {
	local target=$(find_targets_$1 | tail -n 1)
	[[ -z $target ]] && 
	set_$1 $target
}

find_targets() {
	local dir dirs libdir
	for libdir in $(get_libdirs); do
		for dir in "${EROOT}"${libdir}/php*.*; do
			t=$(basename $dir)
			has $t $dirs || dirs="${dirs} $t"
		done
	done
  echo $dirs
}

find_targets_apache2() {
	local target libdir
	for target in $(find_targets); do
		for libdir in $(get_libdirs); do
			[[ -f ${EROOT}${libdir}/$target/apache2/libphp5$(get_libname) ]] && echo $target
		done
	done | sort -u
}

find_targets_cli() {
	local target libdir
	for target in $(find_targets); do
		for libdir in $(get_libdirs); do
			[[ -f ${EROOT}${libdir}/$target/bin/php ]] && echo $target
		done
	done | sort -u
}

find_targets_fpm() {
	local target libdir
	for target in $(find_targets); do
		for libdir in $(get_libdirs); do
			[[ -f ${EROOT}${libdir}/$target/bin/php-fpm ]] && echo $target
		done
	done | sort -u
}

find_targets_cgi() {
	local target libdir
	for target in $(find_targets); do
		for libdir in $(get_libdirs); do
			[[ -f ${EROOT}${libdir}/$target/bin/php-cgi ]] && echo $target
		done
	done | sort -u
}

get_active_cli() {
	readlink -e "${EROOT}"/usr/bin/php | sed -ne "s:.*/usr/.*/\(php[0-9]\.[0-9][0-9]*\)/bin/php:\1:p"
}

get_active_cgi() {
	readlink -e "${EROOT}"/usr/bin/php-cgi | sed -ne "s:.*/usr/.*/\(php[0-9]\.[0-9]\)/bin/php-cgi:\1:p"
}

get_active_fpm() {
	readlink -e "${EROOT}"/usr/bin/php-fpm | sed -ne "s:.*/usr/.*/\(php[0-9]\.[0-9]\)/bin/php-fpm:\1:p"
}

get_active_apache2() {
	readlink -e "${EROOT}"$(get_active_libdir)/apache2/modules/libphp5$(get_libname) | sed -ne "s:.*/usr/.*/\(php[0-9]\.[0-9]\)/apache2/libphp5$(get_libname):\1:p"
}

resolv_target() {
	local targets=( $(find_targets_$1) )
	if is_number $2; then
		[[ $2 -le ${#targets[@]} && $2 -gt 0 ]] && echo "${targets[ $(( $2 - 1 )) ]}"
	elif has $2 ${targets[@]}; then
	  echo $2
	fi
}

check_module() {
	has $1 $(echo $MODULES) || die -q "Please chose one of the following modules: ${MODULES}"
}

## Actual actions

list_apache2() {
	local targets
	local a
	targets=( $(find_targets_apache2) )
	a=$(get_active_apache2)
	for (( i = 0; i < ${#targets[@]}; i++ )) ; do
		[[ $a == ${targets[i]} ]] && targets[i]=$(highlight_marker "${targets[i]}")
	done
	write_numbered_list -m "(none found)" "${targets[@]}"
}

list_cli() {
	local targets
	local a
	targets=( $(find_targets_cli) )
	a=$(get_active_cli)
	for (( i = 0; i < ${#targets[@]}; i++ )) ; do
		[[ $a == ${targets[i]} ]] && targets[i]=$(highlight_marker "${targets[i]}")
	done
	write_numbered_list -m "(none found)" "${targets[@]}"
}

list_cgi() {
	local targets
	local a
	targets=( $(find_targets_cgi) )
	a=$(get_active_cgi)
	for (( i = 0; i < ${#targets[@]}; i++ )) ; do
		[[ $a == ${targets[i]} ]] && targets[i]=$(highlight_marker "${targets[i]}")
	done
	write_numbered_list -m "(none found)" "${targets[@]}"
}

list_fpm() {
	local targets
	local a
	targets=( $(find_targets_fpm) )
	a=$(get_active_fpm)
	for (( i = 0; i < ${#targets[@]}; i++ )) ; do
		[[ $a == ${targets[i]} ]] && targets[i]=$(highlight_marker "${targets[i]}")
	done
	write_numbered_list -m "(none found)" "${targets[@]}"
}

set_apache2() {
	local libdir t=$(resolv_target apache2 $1)
	[[ -z $t ]] && die -q "Bad target"
	for libdir in $(get_libdirs); do
		ln -sf ../../$t/apache2/libphp5$(get_libname) "${EROOT}"${libdir}/apache2/modules/ || \
			die -q "Failed to set symlink for ${EPREFIX}${libdir}/apache2/modules/libphp5$(get_libname)"
	done
	echo "You have to run \`${EPREFIX}/etc/init.d/apache2 restart' for the changes to take effect"
}

set_cli() {
	local file libdir t=$(resolv_target cli $1)
	[[ -z $t ]] && die -q "Bad target"
	for file in php phpize php-config; do
		ln -sf ../..$(get_active_libdir)/$t/bin/$file "${EROOT}"/usr/bin/$file || \
			die -q "Failed to create symlink for ${file}"
	done
}

set_cgi() {
	t=$(resolv_target cgi $1)
	[[ -z $t ]] && die -q "Bad target"
	ln -sf ../..$(get_active_libdir)/$t/bin/php-cgi "${EROOT}"/usr/bin/php-cgi || \
	  die -q "Failed to create symlink for php-cgi"
}

set_fpm() {
	local t=$(resolv_target fpm $1)
	[[ -z $t ]] && die -q "Bad target"
	ln -sf ../..$(get_active_libdir)/$t/bin/php-fpm "${EROOT}"/usr/bin/php-fpm || \
		die -q "Failed to create symlink for the php-fpm binary"
	echo "You have to run \`${EPREFIX}/etc/init.d/php-fpm restart' for the changes to take effect"
}
## set action

describe_set() {
	echo "Sets the current configuration for a module"
}

describe_set_parameters() {
	echo "<module> <target>"
}

describe_set_options() {
	echo "module:	one of ${MODULES}"
	echo "target:	Target name or number (from the 'list' action)"
}


do_set() {
	check_module $1
	set_$1 $2
}



## List action

describe_list() {
	echo "Lists available php installs for a module"
}

describe_list_parameters() {
	echo "<module>"
}

describe_list_options() {
	echo "module: one of ${MODULES}"
}

do_list() {
	check_module $1
	list_$1
}

## Show action

describe_show() {
	echo "Lists available php installs for a module"
}

describe_show_parameters() {
	echo "<module>"
}

describe_show_options() {
	echo "module: one of ${MODULES}"
}

do_show() {
	check_module $1
	get_active_$1
}

## update action

describe_update() {
	echo "Automatically update the php versions"
}

describe_update_parameters() {
	echo "<module> [ifunset]"
}

describe_update_options() {
	echo "module: one of ${MODULES}"
	echo "ifunset : Do not override existing implementation"
}

do_update() {
    check_module $1
	[[ -z ${2} || ( -z ${3} && ( ${2} == ifunset || ${2} == '--if-unset' ) ) ]] || \
		die -q "Usage error"

	[[ ( ${2} == ifunset || ${2} == '--if-unset' ) && -n $(get_active_$1) ]] && \
		return

    update_sapi $1 || echo "Nothing to update"
}

## cleanup action

describe_cleanup() {
	echo "Automatically clean up stale links"
}

describe_cleanup_parameters() {
	echo
}

describe_cleanup_options() {
	echo
}

do_cleanup() {
    cleanup_sapis
}