#!/bin/sh

# This script wraps docker-php-ext-install, properly configuring the system.
#
# Copyright (c) Michele Locati, 2018
#
# Source: https://github.com/mlocati/docker-php-extension-installer
#
# License: MIT - see https://github.com/mlocati/docker-php-extension-installer/blob/master/LICENSE

# Let's set a sane environment
set -o errexit
set -o nounset

# Reset the Internal Field Separator
resetIFS () {
	IFS='	 
'
}

# Get the distribution name
#
# Output:
#   alpine|debian
getDistro () {
	getDistro_os_id=''
	if test -r /etc/os-release; then
		getDistro_os_id="$(cat /etc/os-release | grep -E ^ID= | cut -d = -f 2)"
		case "$getDistro_os_id" in
			alpine|debian)
				;;
			*)
				getDistro_os_id=''
				;;
		esac
	fi
	if test -n "$getDistro_os_id"; then
		printf '%s' "$getDistro_os_id"
	else
		printf '%s' 'debian'
	fi
}

# Get the PHP Major-Minor version as an integer value, in format MMmm (example: 506 for PHP 5.6.15)
#
# Output:
#   The PHP numeric Major-Minor version
getPHPMajorMinor () {
	php -r '$v = explode(".", PHP_VERSION); echo $v[0] * 100 + $v[1];'
}

# Get the normalized list of already installed PHP modules
#
# Output:
#   Space-separated list of module handles
getPHPInstalledModules () {
	getPHPInstalledModules_result=''
	IFS='
'
	for getPHPInstalledModules_module in $(php -m); do
		getPHPInstalledModules_moduleNormalized=''
		case "$getPHPInstalledModules_module" in
			\[PHP\ Modules\])
				;;
			\[Zend\ Modules\])
				break
				;;
			Core|PDO|PDO_*|Phar|Reflection|SimpleXML|SPL|SQLite|Xdebug)
				getPHPInstalledModules_moduleNormalized=$(LC_CTYPE=C printf '%s' "$getPHPInstalledModules_module" | tr '[:upper:]' '[:lower:]')
				;;
			Zend\ OPcache)
				getPHPInstalledModules_moduleNormalized='opcache'
				;;
			*\ *|*A*|*B*|*C*|*D*|*E*|*F*|*G*|*H*|*I*|*J*|*K*|*L*|*M*|*N*|*O*|*P*|*Q*|*R*|*S*|*T*|*U*|*V*|*W*|*X*|*Y*|*Z*)
				printf '### WARNING Unrecognized module name: %s ###\n' "$getPHPInstalledModules_module" >&2
				;;
			*)
				getPHPInstalledModules_moduleNormalized="$getPHPInstalledModules_module"
				;;
		esac
		if test -n "$getPHPInstalledModules_moduleNormalized"; then
			if ! stringInList "$getPHPInstalledModules_moduleNormalized" "$getPHPInstalledModules_result"; then
				getPHPInstalledModules_result="$getPHPInstalledModules_result $getPHPInstalledModules_moduleNormalized"
			fi
		fi
	done
	resetIFS
	printf '%s' "${getPHPInstalledModules_result# }"
}

# Get the handles of the modules to be installed
#
# Arguments:
#   $@: all module handles
#
# Set:
#   PHP_MODULES_TO_INSTALL
#
# Output:
#   Nothing
processCommandArguments () {
	processCommandArguments_alreadyInstalled="$(getPHPInstalledModules)"
	processCommandArguments_endArgs=0
	PHP_MODULES_TO_INSTALL=''
	while :; do
		if test $# -lt 1; then
			break
		fi
		processCommandArguments_skip=0
		if test $processCommandArguments_endArgs -eq 0; then
			case "$1" in
				--cleanup)
					printf '### WARNING the --cleanup option is deprecated (we always cleanup everything) ###\n' "$1" >&2
					processCommandArguments_skip=1
					;;
				--)
					processCommandArguments_skip=1
					processCommandArguments_endArgs=1
					;;
				-*)
					printf 'Unrecognized option: %s\n' "$1" >&2
					exit 1
					;;
			esac
		fi
		if test $processCommandArguments_skip -eq 0; then
			if stringInList "$1" "$PHP_MODULES_TO_INSTALL"; then
				printf '### WARNING Duplicated module name specified: %s ###\n' "$1" >&2
			elif stringInList "$1" "$processCommandArguments_alreadyInstalled"; then
				printf '### WARNING Module already installed: %s ###\n' "$1" >&2
			else
				PHP_MODULES_TO_INSTALL="$PHP_MODULES_TO_INSTALL $1"
			fi
		fi
		shift
	done
	PHP_MODULES_TO_INSTALL="${PHP_MODULES_TO_INSTALL# }"
}

# Sort the modules to be installed, in order to fix dependencies
#
# Update:
#   PHP_MODULES_TO_INSTALL
#
# Output:
#   Nothing
sortModulesToInstall () {
	if stringInList 'igbinary' "$PHP_MODULES_TO_INSTALL"; then
		PHP_MODULES_TO_INSTALL="$(removeStringFromList 'igbinary' "$PHP_MODULES_TO_INSTALL")"
		if test -z "$PHP_MODULES_TO_INSTALL"; then
			PHP_MODULES_TO_INSTALL='igbinary'
		else
			PHP_MODULES_TO_INSTALL="igbinary $PHP_MODULES_TO_INSTALL"
		fi
	fi
	if stringInList 'msgpack' "$PHP_MODULES_TO_INSTALL"; then
		PHP_MODULES_TO_INSTALL="$(removeStringFromList 'msgpack' "$PHP_MODULES_TO_INSTALL")"
		if test -z "$PHP_MODULES_TO_INSTALL"; then
			PHP_MODULES_TO_INSTALL='msgpack'
		else
			PHP_MODULES_TO_INSTALL="msgpack $PHP_MODULES_TO_INSTALL"
		fi
	fi
}

# Get the required APT/APK packages for a specific PHP version and for the list of module handles
#
# Arguments:
#   $1: the numeric PHP Major-Minor version
#   $@: the PHP module handles
#
# Set:
#   PACKAGES_PERSISTENT
#   PACKAGES_VOLATILE
#
# Return:
#   0 (true): if we to install some package
#   1 (false): if no package is required
buildRequiredPackageLists () {
	buildRequiredPackageLists_persistent=''
	buildRequiredPackageLists_volatile=''
	buildRequiredPackageLists_distro="$(getDistro)"
	buildRequiredPackageLists_phpv=$1
	while :; do
		if test $# -lt 2; then
			break
		fi
		shift
		case "$1@$buildRequiredPackageLists_distro" in
			amqp@alpine)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent rabbitmq-c"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile $PHPIZE_DEPS rabbitmq-c-dev"
				;;
			amqp@debian)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent librabbitmq4"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile librabbitmq-dev libssh-dev"
				;;
			apcu@alpine)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile $PHPIZE_DEPS"
				;;
			bz2@alpine)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libbz2"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile bzip2-dev"
				;;
			bz2@debian)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libbz2-dev"
				;;
			cmark@alpine)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile $PHPIZE_DEPS"
				;;
			cmark@debian)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile cmake"
				;;
			enchant@alpine)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent enchant"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile enchant-dev"
				;;
			enchant@debian)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libenchant1c2a"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libenchant-dev"
				;;
			gd@alpine)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent freetype libjpeg-turbo libpng libxpm"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile freetype-dev libjpeg-turbo-dev libpng-dev libxpm-dev"
				if test $buildRequiredPackageLists_phpv -le 506; then
					buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libvpx"
					buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libvpx-dev"
				else
					buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libwebp"
					buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libwebp-dev"
				fi
				;;
			gd@debian)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libfreetype6 libjpeg62-turbo libpng16-16 libxpm4"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libfreetype6-dev libjpeg62-turbo-dev libpng-dev libxpm-dev"
				if test $buildRequiredPackageLists_phpv -le 506; then
					buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libvpx?"
					buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libvpx-dev"
				else
					buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libwebp6"
					buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libwebp-dev"
				fi
				;;
			gettext@alpine)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libintl"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile gettext-dev"
				;;
			gmp@alpine)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent gmp"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile gmp-dev"
				;;
			gmp@debian)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libgmp-dev"
				;;
			igbinary@alpine)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile $PHPIZE_DEPS"
				;;
			imagick@alpine)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent imagemagick"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile $PHPIZE_DEPS imagemagick-dev"
				;;
			imagick@debian)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libmagickwand-6.q16-?"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libmagickwand-dev"
				;;
			imap@alpine)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent c-client"
				if test -z "$(apk info | grep -E ^libssl)"; then
					buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libssl1.0"
				fi
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile krb5-dev imap-dev openssl openssl-dev"
				;;
			imap@debian)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libc-client2007e"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libc-client-dev libkrb5-dev"
				;;
			interbase@alpine)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile $PHPIZE_DEPS icu-dev ncurses-dev"
				;;
			interbase@debian)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libfbclient2"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile firebird-dev libib-util"
				;;
			intl@alpine)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent icu-libs"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile icu-dev"
				;;
			intl@debian)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libicu-dev"
				;;
			ldap@alpine)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libldap"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile openldap-dev"
				;;
			ldap@debian)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libldap2-dev"
				;;
			mcrypt@alpine)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent $PHPIZE_DEPS libmcrypt"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libmcrypt-dev"
				;;
			mcrypt@debian)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libmcrypt4"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libmcrypt-dev"
				;;
			memcache@alpine)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile $PHPIZE_DEPS zlib-dev"
				;;
			memcache@debian)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile zlib1g-dev"
				;;
			memcached@alpine)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libmemcached-libs"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile $PHPIZE_DEPS libmemcached-dev zlib-dev"
				;;
			memcached@debian)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libmemcachedutil2"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libmemcached-dev zlib1g-dev"
				;;
			msgpack@alpine)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile $PHPIZE_DEPS"
				;;
			mssql@alpine)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent freetds"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile freetds-dev"
				;;
			mssql@debian)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libsybdb5"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile freetds-dev"
				;;
			odbc@alpine)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent unixodbc"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile $PHPIZE_DEPS unixodbc-dev"
				;;
			odbc@debian)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libodbc1"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile unixodbc-dev"
				;;
			parallel@alpine)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile $PHPIZE_DEPS"
				;;
			pcov@alpine)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile $PHPIZE_DEPS"
				;;
			pdo_dblib@alpine)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent freetds"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile freetds-dev"
				;;
			pdo_dblib@debian)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libsybdb5"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile freetds-dev"
				;;
			pdo_firebird@alpine)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile $PHPIZE_DEPS icu-dev ncurses-dev"
				;;
			pdo_firebird@debian)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libfbclient2"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile firebird-dev libib-util"
				;;
			pdo_odbc@alpine)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent unixodbc"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile $PHPIZE_DEPS unixodbc-dev"
				;;
			pdo_odbc@debian)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libodbc1"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile unixodbc-dev"
				;;
			pdo_pgsql@alpine)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent postgresql-libs"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile postgresql-dev"
				;;
			pdo_pgsql@debian)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libpq5"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libpq-dev"
				;;
			pdo_sqlsrv@alpine)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libstdc++ unixodbc"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile $PHPIZE_DEPS unixodbc-dev"
				;;
			pdo_sqlsrv@debian)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libodbc1 odbcinst"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile unixodbc-dev"
				;;
			pgsql@alpine)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent postgresql-libs"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile postgresql-dev"
				;;
			pgsql@debian)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libpq5"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libpq-dev"
				;;
			pspell@alpine)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent aspell-libs"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile aspell-dev"
				;;
			pspell@debian)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libaspell15"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libpspell-dev"
				;;
			pthreads@alpine)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile $PHPIZE_DEPS"
				;;
			recode@alpine)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent recode"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile recode-dev"
				;;
			recode@debian)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent librecode0"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile librecode-dev"
				;;
			redis@alpine)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile $PHPIZE_DEPS"
				;;
			snmp@alpine)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent net-snmp-libs"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile net-snmp-dev"
				;;
			snmp@debian)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent snmp"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libsnmp-dev"
				;;
			soap@alpine)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libxml2-dev"
				;;
			soap@debian)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libxml2-dev"
				;;
			solr@alpine)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile $PHPIZE_DEPS curl-dev libxml2-dev"
				;;
			solr@debian)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libcurl3-gnutls"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libcurl4-gnutls-dev libxml2-dev"
				;;
			sqlsrv@alpine)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent libstdc++ unixodbc"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile $PHPIZE_DEPS unixodbc-dev"
				;;
			sqlsrv@debian)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent unixodbc"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile unixodbc-dev"
				;;
			ssh2@alpine)
				buildRequiredPackageLists_persistent="$buildRequiredPackageLists_persistent $PHPIZE_DEPS libssh2"
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile $PHPIZE_DEPS libssh2-dev"
				;;
			ssh2@debian)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libssh2-1-dev"
				;;
			sybase_ct@debian)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile freetds-dev"
				;;
			tidy@debian)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libtidy-dev"
				;;
			uuid@debian)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile uuid-dev"
				;;
			wddx@debian)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libxml2-dev"
				;;
			xmlrpc@debian)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libxml2-dev"
				;;
			xsl@debian)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libxslt-dev"
				;;
			yaml@debian)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile libyaml-dev"
				;;
			zip@debian)
				buildRequiredPackageLists_volatile="$buildRequiredPackageLists_volatile cmake zlib1g-dev libbz2-dev libmbedtls-dev"
				;;
		esac
	done
	PACKAGES_PERSISTENT=''
	PACKAGES_VOLATILE=''
	if test -z "$buildRequiredPackageLists_persistent$buildRequiredPackageLists_volatile"; then
		return 0
	fi
	case "$buildRequiredPackageLists_distro" in
		alpine)
			apk update
			;;
		debian)
			DEBIAN_FRONTEND=noninteractive apt-get update
			DEBIAN_FRONTEND=noninteractive apt-get autoremove --purge -y
			;;
	esac
	if test -n "$buildRequiredPackageLists_persistent"; then
		PACKAGES_PERSISTENT="$(expandPackagesToBeInstalled $buildRequiredPackageLists_persistent)"
	fi
	if test -n "$buildRequiredPackageLists_volatile"; then
		resetIFS
		for buildRequiredPackageLists_package in $(expandPackagesToBeInstalled $buildRequiredPackageLists_volatile); do
			if ! stringInList "$buildRequiredPackageLists_package" "$PACKAGES_PERSISTENT"; then
				PACKAGES_VOLATILE="$PACKAGES_VOLATILE $buildRequiredPackageLists_package"
			fi
		done
		PACKAGES_VOLATILE="${PACKAGES_VOLATILE# }"
	fi
}

# Get the full list of APT/APK packages that will be installed, given the required packages
#
# Arguments:
#   $1: the list of required APT/APK packages
#
# Output:
#   Space-separated list of every APT/APK packages that will be installed
expandPackagesToBeInstalled () {
	expandPackagesToBeInstalled_result=''
	case "$(getDistro)" in
		alpine)
			IFS='
'
			for expandPackagesToBeInstalled_line in $(apk add --simulate $@); do
				if test -n "$(printf '%s' "$expandPackagesToBeInstalled_line" | grep -E '^\([0-9]*/[0-9]*) Installing ')"; then
					expandPackagesToBeInstalled_result="$expandPackagesToBeInstalled_result $(printf '%s' "$expandPackagesToBeInstalled_line" | cut -d ' ' -f 3)"
				fi
			done
			resetIFS
			;;
		debian)
			expandPackagesToBeInstalled_inNewPackages=0
			IFS='
'
			for expandPackagesToBeInstalled_line in $(DEBIAN_FRONTEND=noninteractive apt-get install -sy $@); do
				if test $expandPackagesToBeInstalled_inNewPackages -eq 0; then
					if test "$expandPackagesToBeInstalled_line" = 'The following NEW packages will be installed:'; then
						expandPackagesToBeInstalled_inNewPackages=1
					fi
				elif test "$expandPackagesToBeInstalled_line" = "${expandPackagesToBeInstalled_line# }"; then
					break
				else
					resetIFS
					for expandPackagesToBeInstalled_newPackage in $expandPackagesToBeInstalled_line; do
						expandPackagesToBeInstalled_result="$expandPackagesToBeInstalled_result $expandPackagesToBeInstalled_newPackage"
					done
					IFS='
'
				fi
			done
			resetIFS
			;;
	esac
	printf '%s' "${expandPackagesToBeInstalled_result# }"
}

# Install the required APT/APK packages
#
# Arguments:
#   $@: the list of APT/APK packages to be installed
installRequiredPackages () {
	printf '### INSTALLING REQUIRED PACKAGES ###\n'
	case "$(getDistro)" in
		alpine)
			apk add $PACKAGES_PERSISTENT $PACKAGES_VOLATILE
			;;
		debian)
			DEBIAN_FRONTEND=noninteractive apt-get install -y $PACKAGES_PERSISTENT $PACKAGES_VOLATILE
			;;
	esac
}

# Install a bundled PHP module given its handle
#
# Arguments:
#   $1: the numeric PHP Major-Minor version
#   $2: the handle of the PHP module
#
# Set:
#   UNNEEDED_PACKAGE_LINKS
#
# Output:
#   Nothing
installBundledModule () {
	printf '### INSTALLING BUNDLED MODULE %s ###\n' "$2"
	case "$2" in
		gd)
			if test $1 -le 506; then
				docker-php-ext-configure gd --with-gd --with-jpeg-dir --with-png-dir --with-zlib-dir --with-xpm-dir --with-freetype-dir --enable-gd-native-ttf --with-vpx-dir
			elif test $1 -le 701; then
				docker-php-ext-configure gd --with-gd --with-jpeg-dir --with-png-dir --with-zlib-dir --with-xpm-dir --with-freetype-dir --enable-gd-native-ttf --with-webp-dir
			elif test $1 -le 703; then
				docker-php-ext-configure gd --with-gd --with-jpeg-dir --with-png-dir --with-zlib-dir --with-xpm-dir --with-freetype-dir --with-webp-dir
			else
				docker-php-ext-configure gd --enable-gd --with-webp --with-jpeg --with-xpm --with-freetype
			fi
			;;
		gmp)
			case "$1" in
				506)
					if ! test -f /usr/include/gmp.h; then
						ln -s /usr/include/x86_64-linux-gnu/gmp.h /usr/include/gmp.h
						UNNEEDED_PACKAGE_LINKS="$UNNEEDED_PACKAGE_LINKS /usr/include/gmp.h"
					fi
					;;
			esac
			;;
		imap)
			PHP_OPENSSL=yes docker-php-ext-configure imap --with-kerberos --with-imap-ssl
			;;
		interbase|pdo_firebird)
			case "$(getDistro)" in
				alpine)
					if ! test -d /tmp/src/firebird; then
						mv "$(getPackageSource https://github.com/FirebirdSQL/firebird/releases/download/R2_5_9/Firebird-2.5.9.27139-0.tar.bz2)" /tmp/src/firebird
						cd /tmp/src/firebird
						#Patch rwlock.h (this has been fixed in later release of firebird 3.x)
						sed -i '194s/.*/#if 0/'  src/common/classes/rwlock.h
						./configure --with-system-icu
						# -j option can't be used: make targets must be compiled sequentially
						make -s btyacc_binary gpre_boot libfbstatic libfbclient
						cp gen/firebird/lib/libfbclient.so /usr/lib/
						ln -s /usr/lib/libfbclient.so /usr/lib/libfbclient.so.2
						cd -
					fi
					CFLAGS='-I/tmp/src/firebird/src/jrd -I/tmp/src/firebird/src/include -I/tmp/src/firebird/src/include/gen' docker-php-ext-configure $2
					;;
			esac
			;;
		ldap)
			docker-php-ext-configure ldap --with-libdir=lib/$(gcc -dumpmachine)
			;;
		mssql|pdo_dblib)
			case "$1" in
				506|700|701|702|703|704)
					if ! test -f /usr/lib/libsybdb.so; then
						ln -s /usr/lib/x86_64-linux-gnu/libsybdb.so /usr/lib/libsybdb.so
						UNNEEDED_PACKAGE_LINKS="$UNNEEDED_PACKAGE_LINKS /usr/lib/libsybdb.so"
					fi
					;;
			esac
			;;
		odbc)
			case "$1" in
				506|700|701|702|703|704)
					docker-php-source extract
					cd /usr/src/php/ext/odbc
					phpize
					sed -ri 's@^ *test +"\$PHP_.*" *= *"no" *&& *PHP_.*=yes *$@#&@g' configure
					./configure --with-unixODBC=shared,/usr
					cd -
					;;
			esac
			;;
		pdo_odbc)
			docker-php-ext-configure pdo_odbc --with-pdo-odbc=unixODBC,/usr
			;;
		snmp)
			case "$(getDistro)" in
				alpine)
					mkdir -p -m 0755 /var/lib/net-snmp/mib_indexes
					;;
			esac
			;;
		sybase_ct)
			docker-php-ext-configure sybase_ct --with-sybase-ct=/usr
			;;
		zip)
			libZipSrc="$(getPackageSource https://libzip.org/download/libzip-1.5.2.tar.gz)"
			mkdir "$libZipSrc/build"
			cd "$libZipSrc/build"
			cmake ..
			make -j$(nproc) install
			cd -
			if test $1 -le 703; then
				docker-php-ext-configure zip --with-libzip
			else
				docker-php-ext-configure zip --with-zip
			fi
			;;
	esac
	docker-php-ext-install -j$(nproc) "$2"
}

# Fetch a tar.gz file, extract it and returns the path of the extracted folder.
#
# Arguments:
#   $1: the URL of the file to be downloaded
#
# Output:
#   The path of the extracted directory
getPackageSource () {
	mkdir -p /tmp/src
	getPackageSource_tempFile=$(mktemp -p /tmp/src)
	curl -L -s -S -o "$getPackageSource_tempFile" "$1"
	getPackageSource_tempDir=$(mktemp -p /tmp/src -d)
	cd "$getPackageSource_tempDir"
	tar -xzf "$getPackageSource_tempFile" 2>/dev/null || tar -xf "$getPackageSource_tempFile" 
	cd - >/dev/null
	unlink "$getPackageSource_tempFile"
	getPackageSource_outDir=''
	for getPackageSource_i in $(ls "$getPackageSource_tempDir"); do
		if test -n "$getPackageSource_outDir" || test -f "$getPackageSource_tempDir/$getPackageSource_i"; then
			getPackageSource_outDir=''
			break
		fi
		getPackageSource_outDir="$getPackageSource_tempDir/$getPackageSource_i"
	done
	if test -n "$getPackageSource_outDir"; then
		printf '%s' "$getPackageSource_outDir"
	else
		printf '%s' "$getPackageSource_tempDir"
	fi
}

# Install a PHP module given its handle from source code
#
# Arguments:
#   $1: the handle of the PHP module
#   $2: the URL of the module source code
#   $3: the options of the configure command
#   $4: the value of CFLAGS
installModuleFromSource () {
	printf '### INSTALLING MODULE %s FROM SOURCE CODE ###\n' "$1"
	installModuleFromSource_dir="$(getPackageSource "$2")"
	cd "$installModuleFromSource_dir"
	phpize
	./configure $3 CFLAGS="${4:-}"
	make -j$(nproc) install
	cd --
	docker-php-ext-enable "$1"
}

# Install a PECL PHP module given its handle
#
# Arguments:
#   $1: the numeric PHP Major-Minor version
#   $2: the handle of the PHP module
installPECLModule () {
	printf '### INSTALLING PECL MODULE %s ###\n' "$2"
	installPECLModule_actual="$2"
	installPECLModule_stdin='\n'
	case "$2" in
		apcu)
			if test $1 -le 506; then
				installPECLModule_actual="$2-4.0.11"
			fi
			;;
		memcached)
			if test $1 -lt 700; then
				installPECLModule_actual="$2-2.2.0"
				# --with-libmemcached-dir (default: no)      Set the path to libmemcached install prefix
			else
				installPECLModule_stdin=''
				# --with-libmemcached-dir (default: no)      Set the path to libmemcached install prefix
				installPECLModule_stdin="${installPECLModule_stdin}\n"
				# --with-zlib-dir (default: no)              Set the path to ZLIB install prefix
				installPECLModule_stdin="${installPECLModule_stdin}\n"
				# --with-system-fastlz (default: no)         Use system FastLZ library
				installPECLModule_stdin="${installPECLModule_stdin}no\n"
				# --enable-memcached-igbinary (default: no)  Enable memcached igbinary serializer support
				php --ri igbinary >/dev/null 2>/dev/null && installPECLModule_stdin="${installPECLModule_stdin}yes\n" || installPECLModule_stdin="${installPECLModule_stdin}no\n"
				# --enable-memcached-msgpack (default: no)   Enable memcached msgpack serializer support
				php --ri msgpack >/dev/null 2>/dev/null && installPECLModule_stdin="${installPECLModule_stdin}yes\n" || installPECLModule_stdin="${installPECLModule_stdin}no\n"
				# --enable-memcached-json (default: no)      Enable memcached json serializer support
				installPECLModule_stdin="${installPECLModule_stdin}yes\n"
				# --enable-memcached-protocol (default: no)  Enable memcached protocol support
				installPECLModule_stdin="${installPECLModule_stdin}no\n" # https://github.com/php-memcached-dev/php-memcached/issues/418#issuecomment-449587972
				# --enable-memcached-sasl (default: yes)     Enable memcached sasl support
				installPECLModule_stdin="${installPECLModule_stdin}yes\n"
				# --enable-memcached-session (default: yes)  Enable memcached session handler support
				installPECLModule_stdin="${installPECLModule_stdin}yes\n"
			fi
			;;
		msgpack)
			if test $1 -le 506; then
				installPECLModule_actual="$2-0.5.7"
			fi
			;;
		parallel)
			if test $1 -le 701; then
				installPECLModule_actual="$2-0.8.3"
			fi
			;;
		pcov)
			if test $1 -lt 701; then
				installPECLModule_actual="$2-0.9.0"
			fi
			;;
		pdo_sqlsrv | sqlsrv)
			# https://docs.microsoft.com/it-it/sql/connect/php/system-requirements-for-the-php-sql-driver?view=sql-server-2017
			if test $1 -le 700; then
				installPECLModule_actual="$2-5.3.0"
			elif test $1 -ge 704; then
				installPECLModule_actual="$2-5.7.0preview"
			fi
			;;
		pthreads)
			if test $1 -lt 700; then
				installPECLModule_actual="$2-2.0.10"
			fi
			;;
		redis)
			if test $1 -le 506; then
				installPECLModule_actual="$2-4.3.0"
			fi
			# enable-redis-igbinary? enable-redis-lzf?
			php --ri igbinary >/dev/null 2>/dev/null && installPECLModule_stdin='yes\nyes\n' || installPECLModule_stdin='no\nyes\n'
			;;
		solr)
			if test $1 -le 506; then
				installPECLModule_actual="$2-2.4.0"
			fi
			;;
		ssh2)
			if test $1 -le 506; then
				installPECLModule_actual="$2-0.13"
			else
				# see https://bugs.php.net/bug.php?id=78560
				installPECLModule_actual='https://pecl.php.net/get/ssh2'
			fi
			;;
		xdebug)
			if test $1 -lt 501; then
				installPECLModule_actual="$2-2.0.5"
			elif test $1 -lt 504; then
				installPECLModule_actual="$2-2.2.7"
			elif test $1 -lt 505; then
				installPECLModule_actual="$2-2.4.1"
			elif test $1 -lt 700; then
				installPECLModule_actual="$2-2.5.5"
			elif test $1 -ge 704; then
				installPECLModule_actual="$2-2.8.0beta2"
			fi
			;;
		uopz)
			if test $1 -lt 700; then
				installPECLModule_actual="$2-2.0.7"
			elif test $1 -lt 701; then
				installPECLModule_actual="$2-5.0.2"
			fi
			;;
		yaml)
			if test $1 -lt 700; then
				installPECLModule_actual="$2-1.3.1"
			fi
			;;
	esac
	if test "$2" != "$installPECLModule_actual"; then
		printf '  (installing version %s)\n' "$installPECLModule_actual"
	fi
	printf "$installPECLModule_stdin" | pecl install "$installPECLModule_actual"
	docker-php-ext-enable "$2"
}

# Check if a string is in a list of space-separated string
#
# Arguments:
#   $1: the string to be checked
#   $2: the string list
#
# Return:
#   0 (true): if the string is in the list
#   1 (false): if the string is not in the list
stringInList () {
	for stringInList_listItem in $2; do
		if test "$1" = "$stringInList_listItem"; then
			return 0
		fi
	done
	return 1
}

# Remove a word from a space-separated list
#
# Arguments:
#   $1: the word to be removed
#   $2: the string list
#
# Output:
#   The list without the word
removeStringFromList () {
	removeStringFromList_result=''
	for removeStringFromList_listItem in $2; do
		if test "$1" != "$removeStringFromList_listItem"; then
			if test -z "$removeStringFromList_result"; then
				removeStringFromList_result="$removeStringFromList_listItem"
			else
				removeStringFromList_result="$removeStringFromList_result $removeStringFromList_listItem"
			fi
		fi
	done
	printf '%s' "$removeStringFromList_result"
}

# Cleanup everything at the end of the execution
cleanup () {
	cleanup_distro="$(getDistro)"
	if test -n "$UNNEEDED_PACKAGE_LINKS"; then
		printf '### REMOVING UNNEEDED PACKAGE LINKS ###\n'
		for cleanup_link in $UNNEEDED_PACKAGE_LINKS; do
			if test -L "$cleanup_link"; then
				rm -f "$cleanup_link"
			fi
		done
	fi
	if test -n "$PACKAGES_VOLATILE"; then
		printf '### REMOVING UNNEEDED PACKAGES ###\n'
		case "$cleanup_distro" in
			alpine)
				apk del --purge $PACKAGES_VOLATILE
				;;
			debian)
				DEBIAN_FRONTEND=noninteractive apt-get remove --purge -y $PACKAGES_VOLATILE
				;;
		esac
	fi
	case "$cleanup_distro" in
		alpine)
			rm -rf /var/cache/apk/*
			;;
		debian)
			rm -rf /var/lib/apt/lists/*
			;;
	esac
	docker-php-source delete
	rm -rf /tmp/pear
	rm -rf /tmp/src
}

resetIFS
PHP_MAJMIN_VERSION=$(getPHPMajorMinor)
case "$PHP_MAJMIN_VERSION" in
	506|700|701|702|703|704)
		;;
	*)
		printf "### ERROR: Unsupported PHP version: %s.%s ###\n" $(( PHP_MAJMIN_VERSION / 100 )) $(( PHP_MAJMIN_VERSION % 100 ))
esac
UNNEEDED_PACKAGE_LINKS=''
processCommandArguments "$@"

if test -z "$PHP_MODULES_TO_INSTALL"; then
	exit 0
fi

sortModulesToInstall

if buildRequiredPackageLists $PHP_MAJMIN_VERSION $PHP_MODULES_TO_INSTALL; then
	installRequiredPackages
fi
docker-php-source extract
BUNDLED_MODULES="$(find /usr/src/php/ext -mindepth 2 -maxdepth 2 -type f -name 'config.m4' | xargs -n1 dirname | xargs -n1 basename | xargs)"
for PHP_MODULE_TO_INSTALL in $PHP_MODULES_TO_INSTALL; do
	if stringInList "$PHP_MODULE_TO_INSTALL" "$BUNDLED_MODULES"; then
		installBundledModule $PHP_MAJMIN_VERSION "$PHP_MODULE_TO_INSTALL"
	else
		MODULE_SOURCE=''
		MODULE_SOURCE_CONFIGOPTIONS=''
		MODULE_SOURCE_CFLAGS=''
		case "$PHP_MODULE_TO_INSTALL" in
			cmark)
				MODULE_SOURCE=https://github.com/krakjoe/cmark/archive/v1.0.0.tar.gz
				cd "$(getPackageSource https://github.com/commonmark/cmark/archive/0.28.3.tar.gz)"
				make install
				cd -
				MODULE_SOURCE_CONFIGOPTIONS=--with-cmark
				;;
			igbinary)
				if test $PHP_MAJMIN_VERSION -lt 700; then
					MODULE_SOURCE="https://github.com/igbinary/igbinary/archive/2.0.8.tar.gz"
				else
					MODULE_SOURCE="https://github.com/igbinary/igbinary/archive/3.0.1.tar.gz"
				fi
				MODULE_SOURCE_CONFIGOPTIONS=--enable-igbinary
				MODULE_SOURCE_CFLAGS='-O2 -g'
				;;
		esac
		if test -n "$MODULE_SOURCE"; then
			installModuleFromSource "$PHP_MODULE_TO_INSTALL" "$MODULE_SOURCE" "$MODULE_SOURCE_CONFIGOPTIONS" "$MODULE_SOURCE_CFLAGS"
		else
			installPECLModule $PHP_MAJMIN_VERSION "$PHP_MODULE_TO_INSTALL"
		fi
	fi
done
cleanup