#!/bin/bash -e
#
#   makepkg - make packages compatable for use with pacman
#   @configure_input@
#
#   Copyright (c) 2002-2007 by Judd Vinet <jvinet@zeroflux.org>
#   Copyright (c) 2005 by Aurelien Foret <orelien@chez.com>
#   Copyright (c) 2006 by Miklos Vajna <vmiklos@frugalware.org>
#   Copyright (c) 2005 by Christian Hamar <krics@linuxforum.hu>
#   Copyright (c) 2006 by Alex Smith <alex@alex-smith.me.uk>
#   Copyright (c) 2006 by Andras Voroskoi <voroskoi@frugalware.org>
#
#   This program is free software; you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation; either version 2 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program; if not, write to the Free Software
#   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
#   USA.
#

# makepkg uses quite a few external programs during its execution. You
# need to have at least the following installed for makepkg to function:
#   awk, bsdtar (libarchive), bzip2, coreutils, fakeroot, find (findutils),
#   getopt (util-linux), gettext, grep, gzip, sed

# gettext initialization
export TEXTDOMAIN='pacman'
export TEXTDOMAINDIR='@localedir@'

myver='@PACKAGE_VERSION@'
confdir='@sysconfdir@'
startdir="$PWD"
srcdir="$startdir/src"
pkgdir="$startdir/pkg"

# Options
ASROOT=0
CLEANUP=0
CLEANCACHE=0
DEP_BIN=0
DEP_SRC=0
FORCE=0
INFAKEROOT=0
GENINTEG=0
INSTALL=0
NOBUILD=0
NODEPS=0
NOEXTRACT=0
RMDEPS=0
REPKG=0
LOGGING=0
SOURCEONLY=0
IGNOREARCH=0

PACMAN_OPTS=

### SUBROUTINES ###

plain() {
	local mesg=$1; shift
	if [ ! "$USE_COLOR" = "n" -a "$(check_buildenv color)" = "y" ]; then
		printf "\033[1;37m    ${mesg}\033[0m\n" "$@" >&2
	else
		printf "    ${mesg}\n" "$@" >&2
	fi
}

msg() {
	local mesg=$1; shift
	if [ ! "$USE_COLOR" = "n" -a "$(check_buildenv color)" = "y" ]; then
		printf "\033[1;32m==>\033[1;37m ${mesg}\033[0m\n" "$@" >&2
	else
		printf "==> ${mesg}\n" "$@" >&2
	fi
}

msg2() {
	local mesg=$1; shift
	if [ ! "$USE_COLOR" = "n" -a "$(check_buildenv color)" = "y" ]; then
		printf "\033[1;34m  ->\033[1;37m ${mesg}\033[0m\n" "$@" >&2
	else
		printf "  -> ${mesg}\n" "$@" >&2
	fi
}

warning() {
	local mesg=$1; shift
	if [ ! "$USE_COLOR" = "n" -a "$(check_buildenv color)" = "y" ]; then
		printf "\033[1;33m==> $(gettext "WARNING:")\033[1;37m ${mesg}\033[0m\n" "$@" >&2
	else
		printf "==> $(gettext "WARNING:") ${mesg}\n" "$@" >&2
	fi
}

error() {
	local mesg=$1; shift
	if [ ! "$USE_COLOR" = "n" -a "$(check_buildenv color)" = "y" ]; then
		printf "\033[1;31m==> $(gettext "ERROR:")\033[1;37m ${mesg}\033[0m\n" "$@" >&2
	else
		printf "==> $(gettext "ERROR:") ${mesg}\n" "$@" >&2
	fi
}


##
# Special exit call for traps, Don't print any error messages when inside,
# the fakeroot call, the error message will be printed by the main call.
##
trap_exit() {
	if [ "$INFAKEROOT" = "0" ]; then
		echo
		error "$@"
	fi
	exit 1
}


##
# Clean up function. Called automatically when the script exits.
##
clean_up() {
	local EXIT_CODE=$?

	if [ "$INFAKEROOT" = "1" ]; then
		# Don't clean up when leaving fakeroot, we're not done yet.
		return
	fi

	if [ $EXIT_CODE -eq 0 -a "$CLEANUP" = "1" ]; then
		# If it's a clean exit and -c/--clean has been passed...
		msg "$(gettext "Cleaning up...")"
		cd "$startdir"
		rm -rf pkg src
		if [ "$pkgname" != "" ]; then
			# Can't do this unless the BUILDSCRIPT has been sourced.
			rm -f "${pkgname}-${pkgver}-${pkgrel}-${CARCH}.log*"
		fi
	fi

	remove_deps
}


##
# Signal Traps
##
trap 'clean_up' 0
trap 'trap_exit "$(gettext "TERM signal caught. Exiting...")"' TERM HUP QUIT
trap 'trap_exit "$(gettext "Aborted by user! Exiting...")"' INT
trap 'trap_exit "$(gettext "An unknown error has occured. Exiting...")"' ERR


strip_url() {
	echo "$1" | sed 's|^.*://.*/||g'
}


##
# Checks to see if options are present in makepkg.conf or PKGBUILD;
# PKGBUILD options always take precedence.
#
#  usage : check_option( $option )
# return : y - enabled
#          n - disabled
#          ? - not found
##
check_option() {
	local ret=$(in_opt_array "$1" ${options[@]})
	if [ "$ret" != '?' ]; then
		echo $ret
		return
	fi

	# BEGIN DEPRECATED
	# TODO: This code should be removed in the next release of makepkg.
	local needle=$(echo $1 | tr [:upper:] [:lower:])
	local opt
	for opt in ${options[@]}; do
		opt=$(echo $opt | tr [:upper:] [:lower:])
		if [ "$opt" = "no$needle" ]; then
			warning "$(gettext "Options beginning with 'no' will be deprecated in the next version of makepkg!")"
			plain "$(gettext "Please replace 'no' with '!': %s -> %s.")" "no$needle" "!$needle"
			echo 'n' # Disabled
			return
		elif [ "$opt" = "keepdocs" -a "$needle" = "docs" ]; then
			warning "$(gettext "Option 'keepdocs' may not work as intended. Please replace with 'docs'.")"
			echo 'y' # Enabled
			return
		fi
	done
	# END DEPRECATED

	# fall back to makepkg.conf options
	ret=$(in_opt_array "$1" ${OPTIONS[@]})
	if [ "$ret" != '?' ]; then
		echo $ret
		return
	fi

	echo '?' # Not Found
}


##
# Check if option is present in BUILDENV
#
#  usage : check_buildenv( $option )
# return : y - enabled
#          n - disabled
#          ? - not found
##
check_buildenv() {
	echo $(in_opt_array "$1" ${BUILDENV[@]})
}


##
#  usage : in_opt_array( $needle, $haystack )
# return : y - enabled
#          n - disabled
#          ? - not found
##
in_opt_array() {
	local needle=$(echo $1 | tr [:upper:] [:lower:]); shift

	local opt
	for opt in "$@"; do
		opt=$(echo $opt | tr [:upper:] [:lower:])
		if [ "$opt" = "$needle" ]; then
			echo 'y' # Enabled
			return
		elif [ "$opt" = "!$needle" ]; then
			echo 'n' # Disabled
			return
		fi
	done

	echo '?' # Not Found
}


##
#  usage : in_array( $needle, $haystack )
# return : 0 - found
#          1 - not found
##
in_array() {
	local needle=$1; shift
	[ -z "$1" ] && return 1 # Not Found
	local item
	for item in "$@"; do
		[ "$item" = "$needle" ] && return 0 # Found
	done
	return 1 # Not Found
}

get_downloadclient() {
	# $1 = url with valid protocol prefix
	local url=$1
	local proto=$(echo $netfile | sed 's|://.*||')

	# loop through DOWNLOAD_AGENTS variable looking for protocol
	local i
	for i in "${DLAGENTS[@]}"; do
		local handler=$(echo $i | sed 's|::.*||')
		if [ "$proto" == "$handler" ]; then
			agent=$(echo $i | sed 's|^.*::||')
			break
		fi
	done

	# if we didn't find an agent, return an error
	if [ -z "$agent" ]; then
		error "$(gettext "There is no agent set up to handle %s URLs. Check %s.")" "$proto" "$confdir/makepkg.conf"
		plain "$(gettext "Aborting...")"
		exit 1 # $E_CONFIG_ERROR
	fi

	# ensure specified program is installed
	local program="$(echo $agent | awk '{print $1 }')"
	if [ ! -x "$program" ]; then
		local baseprog=$(basename $program)
		error "$(gettext "The download program %s is not installed.")" "$baseprog"
		plain "$(gettext "Aborting...")"
		exit 1 # $E_MISSING_PROGRAM
	fi

	echo "$agent"
}

check_deps() {
	[ $# -gt 0 ] || return

	pmout=$(pacman $PACMAN_OPTS -T "$@")
	ret=$?
	if [ $ret -eq 127 ]; then #unresolved deps
		echo "$pmout"
	elif [ $ret -ne 0 ]; then
		error "$(gettext "Pacman returned a fatal error (%i): %s")" "$ret" "$pmout"
		exit 1
	fi
}

handledeps() {
	local R_DEPS_SATISFIED=0
	local R_DEPS_MISSING=1

	[ $# -eq 0 ] && return $R_DEPS_SATISFIED

	local deplist="$*"
	local dep depstrip striplist
	for dep in $deplist; do
		depstrip="$(echo $dep | sed -e 's|=.*$||' -e 's|>.*$||' -e 's|<.*$||')"
		striplist="$striplist $depstrip"
	done

	if [ "$DEP_SRC" = "0" -a "$DEP_BIN" = "0" ]; then
		return $R_DEPS_MISSING
	fi

	if [ "$DEP_BIN" = "1" ]; then
		# install missing deps from binary packages (using pacman -S)
		msg "$(gettext "Installing missing dependencies...")"
		local ret=0

		if [ "$ASROOT" = 0 ]; then
			sudo pacman $PACMAN_OPTS -S --asdeps $striplist || ret=$?
		else
			pacman $PACMAN_OPTS -S --asdeps $striplist || ret=$?
		fi

		if [ $ret -ne 0 ]; then
			error "$(gettext "Pacman failed to install missing dependencies.")"
			exit 1 # TODO: error code
		fi
	elif [ "$DEP_SRC" = "1" ]; then
		msg "$(gettext "Building missing dependencies...")"

		# install missing deps by building them from source.
		# we look for each package name in $SRCROOT and build it.
		if [ "$SRCROOT" = "" ]; then
			error "$(gettext "Source root cannot be found - please make sure it is specified in %s.")" "$confdir/makepkg.conf"
			exit 1 # TODO: error code
		fi

		# TODO: handle version comparators (eg, glibc>=2.2.5)
		for dep in $striplist; do
			local candidates="$(find "$SRCROOT" -type d -name "$dep")"
			if [ "$candidates" = "" ]; then
				error "$(gettext "Could not find '%s' under %s")" "$dep" "$SRCROOT"
				exit 1 # TODO: error code
			fi

			local makepkg_opts='-i -c -b'
			[ "$RMDEPS" = "1" ] && makepkg_opts="$makepkg_opts -r"
			local ret packagedir
			for packagedir in $candidates; do
				if [ -f "$packagedir/$BUILDSCRIPT" ]; then
					cd "$packagedir"
					ret=0
					PKGDEST="$PKGDEST" makepkg $makepkg_opts || ret=$?
					[ $ret -eq 0 ] && continue 2
				fi
			done

			error "$(gettext "Failed to build '%s'")" "$dep"
			exit 1 # TODO: error code
		done
	fi

	# rerun any additional sh scripts found in /etc/profile.d/
	local script
	for script in /etc/profile.d/*.sh; do
		if [ -x $script ]; then
			source $script &>/dev/null
		fi
	done

	return $R_DEPS_SATISFIED
}

resolve_deps() {
	# $pkgdeps is a GLOBAL variable, used by remove_deps()
	local R_DEPS_SATISFIED=0
	local R_DEPS_MISSING=1

	local deplist="$(check_deps $*)"
	if [ "$deplist" = "" ]; then
		return $R_DEPS_SATISFIED
	else
		pkgdeps="$pkgdeps $deplist"
	fi

	if handledeps $deplist; then
		# check deps again to make sure they were resolved
		deplist="$(check_deps $*)"
		[ "$deplist" = "" ] && return $R_DEPS_SATISFIED
	elif [ "$DEP_BIN" = "1" -o "$DEP_SRC" = "1" ]; then
		error "$(gettext "Failed to install all missing dependencies.")"
	fi

	msg "$(gettext "Missing Dependencies:")"
	local dep
	for dep in $deplist; do
		msg2 "$dep"
	done

	return $R_DEPS_MISSING
}

# fix flyspray bug #5923
remove_deps() {
	# $pkgdeps is a GLOBAL variable, set by resolve_deps()
	[ "$RMDEPS" = "0" ] && return
	[ "$pkgdeps" = "" ] && return

	local dep depstrip deplist
	for dep in $pkgdeps; do
		depstrip=$(echo $dep | sed -e 's|=.*$||' -e 's|>.*$||' -e 's|<.*$||')
		deplist="$deplist $depstrip"
	done

	msg "Removing installed dependencies..."
	if [ "$ASROOT" = "0" ]; then
		sudo pacman $PACMAN_OPTS -Rs $deplist
	else
		pacman $PACMAN_OPTS -Rs $deplist
	fi
}

download_sources() {
	msg "$(gettext "Retrieving Sources...")"

	if [ ! -w "$SRCDEST" ] ; then
		error "$(gettext "You do not have write permission to store downloads in %s.")" "$SRCDEST"
		plain "$(gettext "Aborting...")"
		exit 1
	fi

	pushd "$SRCDEST" &>/dev/null

	local netfile
	for netfile in ${source[@]}; do
		local file=$(strip_url "$netfile")
		if [ -f "$startdir/$file" ]; then
			msg2 "$(gettext "Found %s in build dir")" "$file"
			cp -s --remove-destination "$startdir/$file" "$srcdir/"
			continue
		elif [ -f "$SRCDEST/$file" ]; then
			msg2 "$(gettext "Using cached copy of %s")" "$file"
			cp -s --remove-destination "$SRCDEST/$file" "$srcdir/"
			continue
		fi

		# find the client we should use for this URL
		local dlclient=$(get_downloadclient $netfile) || exit $?

		msg2 "$(gettext "Downloading %s...")" "$file"
		# fix flyspray bug #3289
		local ret=0
		$dlclient "$netfile" || ret=$?
		if [ $ret -gt 0 ]; then
			error "$(gettext "Failure while downloading %s")" "$file"
			plain "$(gettext "Aborting...")"
			exit 1
		fi
		cp -s --remove-destination "$SRCDEST/$file" "$srcdir/"
	done

	popd &>/dev/null
}

generate_checksums() {
	msg "$(gettext "Generating checksums for source files...")"
	plain ""

	local integ
	for integ in ${INTEGRITY_CHECK[@]}; do
		integ="$(echo $integ | tr [:upper:] [:lower:])"
		case "$integ" in
			md5|sha1|sha256|sha384|sha512) : ;;
			*)
				error "$(gettext "Invalid integrity algorithm '%s' specified.")" "$integ"
				exit 1;; # $E_CONFIG_ERROR
		esac

		if [ ! $(type -p "${integ}sum") ]; then
			error "$(gettext "Cannot find the '%s' program.")" "${integ}sum"
			exit 1 # $E_MISSING_PROGRAM
		fi

		local ct=0
		local numsrc=${#source[@]}
		echo -n "${integ}sums=("

		local i=0;
		local indent=''
		while [ $i -lt $((${#integ}+6)) ]; do
			indent="$indent "
			i=$(($i+1))
		done

		local netfile
		for netfile in ${source[@]}; do
			local file="$(strip_url "$netfile")"

			if [ ! -f "$file" ] ; then
				if [ ! -f "$SRCDEST/$file" ] ; then
					error "$(gettext "Unable to find source file %s to generate checksum.")" "$file"
					plain "$(gettext "Aborting...")"
					exit 1
				else
					file=$SRCDEST/$file
				fi
			fi

			local sum="$(${integ}sum "$file" | cut -d ' ' -f 1)"
			[ $ct -gt 0 ] && echo -n "$indent"
			echo -n "'$sum'"
			ct=$(($ct+1))
			[ $ct -lt $numsrc ] && echo
		done

		echo ")"
	done
}

check_checksums() {
	local integ
	for integ in ${INTEGRITY_CHECK[@]}; do
		integ="$(echo $integ | tr [:upper:] [:lower:])"
		case "$integ" in
			md5|sha1|sha256|sha384|sha512) : ;;
			*)
				error "$(gettext "Invalid integrity algorithm '%s' specified")" "$integ"
				exit 1;; # $E_CONFIG_ERROR
		esac

		if [ ! $(type -p "${integ}sum") ]; then
			error "$(gettext "Cannot find the '%s' program.")" "${integ}sum"
			exit 1 # $E_MISSING_PROGRAM
		fi

		local integrity_sums=($(eval echo \${${integ}sums[@]}))
		if [ ${#integrity_sums[@]} -eq ${#source[@]} ]; then
			msg "$(gettext "Validating source files with %s...")" "${integ}sums"
			local errors=0
			local idx=0
			local file
			for file in "${source[@]}"; do
				file="$(strip_url "$file")"
				echo -n "    $file ... " >&2

				if [ ! -f "$file" ] ; then
					if [ ! -f "$file" ] ; then
						echo "$(gettext "NOT FOUND")" >&2
						errors=1
						continue
					else
						file=$SRCDEST/$file
					fi
				fi

				if echo "${integrity_sums[$idx]}  $file" | ${integ}sum --status -c - &>/dev/null; then
					echo "$(gettext "Passed")" >&2
				else
					echo "$(gettext "FAILED")" >&2
					errors=1
				fi

				idx=$((idx + 1))
			done

			if [ $errors -gt 0 ]; then
				error "$(gettext "One or more files did not pass the validity check!")"
				exit 1 # TODO: error code
			fi
		else
			warning "$(gettext "Integrity checks (%s) are missing or incomplete.")" "$integ"
		fi
	done
}

extract_sources() {
	msg "$(gettext "Extracting Sources...")"
	local netfile
	for netfile in "${source[@]}"; do
		file=$(strip_url "$netfile")
		if in_array "$file" ${noextract[@]}; then
			#skip source files in the noextract=() array
			#  these are marked explicitly to NOT be extracted
			continue
		fi

		if [ ! -f "$file" ] ; then
			if [ ! -f "$SRCDEST/$file" ] ; then
				error "$(gettext "Unable to find source file %s for extraction.")" "$file"
				plain "$(gettext "Aborting...")"
				exit 1
			else
				file=$SRCDEST/$file
			fi
		fi

		# fix flyspray #6246
		local file_type=$(file -biz "$file")
		local cmd=''
		case "$file_type" in
			*application/x-tar*|*application/x-zip*|*application/x-cpio*)
				cmd="bsdtar -x -f $file" ;;
			*application/x-gzip*)
				cmd="gunzip -d -f $file" ;;
			*application/x-bzip*)
				cmd="bunzip2 -f $file" ;;
			*)
				# Don't know what to use to extract this file,
				# skip to the next file
				continue;;
		esac

		local ret=0
		msg2 "$cmd"
		$cmd || ret=$?
		if [ $ret -ne 0 ]; then
			error "$(gettext "Failed to extract %s")" "$file"
			plain "$(gettext "Aborting...")"
			exit 1
		fi
	done

	if [ $EUID -eq 0 ]; then
		# chown all source files to root.root
		chown -R root.root "$srcdir"
	fi
}

run_build() {
	# use distcc if it is requested (check buildenv and PKGBUILD opts)
	if [ "$(check_buildenv distcc)" = "y" -a "$(check_option distcc)" != "n" ]; then
		[ -d /usr/lib/distcc/bin ] && export PATH="/usr/lib/distcc/bin:$PATH"
		export DISTCC_HOSTS
	elif [ "$(check_option distcc)" = "n" ]; then
		# if it is not wanted, clear the makeflags too
		MAKEFLAGS=""
	fi

	# use ccache if it is requested (check buildenv and PKGBUILD opts)
	if [ "$(check_buildenv ccache)" = "y" -a "$(check_option ccache)" != "n" ]; then
		[ -d /usr/lib/ccache/bin ] && export PATH="/usr/lib/ccache/bin:$PATH"
	fi

	# clear user-specified makeflags if requested
	if [ "$(check_option makeflags)" = "n" ]; then
		MAKEFLAGS=""
	fi

	msg "$(gettext "Starting build()...")"
	cd "$srcdir"

	# ensure we have a sane umask set
	umask 0022

	# ensure all necessary build variables are exported
	export CFLAGS CXXFLAGS MAKEFLAGS CHOST

	local ret=0
	if [ "$LOGGING" = "1" ]; then
		BUILDLOG="${startdir}/${pkgname}-${pkgver}-${pkgrel}-${CARCH}.log"
		if [ -f "$BUILDLOG" ]; then
			local i=1
			while true; do
				if [ -f "$BUILDLOG.$i" ]; then
					i=$(($i +1))
				else
					break
				fi
			done
			mv "$BUILDLOG" "$BUILDLOG.$i"
		fi

		build 2>&1 | tee "$BUILDLOG"; ret=${PIPESTATUS[0]}
	else
		build 2>&1 || ret=$?
	fi

	if [ $ret -gt 0 ]; then
		error "$(gettext "Build Failed.")"
		plain "$(gettext "Aborting...")"
		remove_deps
		exit 2 # $E_BUILD_FAILED
	fi
}

tidy_install() {
	cd "$pkgdir"
	msg "$(gettext "Tidying install...")"

	if [ "$(check_option docs)" = "n" ]; then
		msg2 "$(gettext "Removing info/doc files...")"
		#fix flyspray bug #5021
		rm -rf ${DOC_DIRS[@]}
	fi

	if [ -d usr/share/man ]; then
		msg2 "$(gettext "Moving usr/share/man files to usr/man...")"
		mkdir -p usr/man
		cp -a usr/share/man/* usr/man/
		rm -rf usr/share/man
	fi


	msg2 "$(gettext "Compressing man pages...")"
	local manpage ext file link
	find {usr{,/local},opt/*}/man -type f 2>/dev/null | while read manpage ; do
		ext="${manpage##*.}"
		file="${manpage##*/}"
		if [ "$ext" != "gz" -a "$ext" != "bz2" ]; then
			# update symlinks to this manpage
			find {usr{,/local},opt/*}/man -lname "$file" 2>/dev/null | while read link ; do
				rm -f "$link"
				ln -sf "${file}.gz" "${link}.gz"
			done
			# compress the original
			gzip -9 "$manpage"
		fi
	done


	if [ "$(check_option strip)" = "y" ]; then
		msg2 "$(gettext "Stripping debugging symbols from binaries and libraries...")"
		for file in $(find {,*/}{bin,lib,sbin} -type f 2>/dev/null || true); do
			case "$(file -biz "$file")" in
				*application/x-sharedlib*)  # Libraries
					/usr/bin/strip --strip-debug "$file";;
				*application/x-executable*) # Binaries
					/usr/bin/strip "$file";;
			esac
		done
	fi

	if [ "$(check_option libtool)" = "n" ]; then
		msg2 "$(gettext "Removing libtool .la files...")"
		find -type f -name "*.la" -exec rm -f -- '{}' \;
	fi

	if [ "$(check_option emptydirs)" = "n" ]; then
		msg2 "$(gettext "Removing empty directories...")"
		find -depth -type d -empty -delete
	fi
}

create_package() {
	if [ ! -d "$pkgdir" ]; then
		error "$(gettext "Missing pkg/ directory.")"
		plain "$(gettext "Aborting...")"
		exit 1 # $E_MISSING_PKGDIR
	fi

	cd "$pkgdir"
	msg "$(gettext "Creating package...")"

	local builddate=$(LC_ALL= LANG= date -u "+%a %b %e %H:%M:%S %Y")
	if [ "$PACKAGER" != "" ]; then
		local packager="$PACKAGER"
	else
		local packager="Arch Linux (http://www.archlinux.org)"
	fi
	local size=$(du -sb | awk '{print $1}')

	msg2 "$(gettext "Generating .FILELIST file...")"
	# The following command does the following:
	# - find all directories and add a trailing /
	# - find all other files/links
	# - grep out dot files in root dir (e.g. .FILELIST .PKGINFO...)
	# - sort the list
	find -mindepth 1 \( -type d -printf '%P/\n' \) ,  \( ! -type d -printf '%P\n' \) \
		2>/dev/null | grep -v '^\.' | sort >.FILELIST

	# write the .PKGINFO file
	msg2 "$(gettext "Generating .PKGINFO file...")"
	echo "# Generated by makepkg $myver" >.PKGINFO
	if [ "$INFAKEROOT" = "1" ]; then
		echo "# using $(fakeroot -v)" >>.PKGINFO
	fi
	echo "# $(LC_ALL= LANG= date -u)" >>.PKGINFO
	echo "pkgname = $pkgname" >>.PKGINFO
	echo "pkgver = $pkgver-$pkgrel" >>.PKGINFO
	echo "pkgdesc = $pkgdesc" >>.PKGINFO
	echo "url = $url" >>.PKGINFO
	echo "builddate = $builddate" >>.PKGINFO
	echo "packager = $packager" >>.PKGINFO
	echo "size = $size" >>.PKGINFO
	if [ "$CARCH" != "" ]; then
		echo "arch = $CARCH" >>.PKGINFO
	fi

	local it
	for it in "${license[@]}"; do
		echo "license = $it" >>.PKGINFO
	done
	for it in "${replaces[@]}"; do
		echo "replaces = $it" >>.PKGINFO
	done
	for it in "${groups[@]}"; do
		echo "group = $it" >>.PKGINFO
	done
	for it in "${depends[@]}"; do
		echo "depend = $it" >>.PKGINFO
	done
	for it in "${conflicts[@]}"; do
		echo "conflict = $it" >>.PKGINFO
	done
	for it in "${provides[@]}"; do
		echo "provides = $it" >>.PKGINFO
	done
	for it in "${backup[@]}"; do
		echo "backup = $it" >>.PKGINFO
	done

	# TODO maybe remove this at some point
	# warn if license array is not present or empty
	if [ "$license" = "" ]; then
		warning "$(gettext "Please add a license line to your %s!")" "$BUILDSCRIPT"
		plain "$(gettext "Example for GPL'ed software: license=('GPL').")"
	fi

	local comp_files=".PKGINFO .FILELIST"

	# check for an install script
	# TODO: should we include ${pkgname}.install if it exists and $install is unset?
	if [ "$install" != "" ]; then
		msg2 "$(gettext "Adding install script...")"
		cp "$startdir/$install" .INSTALL
		comp_files="$comp_files .INSTALL"
	fi

	# do we have a changelog?
	if [ -f "$startdir/ChangeLog" ]; then
		msg2 "$(gettext "Adding package changelog...")"
		cp "$startdir/ChangeLog" .CHANGELOG
		comp_files="$comp_files .CHANGELOG"
	fi

	# tar it up
	msg2 "$(gettext "Compressing package...")"

	local pkg_file="$PKGDEST/${pkgname}-${pkgver}-${pkgrel}-${CARCH}${PKGEXT}"

	if ! bsdtar -czf "$pkg_file" $comp_files $(ls); then
		error "$(gettext "Failed to create package file.")"
		exit 1 # TODO: error code
	fi
}

create_xdelta() {
	if [ "$(check_buildenv xdelta)" != "y" ]; then
		return
	elif [ ! "$(type -p xdelta)" ]; then
		error "$(gettext "Cannot find the xdelta binary! Is xdelta installed?")"
		return
	fi

	local pkg_file=$1
	local cache_dir="/var/cache/pacman/pkg" # TODO: autoconf me
	local pkginfo="$(mktemp "$startdir"/xdelta-pkginfo.XXXXXXXXX)"

	local old_file old_version
	for old_file in $(ls {"$cache_dir","$PKGDEST"}/${pkgname}-*-*{,-$CARCH}$PKGEXT 2>/dev/null); do
		bsdtar -xOf "$oldfile" .PKGINFO > "$pkginfo" || continue
		if [ "$(cat "$pkginfo" | grep '^pkgname = ')" != "pkgname = $pkgname" ]; then
			continue # Package name does not match.
		elif [ "$(cat "$pkginfo" | grep '^arch = ')" != "arch = $CARCH" ] ; then
			continue # Not same arch.
		fi

		old_version="$(cat "$pkginfo" | grep '^pkgver = ' | sed 's/^pkgver = //')"

		# old_version may include the target package, only use the old versions
		local vercmp=$(vercmp "$old_version" "$latest_version")
		if [ "$old_version" != "$pkgver-$pkgrel" -a $vercmp -gt 0 ]; then
			local latest_version=$old_version
			local base_file=$old_file
		fi
	done

	rm -f "$pkginfo"

	if [ "$base_file" != "" ]; then
		msg "$(gettext "Making delta from version %s...")" "$latest_version"
		local delta_file="$PKGDEST/$pkgname-${latest_version}_to_$pkgver-$pkgrel-$CARCH.delta"

		# xdelta will decompress base_file & pkg_file into TMP_DIR (or /tmp if
		# TMP_DIR is unset) then perform the delta on the resulting tars
		xdelta delta "$base_file" "$pkg_file" "$delta_file"

		# Generate the final gz using xdelta for compression. xdelta will be our
		# common denominator compression utility between the packager and the users
		# makepkg and pacman must use the same compression algorithm or the delta
		# generated package may not match, producing md5 checksum errors.
		msg2 "$(gettext "Recreating package tarball from delta to match md5 signatures")"
		msg2 "$(gettext "NOTE: the delta should ONLY be distributed with this tarball")"
		xdelta patch "$delta_file" "$base_file" "$pkg_file"
	else
		warning "$(gettext "No previous version found, skipping xdelta.")"
	fi
}

create_srcpackage() {
	cd "$startdir"
	msg "$(gettext "Creating source package...")"
	local comp_files="PKGBUILD"
	msg2 "$(gettext "Adding %s...")" "PKGBUILD"

	if [ "$install" != "" ]; then
		if [ -f $install ]; then
			msg2 "$(gettext "Adding install script...")"
			comp_files="$comp_files $install"
		else
			error "$(gettext "Install script %s not found.")" "$install"
		fi
	fi

	if [ -f ChangeLog ]; then
		msg2 "$(gettext "Adding %s...")" "ChangeLog"
		comp_files="$comp_files ChangeLog"
	fi

	local i
	for i in ${source[@]}; do
		if [ -f $i ]; then
			msg2 "$(gettext "Adding %s...")" "$i"
			comp_files="$comp_files $i"
		fi
	done

	local pkg_file="$PKGDEST/${pkgname}-${pkgver}-${pkgrel}${SRCEXT}"

	# tar it up
	msg2 "$(gettext "Compressing source package...")"
	if ! bsdtar -czf "$pkg_file" $comp_files; then
		error "$(gettext "Failed to create source package file.")"
		exit 1 # TODO: error code
	fi
}

install_package() {
	[ "$INSTALL" = "0" ] && return

	msg "$(gettext "Installing package with pacman -U...")"
	if [ "$ASROOT" = "0" ]; then
		sudo pacman $PACMAN_OPTS -U $PKGDEST/${pkgname}-${pkgver}-${pkgrel}-${CARCH}${PKGEXT} || exit $?
	else
		pacman $PACMAN_OPTS -U $PKGDEST/${pkgname}-${pkgver}-${pkgrel}-${CARCH}${PKGEXT} || exit $?
	fi
}

usage() {
	printf "makepkg (pacman) %s\n" "$myver"
	echo
	printf "$(gettext "Usage: %s [options]")\n" "$0"
	echo
	echo "$(gettext "Options:")"
	printf "$(gettext "  -A, --ignorearch Ignore incomplete arch field in %s")\n" "$BUILDSCRIPT"
	echo "$(gettext "  -b, --builddeps  Build missing dependencies from source")"
	echo "$(gettext "  -c, --clean      Clean up work files after build")"
	echo "$(gettext "  -C, --cleancache Clean up source files from the cache")"
	echo "$(gettext "  -d, --nodeps     Skip all dependency checks")"
	echo "$(gettext "  -e, --noextract  Do not extract source files (use existing src/ dir)")"
	echo "$(gettext "  -f, --force      Overwrite existing package")"
	echo "$(gettext "  -g, --geninteg   Generate integrity checks for source files")"
	echo "$(gettext "  -h, --help       This help")"
	echo "$(gettext "  -i, --install    Install package after successful build")"
	echo "$(gettext "  -L, --log        Log package build process")"
	echo "$(gettext "  -m, --nocolor    Disable colorized output messages")"
	echo "$(gettext "  -o, --nobuild    Download and extract files only")"
	printf "$(gettext "  -p <buildscript> Use an alternate build script (instead of '%s')")\n" "$BUILDSCRIPT"
	echo "$(gettext "  -r, --rmdeps     Remove installed dependencies after a successful build")"
	# fix flyspray feature request #2978
	echo "$(gettext "  -R, --repackage  Repackage contents of pkg/ without building")"
	echo "$(gettext "  -s, --syncdeps   Install missing dependencies with pacman")"
	echo "$(gettext "      --asroot     Allow makepkg to run as root user")"
	echo "$(gettext "      --source     Do not build package; generate a source-only tarball")"
	echo
	echo "$(gettext "These options can be passed to pacman:")"
	echo
	echo "$(gettext "      --noconfirm      Do not ask for confirmation when resolving dependencies")"
	echo "$(gettext "      --noprogressbar  Do not show a progress bar when downloading files")"
	echo
	printf "$(gettext "If -p is not specified, makepkg will look for '%s'")\n" "$BUILDSCRIPT"
	echo
}

version() {
	printf "makepkg (pacman) %s\n" "$myver"
	printf "$(gettext "\
Copyright (C) 2002-2007 Judd Vinet <jvinet@zeroflux.org>.\n\n\
This is free software; see the source for copying conditions.\n\
There is NO WARRANTY, to the extent permitted by law.\n")"
}

ARGLIST=$@

#preserve environment variables
_PKGDEST=${PKGDEST}
_SRCDEST=${SRCDEST}

# Source makepkg.conf; fail if it is not found
if [ -r "$confdir/makepkg.conf" ]; then
	source "$confdir/makepkg.conf"
else
	error "$(gettext "%s not found.")" "$confdir/makepkg.conf"
	plain "$(gettext "Aborting...")"
	exit 1 # $E_CONFIG_ERROR
fi

# Source user-specific makepkg.conf overrides
if [ -r ~/.makepkg.conf ]; then
	source ~/.makepkg.conf
fi

# override settings with an environment variable for batch processing
PKGDEST=${_PKGDEST:-$PKGDEST}
PKGDEST=${PKGDEST:-$startdir} #default to $startdir if undefined
SRCDEST=${_SRCDEST:-$SRCDEST}
SRCDEST=${SRCDEST:-$startdir} #default to $startdir if undefined

# Only use ABSROOT if we haven't been passed a SRCROOT on the command line.
if [ -z "$SRCROOT" ]; then
	if [ -r "$confdir/abs/abs.conf" ]; then
		source "$confdir/abs/abs.conf"
	fi
	if [ -r ~/.abs.conf ]; then
		source ~/.abs.conf
	fi
	SRCROOT=$ABSROOT
fi

# Parse Command Line Options.
OPT_SHORT="bcCdefFghiLmop:rRsSV"
OPT_LONG="asroot,builddeps,clean,cleancache,nodeps,noextract,force,geninteg,help,install,log"
OPT_LONG="$OPT_LONG,nocolor,nobuild,rmdeps,repackage,source,syncdeps,usesudo,version"
# Pacman Options
OPT_LONG="$OPT_LONG,noconfirm,noprogressbar"
OPT_TEMP="$(getopt -o "$OPT_SHORT" -l "$OPT_LONG" -n "$(basename "$0")" -- "$@" || echo 'GETOPT GO BANG!')"
if echo "$OPT_TEMP" | grep -q 'GETOPT GO BANG!'; then
	# This is a small hack to stop the script bailing with 'set -e'
	echo; usage; exit 1 # E_INVALID_OPTION;
fi
eval set -- "$OPT_TEMP"
unset OPT_SHORT OPT_LONG OPT_TEMP

while true; do
	case "$1" in
		# Pacman Options
		--noconfirm)      PACMAN_OPTS="$PACMAN_OPTS --noconfirm" ;;
		--noprogressbar)  PACMAN_OPTS="$PACMAN_OPTS --noprogressbar" ;;

		# Makepkg Options
		--asroot)         ASROOT=1 ;;
		-A|--ignorearch)  IGNOREARCH=1 ;;
		-b|--builddeps)   DEP_SRC=1 ;;
		-c|--clean)       CLEANUP=1 ;;
		-C|--cleancache)  CLEANCACHE=1 ;;
		-d|--nodeps)      NODEPS=1 ;;
		-e|--noextract)   NOEXTRACT=1 ;;
		-f|--force)       FORCE=1 ;;
		-F)               INFAKEROOT=1 ;;
		-g|--geninteg)    GENINTEG=1 ;;
		-i|--install)     INSTALL=1 ;;
		-L|--log)         LOGGING=1 ;;
		-m|--nocolor)     USE_COLOR='n' ;;
		-o|--nobuild)     NOBUILD=1 ;;
		-r|--rmdeps)      RMDEPS=1 ;;
		-R|--repackage)   REPKG=1 ;;
		--source)         SOURCEONLY=1 ;;
		-s|--syncdeps)    DEP_BIN=1 ;;

		# BEGIN DEPRECATED
		-S|--usesudo)
			warning "$(gettext "Sudo is used by default now. The --usesudo option is deprecated!")" ;;
		# END DEPRECATED

		-h|--help)        usage; exit 0 ;; # E_OK
		-V|--version)     version; exit 0 ;; # E_OK

		--)               OPT_IND=0; shift; break;;
		*)                usage; exit 1 ;; # E_INVALID_OPTION
	esac
	shift
done


if [ "$CLEANCACHE" = "1" ]; then
	#fix flyspray feature request #5223
	if [ -n "$SRCDEST" -a "$SRCDEST" != "$startdir" ]; then
		msg "$(gettext "Cleaning up ALL files from %s.")" "$SRCDEST"
		echo -n "$(gettext "    Are you sure you wish to do this? [Y/n] ")"
		read answer
		answer=$(echo $answer | tr [:upper:] [:lower:])
		if [ "$answer" = "yes" -o "$answer" = "y" ]; then
			rm "$SRCDEST"/*
			if [ $? -ne 0 ]; then
				error "$(gettext "Problem removing files; you may not have correct permissions in %s")" "$SRCDEST"
				exit 1
			else
				# removal worked
				msg "$(gettext "Source cache cleaned.")"
				exit 0
			fi
		else
			# answer = no
			msg "$(gettext "No files have been removed.")"
			exit 0
		fi
	else
		# $SRCDEST is $startdir, two possibilities
		error "$(gettext "Source destination must be defined in makepkg.conf.")"
		plain "$(gettext "In addition, please run makepkg -C outside of your cache directory.")"
		exit 1
	fi
fi

if [ -z $BUILDSCRIPT ]; then
	error "$(gettext "BUILDSCRIPT is undefined! Ensure you have updated %s.")" "$confdir/makepkg.conf"
	exit 1
fi

if [ "$INFAKEROOT" = "0" ]; then
	if [ $EUID -eq 0 -a "$ASROOT" = "0" ]; then
		# Warn those who like to live dangerously.
		error "$(gettext "Running makepkg as root is a BAD idea and can cause")"
		plain "$(gettext "permanent, catastrophic damage to your system. If you")"
		plain "$(gettext "wish to run as root, please use the --asroot option.")"
		exit 1 # $E_USER_ABORT
	elif [ $EUID -gt 0 -a "$ASROOT" = "1" ]; then
		# Warn those who try to use the --asroot option when they are not root
		error "$(gettext "The --asroot option is meant for the root user only.")"
		plain "$(gettext "Please rerun makepkg without the --asroot flag.")"
		exit 1 # $E_USER_ABORT
	elif [ "$(check_buildenv fakeroot)" = "y" -a $EUID -gt 0 ]; then
		if [ ! $(type -p fakeroot) ]; then
			error "$(gettext "Fakeroot must be installed if using the 'fakeroot' option")"
			plain "$(gettext "in the BUILDENV array in %s.")" "$confdir/makepkg.conf"
			exit 1
		fi
	elif [ $EUID -gt 0 ]; then
		warning "$(gettext "Running makepkg as an unprivileged user will result in non-root")"
		plain "$(gettext "ownership of the packaged files. Try using the fakeroot environment by")"
		plain "$(gettext "placing 'fakeroot' in the BUILDENV array in makepkg.conf.")"
		sleep 1
	fi
else
	if [ "$FAKEROOTKEY" = "" ]; then
		error "$(gettext "Do not use the '-F' option. This option is only for use by makepkg.")"
		exit 1 # TODO: error code
	fi
fi

# check for sudo if we will need it during makepkg execution
if [ "$ASROOT" = "0" -a \( "$DEP_BIN" = "1" -o "$DEP_SRC" = "1" \
                           -o "$RMDEPS" = "1" -o "$INSTALL" = "1" \) ]; then
	if [ ! "$(type -p sudo)" ]; then
		error "$(gettext "Cannot find the sudo binary! Is sudo installed?")"
		plain "$(gettext "Missing dependencies cannot be installed or removed as a normal user")"
		plain "$(gettext "without sudo; install and configure sudo to auto-resolve dependencies.")"
		exit 1
	fi
fi

unset pkgname pkgver pkgrel pkgdesc url license groups provides md5sums force
unset replaces depends conflicts backup source install build makedepends
unset options noextract

if [ ! -f "$BUILDSCRIPT" ]; then
	error "$(gettext "%s does not exist.")" "$BUILDSCRIPT"
	exit 1
	#TODO this is an attempt at a generic way to unset all package specific
	#variables in a PKGBUILD
	#else
	#    #this is fun.... we'll unset
	#    for var in $(grep "=" $BUILDSCRIPT | sed "s|.*\(\<.*\>\)=.*|\1|g"); do
	#        unset $var
	#    done
fi

source "$BUILDSCRIPT"

# check for no-no's in the build script
if [ -z "$pkgver" ]; then
	error "$(gettext "%s is not allowed to be empty.")" "pkgver"
	exit 1
fi
if [ -z "$pkgrel" ]; then
	error "$(gettext "%s is not allowed to be empty.")" "pkgrel"
	exit 1
fi
if [ $(echo "$pkgver" | grep '-') ]; then
	error "$(gettext "%s is not allowed to contain hyphens.")" "pkgver"
	exit 1
fi
if [ $(echo "$pkgrel" | grep '-') ]; then
	error "$(gettext "%s is not allowed to contain hyphens.")" "pkgrel"
	exit 1
fi

if ! in_array $CARCH ${arch[@]}; then
	if "$IGNOREARCH" = "0" ]; then
		error "$(gettext "%s is not available for the '%s' architecture.")" "$pkgname" "$CARCH"
		plain "$(gettext "Note that many packages may need a line added to their %s")" "$BUILDSCRIPT"
		plain "$(gettext "such as arch=('%s').")" "$CARCH"
		exit 1
	else
		warning "$(gettext "%s is not available for the '%s' architecture.")" "$pkgname" "$CARCH"
		plain "$(gettext "Note that many packages may need a line added to their %s")" "$BUILDSCRIPT"
		plain "$(gettext "such as arch=('%s').")" "$CARCH"
	fi
fi

if [ "$install" -a ! -f "$install" ]; then
	error "$(gettext "Install scriptlet (%s) does not exist.")" "$install"
	exit 1
fi

if [ -f "$PKGDEST/${pkgname}-${pkgver}-${pkgrel}-${CARCH}${PKGEXT}" \
     -a "$FORCE" = "0" -a "$GENINTEG" = "0" -a "$SOURCEONLY" = "0" ]; then
	if [ "$INSTALL" = "1" ]; then
		warning "$(gettext "A package has already been built, installing existing package...")"
		install_package
		exit $?
	else
		error "$(gettext "A package has already been built. (use -f to overwrite)")"
		exit 1
	fi
fi

# Run the bear minimum in fakeroot
# fix flyspray bug 6208 -- using makepkg with fakeroot gives an error
if [ "$INFAKEROOT" = "1" ]; then
	if [ "$REPKG" = "1" ]; then
		warning "$(gettext "Skipping build.")"
	else
		run_build
		tidy_install
	fi

	create_package

	msg "$(gettext "Leaving fakeroot environment.")"
	exit 0 # $E_OK
fi

msg "$(gettext "Making package: %s")" "$pkgname $pkgver-$pkgrel  ($(date))"

if [ $EUID -eq 0 ]; then
	warning "$(gettext "Running makepkg as root...")"
fi

# if we are creating a source-only package, go no further
if [ "$SOURCEONLY" = "1" ]; then
	if [ -f "$PKGDEST/${pkgname}-${pkgver}-${pkgrel}${SRCEXT}" \
	     -a "$FORCE" = "0" ]; then
		error "$(gettext "A package has already been built. (use -f to overwrite)")"
		exit 1
	fi
	create_srcpackage
	msg "$(gettext "Source package created: %s")" "$pkgname ($(date))"
	exit 0
fi

# fix flyspray bug #5973
if [ "$NODEPS" = "1" -o "$GENINTEG" = "1" -o "$NOBUILD" = "1" -o "$REPKG" = "1" ]; then
	if [ "$NODEPS" = "1" ]; then
		warning "$(gettext "Skipping dependency checks.")"
	fi
	# skip printing a warning message for the others: geninteg, nobuild, repkg
elif [ $(type -p pacman) ]; then
	unset pkgdeps # Set by resolve_deps() and used by remove_deps()
	deperr=0

	msg "$(gettext "Checking Runtime Dependencies...")"
	resolve_deps ${depends[@]} || deperr=1

	msg "$(gettext "Checking Buildtime Dependencies...")"
	resolve_deps ${makedepends[@]} || deperr=1

	if [ $deperr -eq 1 ]; then
		error "$(gettext "Could not resolve all dependencies.")"
		exit 1
	fi
else
	warning "$(gettext "pacman was not found in PATH; skipping dependency checks.")"
fi

# get back to our src directory so we can begin with sources
mkdir -p "$srcdir"
cd "$srcdir"

if [ "$GENINTEG" = "1" ]; then
	download_sources
	generate_checksums
	exit 0 # $E_OK
fi

if [ "$NOEXTRACT" = "1" -o "$REPKG" = "1" ]; then
	warning "$(gettext "Skipping source retrieval        -- using existing src/ tree")"
	warning "$(gettext "Skipping source integrity checks -- using existing src/ tree")"
	warning "$(gettext "Skipping source extraction       -- using existing src/ tree")"

	if [ "$NOEXTRACT" = "1" -a "$(ls "$srcdir" 2>/dev/null)" = "" ]; then
		error "$(gettext "The source directory is empty, there is nothing to build!")"
		plain "$(gettext "Aborting...")"
		exit 1
	elif [ "$REPKG" = "1" -a \( ! -d "$pkgdir" -o "$(ls "$pkgdir" 2>/dev/null)" = "" \) ]; then
		error "$(gettext "The package directory is empty, there is nothing to repackage!")"
		plain "$(gettext "Aborting...")"
		exit 1
	fi
else
	download_sources
	check_checksums
	extract_sources
fi

if [ "$NOBUILD" = "1" ]; then
	msg "$(gettext "Sources are ready.")"
	exit 0 #E_OK
else
	# check for existing pkg directory; don't remove if we are repackaging
	if [ -d "$pkgdir" -a "$REPKG" = "0" ]; then
		msg "$(gettext "Removing existing pkg/ directory...")"
		rm -rf "$pkgdir"
	fi
	mkdir -p "$pkgdir"

	if [ $EUID -eq 0 ]; then
		# if we are root, then we don't need to recall makepkg with fakeroot
		if [ "$REPKG" = "1" ]; then
			warning "$(gettext "Skipping build.")"
		else
			run_build
			tidy_install
		fi

		create_package
	else
		msg "$(gettext "Entering fakeroot environment...")"
		cd "$startdir"

		fakeroot -- $0 -F $ARGLIST || exit $?
	fi

	create_xdelta "$PKGDEST/${pkgname}-${pkgver}-${pkgrel}-${CARCH}${PKGEXT}"
fi

msg "$(gettext "Finished making: %s")" "$pkgname ($(date))"

install_package

exit 0 #E_OK

# vim: set ts=2 sw=2 noet: