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#!/bin/bash
#
#   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.
#

# 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

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==> WARNING:\033[1;37m ${mesg}\033[0m\n" "$@" >&2
	else
		printf "==> WARNING: ${mesg}\n" "$@" >&2
	fi
}

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

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

# checks to see if options are present in makepkg.conf or PKGBUILD;
#   PKGBUILD options always take precedence
check_option() {
	local needle=$(echo $1 | tr [:upper:] [:lower:])
	local i
	# loop PKGBUILD opts first so it overrides makepkg.conf
	for i in ${options[@]}; do
		local lc=$(echo $i | tr [:upper:] [:lower:])
		if [ "$lc" = "$needle" ]; then
			echo "y"
			return
		elif [ "$lc" = "!$needle" ]; then
			echo "n"
			return
		# START DEPRECATED
		# TODO This code should be removed in the next release of makepkg
		elif [ "$lc" = "no$needle" ]; then
			warning "$(gettext "Options beginning with 'no' will be deprecated in the next version of makepkg!")"
			plain "$(gettext "Please replace 'no' with '!': no%s -> !%s.")" "$needle" "$needle"
			echo "n"
			return
		elif [ "$lc" = "keepdocs" -a "$needle" = "docs" ]; then
			warning "$(gettext "Option 'keepdocs' may not work as intended. Please replace with 'docs'.")"
		# END DEPRECATED
		fi
	done
	# fall back to makepkg.conf options
	for i in ${OPTIONS[@]}; do
		local lc=$(echo $i | tr [:upper:] [:lower:])
		if [ "$lc" = "$needle" ]; then
			echo "y"
			return
		elif [ "$lc" = "!$needle" ]; then
			echo "n"
			return
		fi
	done
	echo "$(gettext "unknown")"
	return
}

# check if option is present in BUILDENV
check_buildenv() {
	local needle=$(echo $1 | tr [:upper:] [:lower:])
	local i
	# use options from makepkg.conf
	for i in ${BUILDENV[@]}; do
		local lc=$(echo $i | tr [:upper:] [:lower:])
		if [ "$lc" = "$needle" ]; then
			echo "y"
			return
		elif [ "$lc" = "!$needle" ]; then
			echo "n"
			return
		fi
	done
	echo "$(gettext "unknown")"
	return
}

in_array() {
	local needle=$1
	shift 1
	[ -z "$1" ] && return 1
	for i in $*; do
		[ "$i" = "$needle" ] && return 0
	done
	return 1
}

getdownloadclient() {
	# $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 makepkg.conf.")" "$proto"
		error "$(gettext "Aborting...")"
		exit 1 # $E_CONFIG_ERROR # TODO: error code
	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.")" "$baseprog"
		error "$(gettext "Aborting...")"
		exit 1 # $E_MISSING_PROGRAM # TODO: error code
	fi

	echo "$agent"
}

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

	pmout=$(pacman $PACMAN_OPTS -T $*)
	ret=$?
	if [ $ret -eq 1 ]; then #unresolved deps
		echo "$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 striplist dep depstrip
	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 $striplist || ret=$?
		else
			pacman $PACMAN_OPTS -S $striplist || ret=$?
		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 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
}

resolvedeps() {
	local R_DEPS_SATISFIED=0
	local R_DEPS_MISSING=0

	deplist="$(checkdeps $*)"
	[ "$deplist" = "" ] && return $R_DEPS_SATISFIED

	if handledeps $deplist; then
		# check deps again to make sure they were resolved
		deplist="$(checkdeps $*)"
		[ "$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
removedeps() {
	[ "$RMDEPS" = "0" ] && return

	# runtimedeps and buildtimedeps are set when resolving deps
	local deplist="$runtimedeps $buildtimedeps"

	[ "$deplist" = "" ] && return

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

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

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

		# find the client we should use for this URL
		local dlclient=$(getdownloadclient $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")" "$file"
			msg "$(gettext "Aborting...")"
			exit 1
		fi

		if [ -n "$SRCDEST" ]; then
			mkdir -p "$SRCDEST" && cp "$file" "$SRCDEST" || ret=$?
			if [ $ret -gt 0 ]; then
				warning "$(gettext "You do not have correct permissions to cache source in %s")" "$SRCDEST"
				cp "$file" ..
			fi
		else
			cp "$file" ..
		fi
	done
}

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 "$(gettext "Cannot fin the '%s' program.")" "${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 "$netfile")"
			local sum="$(${integ}sum "$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 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
		unziphack=0
		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

		# fix flyspray #6246
		local file_type=$(file -biz "$file")
		local cmd=''
		case "$file_type" in
			*application/x-tar*application/x-compress*)
				cmd="tar -xzf $file" ;;
			*application/x-tar*)
				cmd="tar -xf $file" ;;
			*application/x-zip*)
				unziphack=1
				cmd="unzip -qqo $file" ;;
			*application/x-cpio*)
				cmd="bsdtar -x -f $file" ;;
			*application/x-gzip*)
				cmd="gunzip -d -f $file" ;;
			*application/x-bzip*)
				cmd="bunzip2 -f $file" ;;
		esac

		if [ "$cmd" != "" ]; then
			msg2 "$cmd"
			$cmd
			if [ $? -ne 0 ]; then
				# unzip will return a 1 as a warning, it is not an error
				if [ "$unziphack" != "1" -o $? -ne 1 ]; then
					error "$(gettext "Failed to extract %s")" "$file"
					msg "$(gettext "Aborting...")"
					exit 1
				fi
			fi
		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

	# check for "exit on syntax error" shell option
	echo $SHELLOPTS | grep errexit 2>&1 >/dev/null; set_e=$?

	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

		# use 'errexit' to bail on syntax error
		[ $set_e -eq 1 ] && set -e
		build 2>&1 | tee "$BUILDLOG"; ret=${PIPESTATUS[0]}
		[ $set_e -eq 1 ] && set +e
	else
		# use 'errexit' to bail on syntax error
		[ $set_e -eq 1 ] && set -e
		build 2>&1 || ret=$?
		[ $set_e -eq 1 ] && set +e
	fi

	if [ $ret -gt 0 ]; then
		error "$(gettext "Build Failed.  Aborting...")"
		removedeps
		exit 2 # $E_BUILD_FAILED # TODO: error code
	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 [ "$(check_option strip)" = "y" ]; then
		msg "$(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, aborting...")"
		exit 1 # $E_MISSING_PKGDIR # TODO: error code
	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}')

	# build a filelist - do this first to keep meta files out of the list
	msg2 "$(gettext "Generating .FILELIST file...")"
	tar -cvf /dev/null * | sort >.FILELIST

	# write the .PKGINFO file
	msg2 "$(gettext "Generating .PKGINFO file...")"
	echo "# Generated by makepkg $myver" >.PKGINFO
	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

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

	# do we have a changelog?
	if [ -f "$startdir/ChangeLog" ]; then
		msg2 "$(gettext "Copying 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}"
	comp_files="$comp_files .PKGINFO .FILELIST"

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

	create_xdelta "$pkg_file"
}

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 old_versions=( $(ls {"$cache_dir","$PKGDEST"}/${pkgname}-*-${CARCH}${PKGEXT} 2>/dev/null) )

	# Check to see if we have any old versions to create deltas with
	local old_file old_version latest_version base_file
	for old_file in "${old_versions[@]}"; do
		old_version=$(basename "${old_file%-$CARCH$PKGEXT}")
		old_version=${old_version#$pkgname-}
	
		# old_version may include the target package, only use the old versions
		if [ "$old_version" != "$pkgver-$pkgrel" ] && [[ "$old_version" > "$latest_version" ]]; then
			latest_version=$old_version
			base_file=$old_file
		fi
	done

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

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

installpackage() {
	[ "$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 "$(gettext "makepkg (pacman) %s")\n" "$myver"
	echo
	printf "$(gettext "Usage: %s [options]")\n" "$0"
	echo
	echo "$(gettext "Options:")"
	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 "$(gettext "makepkg (pacman) %s")\n" "$myver"
	echo "$(gettext "Copyright (C) 2002-2007 Judd Vinet <jvinet@zeroflux.org>.")"
	echo
	echo "$(gettext "This is free software; see the source for copying conditions.")"
	echo "$(gettext "There is NO WARRANTY, to the extent permitted by law.")"
	echo
}

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 "$(gettext "%s not found. cannot continue")" "$confdir/makepkg.conf"
	exit 1 # $E_CONFIG_ERROR # TODO: error codes
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

while [ "$#" -ne "0" ]; do
	case $1 in
		# pacman
		--noconfirm)      PACMAN_OPTS="$PACMAN_OPTS --noconfirm" ;;
		--noprogressbar)  PACMAN_OPTS="$PACMAN_OPTS --noprogressbar" ;;
		# makepkg
		--asroot)     ASROOT=1 ;;
		--clean)      CLEANUP=1 ;;
		--cleancache) CLEANCACHE=1 ;;
		--syncdeps)   DEP_BIN=1 ;;
		--builddeps)  DEP_SRC=1 ;;
		--nodeps)     NODEPS=1 ;;
		--noextract)  NOEXTRACT=1 ;;
		--install)    INSTALL=1 ;;
		--force)      FORCE=1 ;;
		--nobuild)    NOBUILD=1 ;;
		--nocolor)    USE_COLOR="n" ;;
		--geninteg)   GENINTEG=1 ;;
		--rmdeps)     RMDEPS=1 ;;
		--repackage)  REPKG=1 ;;
		--log)        LOGGING=1 ;;
		--source)     SOURCEONLY=1 ;;
		--help)
					usage
					exit 0 #E_OK
					;;
		--version)
					version
					exit 0 #E_OK
					;;
		--*)
					usage
					exit 1 #E_INVALID_OPTION
					;;
		-*)
		while getopts "bcCdefFghiLmop:rRsS-" opt; do
			case $opt in
				b) DEP_SRC=1 ;;
				c) CLEANUP=1 ;;
				C) CLEANCACHE=1 ;;
				d) NODEPS=1 ;;
				e) NOEXTRACT=1 ;;
				f) FORCE=1 ;;
				F) INFAKEROOT=1 ;;
				g) GENINTEG=1 ;;
				i) INSTALL=1 ;;
				L) LOGGING=1 ;;
				m) USE_COLOR="n" ;;
				o) NOBUILD=1 ;;
				p) BUILDSCRIPT=$OPTARG ;;
				r) RMDEPS=1 ;;
				R) REPKG=1 ;;
				s) DEP_BIN=1 ;;
				h)
						usage
						exit 0 #E_OK
						;;
				V)
						version
						exit 0 #E_OK
						;;
				-)
						OPTIND=0
						break
						;;
				*)
						usage
						exit 1 #E_INVALID_OPTION
						;;
			esac
		done
		;;
		*)
				true
				;;
	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" ]; then
		if [ ! $(type -p fakeroot) ]; then
			error "$(gettext "fakeroot must be installed if using the 'fakeroot' option")"
			plain "$(gettext "in the BUILDENV array in makepkg.conf.")"
			exit 1
		fi
	else
		warning "$(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 "pkgver is not allowed to be empty.")"
	exit 1
fi
if [ -z "$pkgrel" ]; then
	error "$(gettext "pkgrel is not allowed to be empty.")"
	exit 1
fi
if [ $(echo "$pkgver" | grep '-') ]; then
	error "$(gettext "pkgver is not allowed to contain hyphens.")"
	exit 1
fi
if [ $(echo "$pkgrel" | grep '-') ]; then
	error "$(gettext "pkgrel is not allowed to contain hyphens.")"
	exit 1
fi
if ! in_array $CARCH ${arch[@]}; then
	error "$(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
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.")"
		installpackage
		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
	deperr=0
	# these two variables are needed later by removedeps
	unset runtimedeps buildtimedeps

	msg "$(gettext "Checking Runtime Dependencies...")"
	resolvedeps ${depends[@]}
	ret=$?
	# deplist is a global variable set by resolvedeps
	runtimedeps="$deplist"
	if [ "$ret" != "0" ]; then
		deperr=1
	fi

	msg "$(gettext "Checking Buildtime Dependencies...")"
	resolvedeps ${makedepends[@]}
	ret=$?
	# deplist is a global variable set by resolvedeps
	buildtimedeps="$deplist"
	if [ "$ret" != "0" ]; then
		deperr=1
	fi

	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
cd "$startdir"
mkdir -p src
cd "$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")"
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"

		ret=0
		fakeroot -- $0 -F $ARGLIST || ret=$?
		[ $ret -ne 0 ] && exit $ret
		unset ret
	fi
fi

cd "$startdir"
if [ "$CLEANUP" = "1" ]; then
	msg "$(gettext "Cleaning up...")"
	rm -rf src pkg
	rm -rf ${pkgname}-${pkgver}-${pkgrel}-${CARCH}.log*
fi

removedeps

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

installpackage

exit 0 #E_OK

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