abuild.in

		fi
	done

	# find all packages that holds the so files
	if [ -f "$dir"/.rpaths ]; then
		local so_files=$(find_so_files "$dir"/.rpaths $missing) \
			|| return 1
		deppkgs=$($APK info --quiet --who-owns $so_files) || return 1
	fi

	for found in $deppkgs; do
		if grep -w "^depend = ${found}$" "$dir"/.PKGINFO >/dev/null ; then
			warning "You can remove '$found' from depends"
			continue
		fi
		autodeps="$autodeps $found"
	done

	echo "# automatically detected:" >> "$dir"/.PKGINFO
	if [ -f "$dir"/.provides-so ]; then
		sed 's/^\(.*\) \([0-9].*\)/provides = so:\1=\2/' "$dir"/.provides-so \
			>> "$dir"/.PKGINFO
	fi
	[ -z "$autodeps" ] && return 0
	for i in $autodeps; do
		echo "depend = $i"
	done | sort -u >> "$dir"/.PKGINFO
	# display all depends
	sed -n '/^depend =/s/depend = /\t/p' "$dir"/.PKGINFO >&2
}

find_scanelf_paths() {
	local datadir="$1"
	local paths="$datadir/lib:$datadir/usr/lib" i= rpaths=
	if [ -n "$ldpath" ]; then
		paths="$paths:$(echo "${datadir}${ldpath}" | sed "s|:|:$datadir|g")"
	fi
	# search in all rpaths
	for rpaths in "$pkgbasedir"/.control.*/.rpaths; do
		[ -f "$rpaths" ] || continue
		while read i; do
			local dir="${datadir}${i}"
			IFS=:
			if [ -d "$dir" ] && ! list_has "$dir" $paths; then
				paths="$paths:${dir}"
			fi
			unset IFS
		done < "$rpaths"
	done
	echo "$paths"
}

scan_shared_objects() {
	local name="$1" controldir="$2" datadir="$3"
	local opt= i=

	# allow spaces in paths
	IFS=:
	set -- $(find_scanelf_paths "$datadir")
	unset IFS

	# sanity check, verify that each path is prefixed with datadir
	for i; do
		if [ "${i#$datadir}" = "$i" ]; then
			error "Internal error in scanelf paths"
			return 1
		fi
	done

	if options_has "ldpath-recursive"; then
		opt="--recursive"
	fi
	msg "Scanning shared objects"
	# lets tell all the .so files this package provides in .provides-so
	scanelf --nobanner --soname $opt "$@" | while read etype soname file; do
		# if soname field is missing, soname will be the filepath
		sover=0
		if [ -z "$file" ]; then
			file="$soname"
			soname=${soname##*/}
		fi

		# we only want shared libs
		case $soname in
		*.so|*.so.[0-9]*|*.c32);;
		*) continue;;
		esac

		case "$file" in
		*.so.[0-9]*) sover=${file##*.so.};;
		*.so)
			# filter out sonames with version when file does not
			# have version
			case "$soname" in
			*.so.[0-9]*)
				if options_has "sover-namecheck"; then
					continue
				fi
			esac
			;;
		esac
		list_has "$soname" $somask && continue
		echo "$soname $sover"
	# use awk to filter out dupes that has sover = 0
	done | awk '{ if (so[$1] == 0) so[$1] = $2; }
		END { for (i in so) print(i " " so[i]); }' \
		| sort -u > "$controldir"/.provides-so

	# verify that we dont have any duplicates
	local dupes="$(cut -d' ' -f1 "$controldir"/.provides-so | uniq -d)"
	if [ -n "$dupes" ]; then
		die  "provides multiple versions of same shared object: $dupes"
	fi

	# now find the so dependencies
	scanelf --nobanner --recursive --needed "$datadir"  | tr ' ' ':' \
		| awk -F ":" '$1 == "ET_DYN" || $1 == "ET_EXEC" {print $2}'  \
		| sed 's:,:\n:g' | sort -u \
	| while read soname; do
		# only add files that are not self provided
		grep -q -w "^$soname" "$controldir"/.provides-so \
			|| list_has "$soname" $somask \
			|| echo $soname
	done > "$controldir"/.needs-so
}

# read size in bytes from stdin and show as human readable
human_size() {
	awk '{  split("B KB MB GB TB PB", type)
		for(i=5; y < 1; i--)
			y = $1 / (2**(10*i))
		printf("%.1f %s\n", y, type[i+2]) }'
}

create_apks() {
	local file= dir= name= ver= apk= datadir= size=
	getpkgver || return 1
	mkdir -p "$PKGDEST"
	if [ "$arch" != "noarch" ] && ! options_has "!tracedeps"; then
		for file in "$pkgbasedir"/.control.*/.PKGINFO; do
			dir="${file%/.PKGINFO}"
			name="$(pkginfo_val pkgname $file)"
			datadir="$pkgbasedir"/$name
			subpkgname=$name
			scan_shared_objects "$name" "$dir" "$datadir"
		done
	fi
	for file in "$pkgbasedir"/.control.*/.PKGINFO; do
		dir="${file%/.PKGINFO}"
		name=$(pkginfo_val pkgname $file)
		ver=$(pkginfo_val pkgver $file)
		size=$(pkginfo_val size $file | human_size)
		apk=$name-$ver.apk
		datadir="$pkgbasedir"/$name
		subpkgname=$name

		trace_apk_deps "$name" "$dir" || return 1
		msg "Package size: ${size}"
		msg "Compressing data..."
		(
		cd "$datadir"
		# data.tar.gz
		set -- *
		if [ "$1" = '*' ]; then
			touch .dummy
			set -- .dummy
		fi
		tar -c "$@" | abuild-tar --hash | gzip -9 >"$dir"/data.tar.gz

		msg "Create checksum..."
		# append the hash for data.tar.gz
		local sha256=$(sha256sum "$dir"/data.tar.gz | cut -f1 -d' ')
		echo "datahash = $sha256" >> "$dir"/.PKGINFO

		# control.tar.gz
		cd "$dir"
		tar -c $(cat "$dir"/.metafiles) | abuild-tar --cut \
			| gzip -9 > control.tar.gz
		abuild-sign -q control.tar.gz || exit 1

		msg "Create $apk"
		# create the final apk
		cat control.tar.gz data.tar.gz > "$PKGDEST"/$apk
		)
	done
	subpkgname=
}

clean_abuildrepo() {
	local apk
	cd "$abuildrepo" || return 1

	# remove compat symlink
	for d in "$abuildrepo/$CARCH"; do
		[ -L "$d" ] && rm "$d"
	done

	# remove broken links from abuildrepo
	for apk in *.apk */*.apk; do
		if [ -L "$apk" ] && [ ! -f "$apk" ]; then
			rm -f "$apk"
		fi
	done
}

mklinks_abuildrepo() {
	[ -n "$REPODEST" ] && return 0
	local apk
	mkdir -p "$abuildrepo"/$CARCH
	cd "$abuildrepo" || return 1
	# create links for this package
	for apk in $(listpkg); do
		[ -f "$PKGDEST"/$apk ] || continue
		ln -sf "$PKGDEST"/$apk "$abuildrepo"/$CARCH/$apk
	done
}

build_abuildrepo() {
	local d apk _build=build
	if ! is_function package; then
		# if package() is missing then build is called from rootpkg
		_build=true
	fi
	if ! apk_up2date || [ -n "$force" ]; then
		logcmd "building $pkgname"
		sanitycheck && builddeps && clean && fetch && unpack \
			&& prepare && mkusers && $_build && rootpkg \
			&& cleanup $CLEANUP \
			|| return 1
	fi
	update_abuildrepo_index
}

update_abuildrepo_index() {
	clean_abuildrepo
	mklinks_abuildrepo

	cd "$abuildrepo"
	local index=$CARCH/APKINDEX.tar.gz

	msg "Updating the cached abuild repository index..."
	local sign=".SIGN.RSA.${SIGN_PUBLIC_KEY##*/}"
	local oldindex=
	if [ -f "$index" ]; then
		oldindex="--index $index"
	fi
	$APK index --quiet $oldindex --output "$index".unsigned \
		--description "$repo $(cd $startdir && git describe)" \
		--rewrite-arch $CARCH \
		$CARCH/*.apk || exit 1
	msg "Signing the index..."
	abuild-sign -q "$index".unsigned || exit 1
	mv "$index".unsigned "$index"
	chmod 644 "$index"
}

# predefined splitfunc doc
default_doc() {
	depends="$depends_doc"
	pkgdesc="$pkgdesc (documentation)"
	arch=${arch_doc:-"noarch"}

	local i
	for i in doc man info html sgml licenses gtk-doc ri; do
		if [ -d "$pkgdir/usr/share/$i" ]; then
			mkdir -p "$subpkgdir/usr/share"
			mv "$pkgdir/usr/share/$i" "$subpkgdir/usr/share/"
		fi
	done

	rm -f "$subpkgdir/usr/share/info/dir"

	# remove if empty, ignore error (not empty)
	rmdir "$pkgdir/usr/share" "$pkgdir/usr" 2>/dev/null

	return 0
}

doc() {
	default_doc
}

# predefined splitfunc dev
default_dev() {
	local i= j=
	depends="$pkgname=$pkgver-r$pkgrel $depends_dev"
	pkgdesc="$pkgdesc (development files)"

	for i in $origsubpackages; do
		[ "${i%:*}" = "$subpkgname" ] || depends="$depends ${i%:*}=$pkgver-r$pkgrel"
	done

	cd "$pkgdir" || return 0
	for i in usr/include usr/lib/pkgconfig usr/share/aclocal\
			usr/share/gettext usr/bin/*-config	\
			usr/share/vala/vapi usr/share/gir-[0-9]*\
			usr/share/qt/mkspecs			\
			$(find -name include -type d) 		\
			$(find lib/ usr/ -name '*.[acho]' 2>/dev/null); do
		if [ -e "$pkgdir/$i" ] || [ -L "$pkgdir/$i" ]; then
			d="$subpkgdir/${i%/*}"	# dirname $i
			mkdir -p "$d"
			mv "$pkgdir/$i" "$d"
			rmdir "$pkgdir/${i%/*}" 2>/dev/null
		fi
	done
	# move *.so links needed when linking the apps to -dev packages
	for i in lib/*.so usr/lib/*.so; do
		if [ -L "$i" ]; then
			mkdir -p "$subpkgdir"/"${i%/*}"
			mv "$i" "$subpkgdir/$i" || return 1
		fi
	done
	return 0
}

dev() {
	default_dev
}

# predefined splitfunc libs
default_libs() {
	pkgdesc="$pkgdesc (libraries)"
	local dir= file=
	for dir in lib usr/lib; do
		for file in "$pkgdir"/$dir/lib*.so.[0-9]*; do
			[ -f "$file" ] || continue
			mkdir -p "$subpkgdir"/$dir
			mv "$file" "$subpkgdir"/$dir/
		done
	done
}

libs() {
	default_libs
}

is_function() {
	type "$1" 2>&1 | head -n 1 | egrep -q "is a (shell )?function"
}

do_fakeroot() {
	if [ -n "$FAKEROOT" ]; then
		$FAKEROOT -- "$@"
	else
		"$@"
	fi
}

# build and package in fakeroot
rootpkg() {
	local _package=package
	if ! is_function package; then
		# if package() is missing then run 'build' in fakeroot instead
		warning "No package() function in APKBUILD"
		_package=build
	fi
	cd "$startdir"
	rm -rf "$pkgdir"
	[ -n "$FAKEROOT" ] && msg "Entering fakeroot..."
	do_fakeroot "$abuild_path" $color_opt \
		$_package \
		prepare_subpackages \
		prepare_language_packs \
		prepare_package \
		create_apks
}

srcpkg() {
	getpkgver || return 1
	local p="$pkgname-$pkgver-$pkgrel"
	local prefix="${startdir##*/}"
	local i files="$prefix/APKBUILD"
	for i in $source; do
		files="$files $prefix/$(filename_from uri $i)"
	done
	mkdir -p "$PKGDEST"
	msg "Creating source package $p.src.tar.gz..."
	(cd .. && tar -zcf "$PKGDEST/$p.src.tar.gz" $files)
}

# return true if arch is supported or noarch
check_arch() {
	list_has $CARCH $arch || [ "$arch" = "noarch" ] || [ "$arch" = "all" ]
}

# return true if libc is not masked in options
check_libc() {
	! list_has "!libc_$CLIBC" $options
}

# check if package is up to date
apk_up2date() {
	getpkgver || return 1
	local pkg="$PKGDEST/$pkgname-$pkgver-r$pkgrel.apk"
	local i s
	cd "$startdir"
	for i in $pkgname $subpackages; do
		[ -f "$PKGDEST/$pkgname-$pkgver-r$pkgrel.apk" ] || return 1
	done
	[ -n "$keep" ] && return 0

	for i in $source APKBUILD; do
		local s
		if is_remote "$i"; then
			s="$SRCDEST/$(filename_from_uri $i)"
		else
			s="$startdir/${i##*/}"
		fi
		if [ "$s" -nt "$pkg" ]; then
			return 1
		fi
	done
	return 0
}

abuildindex_up2date() {
	local i
	getpkgver || return 1
	local dir="$abuildrepo"/$CARCH
	local apk="${pkgname%:*}-$pkgver-r$pkgrel.apk"
	local idx="$dir"/APKINDEX.tar.gz
	local file="$dir"/$apk

	# check if index is missing
	[ -f "$idx" ] || return 1

	# if link or file is missing, then we need update abuildrepo index
	[ -f "$file" ] || return 1

	# if file exists and is newer than index, then we need update index
	[ "$file" -nt "$idx" ] && return 1

	return 0
}

up2date() {
	check_arch || return 0
	check_libc || return 0
	apk_up2date && abuildindex_up2date
}

# rebuild package and abuildrepo index if needed
abuildindex() {
	up2date && return 0
	build_abuildrepo
}

# source all APKBUILDs and output:
#  1) origin of package
#  2) all dependencies
# the output is i in a format easy parseable for awk
depparse_aports() {
	# lets run this in a subshell since we source all APKBUILD here
	(
	aportsdir=$(realpath ${APKBUILD%/APKBUILD}/..)
	for i in $aportsdir/*/APKBUILD; do
		pkgname=
		subpackages=
		depends=
		makedepends=
		. $i
		dir=${i%/APKBUILD}
		deps=
		# filter out conflicts from deps and version info
		for j in $depends $makedepends; do
			case "$j" in
				!*) continue;;
			esac
			deps="$deps ${j%%[<>=]*}"
		done
		for j in $pkgname $subpackages; do
			echo "o ${j%%:*} $dir"
			set -- $deps
			echo -n "d ${j%%:*} $1"
			shift
			while [ $# -gt 0 ]; do
				echo -n ",$1"
				shift
			done
			echo
		done
	done
	)
}

deptrace() {
	local deps= i=
	# strip versions from deps
	for i in "$@"; do
		deps="$deps ${i%%[<>=]*}"
	done
	[ -z "$deps" ] && return 0
	(	depparse_aports
		if [ -z "$upgrade" ]; then
			# list installed pkgs and prefix with 'i '
			$APK info --quiet | sort |  sed 's/^/i /'
		fi
	) | awk -v pkgs="$deps" '

	function depgraph(pkg,	a, i) {
		if (visited[pkg])
			return 0;
		visited[pkg] = 1;
		split(deps[pkg], a, ",");
		for (i in a)
			depgraph(a[i]);
		print pkg ":" origin[pkg];

	}

	$1 == "i" { visited[$2] = 1 }
	$1 == "o" { origin[$2] = $3 }
	$1 == "d" { deps[$2] = $3 }
	END {
		split(pkgs, pkgarray);
		for (i in pkgarray)
			depgraph(pkgarray[i]);
	}
	'
}

# build and install dependencies
builddeps() {
	local pkg= i= missing= conflicts=
	local hostdeps= builddeps= installed_hostdeps= installed_builddeps=
	[ -n "$nodeps" ] && return 0
	msg "Analyzing dependencies..."

	# add depends unless it is a subpackage or package itself
	if [ "$CBUILD" != "$CHOST" -a -n "$CBUILDROOT" ] && [ -n "$makedepends_build" -o -n "$makedepends_host" ]; then
		for i in $BUILD_BASE $makedepends_build; do
			[ "$pkgname" = "${i%%[<>=]*}" ] && continue
			subpackages_has ${i%%[<>=]*} || builddeps="$builddeps $i"
		done
		for i in $depends $makedepends_host; do
			[ "$pkgname" = "${i%%[<>=]*}" ] && continue
			subpackages_has ${i%%[<>=]*} || hostdeps="$hostdeps $i"
		done
	else
		for i in $BUILD_BASE $depends $makedepends; do
			[ "$pkgname" = "${i%%[<>=]*}" ] && continue
			subpackages_has ${i%%[<>=]*} || builddeps="$builddeps $i"
		done
	fi

	installed_builddeps=$($APK info --installed $builddeps)
	[ -n "$hostdeps" ] && installed_hostdeps=$($APK info --root "$CBUILDROOT" --installed $hostdeps)

	# find which deps are missing
	for i in $builddeps; do
		if [ "${i#\!}" != "$i" ]; then
			$APK info --quiet --installed "${i#\!}" \
				&& conflicts="$conflicts ${i#\!}"
		elif ! deplist_has $i $installed_builddeps || [ -n "$upgrade" ]; then
			missing="$missing $i"
		fi
	done
	for i in $hostdeps; do
		if [ "${i#\!}" != "$i" ]; then
			$APK info --quiet --installed --root "$CBUILDROOT" "${i#\!}" \
				&& conflicts="$conflicts ${i#\!}"
		elif ! deplist_has $i $installed_hostdeps || [ -n "$upgrade" ]; then
			missing="$missing $i"
		fi
	done

	if [ -n "$conflicts" ]; then
		error "Conflicting package(s) installed:$conflicts"
		return 1
	fi

	if [ -z "$install_deps" ] && [ -z "$recursive" ]; then
		# if we dont have any missing deps we are done now
		[ -z "$missing" ] && return 0
		error "Missing dependencies: $missing Use -r to autoinstall or -R to build"
		return 1
	fi

	uninstall_after=".makedepends-$pkgname $uninstall_after"
	if [ -n "$install_deps" ] && [ -z "$recursive" ]; then
		# make a --simulate run first to detect missing deps
		# apk-tools --virtual is no goot at reporting those.
		msg "Installing packages on builder: $builddeps"
		$SUDO_APK add --repository "$abuildrepo" $apk_opt_wait \
			--simulate --quiet $builddeps || return 1
		$SUDO_APK add --repository "$abuildrepo" $apk_opt_wait \
			--virtual .makedepends-$pkgname $builddeps || return 1
		if [ -n "$hostdeps" ]; then
			msg "Installing packages on target host: $hostdeps"
			$SUDO_APK add --root "$CBUILDROOT" --repository "$abuildrepo" $apk_opt_wait \
				--simulate --quiet $hostdeps || return 1
			$SUDO_APK add --root "$CBUILDROOT" --repository "$abuildrepo" $apk_opt_wait \
				--virtual .makedepends-$pkgname $hostdeps || return 1
		fi
		return 0
	fi

	if [ -n "$CBUILDROOT" ]; then
		error "Recursive rebuilding is not supported when cross compiling."
		return 1
	fi
	[ -z "$recursive" ] && return 1

	# find dependencies that are installed but missing in repo.
	for i in $deps; do
		local m=$($APK search --repository "$abuildrepo" ${i%%[<>=]*})
		if [ -z "$m" ]; then
			missing="$missing $i"
		fi
	done

	for i in $(deptrace $missing); do
		# i = pkg:dir
		local dir=${i#*:}
		local pkg=${i%:*}

		# ignore if dependency is in other repo
		[ -d "$dir" ] || continue

		# break circular deps
		list_has $pkg $ABUILD_VISITED && continue
		export ABUILD_VISITED="$ABUILD_VISITED $pkg"

		msg "Entering $dir"
		cd "$dir" && $0 $forceroot $keep $quiet $install_deps \
			$recursive $upgrade $color_opt abuildindex || return 1
	done
	$SUDO_APK add --upgrade --repository "$abuildrepo" \
		$apk_opt_wait \
		--virtual .makedepends-$pkgname $deps
}

# replace the md5sums in the APKBUILD
checksum() {
	local s files
	[ -z "$source" ] && [ -n "${md5sums}${sha256sums}${sha512sums}" ] \
		&& msg "Removing checksums from APKBUILD"
	sed -i -e '/^md5sums="/,/"\$/d; /^md5sums=''/,/''\$/d' "$APKBUILD"
	sed -i -e '/^sha512sums="/,/"\$/d; /^sha512sums=''/,/''\$/d' "$APKBUILD"
	sed -i -e '/^sha256sums="/,/"\$/d; /^sha256sums=''/,/''\$/d' "$APKBUILD"
	[ -z "$source" ] && return 0
	fetch
	for s in $source; do
		files="$files $(filename_from_uri $s)"
	done

	# for compatibility/backporting reasons we still add md5sum
	msg "Updating the md5sums in APKBUILD..."
	md5sums="$(cd "$srcdir" && md5sum $files)" || die "md5sum failed"
	echo "md5sums=\"$md5sums\"" >>"$APKBUILD"

	msg "Updating the sha256sums in APKBUILD..."
	sha256sums="$(cd "$srcdir" && sha256sum $files)" \
		|| die "sha256sum failed"
	echo "sha256sums=\"$sha256sums\"" >>"$APKBUILD"

	msg "Updating the sha512sums in APKBUILD..."
	sha512sums="$(cd "$srcdir" && sha512sum $files)" \
		|| die "sha512sum failed"
	echo "sha512sums=\"$sha512sums\"" >>"$APKBUILD"
}

stripbin() {
	local bin
	if options_has "!strip" || [ "$arch" = "noarch" ]; then
		return 0
	fi
	cd "${subpkgdir:-$pkgdir}" || return 1
	msg "Stripping binaries"
	scanelf --recursive --nobanner --etype "ET_DYN,ET_EXEC" . \
		| sed -e 's:^ET_DYN ::' -e 's:^ET_EXEC ::' \
		| xargs -r ${CROSS_COMPILE}strip
}

# simply list target apks
listpkg() {
	local name
	getpkgver || return 1
	for name in $(listpkgnames) ; do
		echo "$name-$pkgver-r$pkgrel.apk"
	done
}

source_has() {
	local i
	for i in $source; do
		[ "$1" = "${i##*/}" ] && return 0
		[ "$1" = "${i%%::*}" ] && return 0
	done
	return 1
}

subpackages_has() {
	local i
	for i in $subpackages; do
		[ "$1" = "${i%:*}" ] && return 0
	done
	return 1
}

list_has() {
	local needle="$1"
	local i
	shift
	for i in $@; do
		[ "$needle" = "$i" ] && return 0
		[ "$needle" = "!$i" ] && return 1
	done
	return 1
}

# same as list_has but we filter version info
deplist_has() {
	local needle="$1"
	local i
	shift
	for i in $@; do
		i=${i%%[<>=]*}
		[ "$needle" = "$i" ] && return 0
		[ "$needle" = "!$i" ] && return 1
	done
	return 1
}

options_has() {
	list_has "$1" $options
}

depends_has() {
	deplist_has "$1" $depends
}

makedepends_has() {
	deplist_has "$1" $makedepends
}

md5sums_has() {
	list_has "$1" $md5sums
}

install_has() {
	list_has "$1" $install
}

# install package after build
post_add() {
	getpkgver || return 1
	local pkgf="$PKGDEST/$1-$pkgver-r$pkgrel.apk"
	local deps i
	if ! subpackages_has $1 && [ "$1" != "$pkgname" ]; then
		die "$1 is not built by this APKBUILD"
	fi
	# recursively install dependencies that are provided by this APKBUILD
	deps=$($APK index "$pkgf" 2>/dev/null | awk -F: '$1=="D" { print $2 }')
	for i in $deps; do
		if subpackages_has $i || [ "$i" = "$pkgname" ]; then
			post_add $i || return 1
		fi
	done
	$SUDO_APK add $apk_opt_wait --upgrade "$pkgf" \
		|| die "Failed to install $1"
}

deps() {
	local deps i
	$SUDO_APK add $apk_opt_wait --repository "$abuildrepo" \
		--virtual .makedepends-$pkgname \
		$makedepends
}

undeps (){
	$SUDO_APK del $apk_opt_wait .makedepends-$pkgname
	[ "$CBUILD" != "$CHOST" -a -n "$CBUILDROOT" ] &&
		$SUDO_APK del --root "$CBUILDROOT" $apk_opt_wait .makedepends-$pkgname
}

# compat
installdeps() { deps; }
uninstalldeps() { undeps; }

all() {
	if ! [ -n "$force" ]; then
		check_arch || return 0
		check_libc || return 0
	fi
	if up2date && [ -z "$force" ]; then
		msg "Package is up to date"
	else
		build_abuildrepo
	fi
}

# This abuild hook will checkout an svn or git repository by specifying
# $svnurl or $giturl in APKBUILD. You can checkout a specific branch in
# git by adding -b $branch in $giturl. $reporev will select the correct
# commit, revision or tag for you. If you specify $disturl your distfile
# will automatically be uploaded with rsync to the url provided.
# Base version defaults to 0 except if specified by $basever.

snapshot() {
        # check if we setup vars correctly
        [ -z "$disturl" ] && warning "Missing disturl in APKBUILD, auto uploading disabled."
        [ -z "$svnurl" ] && [ -z "$giturl" ] && die "Missding repository url in APKBUILD!"
        [ -n "$svnurl" ] && [ -n "$giturl" ] && die "You can only use a single repository!"
        local _date=$(date +%Y%m%d)
	local _format="tar.gz"
        # remove any repositories left in srcdir
        abuild clean
        mkdir -p "$srcdir" && cd "$srcdir"
        # clone git repo and archive
        if [ -n "$giturl" ]; then
                local _version=${verbase:-0}_git${_date}
                command -v git >/dev/null || \
                        die "Missing git! Install git to support git clone."
                [ -z "$reporev" ] && local _rev="HEAD" && local _depth="--depth=1"
                msg "Creating git snapshot: $pkgname-$_version"
                git clone $_depth --bare $giturl $pkgname-$_version || return 1
                git --git-dir $pkgname-$_version archive \
			--format=$_format \
                        -o $pkgname-$_version.$_format \
                        --prefix=$pkgname-$_version/ $_rev \
                        || return 1
        fi
        # export svn repo and archive
        if [ -n "$svnurl" ]; then
                local _version=${verbase:-0}_svn${_date}
                command -v svn >/dev/null || \
                        die "Missing svn! Install subverion to support svn export."
                [ -n "$reporev" ] && local _rev="-r $reporev"
                msg "Creating svn snapshot: $pkgname-$_version"
                svn export $_rev $svnurl $pkgname-$_version || return 1
                tar zcf $pkgname-$_version.$_format $pkgname-$_version || return 1
        fi
        # upload to defined distfiles url
        if [ -n "$disturl" ]; then
                command -v rsync >/dev/null || \
                        die "Missing rsync! Install rsync to enable automatic uploads."
                msg "Uploading to $disturl"
                rsync --progress -La $pkgname-$_version.$_format \
                        $disturl || return 1
                cd "$startdir"
                # set the pkgver to current date and update checksum
                sed -i -e "s/^pkgver=.*/pkgver=${_version}/" \
                        APKBUILD || return 1
                abuild checksum
                fi
}

hostspec_to_arch() {
	case "$1" in
	arm*-*-*-*eabi)		echo "armel" ;;
	arm*-*-*-*eabihf)	echo "armhf" ;;
	i[0-9]86-*-*-*)		echo "x86" ;;
	x86_64-*-*-*)		echo "x86_64" ;;
	*)			echo "unknown" ;;
	esac
}

hostspec_to_libc() {
	case "$1" in
	*-*-*-uclibc*)	echo "uclibc" ;;
	*-*-*-musl*)	echo "musl" ;;
	*-*-*-gnu*)	echo "eglibc" ;;
	*)		echo "uclibc" ;;
	esac
}

usage() {
	echo "$program $abuild_ver"
	echo "usage: $program [options] [-i PKG] [-P REPODEST] [-p PKGDEST]"
	echo "              [-s SRCDEST] [cmd] ..."
	echo "       $program [-c] -n PKGNAME[-PKGVER]"
	echo "Options:"
	echo " -c  Enable colored output"
	echo " -d  Disable dependency checking"
	echo " -f  Force specified cmd, even if they are already done"
	echo " -F  Force run as root"
	echo " -h  Show this help"
	echo " -i  Install PKG after successful build"
	echo " -k  Keep built packages, even if APKBUILD or sources are newer"
	echo " -m  Disable colors (monochrome)"
	echo " -p  Set package destination directory"
	echo " -P  Set PKGDEST to REPODEST/<repo>/\$CARCH, where repo is the parents dir name"
	echo " -q  Quiet"
	echo " -r  Install missing dependencies from system repository (using sudo)"
	echo " -R  Recursively build and install missing dependencies (using sudo)"
	echo " -s  Set source package destination directory"
	echo " -u  Recursively build and upgrade all dependencies (using sudo)"
	echo ""
	echo "Commands:"
	echo "  checksum    Generate checksum to be included in APKBUILD"
	echo "  fetch       Fetch sources to \$SRCDEST and verify checksums"
	echo "  sanitycheck Basic sanity check of APKBUILD"
	echo "  verify      Verify checksums"
	echo "  unpack      Unpack sources to \$srcdir"
	echo "  build       Compile and install package into \$pkgdir"
	echo "  listpkg     List target packages"
	echo "  package     Create package in \$PKGDEST"
	echo "  rootpkg     Run 'package', the split functions and create apks as fakeroot"
	echo "  clean       Remove temp build and install dirs"
	echo "  cleanoldpkg Remove binary packages except current version"
	echo "  cleanpkg    Remove already built binary and source package"
	echo "  cleancache  Remove downloaded files from \$SRCDEST"
	echo "  srcpkg      Make a source package"
	echo "  sourcecheck Check if remote source package exists upstream"
	echo "  up2date     Compare target and sources dates"
	echo "  deps        Install packages listed in makedepends and depends"
	echo "  undeps      Uninstall packages listed in makedepends and depends"
	echo "  snapshot    Create a \$giturl or \$svnurl snapshot and upload to \$disturl"
	echo ""
	exit 0
}

APKBUILD="${APKBUILD:-./APKBUILD}"
unset force
unset recursive
while getopts "cdfFhi:kimnp:P:qrRs:u" opt; do
	case $opt in
		'c') default_colors
		     color_opt="-c";;
		'd') nodeps=1;;
		'f') force="-f";;
		'F') forceroot="-F";;
		'h') usage;;
		'i') install_after="$install_after $OPTARG";;
		'k') keep="-k";;
		'm') monochrome
		     color_opt="-m";;
		'n') die "Use newapkbuild to create new aports";;
		'p') PKGDEST=$OPTARG;;
		'P') REPODEST=$OPTARG;;
		'q') quiet="-q";;
		'r') install_deps="-r";;
		'R') recursive="-R";;
		's') SRCDEST=$OPTARG;;
		'u') upgrade="-u"
		     recursive="-R";;
	esac
done
shift $(( $OPTIND - 1 ))

# check so we are not root
if [ "$(whoami)" = "root" ] && [ -z "$FAKEROOTKEY" ]; then
	[ -z "$forceroot" ] && die "Do not run abuild as root"
	FAKEROOT=
fi

# find startdir
[ -f "$APKBUILD" ] || die "Could not find $APKBUILD (PWD=$PWD)"
APKBUILD=$(readlink -f "$APKBUILD")

startdir="${APKBUILD%/*}"
srcdir=${srcdir:-"$startdir/src"}
pkgbasedir=${pkgbasedir:-"$startdir/pkg"}
pkgrel=0
repo=${startdir%/*}
repo=${repo##*/}

SRCDEST=${SRCDEST:-$startdir}
PKGDEST=${PKGDEST:-$startdir}

[ -z "$CBUILD" ] && CBUILD="$CHOST"
[ -z "$CTARGET" ] && CTARGET="$CHOST"
[ -z "$CARCH" ] && CARCH="$(hostspec_to_arch $CHOST)"
[ -z "$CLIBC" ] && CLIBC="$(hostspec_to_libc $CHOST)"
[ -z "$CTARGET_ARCH" ] && CTARGET_ARCH="$(hostspec_to_arch $CTARGET)"
[ -z "$CTARGET_LIBC" ] && CTARGET_LIBC="$(hostspec_to_libc $CTARGET)"

# set a default CC
: ${CC:=gcc}
export CC

cd "$startdir" || die
. "$APKBUILD"

# If REPODEST is set then it will override the PKGDEST
if [ -n "$REPODEST" ]; then
	PKGDEST="$REPODEST/$repo/$CARCH"
	# for recursive action
	export REPODEST
	abuildrepo="$REPODEST"/$repo
else
	abuildrepo="$abuildrepo_base"/$repo
fi

# if we want build debug package
if [ -n "$DEBUG" ]; then
	CFLAGS="$CFLAGS -g"
	options="$options !strip"
fi

# If we are handling a sub package then reset subpackages and install
if [ -n "$subpkgname" ]; then
	origsubpackages="$subpackages"
	subpackages=
fi
pkgdir="$pkgbasedir/$pkgname"
controldir="$pkgbasedir"/.control.${subpkgname:-$pkgname}