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#!/bin/bash

# Allowed licenses: build only for licenses in this array
ALLOWED_LICENSES=('GPL' 'GPL1' 'GPL2' 'LGPL' 'LGPL1' 'LGPL2')

if [ $# -ne 3 ]; then
	echo "usage: $(basename $0) <packagename> <repo> <arch>"
	exit 1
fi

BASEDIR="$(dirname $0)/../"
. "$BASEDIR/db-functions"

source_makepkg

packagename="$1"
reponame="$2"
arch="$3"

srcpath="$FTP_BASE/sources/"

WORKDIR="/tmp/make-sourceball.$packagename.$UID"

cleanup() {
	restore_umask
	rm -rf "$WORKDIR"
	[ "$1" ] && exit $1
}

ctrl_c() {
	echo "Interrupted" >&2
	cleanup 0
}

die() {
	echo "$*" >&2
	cleanup 1
}

#usage: chk_license ${license[@]}"
chk_license() {
	local l
	for l in "$@"; do
		l="$(echo $l | tr '[:upper:]' '[:lower:]')"
        for allowed in ${ALLOWED_LICENSES[@]}; do
            allowed="$(echo $allowed | tr '[:upper:]' '[:lower:]')"
            if [ "$l" = "$allowed" ]; then
                return 0
            fi
        done
	done

    return 1
}

create_srcpackage() {
    if [ -d "$1" ]; then
        pushd "$1" >/dev/null
        . "$BUILDSCRIPT"
        if ! chk_license ${license[@]}; then
            echo "Package license does not require source tarballs. Doing nothing"
            echo "   license => (${license[@]})"
            cleanup 0
        fi

        if ! /usr/bin/makepkg --allsource >/dev/null 2>&1; then
            popd >/dev/null
            return 1
        fi
        popd >/dev/null

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

        echo ":: Source package complete: $pkg_file"
        if [ ! -d "$srcpath" ]; then
            mkdir -p "$srcpath"
        fi
        #Remove old sourceballs
        for pkg in "$srcpath/$pkgname-"*; do
            pkg="$(basename $pkg)"
            if [ "$(getpkgname $pkg)" == "$pkgname" ]; then
                rm -f "$srcpath/$pkg"
            fi
        done
        cp "$pkgname/$pkg_file" "$srcpath"

        return 0
    fi
}

trap ctrl_c 2
trap cleanup 0 1

set_umask
/bin/mkdir -p "$WORKDIR"
cd "$WORKDIR"

echo "Creating Source tarball for $packagename ($reponame-$arch)"

if /usr/bin/svn export -q "$SVN_PATH/$packagename/repos/$reponame-$arch" $packagename; then
    create_srcpackage "$packagename"
    if [ $? -eq 0 ]; then
        exit 0
    elif [ $? -eq 1 ]; then
        #trunk sometimes has updated URLs
        echo ":: Failed to download source, attempting trunk build"
        rm -rf "$packagename"
        if /usr/bin/svn export -q "$SVN_PATH/$packagename/trunk" "$packagename"; then
            create_srcpackage "$packagename"
            if [ $? -eq 0 ]; then
                echo ":: Source package complete: $pkg_file"
                exit 0
            elif [ $? -eq 1 ]; then
                die ":: Failed to download source"
            elif [ $? -eq 2 ]; then
                die ":: Failed to compress package"
            else
                die ":: Unknown failure reason"
            fi
        fi
        exit 1
    elif [ $? -eq 2 ]; then
        die ":: Failed to compress package"
    fi
else
    die "Package '$packagename' does not exist in repo $reponame-$arch"
fi