pack

#!/bin/bash
# depends on GNU TAR/SED
# author jjm2473

TAR=tar
gtar --version >/dev/null 2>&1 && TAR=gtar
SED=sed
gsed --version >/dev/null 2>&1 && SED=gsed

usage() {
    echo "$0 ABC"
    echo "    Pack ABC to ABC/../pkgname_version-release_arch.ipk"
}

[[ -z "$1" ]] && {
    usage
    exit 0
}

DIR=${1%%/}

[[ -d "$DIR" ]] || {
    echo "$DIR does not existed" >&2
    exit 1
}

[[ -f "$DIR/CONTROL/control" ]] || {
    echo "$DIR/CONTROL/control does not existed, maybe it's not an unpacked IPK" >&2
    exit 1
}

IPK=$(
    eval $(grep -E '^(Package|Version|Architecture): ' "$DIR/CONTROL/control" | $SED -e 's/: /=/')
    eval echo "\${Package}_\${Version}_\${Architecture}.ipk"
)

find "$DIR" -name '.DS_Store' -exec rm -f '{}' ';'

DESTDIR=$( cd "$DIR/.." ; echo $PWD; )

TMPDIR="$DESTDIR/IPKG_BUILD.$$"
mkdir "$TMPDIR"
echo "CONTROL" > "$TMPDIR/tarX"

TIMESTAMP=$(date)

$TAR -X "$TMPDIR/tarX" -cpzf "$TMPDIR/data.tar.gz" -C "$DIR" --numeric-owner --owner 0 --group 0 --format=gnu --sort=name --mtime="$TIMESTAMP" . || exit 1

installed_size=$(stat -c "%s" "$TMPDIR"/data.tar.gz 2>/dev/null || stat -f "%z" "$TMPDIR"/data.tar.gz 2>/dev/null)
[[ -n "$installed_size" ]] && $SED -i -e "s/^Installed-Size: .*/Installed-Size: $installed_size/" \
	"$DIR/CONTROL/control"

$TAR -czf "$TMPDIR/control.tar.gz" -C "$DIR/CONTROL" --numeric-owner --owner 0 --group 0 --format=gnu --sort=name --mtime="$TIMESTAMP" . || exit 1

echo "2.0" > "$TMPDIR/debian-binary"

$TAR -czf "$DESTDIR/$IPK" -C "$TMPDIR" --numeric-owner --owner 0 --group 0 --format=gnu --sort=name --mtime="$TIMESTAMP" ./debian-binary ./data.tar.gz ./control.tar.gz || exit 1

rm -rf "$TMPDIR"

echo "Successfully package $DIR to $DESTDIR/$IPK"