#!/bin/bash
# check-version [tag-version]: PKGBUILD pkgver, Cargo.toml version and, when
# given, the tag must all be the same string. Version lives in Cargo.toml;
# PKGBUILD mirrors it so makepkg needs no VCS pkgver().
set -euo pipefail
cd "$(dirname "$0")/.."
cargo=$(sed -n 's/^version = "\(.*\)"/\1/p' Cargo.toml | head -1)
pkg=$(sed -n 's/^pkgver=//p' PKGBUILD)
[ "$cargo" = "$pkg" ] || { echo "Cargo.toml $cargo != PKGBUILD pkgver $pkg" >&2; exit 1; }
if [ $# -gt 0 ]; then
    [ "$1" = "$cargo" ] || { echo "tag $1 != version $cargo" >&2; exit 1; }
fi
echo "version $cargo"