terraform-providers: simplify update script

  * --force: Force the update even if the version matches.

  * --no-build: Don't build provider

  * --vendor-hash <SRI-hash>: Override the SHA256 or "null".

DOC

}

build=1

force=

provider=

build=1

vendorHash=

while [[ $# -gt 0 ]]; do

  case "$1" in

    build=0

    shift

    ;;

  --vendor-hash)

    force=1

    vendorHash=$2

    shift 2

    ;;

  *)

    if [[ -n ${provider} ]]; then

      echo "ERROR: provider name was passed two times: '${provider}' and '$1'"

homepage="$(read_attr homepage)"

old_vendor_hash=$(read_attr vendorHash)

old_rev=$(read_attr rev)

registry_response=$(curl -s "${homepage//providers/v1/providers}")

old_rev="$(read_attr rev)"

rev="$(jq -r '.tag' <<<"${registry_response}")"

if [[ ${old_rev} == "${rev}" && ${force} != 1 && -z ${vendorHash} && ${old_vendor_hash} != "${vendorHash}" ]]; then

if [[ ${force} != 1 ]]; then

  if [[ ${old_rev} == "${rev}" ]]; then

    echo_provider "already at version ${rev}"

    exit

  fi

if [[ ${rev//v/} =~ [[:alpha:]] && ${force} != 1 ]]; then

  if [[ ${rev//v/} =~ [[:alpha:]] ]]; then

    echo_provider "not updating to unstable version ${rev}"

    exit

  fi

fi

echo_provider "updating from ${old_rev} to ${rev}"

update_attr rev "${rev}"

hash=$(generate_hash src)

update_attr hash "${hash}"

if [[ -z ${vendorHash} ]]; then

  if [[ ${old_vendor_hash} == null ]]; then

    vendorHash=null

  else

old_vendor_hash="$(read_attr vendorHash)"

if [[ ${old_vendor_hash} != null ]]; then

  echo_provider "calculating vendorHash"

  vendorHash=$(generate_hash go-modules)

  fi

fi

  update_attr vendorHash "${vendorHash}"

fi

# Check that the provider builds

if [[ ${build} == 1 ]]; then