update-submodules

#!/bin/bash
#
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ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
. ${ROOT}/script/all-utilities || { echo "Cannot load Bash utilities"; exit 1; }

function update_workspace() {
  local key="${1}"
  local sha="${2}"

  sed -i -e "s|${key}\s=.*|${key} = \"${sha}\"|" "${ROOT}/WORKSPACE" \
    || error_exit "Could not update WORKSPACE for ${key}."
}

function commit_workspace() {
  local key="${1}"

  git add "${ROOT}/WORKSPACE" \
    && git commit -m "Updates ${key} in WORKSPACE" \
    || error_exit "Could not create commit for ${key} update in WORKSPACE."
}

while getopts :s: arg; do
  case ${arg} in
    s) SUBMODULES="${OPTARG}";;
    *) echo "Invalid option: -${OPTARG}";;
  esac
done

set_git

# SUBMODULES if of the form KEY1:SHA1,KEY2:SHA2
IFS=',' read -ra SUBMODULES <<< "${SUBMODULES}"
for submodule in "${SUBMODULES[@]}"; do
  key="${submodule%:*}"
  sha="${submodule##*:}"
  update_workspace "${key}" "${sha}"
  commit_workspace "${key}"
done