get-versions

#!/usr/bin/env bash

# $1: path to the software or provider directory
# $2: software name
function doCurlVersions() {
  local versions_url=$(cat "${1}/versions-url")
  # range of major versions for Java
  versions_url="${versions_url//\$\{major\}/[8-20]}"

  if [ ! -f "${1}/versions-url-op" ]
  then
    curl -s "${versions_url}" | awk -F "\"" '/tag_name/ {print $4}' | sed '/-beta.*/d;/-alpha.*/d;/-rc.*/d;/-pre.*/d;/-preview.*/d' | sort -V -r >> "./${2}/available-versions.tmp"
  else
    local versions_url_op=$(cat "${1}/versions-url-op")
    eval "curl -s "${versions_url}" | "${versions_url_op}"" >> "./${2}/available-versions.tmp"
  fi
}

for software in */;
do
  software=${software::-1}
  subdir_count=$(find "./${software}" -maxdepth 1 -type d | wc -l)
  temp_path="./${software}/available-versions.tmp"

  if [ "${subdir_count}" -eq 1 ]
  then
    doCurlVersions "./${software}" "${software}"
  else
    for subdir in ./${software}/*/;
    do
      subdir=$(basename "${subdir}")
      doCurlVersions "./${software}/${subdir}" "${software}"
    done

    if [ "${software}" == "java" ]
    then
      # Java workaround: convert versions to a different format (e.g. 11.0.9_11 -> 11.0.9.0.0.11), sort them, and convert them back
      sed -i 's/_/\.0\.0./' "${temp_path}" && sort -V -r -o "${temp_path}" "${temp_path}" && sed -i 's/\.0\.0./_/' "${temp_path}"
    else
      sort -V -r -o "${temp_path}" "${temp_path}"
    fi
  fi

  # update available-versions if curl was successful
  if [[ ! -z $(grep '[^[:space:]]' "${temp_path}") ]]
  then
    mv "${temp_path}" "./${software}/available-versions"
  else
    rm "${temp_path}"
    echo "${software}: Crawling versions failed. 'available-versions' has not been updated."
  fi
done