Stirling-PDF/.github/actions/java/action.yml

name: Local Java
description: Configure the JDK already installed on the GitHub Actions runner
inputs:
  java-version:
    description: JDK major version
    required: false
    default: "25"
  architecture:
    description: Compatibility input for existing workflow call sites
    required: false
    default: ""
runs:
  using: composite
  steps:
    - name: Configure preinstalled JDK
      shell: bash
      env:
        JAVA_VERSION: ${{ inputs.java-version }}
        JAVA_ARCHITECTURE: ${{ inputs.architecture }}
        RUNNER_ARCHITECTURE: ${{ runner.arch }}
        RUNNER_OS_NAME: ${{ runner.os }}
      run: |
        set -euo pipefail
        if [ "${JAVA_VERSION}" != "25" ]; then
          echo "This repository requires JDK 25; received ${JAVA_VERSION}" >&2
          exit 1
        fi

        architecture="${JAVA_ARCHITECTURE}"
        if [ -z "${architecture}" ]; then
          architecture="${RUNNER_ARCHITECTURE}"
        fi
        normalized_architecture="$(printf '%s' "${architecture}" | tr '[:lower:]' '[:upper:]')"
        case "${normalized_architecture}" in
          X64|AMD64|X86_64) architecture=X64 ;;
          ARM64|AARCH64) architecture=ARM64 ;;
          *) echo "Unsupported runner architecture: ${architecture}" >&2; exit 1 ;;
        esac

        java_home_variable="JAVA_HOME_${JAVA_VERSION}_${architecture}"
        java_home="${!java_home_variable:-}"
        if [ -z "${java_home}" ] && [ "${RUNNER_OS_NAME}" = "macOS" ] && [ "${architecture}" = "X64" ]; then
          java_home="$(arch -x86_64 /usr/libexec/java_home -v "${JAVA_VERSION}" 2>/dev/null || true)"
        fi
        if [ -z "${java_home}" ]; then
          echo "JDK 25 is not installed on this runner (${java_home_variable} is missing)" >&2
          exit 1
        fi

        shell_java_home="${java_home}"
        if command -v cygpath >/dev/null 2>&1; then
          shell_java_home="$(cygpath --unix "${java_home}")"
        fi

        export JAVA_HOME="${shell_java_home}"
        export PATH="${shell_java_home}/bin:${PATH}"
        echo "JAVA_HOME=${java_home}" >> "${GITHUB_ENV}"
        echo "${java_home}/bin" >> "${GITHUB_PATH}"
        java -version 2>&1 | tee "${RUNNER_TEMP}/java-version.txt"
        grep -Eq "version \"${JAVA_VERSION}(\.|\")" "${RUNNER_TEMP}/java-version.txt"