package ch.qos.logback.access.common.util;
   
   import ch.qos.logback.access.common.AccessConstants;
   
   import java.io.IOException;
   import java.io.InputStream;
   import java.util.Properties;
   
   /**
   * Utility class for retrieving version information about the "logback-access-common" module
   * based on the self-declared properties file.
   *
   *
   * @since 2.0.9
   */
  public class AccessCommonVersionUtil {
  
  
      static public String getAccessCommonVersionBySelfDeclaredProperties() {
          return getArtifactVersionBySelfDeclaredProperties(AccessConstants.class, "logback-access-common");
      }
  
      static public String getArtifactVersionBySelfDeclaredProperties(Class<?> aClass, String moduleName) {
          Properties props = new Properties();
          // example propertiesFileName: logback-core-version.properties
          //
          String propertiesFileName = moduleName + "-version.properties";
          String propertyKey = moduleName+"-version";
          try (InputStream is = aClass.getResourceAsStream(propertiesFileName)) {
              if (is != null) {
                  props.load(is);
                  return props.getProperty(propertyKey);
              } else {
                  return null;
              }
          } catch (IOException e) {
              return null;
          }
      }
  
  
  }