public static String replaceEnvVars()

in modules/vfs-class-loader/src/main/java/org/apache/accumulo/classloader/vfs/AccumuloVFSClassLoader.java [190:205]

• 15 lines of code
• 3 McCabe index (conditional complexity)

  public static String replaceEnvVars(String classpath, Map<String,String> env) {
    Pattern envPat = Pattern.compile("\\$[A-Za-z][a-zA-Z0-9_]*");
    Matcher envMatcher = envPat.matcher(classpath);
    while (envMatcher.find(0)) {
      // name comes after the '$'
      String varName = envMatcher.group().substring(1);
      String varValue = env.get(varName);
      if (varValue == null) {
        varValue = "";
      }
      classpath = (classpath.substring(0, envMatcher.start()) + varValue
          + classpath.substring(envMatcher.end()));
      envMatcher.reset(classpath);
    }
    return classpath;
  }