public InstalledRVM detect()

in rake-runner-agent/src/jetbrains/buildServer/agent/ruby/rvm/detector/impl/RVMDetectorForUNIX.java [26:53]

• 20 lines of code
• 8 McCabe index (conditional complexity)

  public InstalledRVM detect(@NotNull final Map<String, String> env) {
    // 1. Read "rvm_path" env variable
    // 2. Try to find local rvm (rvm_path = $HOME/.rvm)
    // 3. Try to find global rvm (rvm_path = /usr/local/.rvm)
    // NOTE: Steps 2 and 3 via 'which rvm'
    // custom or system wide rvm path

    @Nullable final String specialPath = determinePathUsingEnvVariable(env);
    @Nullable final String globalPath = determineGlobalRvmPath();
    @Nullable final String localPath = determineLocalRvmPath();

    if (specialPath != null) {
      if (localPath != null && specialPath.equals(localPath)) {
        return new InstalledRVM(localPath, InstalledRVM.Type.Local);
      } else if (globalPath != null && specialPath.equals(globalPath)) {
        return new InstalledRVM(globalPath, InstalledRVM.Type.Global);
      } else {
        return new InstalledRVM(specialPath, InstalledRVM.Type.Special);
      }
    } else if (localPath != null) {
      return new InstalledRVM(localPath, InstalledRVM.Type.Local);
    } else if (globalPath != null) {
      return new InstalledRVM(globalPath, InstalledRVM.Type.Global);
    } else {
      // Nothing founded
      return null;
    }
  }