private PowerShellInfo doDetect()

in powershell-agent/src/main/java/jetbrains/buildServer/powershell/agent/detect/cmd/CommandLinePowerShellDetector.java [148:189]
42 lines of code
10 McCabe index (conditional complexity)

  private PowerShellInfo doDetect(@NotNull final String homePath,
                                  @NotNull final String executable,
                                  @NotNull final String scriptPath,
                                  @NotNull final List<String> additionalParameters) {
    PowerShellInfo result = null;
    final File exeFile = new File(homePath, executable);
    if (LOG.isDebugEnabled()) {
      LOG.debug("Searching for PowerShell at " + exeFile.getAbsolutePath());
    }
    if (exeFile.isFile()) {
      if (LOG.isDebugEnabled()) {
        LOG.debug("Trying PowerShell executable: " + exeFile.getAbsolutePath());
      }
      String executablePath = exeFile.getAbsolutePath();
      try {
        final List<String> outputLines = myRunner.runDetectionScript(executablePath, scriptPath, additionalParameters);
        if (LOG.isDebugEnabled()) {
          LOG.debug("Detection script output at " + executablePath + "\n" + StringUtil.join(outputLines, "\n"));
        }
        if (outputLines.size() == 3) {
          final PowerShellEdition edition = PowerShellEdition.fromString(outputLines.get(1));
          if (edition != null) {
            result = new PowerShellInfo(Boolean.parseBoolean(outputLines.get(2)) ? PowerShellBitness.x64 : PowerShellBitness.x86, exeFile.getParentFile(), outputLines.get(0), edition, executable);
            LOG.info("Found: " + result);
          } else {
            LOG.warn("Failed to determine PowerShell edition for [" + executablePath + "]");
            LOG.debug(StringUtil.join("\n", outputLines));
          }
        } else {
          LOG.warn("Failed to parse output from PowerShell executable [" + executablePath + "]");
          LOG.debug(StringUtil.join("\n", outputLines));
        }
      } catch (ExecutionException e) {
        LOG.warnAndDebugDetails("Failed to run PowerShell detection script [" + scriptPath + "] with executable [" + executablePath + "]", e);
      }
    } else {
      if (LOG.isDebugEnabled()) {
        LOG.debug("PowerShell at " + exeFile.getAbsolutePath() + " was not found");
      }
    }
    return result;
  }