openapi/openapi-client/src/main/java/org/apache/celeborn/rest/v1/worker/invoker/ApiClient.java [779:811]:
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  protected File prepareDownloadFile(String contentDisposition) throws IOException {
    String filename = null;
    if (contentDisposition != null && !"".equals(contentDisposition)) {
      // Get filename from the Content-Disposition header.
      Pattern pattern = Pattern.compile("filename=['\"]?([^'\"\\s]+)['\"]?");
      Matcher matcher = pattern.matcher(contentDisposition);
      if (matcher.find())
        filename = matcher.group(1);
    }

    String prefix;
    String suffix = null;
    if (filename == null) {
      prefix = "download-";
      suffix = "";
    } else {
      int pos = filename.lastIndexOf('.');
      if (pos == -1) {
        prefix = filename + "-";
      } else {
        prefix = filename.substring(0, pos) + "-";
        suffix = filename.substring(pos);
      }
      // Files.createTempFile requires the prefix to be at least three characters long
      if (prefix.length() < 3)
        prefix = "download-";
    }

    if (tempFolderPath == null)
      return Files.createTempFile(prefix, suffix).toFile();
    else
      return Files.createTempFile(Paths.get(tempFolderPath), prefix, suffix).toFile();
  }
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openapi/openapi-client/src/main/java/org/apache/celeborn/rest/v1/master/invoker/ApiClient.java [779:811]:
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  protected File prepareDownloadFile(String contentDisposition) throws IOException {
    String filename = null;
    if (contentDisposition != null && !"".equals(contentDisposition)) {
      // Get filename from the Content-Disposition header.
      Pattern pattern = Pattern.compile("filename=['\"]?([^'\"\\s]+)['\"]?");
      Matcher matcher = pattern.matcher(contentDisposition);
      if (matcher.find())
        filename = matcher.group(1);
    }

    String prefix;
    String suffix = null;
    if (filename == null) {
      prefix = "download-";
      suffix = "";
    } else {
      int pos = filename.lastIndexOf('.');
      if (pos == -1) {
        prefix = filename + "-";
      } else {
        prefix = filename.substring(0, pos) + "-";
        suffix = filename.substring(pos);
      }
      // Files.createTempFile requires the prefix to be at least three characters long
      if (prefix.length() < 3)
        prefix = "download-";
    }

    if (tempFolderPath == null)
      return Files.createTempFile(prefix, suffix).toFile();
    else
      return Files.createTempFile(Paths.get(tempFolderPath), prefix, suffix).toFile();
  }
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