de.gwdg.metadataqa.marc.CsvUtils Maven / Gradle / Ivy

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package de.gwdg.metadataqa.marc;

import com.opencsv.CSVWriter;

import java.io.IOException;
import java.io.Serializable;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.List;

public class CsvUtils {

  public static String createCsv(List values) {
    return createCsv(asArray(values));
  }

  public static String createCsv(String[] values) {
    String csv = null;

    try (StringWriter sw = new StringWriter(); CSVWriter csvWriter = new CSVWriter(sw)) {
      csvWriter.writeNext(cleanRow(values), false);

      csv = sw.toString();
    } catch (IOException e) {
      e.printStackTrace();
    }

    return csv;
  }

  private static String[] asArray(List values) {
    List strings = new ArrayList<>();
    for (Serializable value : values) {
      if (value instanceof String) {
        strings.add((String) value);
      } else if (value == null) {
        strings.add("");
      } else {
        strings.add(value.toString());
      }
    }
    return strings.toArray(new String[strings.size()]);
  }


  private static String[] cleanRow(String[] values) {
    List