private CsvRowWriter()

in c3r-sdk-core/src/main/java/com/amazonaws/c3r/io/CsvRowWriter.java [56:93]
28 lines of code
4 McCabe index (conditional complexity)

    private CsvRowWriter(
            @NonNull final String targetName,
            final String outputNullValue,
            @NonNull final List<ColumnHeader> headers,
            final Charset fileCharset) {
        this.targetName = targetName;
        final CsvWriterSettings writerSettings = new CsvWriterSettings();
        this.headers = new ArrayList<>(headers);
        writerSettings.setHeaders(this.headers.stream().map(ColumnHeader::toString).toArray(String[]::new));

        // encode NULL as the user requests, or `,,` if not specified
        writerSettings.setNullValue(Objects.requireNonNullElse(outputNullValue, ""));
        if (outputNullValue == null || outputNullValue.isBlank()) {
            // If NULL is being encoded as a blank, then use an empty string
            // encoding which can be distinguished if needed.
            writerSettings.setEmptyValue("\"\"");
        } else {
            // otherwise just write it out as the empty string (i.e., without quotes)
            // like any other quoted values without whitespace inside
            writerSettings.setEmptyValue("");
        }
        // Err on the side of safety w.r.t. quoting parsed content that contains any whitespace
        // by not trimming said content _and_ by adding quotes if any whitespace characters are seen
        // after parsing.
        writerSettings.trimValues(false);
        writerSettings.setQuotationTriggers(' ', '\t', '\n', '\r', '\f');

        try {
            writer = new CsvWriter(
                    new OutputStreamWriter(
                            new FileOutputStream(targetName),
                            Objects.requireNonNullElse(fileCharset, StandardCharsets.UTF_8)),
                    writerSettings);
        } catch (FileNotFoundException e) {
            throw new C3rRuntimeException("Unable to write to output CSV file " + targetName + ".", e);
        }
        writer.writeHeaders();
    }