private void printWithEscapes()

in src/main/java/org/apache/commons/csv/CSVFormat.java [2358:2403]
44 lines of code
12 McCabe index (conditional complexity)

    private void printWithEscapes(final Reader reader, final Appendable appendable) throws IOException {
        int start = 0;
        int pos = 0;
        @SuppressWarnings("resource") // Temp reader on input reader.
        final ExtendedBufferedReader bufferedReader = new ExtendedBufferedReader(reader);
        final char[] delimArray = getDelimiterCharArray();
        final int delimLength = delimArray.length;
        final char escape = getEscapeChar();
        final StringBuilder builder = new StringBuilder(IOUtils.DEFAULT_BUFFER_SIZE);
        int c;
        final char[] lookAheadBuffer = new char[delimLength - 1];
        while (EOF != (c = bufferedReader.read())) {
            builder.append((char) c);
            Arrays.fill(lookAheadBuffer, (char) 0);
            bufferedReader.peek(lookAheadBuffer);
            final String test = builder.toString() + new String(lookAheadBuffer);
            final boolean isDelimiterStart = isDelimiter((char) c, test, pos, delimArray, delimLength);
            final boolean isCr = c == Constants.CR;
            final boolean isLf = c == Constants.LF;
            if (isCr || isLf || c == escape || isDelimiterStart) {
                // write out segment up until this char
                if (pos > start) {
                    append(builder.substring(start, pos), appendable);
                    builder.setLength(0);
                    pos = -1;
                }
                if (isLf) {
                    c = 'n';
                } else if (isCr) {
                    c = 'r';
                }
                escape((char) c, appendable);
                if (isDelimiterStart) {
                    for (int i = 1; i < delimLength; i++) {
                        escape((char) bufferedReader.read(), appendable);
                    }
                }
                start = pos + 1; // start on the current char after this one
            }
            pos++;
        }
        // write last segment
        if (pos > start) {
            appendable.append(builder, start, pos);
        }
    }