public boolean readBoundary()

in commons-fileupload2-core/src/main/java/org/apache/commons/fileupload2/core/MultipartInput.java [803:833]

• 24 lines of code
• 6 McCabe index (conditional complexity)

    public boolean readBoundary() throws FileUploadSizeException, MalformedStreamException {
        final var marker = new byte[2];
        final boolean nextChunk;
        head += boundaryLength;
        try {
            marker[0] = readByte();
            if (marker[0] == LF) {
                // Work around IE5 Mac bug with input type=image.
                // Because the boundary delimiter, not including the trailing
                // CRLF, must not appear within any file (RFC 2046, section
                // 5.1.1), we know the missing CR is due to a buggy browser
                // rather than a file containing something similar to a
                // boundary.
                return true;
            }

            marker[1] = readByte();
            if (arrayEquals(marker, STREAM_TERMINATOR, 2)) {
                nextChunk = false;
            } else if (arrayEquals(marker, FIELD_SEPARATOR, 2)) {
                nextChunk = true;
            } else {
                throw new MalformedStreamException("Unexpected characters follow a boundary");
            }
        } catch (final FileUploadSizeException e) {
            throw e;
        } catch (final IOException e) {
            throw new MalformedStreamException("Stream ended unexpectedly", e);
        }
        return nextChunk;
    }