public static HwpVersion parseVersion(long longVersion) {
            HwpVersion version = new HwpVersion();
            version.m = (int) ((longVersion & 0xFF000000L) >> 24);
            version.n = (int) ((longVersion & 0x00FF0000L) >> 16);
            version.p = (int) ((longVersion & 0x0000FF00L) >> 8);
            version.r = (int) ((longVersion & 0x000000FFL));
            return version;
        }
transfer character stream of HWPTAG_PARA_TEXT to STRING

@param reader
@param datasize
@param buf
@throws IOException
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-miscoffice-module/src/main/java/org/apache/tika/parser/hwp/HwpTextExtractorV5.java