JSC.h

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#ifndef JSC_H
#define JSC_H

 
#include <QList>
#include <QMap>
#include <QPair>
#include <QStringList>
#include <QTextStream>
#include <QVector>

 * @typedef CodewordPair
 * @brief Tuple containing a codeword bit-vector and an associated integer.
 *
 * This typedef aliases a `QPair<Codeword, quint32>` and is used to
 * represent a codeword together with an auxiliary integer value such as
 * the character count or an index. The first element is the
 * bit-vector representation and the second is the associated unsigned
 * integer.
 */
typedef QPair<QVector<bool>, quint32> CodewordPair; 

typedef QVector<bool> Codeword; 

typedef struct Tuple {
    char const *str; 
    int size;        
    int index;       
} Tuple;

class JSC {
  public:
#if 0
    static CompressionTable loadCompressionTable();
    static CompressionTable loadCompressionTable(QTextStream &stream);
#endif

    static Codeword codeword(quint32 index, bool separate, quint32 bytesize,
                             quint32 s, quint32 c);

    static QList<CodewordPair> compress(QString text);

    static QString decompress(Codeword const &bits);

    static bool exists(QString w, quint32 *pIndex);

    static quint32 lookup(QString w, bool *ok);

    static quint32 lookup(char const *b, bool *ok);
 
    static const quint32 size = 262144; 
    static const Tuple map[262144];     
    static const Tuple list[262144];    
 
    static const quint32 prefixSize = 103; 
    static const Tuple prefix[103];        
};
 
#endif // JSC_H