#ifndef ARCH_H

#define ARCH_H

#include "buffer.h"

enum {

    RES_RETRY,

    RES_DONE,

    RES_FAIL

};

typedef unsigned short Code;

typedef struct Entry {

    struct Entry *parent, *prev, *next;

    Code children[256];

    Byte value;

} Entry;

typedef struct Arch {

    Buffer rb, wb;

    Entry root, *entries, *first, *last;

    Code nextcode;

    unsigned int codebits;

} Arch;

int arch_init(Arch *a);

void arch_deinit(Arch *a);

int arch_deflate(Arch *a, int final);

int arch_inflate(Arch *a, int final);

#endif