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/* hunzip: file decompression for sorted dictionaries with optional encryption,
* algorithm: prefix-suffix encoding and 16-bit Huffman encoding */
#ifndef _HUNZIP_HXX_
#define _HUNZIP_HXX_
#include "hunvisapi.h"
#include <stdio.h>
#define BUFSIZE 65536
#define HZIP_EXTENSION ".hz"
#define MSG_OPEN "error: %s: cannot open\n"
#define MSG_FORMAT "error: %s: not in hzip format\n"
#define MSG_MEMORY "error: %s: missing memory\n"
#define MSG_KEY "error: %s: missing or bad password\n"
struct bit {
unsigned char c[2];
int v[2];
};
class LIBHUNSPELL_DLL_EXPORTED Hunzip
{
protected:
char * filename;
FILE * fin;
int bufsiz, lastbit, inc, inbits, outc;
struct bit * dec; // code table
char in[BUFSIZE]; // input buffer
char out[BUFSIZE + 1]; // Huffman-decoded buffer
char line[BUFSIZE + 50]; // decoded line
int getcode(const char * key);
int getbuf();
int fail(const char * err, const char * par);
public:
Hunzip(const char * filename, const char * key = NULL);
~Hunzip();
const char * getline();
};
#endif
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