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/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* Copyright (C) 2002-2022 Németh László
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* Hunspell is based on MySpell which is Copyright (C) 2002 Kevin Hendricks.
*
* Contributor(s): David Einstein, Davide Prina, Giuseppe Modugno,
* Gianluca Turconi, Simon Brouwer, Noll János, Bíró Árpád,
* Goldman Eleonóra, Sarlós Tamás, Bencsáth Boldizsár, Halácsy Péter,
* Dvornik László, Gefferth András, Nagy Viktor, Varga Dániel, Chris Halls,
* Rene Engelhard, Bram Moolenaar, Dafydd Jones, Harri Pitkänen
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/* 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 <cstdio>
#include <fstream>
#include <vector>
#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:
std::string filename;
std::ifstream fin;
int bufsiz, lastbit, inc, inbits, outc;
std::vector<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 std::string& par);
public:
Hunzip(const char* filename, const char* key = NULL);
Hunzip(const Hunzip&) = delete;
Hunzip& operator=(const Hunzip&) = delete;
~Hunzip();
bool is_open();
bool getline(std::string& dest);
};
#endif
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