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112 lines
3 KiB
C
112 lines
3 KiB
C
/* Eliot */
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/* Copyright (C) 1999 Antoine Fraboulet */
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/* */
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/* This file is part of Eliot. */
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/* */
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/* Eliot is free software; you can redistribute it and/or modify */
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/* it under the terms of the GNU General Public License as published by */
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/* the Free Software Foundation; either version 2 of the License, or */
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/* (at your option) any later version. */
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/* */
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/* Eliot is distributed in the hope that it will be useful, */
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/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
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/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
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/* GNU General Public License for more details. */
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/* */
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/* You should have received a copy of the GNU General Public License */
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/* along with this program; if not, write to the Free Software */
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/* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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/**
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* \file dic_internals.h
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* \brief Internal dictionary structures
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* \author Antoine Fraboulet
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* \date 2002
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*/
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#ifndef _DIC_INTERNALS_H_
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#define _DIC_INTERNALS_H_
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#if defined(__cplusplus)
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extern "C"
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{
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#endif
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#include <stdint.h>
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#include "config.h"
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/**
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* bit masking for ascii characters \n
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* ('a' & CHAR) == ('A' & CHAR) == 1
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*/
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#define DIC_CHAR_MASK 0x1F
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/**
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* keyword included in dictionary headers
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* implies little endian storage on words
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*/
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#define _COMPIL_KEYWORD_ "_COMPILED_DICTIONARY_"
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/**
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* structure of a compressed dictionary \n
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* \n
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* ---------------- \n
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* header \n
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* ---------------- \n
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* specialnode (0) \n
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* + \n
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* + nodes \n
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* + \n
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* firstnode (= root) \n
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* ----------------
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*/
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#if defined(WORDS_BIGENDIAN)
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struct __attribute__ ((packed)) _Dawg_edge {
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uint32_t
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chr : 5,
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fill : 1,
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last : 1,
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term : 1,
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ptr : 24;
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};
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#else
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struct __attribute__ ((packed)) _Dawg_edge {
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uint32_t
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ptr : 24,
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term : 1,
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last : 1,
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fill : 1,
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chr : 5;
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};
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#endif
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typedef struct _Dawg_edge Dawg_edge;
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struct _Dict_header {
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char ident[sizeof(_COMPIL_KEYWORD_)];
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char unused_1;
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char unused_2;
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int root;
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int nwords;
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unsigned int edgesused;
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unsigned int nodesused;
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unsigned int nodessaved;
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unsigned int edgessaved;
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};
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struct _Dictionary
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{
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Dawg_edge *dawg;
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unsigned int root;
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int nwords;
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int nnodes;
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int nedges;
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};
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#if defined(__cplusplus)
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}
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#endif
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#endif /* _DIC_INTERNALS_H */
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